Order On The Design, Construction And Operation Of Oil Tanks, Piping And Pipelines

Original Language Title: Bekendtgørelse om indretning, etablering og drift af olietanke, rørsystemer og pipelines

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Read the untranslated law here: https://www.retsinformation.dk/Forms/R0710.aspx?id=120233

Overview (table of contents)
Chapter 1 Scope and definitions
Chapter 2 Type approval etc.
Chapter 3 Renovation, sales and controls of tanks
Chapter 4 PUFO's control of tanks, etc..
Chapter 5 Creating and abandonment of underground facilities over 100,000 l and surface facilities over 200,000 l and pipelines
Chapter 6 Establishing and abandonment of underground facility of 100,000 l or less and surface facilities of 200,000 l or less and use of construction thought
Chapter 7 Special provisions for the establishment of facilities under 6,000 l
Chapter 8 Internal inspection, maintenance etc.
Chapter 9 Sløjfningsterminer etc.
Chapter 10 Supervision, stricter requirements, waivers and appeals
Chapter 11 Penalties
Chapter 12 Commencement and transitional provisions
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Appendix 6
Appendix 7
Appendix 8
Appendix 9
The full text
Order on the arrangement, establishment and operation of oil tanks, piping and pipelines 1)
Pursuant to § 7 paragraph. 1 pt. 1, 2, 5 and 7, and paragraph. 4-6, § 7 a, § 19 paragraph. 4 and 5, § 35 paragraph. 2, § 67, § 80 paragraph. 1 and 2, § 88. 1 and § 110 paragraph. 3 and 4 of the Environmental Protection Act, cf.. Consolidated Act no. 1757 of 22 December 2006 and § 49 paragraph. 9 of the Act on contaminated land, referred to. Legislative Decree no. 282 of 22 March 2007:
Chapter 1
Scope and definitions
scope
§ 1. The Order includes tanks with associated piping and pipelines used or intended to be used for storage or transport of oil products and their gases.
PCS. 2. The notice also includes pipelines that:



1) has a length of more than 70 km or
2) consists of several pieces of pipelines used for the same purpose, which have a combined length in excess of 70 km and is owned by the same owner.


§ 2. This Order does not tanks and associated piping and pipelines used for storage or transport of waste from oil products and their gases.
PCS. 2. This Order does not indoor tanks with a capacity less than 50 liters.
PCS. 3. This Order does not contractor tanks which are approved in accordance with the provisions of the European Convention on the International Carriage of Dangerous Goods by Road (ADR).
PCS. 4. Notice Chapter 5, § 25, § 27, § 30, § 31 and § 33 shall not apply to contractor tanks.
PCS. 5. The notice does not include installations used exclusively for storage of bitumen.
PCS. 6. This Order does not process tanks and tanks that are built into a machine.
Especially for listed enterprises
§ 3. This Order shall not apply to surface or underground facility that constitutes a principal activity independently is on the list of activities requiring a permit, cf. Order on approval of listed activities.
PCS. 2. This Order shall not apply to surface facilities at listed companies, see. However paragraph. 3 and 4.
PCS. 3. When decisions on approval of listed company in accordance with § 33 paragraph. 1, which includes the plant must be



1) conditions for surface facilities over 200,000 l at least the requirements of § 24, § 27 paragraph. 1 and 3, no. 1-2 and 4-6, § 34 and §§ 36-40, see. However, § 50 and § 51
2) terms for surface facilities of 6,000 l or more but not more than 200,000 l, at least the requirements of §§ 25-26, § 27 paragraph. 1 and 3, § 29, § 34 and §§ 36-42, see. § 50 and § 51, and
3) terms for surface facilities under 6,000 l at least the requirements of § 25, § 26, § 27 paragraph. 1 and 3, § 29, § 31, § 32, § 33 paragraph. 1, and §§ 35-40.


PCS. 4. This Order shall apply to surface facilities, subject to paragraph. 2 established before 1 September 2005.
§ 4. Unless a plant constitutes a main activity that is independent on the list of activities requiring a permit, cf. Order on approval of listed activities, the provisions of this Order apply to underground facilities at listed companies.

§ 5. The Authority must issue orders in accordance with § 41, after at eight years from the notification of approval in accordance with § 33 paragraph. 1, in order to ensure that the inspection requirements and sløjfningsterminer contained in the provisions of § 42 and § 43 are observed in the case of underground tanks, established a list business under an authorization granted prior to 6 July 2005.
definitions
§ 6. For purposes of this Order:



1) Facility: Tank with associated piping covered by no. 21. In specifying the size in liters for construction purposes tank volume.
2) CE mark: Mark, there is evidence that the tank is manufactured and controlled in accordance with Council Directive 89/106 / EEC of 21 December 1988 on the approximation of the laws and regulations on construction products.
3) Electronic gauges with leakage alarm: an electronic device that can provide information about the size of the portfolio of oil product in a tank at a given time and provides alarm if it detects change in holdings during periods of consumption.
4) Construction Tank: The container of more than 450 l, which is calculated and is used for temporary display, for example on building sites.
5) Establishment: new construction, replacement and relocation of tanks or systems. This also includes use for storage of oil products:



a) plant, which has been used for storing or collecting non-oil products, such as waste water and sewage,
b) facility that has been used for storing oil products which require heating to be transported and to be used for the storage of light oil products, and
c) installations demolished.


6) Manufacturer: anyone who manufactures tanks or piping or renovating thought.
7) Moving Activity, whereby a tank moved for continued use for storage of petroleum products at the new location.
8) Indoor tank: Tank subject of a heated building's exterior walls.
9) List Company: Business, system or device which is included in Annex 1 or 2 to the Order on approval of listed activities.
10) Buried tank or plant: Tank or plant where the tank as a result of burial is fully or partially covered.
11) Petroleum products: crude oil and all non-water-soluble mineral oil products such as heating oil, diesel, gasoline, kerosene and lubricating oil.
12) Declaration of Conformity: A document that contains the in Economic and Business Affairs Executive Order on CE marking and market surveillance of construction products mentioned information.
13) Overloading Alarm: A device mounted system that warns against overfilling the tank.
14) Above-ground tank or plant: Tank or plant where the tank is buried. Both indoor and outdoor tanks covered, including tanks above ground, set directly on a foundation electricity. etc., so that the bottom surface is not readily accessible to visual inspection, and tanks are placed in a tank pit.
15) Pipeline: Piping for transportation of petroleum products of third party property between tanks on land, as well as in § 1. 2, said oil pipelines.
16) Process Tank: Tank wherein performing physical or chemical processes or tank, which is part of a plant, and wherein the tank is not used as a settling.
17) Renovation: Operation:



a) bringing a tank in accordance with this notice requirement for new tanks
b) involves the modification or replacement of existing corrosion protection method with another approved method of protection
c) recreates existing corrosion protection or
d) causes interference with the tank container steel construction.


18) Repair: Activity by which the plant is restored in its original or just good condition, for example by replacing a tank's support. Change of anodes considered repair.

19) Piping All piping that is not covered by no. 15, used for the transport of petroleum products, or their gases, such as vent pipes and dampreturrør in connection with tanks covered by no. 21. The pipe system defined by the pipework connecting to the consumption device luminaire or drain device. Flexible hose belonging to the burn unit at a heating plant for heating buildings are also covered by the pipework.
20) Coexistence Period: Time period in which it is optional for a harmonized standard or approval from PUFO used.
21) Tank means any stationary container and contractor tanks for storage of items. 11, the petroleum products listed. However, § 2. 6
22) Tank Certificate: A document that contains the in § 11 or § 19 paragraph. 3, the information provided.
23) Hour meter: Device mounted oil heating system keeps track of the time, the lighthouse is in operation. The operating period translated at the consumed volume (liter) by a conversion factor which depends on the oil burner nozzle size etc.
24) Volume Meter: Meter, connected system that measures the amount of oil product which passes from tank to drain or other place of consumption.


Chapter 2
Type approval etc.
Type approval
§ 7. tanks of 100,000 liters for burial and tanks of 200,000 liters for above ground installation and corrosion protection of tanks, type approved by the Test Committee for Oil tanks (PUFO) referred to. However, § 13.
PCS. 2. Piping listed in paragraph. 1 tanks referred type approved by PUFO. Piping carried out in accordance with Annex 2, regarded as type approved.
PCS. 3. Tanks carried out according to the requirements of Annex 3, 4, 5, 6 and 8 can be approved, cf.. However, § 13. PUFO will by approval use of the then-applicable norms and standards that replace or complement the in Annex 3, 4, 5, 6 and 8 above.
PCS. 4. PUFO may type approve tanks, pipes and corrosion protection that meets requirements other than the requirements of Annex 2, 3, 4, 5, 6, 7 and 8 of. However, § 13, unless it is proved that this ensures equivalent level of protection relative to the environment.
PCS. 5. To obtain approval, construction tanks, in addition to meeting in Annex 4, 5, 6 and 8 stated requirements or requirements referred to in paragraph. 4, be provided with a special base or reinforcement to ensure against damage, for example by contact with a possibly uneven surfaces.
PCS. 6. PUFO may impose specific requirements for installations for the storage and transport of special oil types if they are in the relevant Annex requirements must be deemed insufficient.
PCS. 7. PUFO can specify the conditions for approval, including:



1) requirements for the manufacturer's quality assurance
2) requirements for control of the manufacture,
3) specifying limitations on the use to include only documented oils and
4) a statement of claim to the owner or user maintenance, such as regular function testing and anodeskift.


PCS. 8. PUFO may require the applicant for approval for its own account lets tank structure or the tube study at a designated laboratory or similar documentation of matters of importance to the issue of approval. PUFO can only demand this study expense of the applicant, if not already available similar studies of the tank or the pipes.
§ 8. The application for approval submitted by the manufacturer or importer to PUFO.
PCS. 2. be submitted in two copies dimensioned drawings, description of the tank or pipe system construction, information about the materials and methods of internal and external corrosion protection that is desired, and requirements for the installation of underground tanks, which ensures that the tank after installation can withstand the traffic of vehicles up to 3,500 kg.
PCS. 3. The notifications for corrosion protection type and information about the materials and methods to be used for internal and external corrosion protection by separate approval for corrosion protection of tanks.
PCS. 4. There also sent technical assessment of the strength and durability, conducted by expert firm, for tanks, piping and corrosion protection, which are not fully described in its Annex or who have not previously been approved.

§ 9. A granted type approval is only valid for tanks, corrosion protection and piping of the type manufactured or imported by the type approval owner.
PCS. 2. Type-approval holder shall ensure that the tank with regard to the design, the materials used and workmanship are in accordance with the approval and must comply with the regulations and terms that are stated in the type approval.
PCS. 3. The type approval owner shall ensure that corrosion protection is in accordance with the approval and must comply with the regulations and terms that are stated in the type approval.
PCS. 4. The type approval for tanks, corrosion protection or piping after PUFO's assessment is not made as specified in the approval may be withdrawn with immediate effect.
fee
§ 10. For processing applications for approval charge Environmental Protection Agency a fee as specified in Annex 1
PCS. 2. For PUFO's checks referred to. § 22 charge Environmental Protection Agency an annual fee as specified in Annex 1. For the purpose of calculating the amount of the fee to be manufacturer or importer every year in January to communicate PUFO a statement of the last calendar year the number of produced or imported tanks broken down in Annex 1 listed categories tank.
Tank Certificate and marking
§ 11. The manufacturer or importer must produce a tank report containing the following information in Danish:



1) The manufacturer's name and registered office, and if the idea comes from a Danish importer his name and registered office.
2) A statement that the supply tank has been approved in Denmark, and type approval number.
3) A description of the tank, the manufacturer's type designation, capacity and main dimensions.
4) Serial number and year of manufacture.
5) Unabridged details of any terms relating to establishment, use, operation and maintenance, as may be specified in the approval.
6) The manufacturer or importer's directions for use, location, transportation, maintenance and inspection.


PCS. 2. The manufacturer or importer must for CE marked tanks with approved corrosion protection produce a tank report containing the following information:



1) Name and address of the manufacturer or importer adding corrosion protection.
2) The manufacturer's or importer's identification number with PUFO.
3) Corrosion protection type.
4) Tank serial number contained in the original tank marking.
5) Unabridged details of any conditions for the use, operation and maintenance, as may be specified in the approval.
6) The manufacturer or importer's directions for use, location, transportation, maintenance and inspection.


PCS. 3. If an approval is changed, type approval owner responsible for the design of new tank certificates in compliance with the amended approval.
§ 12. Any type approved tank shell of the manufacturer or importer be provided with clear, permanently secured type plate with:



1) the name and registered office
2) type of tank and -rumfang,
3) production number and year and
4) approval number.


PCS. 2. CE marked tanks, see. § 13, which is protected against corrosion, see. § 14 paragraph. 1 and 2, the manufacturer or importer shall be provided with clear, permanently secured type plate with:



1) the name and address of the manufacturer or importer adding corrosion protection
2) corrosion protection type and
3) Tank serial number contained in the original tank marking.


PCS. 3. The identification label must be produced in duplicate, one manufacturer or importer placing the one on the tank near the filler neck while the other comes loose with the idea. The installer must when installing the nameplate at the plant to ensure that the sign is visible after installation. Type plates for surface tanks must remain readable.
PCS. 4. Type plates for underground tanks be embossed stainless steel.
Tanks covered by the CPD harmonized product standards
§ 13 CE marked tanks for storage of petroleum products regarded as type approved, cf.. However, § 15th

PCS. 2. Tanks, covered by a harmonized standard must meet the requirements of the standard, and tanks, by the manufacturer or importer to be CE marked, cf. Order on CE marking and market surveillance of construction products, see. However paragraph. 3.
PCS. 3. In the coexistence period, the tanks, see. Paragraph. 1, type approved by PUFO.
§ 14. The owner or user must ensure that aboveground CE marked steel tanks for outdoor installation covered by external corrosion protection, approved by PUFO.
PCS. 2. CE marked steel tanks, cf.. § 13 paragraph. 1, can be protected against internal corrosion according to the guidelines in Annex 5 and 6
PCS. 3. External and internal corrosion protection, see. Paragraph. 1 and 2, the type approved by PUFO, if not in the harmonized standard is a requirement for external or internal corrosion protection. The application for approval submitted by the manufacturer who perform corrosion protection or importer pursuant. § 8 paragraph. 3.
§ 15. The owner or user must ensure that CE marked aboveground thermoplastic tanks with a volume of 450 l and 10,000 l have a wall thickness of at least 4.5 mm, as indicated on the CE nameplate see. § 16.
§ 16. The manufacturer or importer must for CE marked tanks ensure that there is a declaration of conformity and the tanks are provided with clear, permanently secured type plate in accordance with the requirements stated in the notice of CE marking and market surveillance of construction products.
Chapter 3
Renovation, sales and controls of tanks
§ 17. Before the renovation of a tank manufacturer must inspect the tank, and to prepare a status report to the owner or user, see. Annex 9
§ 18. Renovation of type-approved tanks of 6,000 liters or more but not more than 100,000 l for trenching and surface tanks of 6,000 liters or more but not more than 200,000 liters, must be performed by a manufacturer whose tank type or corrosion protection is approved.
PCS. 2. Approved tanks of under 6,000 l must not be renovated.
PCS. 3. After renovation, the manufacturer shall issue an addition to the tank certificate indicated. § 11, concerning the renovation. In the appendix to the tank certificate shall state the year of the renovation design and information on the renovation nature and extent. The addendum to the tank certificate shall also contain information about the location of the tank on the property.
PCS. 4. After renovation, the manufacturer must ensure that the tank is supplied with a clear, permanently secured type plate on the filler neck showing:



1) the name and registered office and
2) serial number of the manufacturer's tank or corrosion protection.


PCS. 5. Manufacturers shall ensure that the label also meets the requirements of § 12 paragraph. 3, 2nd and 3rd clauses., And § 12 paragraph. 4.
§ 19. Renovation of non type-approved tanks of 6,000 liters or more but not more than 100,000 l for trenching and surface tanks of 6,000 liters or more but not more than 200,000 liters must be performed by a manufacturer whose tank type or corrosion protection is approved.
PCS. 2. Do not type-approved tanks of under 6,000 l must not be renovated.
PCS. 3. After renovation, the manufacturer shall issue a separate tank report contains information on:



1) the name and registered office
2) serial number of the manufacturer's tank or corrosion protection
3) the tank's location on the property and
4) a description of the tank capacity and main dimensions.


PCS. 4. After renovation, the manufacturer must ensure that the tank is equipped with a clear, permanently secured type plate on the filler neck showing:



1) the name and registered office and
2) serial number of the manufacturer's tank or corrosion protection.


PCS. 5. Manufacturers shall ensure that the label also meets the requirements of § 12 paragraph. 3, 2nd and 3rd clauses., And § 12 paragraph. 4.
§ 20. The owner or user of the refurbished tank, see. § 18 and § 19 shall forward a copy of tank report or addendum to this and any evidence of leak-tightness to the supervisory authority immediately after the renovation completion.
§ 21. On the sale or other transfer of a type approved tank shall be supplied with rating plates, tank report or declaration and addition to tank report.
Chapter 4
PUFO's control of tanks, etc..
§ 22. PUFO verify that the tank report is consistent with the type approval and the requirements for the contents of a tank report.

PCS. 2. PUFO perform random control of the manufacture and quality of type-approved tanks, corrosion protection and pipes.
PCS. 3. The importation must PUFO informed about the delivery date in order to ensure that PUFO have the opportunity to perform in paragraph. 2 mentioned sampling.
Chapter 5
Establishment and abandonment of underground facilities over 100,000 l and surface facilities over 200,000 l and pipelines
§ 23. The owner or operator who will establish an underground facility that is greater than 100,000 l, a surface facility that is greater than 200,000 liters or pipeline, shall, before starting work, obtain municipal permission in accordance with § 19 referred. however paragraph. 2. The owner or user is responsible for the establishment or transfer takes place in accordance with the terms set out in the permit.
PCS. 2. Environmental Centre Odense grants permission in accordance with § 19 to the establishment of the in § 1. 2, said oil pipelines.
PCS. 3. Conditions of authorization shall include at least the requirements of § 27, except § 27 paragraph. 1 pt. 7 and paragraphs. 3, no. 3
Looping
§ 24. By abandonment of an underground facility that is greater than 100,000 l, a surface facility that is greater than 200,000 liters, or a pipeline, the timing and procedure for the running down notified to the supervisory authority within 4 weeks before starting work. The Authority shall, within one week prior to the running down notify any requirements to do so.
PCS. 2. Notification of the measures shall be submitted to the Authority no later than four weeks after the running down.
PCS. 3. If the use of the paragraph. 1 said facility or a pipeline term ends, the facility or pipeline loop in accordance with paragraph. 1 and 2.
Chapter 6
Establishment and abandonment of underground facility of 100,000 l or less and surface facilities of 200,000 l or less and use of construction thought
Establishment etc.
§ 25. The owner or operator who will establish a sub-surface facility of 100,000 l or less or a surface facility of 200,000 l or less, at least 4 weeks before starting work, notify the regulator when the facility must be established, see. However, § 30 for facilities under 6,000 l. the notification transmitted description of the facility and outline of the plant's location on the property.
PCS. 2. The Authority may in establishing demand that the plant be tested for tightness of the owner or user. This does not apply to facilities that meet the requirements of the Order on the prevention of soil and groundwater contamination from gasoline and diesel sales systems and other systems with similar double-walled tanks and piping.
PCS. 3. The owner or user establishing the facility must submit a copy of the tank report or declaration and any evidence of leak-tightness to the supervisory authority immediately after the establishment's completion.
§ 26. The owner or user establishing a sub-surface facility of 100,000 l or less or a surface facility of 200,000 l or less, to ensure that the tank is approved. The owner or operator must ensure that the underground steel tanks has approved, internal corrosion protection. Anyone who owns or uses a contractor tank, to ensure that the tank is approved.
PCS. 2. The owner or user must ensure that the piping system, which belongs to in paragraph. 1 said facility is approved.
§ 27. For the construction of an underground facility of 100,000 l or less or a surface facility of 200,000 l or less, the owner or user to ensure that the following requirements are met:



1) The system shall not be established within a distance of 50 meters from the extraction wells to the public water supply system and 25 m from other boreholes and wells, sources of drinking water. The distance requirement does not include above-ground, indoor plants during 6000 l, with above-ground pipe systems that are not embedded or bricked.
2) The construction must not be buried within the protection area for groundwater extraction as defined in connection with a water extraction permit under the then applicable rules of the Environmental Protection Act.
3) The construction must not be buried or otherwise applied during or as close to the buildings that the facilities can not be removed.
4) Bearing holes and manholes must be easily accessible.
5) Buried pipes must everywhere be surrounded by at least 15 cm sand on all sides.

6) Fill and vent pipes must be propelled horizontally or with a slope towards the tank and must be completed with a hood or cap. Vent pipe should extend at least 50 cm above the ground.
7) Requirements for the establishment listed in the tank certificate or declaration of conformity.


PCS. 2. For underground installations shall further:



1) It is by visual inspection ensures that the tank before burial is undamaged. It should also be ensured that the tank and piping system during burial and tilkastningen not exposed to damage.
2) The tank must be in the excavation have been deposited in a layer of sand at least 15 cm on all sides.
3) At high water tank must be secured against buoyancy.
4) It must be ensured that the coating on a partially covered tank is not exposed to degradation due to exposure to sunlight, etc.


PCS. 3. For surface facilities shall further:



1) The tank must be installed on a level and permanently stable surface.
2) There must be on the tank be mounted overfill alarm. The overfill alarm should be located so that it can be registered by filling the tube.
3) Steel tanks should be on a structure be elevated above the floor so that inspection of the bottom can take place.
4) Distance from the tank to the wall or other structure must be at least 5 cm.
5) Plastic Tanks approved for placement directly on the substrate, to be established on a near surface, which extends at least 10 cm around the tank.
6) For systems with tank outlet, must be fitted with a shut-off device immediately at the tank outlet.


§ 28. In addition to the requirements of §§ 25-27 applies to sub-surface facilities of 6,000 l or more but not more than 100,000 l and surface facilities of 6,000 l or more but not more than 200,000 l covered by § 34 paragraph . 4, must be fitted with dipstick or chronometer.
PCS. 2. The following sub-surface facilities of 6,000 l or more but not more than 100,000 l and surface facilities of 6,000 l or more but not more than 200,000 l may only be used for storage of petroleum products after inspection, see. Annex 9:



1) Facilities which have been used for storing or collecting non-oil products, such as waste water and sewage.
2) Facilities which have been used for storing oil products which require heating to be transported and to be used for the storage of light oil products.
3) Facilities which have been dismantled.


Looping
§ 29. By looping a sub-surface facility of 100,000 l or less or a surface facility of 200,000 l or less be possible residual in the system is removed, and the plant must be removed or filler neck and vent pipe removed, and the idea screened out, so that the filling can not take place.
PCS. 2. Notification of the facility is demolished, as well as information on the measures taken, shall be submitted by the owner to the Authority no later than four weeks after the running down.
PCS. 3. If the use of a sub-surface facility of 100,000 l or less or a surface facility of 200,000 l or less permanently ceases, the owner must make sure that the loop in accordance with paragraph. 1 and 2.
Chapter 7
Special provisions for the establishment of facilities under 6,000 l
§ 30. For the establishment of facilities under 6,000 l deadline for notification to the regulator, see. § 25 paragraph. 1, 2 weeks.
§ 31. For the establishment of facilities under 6,000 l connected to heating systems for heating buildings with a heat input at most 120 KW apply, besides the provisions of Chapter 6, the following:



1) The pipe (suction pipe) between the tank and consumption site must be unified.
2) The suction pipe must be performed in accordance with Annex 2, section 1, no. 4, or section 2, no. 2.
3) The suction pipe must be completed by oil fired with a fuse valve.
4) Suction tube, which is fed above-ground and which is not molded, must be securely supported by pipe supports. Olieafluftere, filters, and similar components must be securely mounted.
5) Filling pipes and vent pipes must be raised with fall towards the tank, complete with respectively lockable standard filler cap and standard ventilation hood.



PCS. 2. The Authority may require the owner or user establishing the facility, submit the documents or a written confirmation that the requirements of paragraph. 1 is respected.
§ 32. The following facilities under 6,000 l must not be used for storage of petroleum products:



1) Facilities which have been used for storing or collecting non-oil products, such as waste water and sewage.
2) Facilities which have been used for storing oil products which require heating to be transported.
3) Underground installations demolished.


§ 33. Ethereal tanks under 6,000 l moved, must be established, notwithstanding the provision in § 26 paragraph. 1, if the tank is equipped with original rating plate, at least provides information on the name and seat, tank volume and type, production number and year.
PCS. 2. Underground tanks under 6,000 l must not be moved.
Chapter 8
Internal inspection, maintenance etc.
§ 34. The owner and user of a facility of 6,000 liters or more, or a pipeline must check that the plant, respectively pipeline leaks.
PCS. 2. The density of double-walled tanks and pipes must be checked by monitoring the pressure ratio (gas or fluid pressure) in the space between the double walls. Monitoring can be automatically when connected to alarm or manual by reading the manometer or similar equipment. Automatic monitoring systems must function tested at least annually. Manual monitoring should be done at least once a week.
PCS. 3. In systems with single wall tanks can control the density happen with electronic gauges with leakage alarm if associated with an electronic system, which accounts for the filled and drained volumes. At least once a month keep a portfolio accounting from measurements with the electronic direction finding equipment. Based on the inventory accounts and to input and drained volumes are to be the difference between the two accounts is calculated according to the same principle as set out in paragraph. 4.
PCS. 4. In the case of single wall tanks are not installed electronic gauges with leakage alarm, as specified in paragraph. 3, there must be an accounting of inventory in the tank, filling quantities and drained or otherwise consumed quantities. Bottled amounts must be continuously measured with volume meter when it is installed. Consumption also be either calculated from measurements with hour meter or measuring the volume meter. The holding tank is calculated based on bearing or other measurement and must be done as often as necessary to maintain a reliable accounting, but at least once every 14 days when installed dipstick or chronometer. For systems without a volume meter or hour meter should be in the tank is measured at least every week. Accounts shall be kept so that a calculation of the difference between a) the measured change of level in the tank and b) the filled and drained or otherwise consumed quantities.
PCS. 5. Measurements, test results and records as referred to. Paragraphs. 2-4, must be recorded. In connection with the journal must assess whether there is systematically less inventory or greater consumption than expected. If this is the case, the regulator is informed and the reason must be found.
PCS. 6. records and documentation for function testing, see. Paragraph. 2-5, should be stored at least 5 years and must be submitted to the Authority upon request.
PCS. 7. The Authority shall, on request approve other forms of surveillance, if monitoring is done with equal or better security.
§ 35. On the surface facilities under 6,000 l connected to heating systems for heating buildings must be equipped with overfill alarm.
PCS. 2. facilities under 6,000 l connected to heating systems for heating buildings with an input power of 120 KW shall be installed tier piping.
PCS. 3. Plants of 6,000 l but not more than 100,000 l for trenching and surface facilities of 6,000 l or more but not more than 200,000 l covered by § 34 paragraph. 4, must be mounted volume meter or hour meter, see. However, § 58.
§ 36. If the owner or operator of a facility or pipeline finds, or has reason to suspect that the equipment or pipeline leaks, the supervisory authority shall be informed immediately. If the user is someone other than the owner, the user must also inform the owner. In addition, the owner or operator shall immediately take measures that could bring a possible outflow to an end, for example. by draining the system.

PCS. 2. If during the filling of a plant happens outflow of petroleum products, including waste, can not be readily removed, the person conducting the filling, immediately inform the supervisory authority and the owner or user of the facility. Where the waste of the owner or user of the system shall immediately notify the supervisory authority.
§ 37. The owner and user of a facility must ensure that the system is in such a state of repair, that there is no obvious manifest risk that there may be contamination of soil, groundwater or surface water, including must not present significant visible corrosion of the tank, piping or the support of aboveground tanks. The owner and user of a surface facility must also ensure that the plant remains in a durable stable surface.
§ 38. As part of the maintenance stated. § 37, the owner and user of the facility may arrange for the necessary repairs take place.
PCS. 2. Repair of an installation must be performed by an expert. The executive needs to provide documentation of the work performed to the tank owner or user.
§ 39. The owner and the user must keep a copy of the tank report or declaration of conformity addition to tank report, prepared status reports and documentation for repairs.
§ 40. The owner and user of a facility must ensure that the maintenance requirements, application etc., as indicated in the tank certificate, declaration of conformity or other certificates observed.
The inspection and leak testing
§ 41. For underground installations over 100,000 l and surface facilities that are larger than 200,000 l, the supervisory authority may require inspection and leak testing, see. Act § 19
§ 42. The owner and the user must ensure that sub-surface facilities of 6,000 l or more but not more than 100,000 l and surface facilities of 6,000 l or more but not more than 200,000 liters, leak-tested and inspected by an expert at the following intervals: || |


1) Tanks which are internally corrosion protected with sacrificial anodes or internal organic or inorganic coating: at least every 10 years.
2) Tanks which are not protected against internal corrosion as specified in no. 1: at least every 5 years.


PCS. 2. For facilities that have installed electronic gauges with leakage alarm, see. § 34 paragraph. 3, need not be performed leak testing.
PCS. 3. For tanks equipped with a double wall system, which is connected to a monitoring system, are no requirements for leak testing or inspection.
PCS. 4. Piping not jacketed and connected to a monitoring system must be leak tested at the same time as the associated tanks. In connection with the double-walled monitored tanks, piping systems that are not included in the monitoring, leak tested at least every 10 years.
PCS. 5. If the tank or piping condition dictates, the inspection is performed more often than specified in paragraph. 1, 4 and 8.
PCS. 6. The tanks must be inspected on both inside and outside. However, underground tanks only inspected on the inside together with what may otherwise be available for inspection, for example. the manhole.
PCS. 7. Inspection, preparation of status report, etc. must be carried out according to the guidelines in Annex 9
PCS. 8. sites that are not under the current rules have been subject to requirements for regular inspection, leak-tested and inspected first 10, respectively, five years after establishment, see. Paragraph. 1 and 4, but not before 1 April 2010.
PCS. 9. For installations used for the storage of petroleum products that require heating to be transported, the supervisory authority may be more generous on inspection, etc..
Chapter 9
Sløjfningsterminer etc.
§ 43. The owner must ensure that the above-ground steel tanks under 6,000 l are dismantled in the following sløjfningsterminer:



1) Tanks which are approved with internal corrosion protection by coating or sacrificial anode must be dismantled within 40 years after the year of manufacture.
2) Other tanks must be dismantled within 30 years after the year of manufacture.
3) Tanks, unknown year of manufacture or can be determined, must be dismantled within 31 August 2008.


PCS. 2. The owner must ensure that aboveground single wall tanks made of plastic or surface tanks of material other than steel under 6,000 l are dismantled within 25 years from the year of manufacture.

PCS. 3. The owner must ensure that aboveground double-walled tanks of plastic under 6,000 l, notwithstanding paragraph. 2, dismantled within 40 years after the year of manufacture.
PCS. 4. The owner must ensure that aboveground single wall tanks made of plastic or surface tanks of material other than steel to 6,000 l of manufacture is not known or can be determined, dismantled no later than 31 August 2008.
PCS. 5. The owner must ensure that tanks September 1, 2005 exceeds the age limit in paragraph. 1 pt. 2 or paragraph. 2, or exceeds this before 31 August 2008 dismantled no later than 31 August 2008.
PCS. 6. dismantling deadline August 31, 2008, see. Paragraph. 1, no. 3, paragraph. 4 and paragraph. 5, can be exceeded until a new facility or other heat supply is established, but not later than 31 August 2009, if the owner before dismantling deadline has secured a written agreement setting up a new facility or other heat supply, which indicates that the establishment because to supply to the usual terms of necessary materials tanks or plumbing services can not be reached before dismantling deadline 31 august 2008. the agreement must be presented at the authority's request.
PCS. 7. For installations which paragraph. 6 and by the Contaminated Soil Act § 49 shall be covered by insurance, and where is desired to establish combustion plants with natural gas, the owner Moreover, by 30 September 2008 submit a copy of the agreement referred. Paragraphs. 6, to the insurer. Owner must ensure that the facility remains subject to insurance until dismantling is completed.
PCS. 8. Installations have sløjfningstermin between 31 August 2008 and 31 August 2009 may exceed the payment date until a new facility or other heat supply is established, but not later than 31 August 2009, if the owner within one month before the dismantling deadline, but no earlier than august 31, 2008, has secured a written agreement setting up a new facility or other heat supply, which indicates that the establishment due to delivery to the usual terms of necessary materials tanks or plumbing services can not be reached before dismantling deadline. The agreement shall be presented at the Authority's request.
PCS. 9. For installations covered by paragraph. 8 and after the Contaminated Soil Act § 49 shall be covered by insurance, and where is desired to establish combustion plants with natural gas, the owner also later than one month before the dismantling deadline submit a copy of the agreement referred. Paragraphs. 8, to the insurer. Owner must ensure that brought remain covered by insurance until dismantling is completed.
§ 44. The owner must ensure that the underground steel tanks under 6,000 l are dismantled in the following sløjfningsterminer:



1) Tanks which are approved with internal corrosion protection and external coating with glass fiber reinforced polyester, must be dismantled within 50 years after the year of manufacture.
2) Tanks which are approved without internal corrosion protection, but with exterior coating with glass fiber reinforced polyester, must be dismantled within 40 years after the year of manufacture.
3) Tanks with external coating with glass fiber reinforced polyester, which are not type approved or in which the manufacturing year is not known or can be determined, must be dismantled before 31 March 2010.
4) Tanks with other approved exterior coating than fiberglass reinforced polyester must be dismantled within 50 years after the year of manufacture.


PCS. 2. The owner must ensure that underground tanks of plastic under 6,000 l are dismantled within 45 years after the year of manufacture, see. However paragraph. 3.
PCS. 3. The owner must ensure that underground tanks of plastic under 6,000 l of manufacture is not known or can be determined, dismantled no later than 31 March 2015.
PCS. 4. The owner must ensure that the tanks 1 January 2007 exceeds the age limit in paragraph. 2, or exceeds this before 31 March 2015, dismantled no later than 31 March 2015.
§ 45. The owner must ensure that sub-spherical oil tanks of polyethylene produced by the company AJVA-Plast A / S dismantled within 20 years after burial.
§ 46. The owner must ensure that sub-systems with steel tanks at between 6,000 liters and 100,000 liters, which is buried before 1 April 1970 and not having exterior coating with glass fiber reinforced polyester, discontinued, unless they are still subject to one of the following measures :



1) External cathodic protection system, which uses forced current from a controlled rectifier, and the protection of the tank against internal corrosion by Type approved methods.

2) Inner coating that can ensure the tank tightness without special protection against external corrosion, and the establishment of effective protection of the pipe system, performed with at execution time type approved materials.
3) Efficient, external cathodic protection, which uses forced current from a controlled rectifier, and internal inspections and any renovation every 5 years.
4) Approved double wall system with surveillance systems.


PCS. 2. Exports of measures referred to in paragraph. 1, Nos. 1-4, see § 19 paragraph. 3-5, also apply.
PCS. 3. Protection Installations for effective external cathodic protection, see. Paragraph. 1 pt. 1 and 3 must be inspected, functionally tested and, if necessary, adjusted by an expert at least once a year. There must be a record of the checks. It shall be retained for at least 10 years and on request be made available to the regulator.
PCS. 4. Installations covered by paragraph. 1, not 1 September 2005 were subjected to in paragraph. 1, the said measures are still illegal and can not be legalized.
PCS. 5. Plants that have been used exclusively and continue to be used for products that require heating to be transported by pumping, ie Products whose viscosity is greater than 100 centistokes at 15 ° C, and which are established before 1 January 2000, is not subject to paragraph. 1-3.
§ 47. All underground fluid-carrying tubes of steel attached to underground facilities of 6,000 l or more but not more than 100,000 l and surface facilities of 6,000 l or more but not more than 200,000 l, which are not galvanized or covered by effective cathodic protection must be replaced with type-tested pipe within 30 years after installation. Pipes 1 January 2007 exceeds the age limit or exceeds this before 31 December 2010 must be dismantled by 31 December 2010.
Chapter 10
Supervision, stricter requirements, waivers and appeals
supervision
§ 48. The municipal council supervises the rules of this Executive Order, cf.. However paragraph. 2 and 3 and § 22 paragraph. 1 and 2.
PCS. 2. Environmental Centre Odense overseeing the in § 1. 2, said oil pipelines.
PCS. 3. Environment, Aarhus, Odense Environmental Centre and Roskilde Environment oversees the installations covered by this Order to list companies whose approval competence under the rules on approval of listed activities are allocated thereto.
§ 49. If by a leak test or otherwise prove that a system is leaking, the system must be immediately emptied to the extent necessary to prevent contamination. A leaky system must be dismantled, refurbished or repaired.
PCS. 2. If by a leak test or otherwise prove that a pipeline is leaking, the owner or user must immediately take steps to prevent further leakage from the pipeline.
PCS. 3. In connection with demolition, renovation or repair of facilities or pipelines referred to in paragraph. 1 and 2, must be generated evidence that the system has not caused pollution.
Stricter requirements and any facilities
§ 50. If the establishment of a tank, a plant or a pipeline by the Authority assessment will entail a particular risk of contamination of groundwater, surface water, soil or nearby water reclamation plant, the supervisory authority may impose stricter requirements for the establishment or prohibit the establishment of the tank, plant or pipeline.
§ 51. The Authority may, in specific cases and in the interest of water supply and protection of groundwater does not argue against permit relaxation from the requirements specified in § 27
PCS. 2. In cases where the planned collective heating, the supervisory authority may permit relaxation from sløjfningsterminerne listed in § 43 and § 44 of the tanks for combustion plants. Sløjfningsterminerne can be exceeded for a maximum of 2 years. The owner of the plant, which under the Act on contaminated soil § 49 shall be covered by insurance shall, within one month after receipt of the authorization send a copy of this to the insurer, as well as information that the facility is in such a state of repair, as specified in § 37 . If the insurer finds that maintaining the stand is not as specified in § 37, the insurer may notify the owner of the facility this.
Complaints
§ 52. PUFO's decisions under this Order may be appealed to the Environmental Appeal Board under the provisions of Act Chapter 11
PCS. 2. Decisions taken by the Environment, Aarhus, Odense Environmental Centre and the Environmental Centre Roskilde can not be appealed to any other administrative authority.

Chapter 11
penalty
§ 53. Unless a higher penalty is prescribed under other legislation punishable by fine who



1) violates § 9 paragraph. 2 and 3, § 11, § 12, § 15 paragraph. 1 and 2, §§ 17-21, § 24 paragraph. 1 and 2, §§ 25-32, § 33 paragraph. 2, §§ 34-40, §§ 42-44, § 45, § 46 paragraph. 1, 3 and 4, § 47, § 49 and § 56
2) disregard of terms attached to a permitted relief under § 51
3) using a tank established contrary to § 23 paragraph. 1, §§ 25-28, §§ 30-32, § 33 paragraph. 2 and requirement or prohibition given in accordance with § 50,
4) uses or fails to loop a tank, which should have been demolished, see. § 24 paragraph. 3, § 29 paragraph. 3, § 43, § 44 and § 46 paragraph. 1
5) uses pipes that should have been replaced as instructed. § 47
6) fails to comply with an order according to § 31 paragraph. 2, § 48 and § 49
7) fails to carry out checks, as approved in accordance with § 34 paragraph. 7, or
8) fails to comply with additional stricter requirements or prohibitions issued pursuant to § 50.


PCS. 2. The penalty may increase to imprisonment for up to 2 years if the infringement was committed intentionally or through gross negligence and if the violation is



1) harm to the environment or risk of harm, or
2) achieved or intended financial gain for himself or others, including savings.


PCS. 3. It may be imposed on companies etc. (legal persons) under the rules of the Penal Code Chapter 5.
Chapter 12
Commencement and transitional provisions
§ 54. This Order shall enter into force on 10 July 2008.
§ 55. Order no. 729 of 14 June 2007 on the design, construction and operation of oil tanks, piping and pipelines, is repealed.
§ 56. Tanks, plants and pipelines that were not lawful August 31, 2005, to be legalized or discontinued in accordance with this Order.
§ 57. Pending cases determined in accordance with this notice.
§ 58. Existing plants see. § 28 para. 1 shall by 1 January 2010 having installed dipstick or chronometer see. § 35 paragraph. 3.
Ministry of Environment, July 1, 2008
Troels Lund Poulsen
/ Claus Torp
Annex 1
Fees for approval of tanks for storage of petroleum products and the associated piping, see. § 10
For processing applications for approval a fee of 5,000 kr.
For renewal of an existing approval without significant changes paid only a fee of 2,000 kr.
For the PUFO performed checks on the manufacture of steel tanks payable:





1)


an annual basic fee of 2,500 kr., and



2)


an annual fee for production size:





a)


tanks under 6,000 l:






-


production up to 50 pcs. per. year: 0 kr.






-


production of over per. paragraph .: 20 kr.





b)


Tanks 6000-200000 l:






-


production until 10. per. year: 0 kr.






-


production of over per. paragraph .: 40 kr.




For checks on the manufacture of plastic tanks is paid an annual fee of 9,000 kr.
Annex 2
Piping referred. § 7 paragraph. 2 and 4
1. SUB-SURFACE PIPES
The following piping systems are regarded as type approved:





1)



Galvanized steel tubes assembled with standard threaded fittings with the use of oil-resistant gasket materials. After screwing and leak test the pipes must be wrapped with adhesive or self-amalgamating plastic tape or other protection providing equivalent protection against corrosion. There must be carried high voltage pore detection at 15,000 V.



2)


Non-alloy steel tubes with fully welded joints, separately approved external corrosion protection.



3)


Stainless steel tubes of austenitic acid-resistant type with min. 16.5 per cent. Cr, min. 2 per cent. Mo and max. 0.03 per cent. C (EN 10088 part 1 no. 1.4404) or higher alloyed types. The pipe work must be performed with fully welded joints, which after welding renbejdses. Alternatively, used under lawful unions, couplings or flanges, where all parts are of the same type of steel as the pipes.



4)


Copper pipes are plastic coated from the factory. Collections of buried or embedded pipes must be carried out by hard soldering with solder that contains at least 45 per cent. silver, and such collections must be enclosed with waterproof shrink tubing with such great length that the original plastic coating overlapped with at least 5 cm on both sides. When replacing parts of the pipe system or the repair, where the existing pipe is not plastic-coated, should be enclosed with at least 5 cm waterproof heat shrink at both sides.



5)


As vent pipe may be used steel pipes, which are effectively protected against corrosion eg warm delayed or protected with plastic tape or wax volumes that can withstand a high voltage pore detection at 15,000 volts test voltage.




For underground tanks that are not externally cathodically protected, all the piping to be electrically insulated from the tank; if stærkstrømsreglemetet require electrical grounding of the tank and / or piping must be installed Zener barriers, so that normal operation can not run current between piping and tank. For underground tanks that are outside of cathodic protection, all connections to the tank to be involved in protection.
Other types of piping systems shall separately type approved in their entirety, including collection methods. For plastic pipes, see Annex 7.
2. THE UNDERGROUND PIPES
The following metalrørsystemer is regarded as type approved:





1)


Tubular steel protected with hot dip galvanizing or paint.



2)


Copper pipes. Collections must be carried out as specified in section 1, no. 4.




Embedded pipes can be considered supernatural if they are cast in concrete or be walled in masonry, the inner walls or floors that are effectively free of soaking from the underlying soil, and not for any other reason are exposed to prolonged or frequent periods of soaking. By embedding that does not fall under the above categories are considered as pipes underground.
For flexible connections between the oil burner and rigid pipes to be used hoses that are specially made for the purpose.
Appendix 3
Underground horizontal cylindrical steel tanks with a capacity of 100,000 liters, see. § 7 paragraph. 3 and 4
1. BASIC REQUIREMENTS FOR DESIGN AND PERFORMANCE OF STEEL WORK
Steel tanks for burial be designed and manufactured in accordance with EN 12285-1 Class A with the additional requirements for exterior and interior corrosion protection, as provided in sections 2 and 3.
Tanks with volumes less than 6000 liters can be produced without manhole or inspection port, disregarding the requirement of EN 12285-1 section 6.9. However, there must be pejlehul. The EN 12285-1 required name plate placed near the filler neck tube. In addition, a copy of the data plate supplied with the tank; This copy shall carry the installer permanently attached to the filler neck or exhaust connection above the ground.
Alternatively, steel tanks for burial constructed by the dimensions in Table 1.1. The table shows also number and type of internal reinforcement rings. As reinforcement rings used T-profiles with the following name in DS / EN 10055, or equivalent profiles for corresponding norm:






designation


Dimension, mm.



T 80


80 x 80 x 9



T 90


90 x 90 x 10



T 100


100 x 100 x 11



T 120


120 x 120 x 13



T 140


140 x 140 x 15




The table shows alternative combinations of number and type of reinforcement rings, for example. 1 T 120 or T 2 100. Stiffening rings assumed symmetrical to the tank's center so that stiffened shell parts have equal lengths.

R ≤1,6 D
k ≥ 10 mm
Fig. 1 Horizontal Landscape cylindrical steel tank for burial.











Diameter d≤


End cap thickness
t1 ≥


Krempe radius
r ≥


Wrap, t2 ≥
The number and dimensions of reinforcement rings for tanks with a length up to L ≤







3000


3750


6900


10000


13000



1000
1150
1350
1500
2000


3
4 *
5
6
6


20
20
20
50
50


3
3
4
4
5


4
4
4
4
5


5
5
5
5
5


6
6
6
6
6


x
x
x
x
x



2500


7


50


6


6


6
1 T80
1 T90
1 T100


6
2 T80
1 T90
1 T100


6
3 T80
2 T90
1 T100



2900


8


50


7


7


7
1 T90
1 T100


7
1 T90
1 T100


7
3 T90
2 T100



3200


8



50


8


8


8
2 T90
1 T100


8
2 T90
1 T100


8
3 T90
2 T100



4000


10


50


10


10


10
2 T100
1 T120


10
3 T100
1 T120


10
4 T100
2 T 120



4200


12


50


12


12


12
2 T100
1 T120


12
3 T100
1 T120


12
4 T100
2 T120



* In lengths up to 3000 mm but 3 mm.
x length of 10,000 mm is not used for tanks with a diameter of 2000 mm and less.




Table 1.1. Alternative thicknesses and other dimensions of horizontal cylindrical tanks for burial. All measurements are in mm.
Other requirements to detail and execution in EN 12285-1 apply unchanged, even if the alternative dimensions used.
When the alternative dimensions used, must appear from the tank report and the tank warning label. All tanks must be leak tested with pressure as specified in EN 12285-1 before applying exterior and any interior coating. WEA directions for using this pressure must be observed.
2. EXTERNAL CORROSION PROTECTION
The tanks must be externally protected against corrosion by glass-fiber reinforced polyester, as set out below.
2.1. materials
For exterior coating only use materials that meet the requirements of DS 445, or equivalent requirements in the corresponding standard, and approved by PUFO under Chapter 6. However, used fiberglass mat area weight up to 750 g / m2.
2.2. Cleaning
2.2.1 tank outer surface thoroughly cleaned of all contaminants, weld slag, rust and mill scale and sandblasted to clean degree minimum Sa 2½ according to ISO 12944 Part 4.
2.2.2 If there is radii of less than 10 mm require with a suitable filler material is built up hulkehul by at least 10 mm radius of curvature.
2.2.3 During and after blasting, the relative humidity of the air does not exceed 80 per cent. If the coating can not be done the same day, the relative humidity must not exceed 60 per cent., Until the coating is applied.
2.3. Application of exterior coating
2.3.1 Coating work must be performed in rooms where the temperature of the air tank, tools and materials is at least 15 ° C. The temperature should not vary by more than 6 ° C. If the work is done by injection decommissioning, the relative humidity not less than 40 per cent.
2.3.2 By linings must supplier's instructions to be strictly observed. These requirements must be specified in the test certificate listed in this Annex, section 4.
2.3.3 The sandblasted surface is moistened with a thin layer of non-reinforced polyester.
In this layer, dyes or pigments are mixed into the polyester in a suit and a concentration that must be approved by PUFO.
2.3.4 Immediately thereafter, applied fiberglass reinforced polyester with fiberglass mat or sprøjteroving.
The polyester may - in addition to a maximum of 3 weight percent thixotrope - does not contain fillers, dyes or pigments of any kind.
To be used at least 750 g / m2 glass (nominally).
The glass portion must be at least 25 and not more than 30 weight percent.

The glass fiber reinforced layer to be cured, have an overall thickness of at least 1.5 mm.
2.3.5 While this layer is still adhesive, is applied to a layer extremely non-reinforced polyester, if necessary with the addition of wax solution to ensure tack-free curing.
In the cured state should this layer have an overall thickness of at least 0.4 mm.
2.3.6 Curing of polyester layer: Immediately after the coating is applied, the curable polyester in accordance with the supplier's instructions.
2.4. Requirements for the finished coating
2.4.1 The coating surface must be flat and smooth and without projecting glastaver.
2.4.2 The coating total thickness must be at least 1.9 mm.
2.4.3 The coating must be no visible pores, embedded foreign objects, blisters and other defects.
2.4.4 pore detection: After curing the coating everywhere subjected to high voltage pore detection at 15,000 volts test voltage. If there is spark breakdown, the coating should be repaired by material supplier's instructions and the test repeated.
3. INNER CORROSION PROTECTION
All single-wall steel tanks must be protected against internal corrosion according to the guidelines in Annex 5 and 6
For double-walled steel tanks are no requirements for internal corrosion protection.
4. TEST GUIDELINES FOR Glass Reinforced Plastic FOR EXTERNAL CORROSION PROTECTION OF SUB-SURFACE STEEL TANKS
4.1 Application for approval of materials sent to PUFO with certificate from one of PUFO recognized laboratory that the product when tested have met the following requirements.
4.2 Test specimens consisting of steel sheet coated on both sides and on the edges to the following tests can be made for test purposes of the actual materials. The samples must be cured in accordance with the manufacturer's instructions. These regulations must be attached to the application for approval.
4.3 Chemical resistance.
Specimens of approximately 50x50 mm weighed and left in tightly closed glass containers as specified below liquid mixtures in 28 days:





a)


Demineralized water at 40 ° C ± 2.



b)


5 per cent. aqueous solution of sodium carbonate in demineralized water at 40 ° C ± 2.



c)


Sulfuric acid diluted with demineralized water. pH = 4.0 ± 0.2. at 23 ° C ± 2.



d)


Acetic acid is diluted with demineralized water. pH = 4.5 ± 0.2 at 23 ° C ± 2.



e)


A mixture of n-heptane and o-xylene in the volume ratio 3: 1 at 23 ° C ± 2.




At the same time filed a reference specimen in the open air at 23 ° C ± 2
Liquid height in the jars marked. The fluid level is kept under daily observation and compensated for possibly caused shrinkage during refilling.
After 28 days of exposure out coupons up, wipe with absorbent paper or cloth and assessed visually by comparison with reference specimen. Simultaneously observed fluids, and any changes in their appearance described.
The following requirements must be met: Attacks on gelcoat, topcoat and barrier layer, which can be observed without aid, must not occur. However, an attack on gelcoat and topcoat allowed if it can be removed by wet or dry grinding grain no. 600, and a maximum of removing 0.1 mm of the layer.
Appendix 4
Ethereal steel tanks with a capacity of 200,000 liters, see. § 7 paragraph. 3, 4 and 5
1. MATERIALS
1.1. Basic material
The tank must be made of ordinary hot-rolled, alloyed, weldable steel that meets the requirements of DS / EN 10025 quality S 235, S 275, S 355 or equivalent standards.
1.2. Welding Welding consumables
Welding consumables must be adapted to the base material. The filler materials must be tested and approved according to EN 439, EN 440, EN 499, EN 748 or EN 756, depending on the selected welding process or equivalent standards.
1.3. documentation
The steel must be supplied with a certificate that at least meets the requirements for work declaration (2.1) according to EN 10204, or equivalent certificate after similar standard.
2. CONSTRUCTION

A. Box-shaped tanks and oval tanks up to 6,000 l
Thicknesses in headboards, floor and ceiling shall be thought





-


over 250 liters and 2,000 liters of at least 3 mm,



-


from 2,000 liters up to 4,000 liters be at least 4 mm and



-


from 4,000 liters up to 6,000 liters of at least 5 mm.




Tank height should not exceed 2 m. Gavle, sides and bottom must be provided with bracing, if the dimensions exceed 1 m. Box-shaped tanks shall have a single sided fully or double sided welding joints, except the ceiling. In oval tanks, welding joints to min. 200 mm above the tank bottom being single sided fully or double sided.
The tanks must be equipped with supports, so the bottom does not placed directly on the surface of the substrate. For oval tanks must be at least 5 cm between the ground and the tank bottom. For box-shaped tanks must be at least ¼ of the width of the tank between the substrate and the bottom of the tank.
There must be pejlehul.
B. Cylindrical tanks
Cylindrical tanks shall have domed heads. The design and dimensioning can be done by Fig. 2 and Table 2.
The tanks must be equipped with supports, so the bottom does not placed directly on the surface of the substrate. There must be at least 5 cm between the ground and the lowest part of the tank. The support must allow access to the bottom of the tank.

R ≤1,6 D
k ≥ 10 mm
Figure 2. Develop tank











diameter
D ≤


End caps
thickness
t1 ≥


Wrap t2 ≥ for L ≥


Krempe
r ≥






3000


3750


6900


10000


13000




1150


4 *)


3


4





20



1500


6


4


4


5




50



1750


6


5


5


5




50



2000


6


5


5


5




50



2500


7


6


6


6


6



50



2900



8


7


7


7


7


7


50



3200


8


8


8


8


8


8


50



4000


10


10


10


10


10


10


50



4200


12


12


12


12


12


12


50



*) In lengths up to 3000 mm but 3 mm.




Table 2. Sheet thickness for cylindrical tank without reinforcement rings. All measurements are in mm.
3. manhole
3.1 tanks of 6,000 liters and above shall be equipped with at least one manhole with a diameter of not less than 500 mm and closed with cover.
3.2 must be to achieve complete sealing between the frame and the cover, a packing of a material which is resistant to the tank contents.
4. SPRÆNGLEM
Vertical standing cylindrical tanks of 10,000 liters and above shall be provided at the top with a sprænglem dimensioned on the basis of:





d = 100






where
d = sprænglemmens diameter (mm)
v = tank volume (m3)
p = tank burst pressure (bar)
some of Emergency Management approved calculation method or similar method.
If sprænglemmens diameter is 500 mm, can replace a manhole.
5. WELDING
Welding is performed according to the same guidelines as those for underground tanks applicable, see EN 12285-1 par. 8.
6. DENSITY TEST
Within the tank is applied to internal or external corrosion or other surface, it must be leak tested as specified in EN 12285-1 par. 9.2.
7. CORROSION PROTECTION
A. External corrosion protection
External corrosion protective coating must be at least equivalent to the examples specified for ISO 12944, corrosion category C3: Corrosion protection of steel structures, or performed in similar quality for similar norm.
For indoor tanks required, however, no external corrosion protection.
B. Internal corrosion protection
All single-wall steel tanks must be protected against internal corrosion according to the guidelines in Annex 5 and 6
For double-walled steel tanks where installed surveillance, no requirement for internal corrosion protection.
Annex 5
Internal corrosion protection of steel tanks, cf.. § 7 paragraph. 3, 4 and 5 and § 14 paragraph. 3
1. BASIS
Internal corrosion protection of single-wall steel tanks for example. consists of one or more of the following measures:





-


coating of the tank bottom inner zone.



-


coating the entire inner surface of the tank.



-


installation of sacrificial anodes inside the bottom of the tank.




-


arrangement of the drain from the tank absolute lowest point.




Internal corrosion protection can be omitted for tanks with double-walled construction and monitoring of the space between the outer and inner container.
The internal protection to be described in the PUFO submitted application. This applies to both the production of new tanks as execution / renovation of internal corrosion protection in tanks which have already been put into use. The method and the materials used must be approved by PUFO.
2. COATING OF TANK BOTTOM ZONE
2.1 General
New tanks can the manufacturer be protected against internal corrosion by performing a coating tank bottom zone. There can be used organic coatings which only acts to form a barrier, or inorganic / metallic coatings which also act as sacrificial anodes.
Approval is granted only to tank manufacturers, has an approved production of tanks manufactured in accordance with Annex 3 or 4, which either have proven to be able to meet the modalities of working, or has a contract with a subcontractor that meets claims.
Must be used materials and methods that are approved by PUFO according to the guidelines in Annex 6, or similar tests which can be considered to provide similar protection and durability.
2.2 Special requirements for tank construction
In addition to the requirements of Annex 3 or 4 the following applies for the tanks to be protected against internal corrosion with an organic bottom zone lining:
Longitudinal welds in the making and welds the ends shall be placed at least 200 mm above the tank bottom, measured in the vertical line.
In the part of the tank being coated, any sikke- or overlap welds between the end plates and lining of welded inside. Likewise, both fillet welds on internal reinforcing rings full welded. The concave side of the interior walls must opsvejses in accordance with EN 12285-1, Table 6, no. 7a.
The welds must have a surface as smooth as possible. All sheet metal and profile edges that are not covered by welds, must be rounded off by grinding to a radius of at least 1.5 mm.
After completion of the linings must be adhered a protective plate on the bottom of the tank vertically below it or the connecting pieces intended to be used for mirroring.
There are no particular requirements for the design of tanks protected with inorganic coatings with sacrificial anode effect.
For tanks with volumes less than 6,000 liters, which built outside manhole, the application for approval specifically explain how to achieve optimal quality of both coating as tank at all.
2.3 Coating extent
The coating must be carried out on the entire part of the inner surface that is up to 200 mm above the base when it is horizontal, but at least 100 mm above the suction pipe mouth.
2.4 Preparation for lining
Cleaning and internal lining shall be made only after the tank is finished welded and leak-tested.
The part of the tank's inner surface to be coated is cleaned of all contaminants, weld slag, rust and mill scale similar to Sa 3 according to ISO 8501-1.
After cleaning, the relative humidity in the tank does not exceed 80 per cent. If lining can not be done the same day, the air in the tank is kept below 60 per cent. relative humidity.
In connection with the approval of specific products for interior coating may be subject to other requirements for cleaning. There should be special consideration to achieve optimal adhesion.
2.5 Applying internal coating
By linings must vendor claims to be strictly observed. These requirements shall be specified in the Annex 6 shall test certificate for approval of the internal lining materials.
2.6 Requirements for the finished coating
The finished coating must cover completely and have no visible pores, embedded particles, bubbles or other defects.
After curing must be checked that the permit prescribed mean and minimum layer thicknesses are observed. Measurement should be performed according to ISO 2808 method Nos. 6 and be taken across the treated area, excluding any reinforcement rings at the rate of 4-6 per. m². The assessment is made according to DS / R 454, Annex D4 Method 1 using the 90-10 rule.

To be performed 100 per cent. pore detection voltage of organic coatings. Pore ​​detection is carried out with the stated in the approval test voltage, or a proportionally increased test voltage, if actually sustained a substantially thicker layer than foreseen in the authorization. Any pores must be repaired by material supplier's instructions and the test repeated.
2.7 Inspection
For tanks under 6,000 l are no requirements for inspection during the usage period.
New tanks of 6,000 liters and above, protected against internal corrosion by coating the bottom zone shall hold the coating inspected within ten years of tank manufacture, and after approval for continued use then again every ten years.
There must not be the renovation of factory-made floor coverings zone by methods that are approved only for its performance under shop conditions.
3. COATING OF FULL TANK INTERIOR SURFACE
3.1 General
Both tanks have already been put into use, as new tanks can be protected against corrosion by performing a complete coating of the entire tank interior. This assumes that the tank is equipped with manhole.
New tanks, which is intended to be protected in this way, to be carried out with every detail permissible for internal coating according to EN 12 285-1-1. Please also refer to Section 2
I thought, who has already been put into use, the coating must be able to bridge the damaging details like lap seams and what welds without inner of welding, concave corners by internal partitions, intermittent fillet welds on reinforcement rings, etc. must be used materials and methods type approved by PUFO according to the guidelines in Annex 6, or similar tests which can be considered to provide similar protection and durability.
Approval to conduct internal lining in tanks which have already been put into use shall be issued only to companies that have proven to be able to meet the modalities of work. This occurs in two steps:





-


On the basis of the company's written procedures for the work, proof of the contractors' qualifications and assessing the company's ability to effectively carry out the work in accordance with the procedures may be issued a provisional approval.



-


During this preliminary approval to coating in tanks performed under the supervision of one of PUFO approved independent third party.




Once the company has demonstrated its ability to perform all phases of the coating work without comments or other assistance from supervision may be granted an unconditional approval.
3.2 Preparation for lining
The tank must be cleaned completely from residues of oil, sludge and corrosion products. At this stage, to achieve a degree of purity of the steel is equal to SA 1 to ISO 8501-1. The company chooses cleaning method, as long as the specified purity is obtained.
There must be carried out inspection and reporting in accordance with the guidelines in Annex 9. The works tightness test of the tank with a positive result. The report shall be submitted to tank owner, who must decide whether work should be continued.
Thought inner surface cleaned of all contaminants, weld slag, rust and mill scale similar to Sa 3 according to ISO 8501-1.
After cleaning, the relative humidity in the tank does not exceed 80 per cent. If lining can not be done the same day, the air in the tank is kept below 60 per cent. relative humidity.
In connection with the approval of specific products for interior coating may be subject to other requirements for cleaning. There should be special consideration to achieve optimal adhesion.
3.3 Applying internal coating
By linings must vendor claims to be strictly observed. These requirements shall be specified in the Annex 6 shall test certificate for approval of the internal lining materials.
There must be particular attention to ventilation and maintenance of temperature in the tank during the curing period.
3.4 Requirements for the finished coating
The finished coating must cover completely, including containment of any reinforcement rings and have no visible pores, embedded particles, bubbles or other defects.

At a lining in tanks that are outside protected tarmac (underground tanks from before 1970) and subsequently equipped with external cathodic protection, use transparent products for the inner coating, so that the spots that may indicate corrosion from the outside, discovered.
Achieving complete cure must be documented by testing the coating hardness. Hardness testing must be performed in places where korrosionsbekyttelsen is less critical, for example. on top of the reinforcement rings in the upper quarter of the tank or on an inwardly protruding edge of the manhole.
After curing must be checked that the permit prescribed mean and minimum layer thicknesses are observed. Measurement should be performed according to ISO 2808 method Nos. 6 and be taken across the treated area, excluding any reinforcement rings at the rate of 4-6 per. m². The assessment is made according to DS / R 454, Annex D4 Method 1 using the 90-10 rule.
To be performed 100 per cent. pore detection voltage. Pore ​​detection is carried out with the stated in the approval test voltage, or a proportionally increased test voltage if actually sustained a substantially thicker layer than foreseen in the authorization. Any pores must be repaired by material supplier's instructions and the test repeated.
3.5 Inspection
Covering carried in tanks which have already been put into use, be inspected within 5 years of coating performance. This range may be reduced if the thought was in poor condition before the coating performance.
If the coating by first re-inspection are in good condition, be allowed to continue to use in more than 10 years until the next re-inspection.
If it is necessary to undertake renovations during the first inspection after coating performance, authorizes the continued use of a maximum same number of years as determined by the coating original version. If, at the places where the renovation of the coating is necessary, corrosion is found which further reduces the residual wall thickness of the tank relative to its state before the initial execution of the coating, the range is reduced to the next inspection proportionately.
4. fitting active anodes INSIDE TANK BUND
4.1
Steel tanks can be protected against internal corrosion by fitting sacrificial anodes on the tank bottom.
4.2. materials
The anodes for the alloy used must be approved by PUFO.
The geometric shape of anodekæderne be type approved by PUFO. Typically blocks of anode material molded on to a steel wire.
4.3 Special requirements for tank construction
Tanks which protected against internal corrosion by fitting sacrificial anodes shall be designed with a well-defined low area at the bottom where the anodes can be mounted. Especially for box-shaped tanks must base formed by at least 10 per cent. tilt to one side or with one break of at least 10 per cent. slope to the sides. Other configurations can be approved.
There are no particular requirements for oval tanks, cylindrical tanks with a horizontal axis and cylindrical tanks with a vertical axis and domed bottom wall. These designs have a naturally low range.
4.4 Design of sacrificial anodes
The anodes are typically formed as blocks cast onto a wire or a rod. No more than 40 mm between each anode element.
Other configurations can be approved.
4.5 Simplified calculation of the amount of anode metal
For cylindrical tanks with a horizontal axis and volume of 6,000 l and above the amount of anode metal is calculated as follows:
Alternative 1:
Magnesium anode chains to be made up min. 1400 g per anode metal. running meter.
In tanks with less than 1750 mm mounted one chain along the entire length of the lowest produces. In tanks with a diameter of 1750 mm or more installed two such anode chains.
Alternative 2:
Zinc anode chains must be prepared with min. 4500 g per anode metal. running meter.
There installed one such chain in the entire length of the lowest generating.
4.6 Basic calculation of the amount of anode metal
For other shapes than cylindrical tanks with a horizontal axis, it is necessary to use a more basic calculation:
The area wetted by 5 cm water level is calculated. Similar to this area mounted at least 1.79 kg magnesium per. m2, alternatively 4.80 kg zinc per. m2.
4.7 Attachment of the anode chains

Anodekæderne clamped to the bracket, which is welded in the tank, for bolts in man cover or the like, so as to achieve a secure and durable metallic contact between the anodes and the tank. By reinforcement rings or similar irregularities in the bottom zone must anodekæden off and on both sides secured as in the tank bottom end.
When retrofitting of anodes in tanks outside corrosion protected with polyester / fiberglass (underground tanks manufactured after 1 April 1970) must not be welded to the container sleeve and the end panels, as this may damage the exterior coating.
4.8 Inspection
For tanks under 6,000 l made without manhole is no requirement for inspection or replacement of anodes.
For tanks of 6,000 liters and above, which are protected against internal corrosion by fitting sacrificial anodes, the tank owner arrange for cleaning and inspection at least every 10 years. If the anodes are more than half consumed must be replaced.
If there is no visible consumption of anodes, the electrical contact to the tank checked. If there are signs that the switch has failed, there must be an expanded inspection of the tank for corrosion.
Appendix 6
Guidelines for the approval of materials for internal lining of steel tanks, see. § 7 paragraph. 3, 4 and 5 and § 15 paragraph. 2
1. GENERAL
For internal coating of oil tanks only materials approved by PUFO.
Application for approval of materials sent to PUFO with the following documents:





a)


Supplier's material description and detailed instructions as outlined in section. 3.



b)


Certificate from a laboratory that the product when tested, have proven to meet the following specifications. PUFO may require the testing takes place at one of PUFO designated laboratory.



c)


PUFO may grant approval on the basis of comparative tests conducted by independent laboratories. Examination of submitted material will be made by one of PUFO designated specialist expense of the applicant.




2. SUBMISSION OF SAMPLES
In the laboratory, samples in the laboratory desired number, usually 32 units. hot-rolled steel 70x150x3 mm covered on both sides by sand blasting to Sa 3 according to ISO 8501-1 compliance with the stated by the supplier påføringsforskrifter and 1 liter of coating material.
The laboratory shall have the right to take samples from the supplier's warehouse or production. For sampling applies ISO 15,528th
3. MATERIAL DESCRIPTION AND USE MANUAL
With the above samples be sent a description of the product and a complete manual, including including the following points:





a)


Instructions for mixing, dilution and useful life (pot life) of the coating material.



b)


Recommended methods for application and to adjust the viscosity as a function of temperature.



c)


Information on the dry matter content as the basis for calculation of material consumption.



d)


Climate conditions (limits for temperature and humidity) for the execution and curing the coating.



e)


Limits of the layer thickness for each lining and for the finished coating.



f)


Drying and curing of the individual applications and the total coating.



g)


Information on the procedure for the renovation.



h)


Information about the proper storage of temperature and security.





4. LOOK
The final coating must have a smooth, uniform surface that is easy to clean. The color should be so light that rust stains will be easily visible. When applied in several layers, the individual layers having distinctly different hue.
Testing: Visual considered.
5. PROPERTIES BY APPLICATION
The product should be applied by commonly used methods of application. It should be possible to make a satisfactory restoration of a coating that has been in use.
Testing: The application properties tested by the supplier.
Renovation to be carried out on samples that have undergone testing by section. 8. There should be able to achieve satisfactory adhesion after the specified curing time.
6. HARDENING
Following the manufacturer's specified hardening time (max. 10 days at 23 ± 2 ° C), the coating must be so hard and chemically resistant, tests 7-12 can be passed.
7. THICKNESS
Check that the layer thickness of the sample pieces are within the stated by the supplier limits. Tests carried out in accordance with DS / ISO 2808 with an adjusted magnetic thickness measuring device with an accuracy of ± 5 per cent.
8. RESISTANCE
The coating must be dense and pore-free.
The test is carried out with a suitable tester. The applied methodology specified in the certificate, must abide by the coating art, including the possible use of conductive primer, but the pores in the insulating portion of the coating will safely recorded. The laboratory must determine the test voltage as 50 per cent. the breakdown voltage of the proven coating thickness.
9. ADHERENCE and impact resistance
The coating must have a purpose for satisfactory adhesion and impact resistance, including in order that the tank bottom must be walkable during tank inspections.
Pending the development of appropriate test methods, the assessment made in a manner that the laboratory choose. The method used and the laboratory assessment must appear in the test certificate.
For adhesion testing is recommended that SS 18 41 71 used.
10. RESISTANCE AGAINST PETROLEUM PRODUCTS
Testing: In each of the following tests exposing 4 plates immediately after the expiry of the supplier stated 2 ° C hardening, and 1 plate which also has been stored at 60 ± in four days. The plates are so placed in the environmental fluids that 2/3 of the plate area is covered by the liquid. The coating total thickness of each sample piece measured before the first test.
As simulants used:





a)


250 ml dest. water + 450 ml of a mixture of 60 per cent. isooctane, 5 per cent. benzene, 20 per cent. toluene, 15 per cent. xylene (by volume).



b)


225 ml dest. water + 25 mL of isopropyl alcohol + 450 ml of the above mixture.




Test liquids are shaken in a shaker for 1 hour.
2 x 5 plates remain in the environmental fluids for 21 days at 50 ± 2 ° C and 2 x 5 plates is allowed to stand for two years at 23 ± 2 ° C, in both cases in tightly closed glass and in the dark.
After the exposure may not be visible solution or dissolution of the coating, blistering or under armor. Less color changes allowed.
24 hours after exposure measured coating hardness by DS / ISO 2815 (Buchholz), whereby the hardness is not reduced more than 20 per cent. For materials for clothing in thicknesses greater than 2 mm is allowed, however, the deterioration of that hardness of up to 50 per cent.
Approval is given on the basis of 21 days of testing. Approval shall be withdrawn, however, if deemed necessary after the expiry of two years of testing.
11. RESISTANCE AGAINST CLEANING





a)


An unused sample plate is placed on half-immersed in boiling deionised water was added wetting agent, eg. 1 per cent. tetrapropylenbenzensulfonat. The sample must not touch the well bottom and sides. After exposure for 30 minutes may not be detectable dissolution, adhesion, blistering or rusting.



b)



An unused sample plate is exposed for 18 hours at 23 ± 2 ° C in a solution of 10 per cent. sodium carbonate in water. After picking up may not be detectable dissolution, adhesion, blistering or rusting.




12. IDENTITY VERIFICATION
As a control of the supplier's material specification and for use in future identity verification, the following analyzes are made:





a)


Determination of density (DS / EN / ISO 2811).



b)


Determination of volatile and non-volatile components (DS / ISO 1515).



c)


Determination of the content of pigment.



d)


Infrared spectrum.



Appendix 7
Plastic pipes for burial as provided. § 7 paragraph. 4





1)


Plastic pipes for oil and oil product fumes can be approved for use in buried condition on the basis of the guidelines in this Annex. Over underground piping must be performed in metal pipes under the Emergency Management Agency guidelines for flammable liquids.



2)


Piping should conform to EN 14 125.



3)


Fluid-carrying plastic pipes must be carried over into empty pipes or carried out by integral double-walled tubes with the possibility of leakage monitoring. If not installing a surveillance system, the space must be open at least one end. The openings to the space must be available for inspection.



4)


Pipes that can only come to contain vapors of petroleum products, for example. vent pipe and dampreturrør from dispensing pumps can be single misplaced without casing pipe. Feeding tube may also be single without the casing pipe, where they are carried with uniquely appropriate to the tank, and without any possibility of liquid may remain in the tube. There must be a minimum fall of 1:10. By the fall of less than 1:10 to be feeding tube placed in empty pipes.



5)


Fittings, which mislaid directly buried, must be made of non-corroding material or corrosion protected with shrink-wrap or with self-amalgamating tape. The corrosion protection must be subjected to high voltage pore detection at a voltage of 15000 V. Alternatively, fittings mislaid in dry wells.



6)


The application for approval must include instructions for installation in Danish, and written so that it is readily understood by the installer.



Appendix 8
Plastic tanks for above ground installation, see. § 7 paragraph. 3, 4 and 5





1)


Rotational molded tanks made of polyethylene can be approved according to DS / EN 13341 and must have a minimum wall thickness of 4.5 mm.



2)


In addition to the requirements of DS / EN 13341 must samples cut from the produced tanks tested for stress cracking, "ESCR (environmental stress cracking resistance)."





There must be carried out testing according to ASTM D1693. This method 'condition B "used in this context with minor modifications. The test is performed on samples that are cut from a tank. The specimen shall contain the tank's inner surface. Prepare at least 10 specimens with dimensions of 38 ± 2.5 × 13 ± 0.08 mm and a wall thickness of between 3.0 and 3.3 mm. The samples kærves the sample parallel to the long edge and the inner surface; the notch is carried out with a sharp blade-like knife. Of the slot length should be 18.9 to 19.2 mm and have a depth of between 0.50 to 0.65 mm. The test pieces are bent by a tool 180 ° around long edge of the sample and such that the notched surface facing outwards of the U. shaped items held in a holder which is placed in a test tube, which is filled with fuel oil. The test tube is closed and put in an oven at 50 ± 1 ° C.
Acceptance Requirements: After 1000 hours, all specimens be no breaks.





3)


The application for approval must include instructions for installation in Danish, and written so that it is readily understood by the installer.



Appendix 9
Guidelines for inspection and inventory of steel tanks, see. § 17, § 28 and § 42 paragraph. 7
1. EXTERIOR INSPECTION
For above ground tanks must be made inspection from the outside. This shall include at least the following:





a)


Statements and other damage in the tank foundation. Where cases of sentences to be carried out an expanded inspection of welds at nozzles, where the pipelines connecting the tank to the environment, and any welded supports.



b)


Drainage of rainwater and possible. waste.



c)


Dent formations in the tank.



d)


The registration of the exterior paint mode.



e)


If not on the same occasion performed internal inspections, to be carried out ultrasonic thickness scan of a belt at the tank's lowest point and a belt at the tank's highest point.




If the outside is not available due. Insulation or the like, the location of any damage to outerwear noted. If there are signs of water ingress, the relevant parts of the insulation removed, so its condition can be checked and if necessary, repaired, and then the tank wall condition associated with moistened isolation can be determined. Location of thermal bridges from supports, etc. listed on the sketches, so these sites can be found inside and inspected carefully.
2. DRAINING AND CLEANING
The tank must be completely emptied and cleaned.
In tanks with internal lining, fully covering or bottom zone, all sludge is removed.
Any loose coating must be removed.
In tanks without inner liner must sludge and the like, and rust is removed, so the steel stands freely. A few rust stains are allowed to be outdone, but these must then explored the depth of any rust.
3. INTERIOR INSPECTION
For steel tanks without internal corrosion protection and tanks corrosion protection with sacrificial anodes, coated bottom zone must at least be made:





a)


Checking the condition of any. interior protection (state of coating consumption of anodes).



b)


Checking for internal corrosion of the steel. Location, extent and depth noted on the sketches.



c)


Measurement of thickness.



c1.



For underground tanks with external polyester / fiberglass material (tanks buried after 1970) conducted at least 3 measurements randomly placed on each end plate and at least 3 measurements per. m length of the shroud. These should be distributed so that the whole circumference and the entire length covered equally. These measurements should confirm that the expected thickness of the steel is present.



c2.


For underground tanks installed before 1970, external corrosion protected tarmac and possible. (Later installed) external cathodic protection, and that has not been internally coated with polyester / fiberglass, should be associated with internal inspection and maintenance carried out an expanded range of thickness measurement on steel wall. These measurements should include a number of circumferential belts of a width of 10 cm placed partly at both ends, partly distributed over the shell length to at most 3 m between two neighboring belts.





If the measurement is carried out by manual spot metering divided belts in the fields of at most 10 x 10 cm, in each of these fields is measured in individual points spaced apart no more than 3 m, and the minimum thickness within each 10 cm-field are reported on the diagrams. If the spread of these measurements suggest external corrosion with a depth of more than 2 mm, perform actual scanning of the entire area where there is implied external corrosion.



c3.


For above-ground tanks should be taken of any supports, thermal bridges, bad state of external protection etc. at the location of thickness measurements.




For steel tanks with a complete internal coating must pavement condition described.
For steel tanks where there has been a complete adequate internal lining with polyester / fiberglass requires that the coating is transparent. It should be verified that this is fulfilled and also must pavement condition described.
If there are rusty or black spots under the coating is a risk that this is due to corrosion from the outside. If such spots are less than 1 cm in diameter recommended new inspection interval for max. 5 years. If the spots are between 1 cm and 5 cm in diameter determined proportionally shorter new inspection interval. If such spots are more than 5 cm in diameter, the coating must be removed and the steel residual thickness measured in the areas concerned. If the steel thickness is acceptable, see section 5, and the stain is considered to be due to causes other than corrosion, can be made sandblasting and renovation of the coating. If the steel thickness is not acceptable, the tank must be dismantled. If the presence of corrosion recommended cutting out a piece of the tank wall in order to check on the ground outside is contaminated.
4. tilstandsrapport
There must be prepared sketches of the tank ends and unfolding of shroud. These plotted location of manholes, nozzles and other fittings, welds, reinforcement rings, sacrificial anodes etc.
The location of all observations plotted on these sketches, such as thickness measurements, defective insulation (external), dents, defective welds, damage in coatings, corrosion, etc., With reference to more detailed background reports where these are appropriate.
The State shall include the recommendation of time for the next inspection.
5. ASSESSMENT OF THE THICKNESS MEASUREMENTS
Thickness measurements must be evaluated according to the following:
If the remaining thickness at any point falls below half of the original thickness (which should always be min. 2.5 mm back), precautions should be taken to prevent further corrosion. Typically, fully covering internal lining considered. Alternatively, the inspection interval is made correspondingly shorter, but it is only recommended to use this opportunity to keep a tank in operation for a short time in order planned demolition.
If the thinnest point of the tank is less than 2.5 mm, but more than 0.5 mm, the interval to the next inspection shall be reduced proportionately, regardless of what precautions it taken to prevent further corrosion.
If the thinnest point is 0.5 mm tank must be dismantled within a year.
Isolated pits has no effect on the container's strength, but they mean an increased risk of leakage, and that no additional measures beyond the above.

Larger contiguous corroded areas to be assessed in more detail in order to determine if the mechanical strength is significantly reduced.

Official notes 1) This Executive Order contains provisions implementing parts of Council Directive 89/106 / EEC of 21 December 1988 on the approximation of the laws and regulations on construction products (Official Journal 1989 no. L 40, page 12). Order no. 633 of 27 June 2005, this notice replaces, has as draft been notified in accordance with European Parliament and Council Directive 98/34 / EC of 22 June 1998 laying down a procedure for technical standards and regulations, as amended by Directive 98/48 / EC.