Conditions Of Fire Safety In Welding And Heating Resin

Original Language Title: podmínky požární bezpečnosti při svařování a nahřívání živic

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Read the untranslated law here: https://portal.gov.cz/app/zakony/download?idBiblio=49200&nr=87~2F2000~20Sb.&ft=txt

87/2000 Sb.



DECREE



The Ministry of Interior of 31 July. March 2000, laying down the conditions

fire safety in welding and heating in hot melt resin containers



Ministry of the Interior shall establish in accordance with § 24 para. 2 Act No. 133/1985 Coll.

about fire protection, as amended by Act No. 203/1994 Coll. (hereinafter the "Act"):



PART THE FIRST



INTRODUCTORY PROVISIONS



§ 1



(1) this Decree lays down the conditions for fire safety



a) welding, which means a thermal bonding, grooving and heat

cutting of metal and non-metallic materials, if they are carried out in an open

flame, an electric arc, plasma, laser, electrical resistance

friction, aluminotermickým welding, as well as the use of electric

pájedel and gas soldering lamps



(b) heating in hot melt resin) containers.



(2) the conditions of fire safety laid down by this Decree shall be subject

on welding and heating in hot melt resin containers operated by

legal entities and natural persons engaged in business

the activities under the specific legislation. ^ 1) on other natural person ^ 2)

fire safety terms and conditions also apply, only if it is not further

unless otherwise provided for.



§ 2



For the purposes of this Ordinance, means the



and a dangerous concentration-concentration) of a mixture of flammable gases, vapours

or dusts with air or other oxidovadlem from 25% of the value of the lower

upper explosion limits for gases, vapours and dusts,



(b)) space with danger of explosion followed by fire-space

structurally separate and neoddělený including the device or parts of it (eg.

tray, ventilation pipes, ductwork), in which may arise

dangerous concentrations or explosives or substances

containing explosives or other substances and materials, and in combination with the

welding technology can be the cause of the explosion and subsequent fire,



c) area with risk of fire-a space-separated and construction

neoddělený including the device or its part (for example, the ventilation stack

piping, ductwork), in which flammable or flame retardant

supporting substances solid, liquid or gaseous, or flammable substances

contained in structures or devices, and in the case of the use of

the welding technology may cause them to ignite and the emergence of

fire,



(d) the adjoining space-space) located above, below and next to the

welding workplace, that may be vulnerable to the emergence of, or enhancement

fire due to the activities carried out at the workplace, svářečském



e) basic fire-safety measures-technical and

organisational measures to ensure the fire safety of before,

during and after the welding, including the actions resulting from the

of the species used welding equipment,



(f)) special safety measures of fire-technical and

organisational measures to ensure the fire safety of before,

during and after welding with regard to a particular kind of risk

(b)) and (c)), the location of the welding workplace, fire

security of the building, fire protection system

not only on the svářečském site, but also in adjacent areas by

(d)),



g) welding special fire safety measures-

welding in space with the risk of fire or explosion, followed

by fire, including the adjacent space, requiring special fire

the security measures referred to in subparagraph (f)),



h) svářečským the workplace-working space set aside for welding

including technological devices used for welding; for welding

the workplace is also a technological position and handling

area on which to conduct operations related to welding,



I) fire supervision-an activity designed to fire safety in

during the break, and after completion of welding with special

fire safety measures



j) basic welding risk-the risk that may lead to the formation of

or spread of fire or explosion followed by fire as a result of the effects of

heat, radiant or convection (e.g. flame temperature or

the electric arc, spatter of hot metal and slag particles, leakage

hot mass of cutting joints, thermal radiation, high temperature of welded

materials, high temperature gaseous fumes welding) and the occurrence of the

flammable and combustion supporting gas or circuits

welding current, a



to specific risk-risk) welding workplaces in terms of

the occurrence or spread of fire or explosion and subsequent fire, which is not

completely distinct entities with competence for welding (e.g..

flammable insulation under material, hidden pipes leading flammable or

combustion-supporting substances, flammable surface indoor coating or heat

neizolujícím material, open channels leading flammable liquids),



l) welding electric shock-welding with coated electrode,

welding under welding flux, electroslag welding, welding

electrode in inert gas protection (WIG/TIG) welding melting

electrode in inert gas protection (MIG) welding melting

electrode in the protection of active gas (MAG) welding electric

high-frequency welding, welding or cutting and coating

plasma cutting, welding and slotting a carbon electrode



m) the start of welding-the first and each subsequent putting into

working condition (e.g., burner, an indication the welding

device) after the previous exit from welding

the workplace.



PART TWO



THE CONDITIONS FOR THE START OF WELDING AND WELDING



§ 3



The conditions for the start of welding



(1) before the start of welding will evaluate the fire safety conditions

in areas in which the weld, as well as in adjacent

areas that are not requiring special welding fire

precautions [section 2 (b), (g))]. When it is evaluated and fire

danger flammable substances contained in construction

structures (eg. walls, ceilings, bulkheads). A change in

the fire safety conditions during welding, you can continue

After the new evaluation and ensuring adequate basic or

Special fire-safety measures.



(2) for welding requiring special fire safety measures

the shows in writing. It comes from the requirements

resulting from the law and regulations on fire protection. ^ 3) temperature values

some possible sources of ignition during welding are listed in the annex

# 2 table 1. The range of special fire-safety measures

listed in annex 1.



(3) in determining the special fire-safety measures based on

also from the supporting documents relating to fire safety equipment

even the technological process, which are not part of the welding technology

and occur on the svářečském site, as well as in adjacent

spaces.



(4) before the start of welding



and to evaluate possible) provides fire risk in relation to the type of

welding, welding State workplace and adjacent areas,

used equipment and materials, and responds to them in the fire

security measures,



(b) define the permissions and obligations) people to ensure fire safety

at the start, during welding, the welding is interrupted, and after

its end,



(c)) sets out the requirements to participants requiring special welding

fire safety measures and on the person carrying out the fire,

including intervals for performance of this oversight during the break and after the end of

welding, if not fire a continuous (§ 4 para. 1 and 2,

Annex No. 1),



(d)) sets out the requirements for a safe stay and movement of persons, including prohibitions,



e) shall ensure free escape route including access to them,



(f)) specifies the operating conditions of the technical equipment and technology

process, including the terms of any downtime or restrictions

operation,



g) provides for additional measures with regard to the type of activity, or

risk-specific welding workplace.



(5) against the generation and spread of fire or explosion, followed

the fire on welding work and in adjacent areas

perform basic fire safety measures and according to the specific

danger also special fire safety measures. With regard to the

operating conditions, it may be for one or more of the measures

consisting in particular in the



and the removal of combustible or combustion) that support or explosive substances,



(b)) or the sealing of non-combustible or inflammable substances, not easy

combustible material (flammability grade A or B according to ČSN 73 0862)

insulating a flammable substance from the ignition source so as not to

of ignition. Arc welding can be used for curtains, strips or screens

use a material corresponding to the requirements of standard values in a way


and in the distance, which safely protects against hot particles from the

welding works as intended by the manufacturer or importer; the overlay is carried out

so, to avoid the absorption of flammable substances into the covering material,



(c) the impact area or) cover of the track or direct and reflected

laser radiation of laser III. (b)), and (IV). class



(d) facilities hasebními resources) according to the nature of the workplace and the

welding technology,



e) measurement of the concentration of flammable gases, vapours of flammable liquids and powders

mixed with air or other oxidovadlem and maintaining concentration under the

the boundary of the dangerous concentration,



(f) design, cooling)



(g)) for the removal of dangerous workplace airing concentration

flammable gases, vapours, dusts,



h) deployment of technical equipment of hot spray particles

to reliably prevent exposure to Sparks, slag and metal particles.



(6) when welding, which requires a special fire

safety measures on construction and repeatedly or structurally similar

welding positions for which you can provide for this fire

security measures consistently, you may do so in the relevant

work or the technological procedure.



(7) when welding, to avoid such a heat welded and

other materials that would lead to loss of tightness or the integrity of the

the device, which would result in leakage of inflammable substances or was burning

supporting substances.



(8) the overlay and sealing of the flammable substances shall be carried out so that

the individual parts of the material used are not left unprotected openings

allowing the penetration of hot particles, flame or heat transfer.



(9) when welding, special fire safety measures

required the participation of at least two persons, including welders. To occupy the site once

a person can be only in the case of welding, when the welder is able to

all the tasks connected with its own welding and fire safety

measures alone.



(10) welding shall not commence, if



and are not fixed) fire safety measures with regard to the type and

instead of these works,



(b)), and the personnel involved on the welder welding and related

activities are not shown to be familiar with the conditions of the fire

safety,



(c)) are not subject to the conditions of fire safety,



(d)) on svářečském welder workplace cannot prove their professional

eligibility for the welding documents corresponding to the requirements of normovým

or normative documents according to ČSN EN 45020 or issued in the framework of the

permission of the accredited certification body in the Czech Republic; in

If it is not for a specific type of welding these regulations support

eligibility laid down, then the permissions of the corresponding manufacturer's instructions

or importer of the device.



§ 4



Conditions after the welding



(1) after completion of the welding requiring special fire safety

measures in the context of fire supervision inspects fire safety

welding workplace and adjacent areas and ensure the fire

supervision at set intervals (Appendix 1). Intervals shall be determined

with regard to basic, or specific risk analysis1

the workplace. The fire supervision time is 8 hours. In justified

cases, particularly when the heat cutting metals and complex spaces, is

When determining the time that is necessary to carry out the fire,

take into account the possibility of fire, even after 8 hours.



(2) fire supervision is exercised by the person specified with the prior written

set out the rights and obligations on this sight. Fire

carried out in the course of welding continuously. Welding is interrupted or

After the fire supervision after the specified time

or due to the nature of the work and the space after specified period of time in

intervals laid down special fire-safety measures.



(3) fire supervision after the welding is not necessary to carry out



and) if the welding workplace and adjacent spaces equipped with

operable electric fire signalling and stable extinguishing

device. If these spaces equipped with only an electric fire

alarm, fire supervision can be dispensed with only in the case that the

the place of the person will be able to make an initial fire-fighting action,



(b)) on permanent welding workplaces in the case that before the end of

welding could not happen to a contact of hot particles with flammable substances

and after turning off the technology does not contact combustible materials with the source

of ignition.



PART THREE



WELDING OF METALLIC MATERIALS



§ 5



Welding workplace



(1) a workplace designed for welding Welding project documentation

construction ^ 4) shall be construed as a permanent site for welding,; the other shall be considered as

for welding workplace transitional.



(2) Welding facility is secure so as to prevent, in particular,



and the risk of fire or explosion), followed by a fire and the spread of fire,



(b)) that make it difficult to create obstacles or prevent the escape of persons,



c) endangering the lives and health of people the basic and specific risks.



The above requirements also apply to adjacent spaces.



(3) parts of the equipment and materials are distributed on the workplace svářečském

so, in order to maintain the possibility of free passage and avoid cramped

and the connecting points. Welding equipment being secured so that

prevent their movements or the movement of their parts, and their

damage that would lead to the creation or the spread of fire or explosion with

then fire and any encumbrance to escape conditions of people.



(4) the Welded material stores in the workplace, so as to avoid

his movement or the movement of its parts, which could lead to

damage to the welding equipment, in particular damage to the moving conductor and

electrical parts, gas welding equipment, hoses, whose

the damage could lead to the creation or the spread of fire or explosion with

the subsequent fire.



(5) transitional welding stations are equipped with suitable extinguishing

equipment and other resources under special legal hasebními

legislation. ^ 5) outside of these fire extinguishers shall be equipped with at least two

portable fire extinguishers with a suitable filling, one portable

fire extinguisher dry powder extinguishing substances weighing at least 5 kg. In

When welding in the flat with respect to the type of welding, if they are not

immediately threatened by other areas of the object is the minimum

equipment one portable fire-extinguisher powder weighing extinguishing

of at least 5 kg.



(6) on the permanent welding workplaces does not save or store

flammable and combustion-supporting substances if they are not part of the technology.

In the case that such substances are in the technology necessary, shall be

fire safety measures to prevent the emergence and spread of options

fire or explosion followed by a fire, and to ensure the escape and evacuation

persons.



(7) orders and bans, or other important information on the

svářečském work and the devices are characterized by safety markings.

Warning and information tables with an indication of the type of gas and the amount of

cylinders shall be placed at the entry to the building, where they are

located.



(8) when welding on the premises from 2 m height on places that need to be

protect against the effects of these works, in terms of fire protection

the workplace provides protection. This band lays down minimum

the distance from which is removed before welding the flammable

materials or ensure their safe isolation, where appropriate, shall be made

other effective measures, in particular against the effects of hot particles. Protective

bandwidth in terms of fire protection is fixed individually, taking account of

to the technology used and the method of welding so that the center of the protective

bandwidth is always below the minimum welding and is designed as a circle of

radius of 10 m in the horizontal plane. When welding at height

in excess of 2 m for each additional 1 m height extends the protection zone

of at least 0.3 m to a height of 7 m; for each additional 1 m height is expanding

a protection zone of 0.1 m to a height of 20 m with increments.

added to the RADIUS. Protection for welding carried out in

altitudes in excess of 20 m are set individually. When the application

technologies that use compressed gases (e.g. cutting) and

interaction between the stream of air for air speed in excess of 1 m.

SEC-1, the protective distance extends into areas defined by an ellipse to the

distance 20 m based on individual assessment of fire risk.



(9) The Permanent welding workplaces with prominent manner characterized by

the definition of



a) fire safe distance, if its definition set out in the

the documentation for the device, or



(b)) the protection zone (paragraph 7).



(10) the Conductors of electric current and the hose to the gas can also include

the device shall be kept and stored so as to avoid any damage to the

sharp bends, material, mastnotami, chemicals, the effects of the welding


process, etc. In the case of risk of mechanical damage to the device

protects hard covers.



(11) if any part of the welding equipment is damaged, it cannot be welding

to start or to continue.



(12) for welding device with hydraulic drive using

flammable media space work possible leakage of flammable materials protects

covers as in the presence of flammable substances [paragraph 12 and section 3 (2).

5 (b). (b))].



(13) the welding machines and equipment in the space in which they can

hazardous concentration, can only be performed on machines and

devices which cannot be removed from the area. From space,

machinery and equipment is necessary to remove flammable dusts, to prevent leakage

money into the space, in machinery and equipment, and to measure the concentration of explosive

dusts in the air before and during welding.



(14) the Welding can be performed only on the machines and devices that are

blocked against premature restarts.



(15) the Replacement fresh air inlet oxygen supply is inadmissible.



(16) in areas where there may be flammable gases, vapours or

money, is affixed to gas cylinders for welding and generator

acetylene and electric power to the power supplies svářečským works. When

any abandonment of those areas of the premises they remove burners and

gas supply hose for welding.



(17) with the containers, pipelines and devices which cannot be reliably

to determine whether their content is not fire dangerous, shall

as if the fire threat was.



(18) there is a danger of download of welding wires or hoses, fastening

these fixed structure or to another suitable hard device.



(19) if the welding of more people, lay down in advance the way

mutual communication.



(20) instructs to turn on Welder the welding source or circuit

up to then, when is ready to start working and working position.



§ 6



Welding with the use of flammable gases



(1) when gas welding are used, in particular, oxygen, air,

acetylene, hydrogen, liquefied hydrocarbon gas, which is generally propane,

butane or mixture thereof (hereinafter referred to as "liquefied petroleum gas"), natural gas and artificial

MAPP gas mixture. The highest temperature achieved by the combustion of the selected

gases are listed in annex No. 2 table 2.



(2) for cylinders, gas distribution systems and their accessories

the leaks and closures are finding non-flammable liquids (for example.

water with foaming agents) that do not contain fats and other substances

that could cause a reaction.



(3) when handling the svářečským device must not cause a leak

nezapáleného gas into the workplace in the amount representing the dangerous

concentration.



(4) when the acetylene gas cylinders of sampling inspection is carried out, where appropriate

heating of the cylinder above 50 degrees C for the case of exothermic reaction in the pressure

the bottle must be in writing to provide a procedure for dealing with the pressure of the cylinders,

on the basis of the conditions of the manufacturer or importer.



(5) when the transport operations involving acetylene cylinders at welding workplace can be

the collection of acetylene begin soon after 1 hour. This condition

may not be complied with, provided that the bottles are conveyed in the vertical

position and were not laid before use. Bottle, collection of acetylene shall

be in the position of a vertical or tilted upward at an angle valve at least 30

St. from the horizontal position.



(6) in the case of fire on the svářečském site, on which you are

placed cylinders and other pressure vessels with svářečskými or other

gases or in dangerous proximity to the workplace, these are

immediately removed to a safe place. Preferentially removes full

the pressure of the cylinder and the other full of pressure vessels. For the determination of a specific

the procedure is based on the fire safety requirements laid down

manufacturer or importer. If it is not possible to perform such handling,

reports to the operations unit of fire protection, what the pressure of the cylinder and

pressure vessels and their contents are found in the burning or

the affected area.



(7) when handling the pressure bottles for oxygen and their

Accessories for oxygen must be excluded



and their fats and pollution) substances or materials that contain fats,



(b)) the use of materials not satisfying fire safety conditions

According to the type of welding technology.



(8) the Pressure of the cylinder with the welding workplaces provide against

falling, tipping over or rolling. Security method is chosen so that

easy and secure their release. The pressure in the bottle

welding works placed on a fixed place so as to avoid risks

means of transport means, or moving parts of equipment

or any movement of the material or its own shift.



(9) on the svářečském in space with the risk of fire or

the explosion and subsequent fire could not store gas cylinders intended for

welding work.



(10) the pressure bottle with flammable gas can only be placed where when

possible gas leaks is eliminated dangerous concentrations.



(11) the emptying of cylinders and other pressure vessels cannot be

accelerate the direct heating of bottles of an open flame or other sources of

the heat, which does not allow instructions the manufacturer or importer. In the regulations

the operator shall indicate what form of heating and what surface temperatures are

permitted for the cylinders and pressure vessels.



(12) Přepouštět liquefied petroleum gas and acetylene, dissolved under

pressure is permitted only to authorized organizations. ^ 6)



(13) if the gas Ignites leaking leaks the pressure reducer,

bottled valve, hoses and other fittings, cylinder valve shall immediately

and the flame extinguishes the fire.



(14) in a reverse whiplash and burning flame inside burner immediately

closed valves of flammable gas and oxygen on the burner and the burner is cooled.



(15) if the flame into the hose and pressure reducer shall be closed immediately

cylinder valve on the cylinder with a flammable gas, and then on the bottle with the

with oxygen. The burner can be ignited after elimination of the causes and consequences of the

a reverse whiplash.



(16) the Fire safety distance between the welding pressure bottles

devices using combustible gases and sources of open flame on

the workplace is at least 3 m if the manufacturer or importer for a specific

the device does not provide a different distance as safe.



(17) if the workplace carrying out welding work svářečském with

the use of flammable gases with more svářečskými devices, the

the pressure of the cylinder at a distance of at least 3 m away from each other, or are separated

a non-flammable solid wall which exceeds the height of the kits at least 0.2

m and the width of the trains at least 0.1 m.



(18) For welding work using flammable gases are used

welding hose distinguished for flammable gases and oxygen. The shortest hose,

as well as the part of the hose is at least 5 m long clutch without setting; other

the length is permissible only if so provided by the manufacturer or importer for

the specific device.



(19) the Pressure of the cylinder for welding cannot be placed in the working pit.



(20) terminal units of acetylene on acetylene pipes to

dry or water. The safeguard distance of water master from

the flame is at least 3 m and the protective distance master is dry

at least 1 m.



(21) when welding with acetylene gas generators are considered space with

danger of explosion and subsequent fire.



(22) the Portable acetylene gas generators intended for welding can be used

only



and) in well-ventilated areas with a minimum volume of 100 m3; in the case of

other technical solutions it is necessary to demonstrate that it has been achieved at least

the same level of fire safety,



(b)) designating the location generator safety tables



(c)) the proper protection from unwanted tampering with the device.



(23) to manipulate the open fire to a distance of 3 m from the portable

the generator is not allowed, unless otherwise provided by the manufacturer or importer.



(24) when acetylene gas generators these generators welding

consider a container with the danger of explosion and subsequent fire.



(25) for welding pressure bottle must be in sight of the welder,

where appropriate, other persons involved in the welding process.



(26) when welding is from the pressure of the cylinder liquefied petroleum gas consumption in the gas phase

possible only if the bottle in an upright position Cap up.

Remove the propane-butane in the gaseous or liquid phase of gas cylinders in the other

than vertical position can be only in the case that the documentation allows you to

the manufacturer or importer.



(27) the Pressure of the cylinder after transport to the workplace closed vehicles must

before you start welding. Mobile workshops or mobile

laboratories may remain cylinders for welding

the conditions that



and on the vehicle) more than 2 cylinders from which is taken

gas, and 2 storage cylinders,



(b)) are located at the entrance to the storage space of the vehicle,



(c)) are separately attached device that can be easily unlocked,



(d)) for the collection of gas must not be in the space vehicle carried out no work,




(e)) on the floor in the area of the location of the bottles is a ventilation hole unclosable

the size of at least 0.01 m2 and another one about the size of at least 0.01 m2 is

in the roof of the vehicle or just below it,



(f)) in the Cabinet of the vehicle are not stored the substance or materials that have

prone to spontaneous combustion,



(g)) in the Cabinet of the vehicle are not stored flammable substances or materials

together with a source of ignition,



h) vehicle is equipped with at least one portable fire extinguisher

extinguishing powder weighing at least 5 kg substances placed so that the

available from the outside.



§ 7



Welding electric shock



(1) the clutch electrical wires are placed on non-combustible insulation

the matte.



(2) Replace the electrical wires and welding terminals other than

prescribed or approved by the wires and terminals (e.g. different metal

objects, parts of the structures, chains, ropes) is illegal.



(3) when arc welding in the area with danger of explosion

with the subsequent fire, electric welding resources are placed outside the

such an environment, unless the manufacturer or importer to allow otherwise.



(4) for electric arc welding with electrode holder defers to

to prevent accidental arcing and spray

the hot metal.



(5) Butts will be suspended at the indicated electrodes a safe place (e.g. in

non-combustible container with sand).



(6) the Welded subject is necessary to ensure that, when welding

electric current does not pass through other than the designated paths and other

than the intended subjects. These paths and objects need to be identified so that

to avoid the possibility of fire.



(7) after the welding is a welding device should be disconnected from the source

electric energy.



§ 8



The use of gas soldering lamp



(1) use only undamaged gas soldering lamp (hereinafter referred to as

"soldering lamp"). Before placing the soldering lamp operation checks

its technical condition, in particular, nozzle, sealing joints and tightness

fuel tanks.



(2) for the preheating of the lamp soldering procedures are in place and the petrol

prescribed by the manufacturer or importer. Another pre-heating manner is not

allowed.



(3) when the pre-heating and when operating the soldering lamp deferred to solid and

a safe place. Torch soldering lamp when it is in the free,

a safe space, outside space with the movement of people. When the preheating and

during the operation the soldering lamp leaves without supervision. Between the mouth of the burner

and the nearest fixed obstacle must remain at least 0.5 m free

space, in order to avoid the reflection of the flame of the lamp or the fumes and

overheating of the lamps, if not otherwise specified by the manufacturer.



(4) if the soldering lamp during pressurization or during its operation, leakage of

gasoline, the gasoline supply is closed immediately.



(5) when using soldering lamps to defrost pipes and other bodies are

in advance of their potential isolation and removed to ensure thermal insulation

protection components against exposure to flame.



(6) when soldering lamp this purge is placed on a stable surface,

burner in the direction of the wind, and at such a distance from the fixed obstacles to

It cannot be the reflection of the flame when it is sudden the egress.



(7) before filling with gasoline with a soldering lamp and cool. Her

ignition is carried out again after the evaporation of a solid and venting system

par or vylitého fuel. The soldering lamp is lit with a torch

may not complement the fuel.



(8) after their work it is necessary to shut off the gasoline, soldering lamp

leave to cool and save to the specified location.



§ 9



The use of electric pájedel



(1) before working with electrical GB operation (hereinafter referred to as the "solder")

check the insulation of the supply of electrical wires. Use may only be

only undamaged solder.



(2) when working with solder on heat-insulating pad so that

How to postpone his spontaneous slipping secreted or demolition.

Nevychladlé solder and solder cannot be left in operation without supervision.



(3) after work, you need to disconnect from the electrical solder

energy and save it to a designated safe place.



§ 10



Aluminotermické welding



(1) Aluminotermické welding is done with a completely dry forms of the

dry material. The space below the location of the form and in its closest

the surrounding area is to ensure that when welding and open forms of dry and

protected against moisture.



(2) when transporting or carrying the doses the mixture to the workplace with the matches and

škrtátka transmits in sealed packages separately from each other.



(3) for the fire-safe use of aluminotermického welding must be

in writing to establish specific guidelines, which contain the conditions of the fire

safety.



PART FOUR



WELDING OF NON-METALLIC MATERIALS



§ 11



(1) in the determination of fire-safety measures when welding

non-metallic materials shall, mutatis mutandis, when welding metal

materials, based on the specific properties of the welded

the material and the technology to prevent



and) the possibility of the generation and spread of fire or explosion and subsequent fire

by particles of nonmetallic materials that instead and burns,



b) ignition welded material or other flammable substances (e.g..

determination of the manner and length of heating, by specifying the position of the flame).



(2) when welding, including the surfacing of insulating materials (eg.

polyethylene in combination with živicemi), the burner ignites in the direction of the wind

an open space in which there are inflammable materials,

vapours of flammable liquids or flammable gas.



(3) a burning torch in standby mode is deferred to the available space without

flammable materials in a stable position, with the nozzle pointing to

free space. It is necessary to prevent its slipping, falling, burial,

tearing down the weight of the hose or the accidental opening of the gas, extinguish or

tearing down the flame due to weather conditions.



(4) after the end of work with manual burner burner before saving kits

leave to cool. is placed in a special bracket, located from the

valve cylinders in fire-safe distance specified by the manufacturer

or importer.



(5) after completion of the work of the pressure cylinder, hoses and remove from the burner

workplace and saves on a predetermined place.



PART FIVE



HEATING RESIN



§ 12



(1) Bitumen can be heat only hot melt containers that are

determined by the manufacturer or importer.



(2) Nahřívaná of the bitumen should not be exposed to direct exposure to flame or

another source of ignition.



(3) the Operation of the vessel may fade in the heat of the space heating bitumen only

at that distance, not to lose sight of this place and could

quickly and effectively intervene in case of need.



(4) when the vessel can be heated up A meet with bitumen up to three-quarters of the

content, unless otherwise specified by the manufacturer or importer of the device.



(5) to bring the content of the melt into a liquid state of the container with the contents of the heats

gradually. When heating operation shall ensure that the contents of the rozehřívaný nepřekypěl.



(6) pressure cylinders used as part of the equipment for heating bitumen

are stored at a safe distance from the heat source and

hot container with nahřívanou with bitumen. A safe distance from the open

the fire is at least 4 m shorter distance is possible if and only if so provided by

the manufacturer or importer.



(7) within a distance of 4 m is not allowed to store flammable substances, unless the

otherwise provided the manufacturer or importer. Flammable substances are stored,

in order to avoid their movement toward a possible ignition sources.



(8) Place the container on a flammable surface is not allowed, if it is not

otherwise provided the manufacturer or importer.



(9) if they are used solid fuel as a heat source, it must be after the end of

heating before leaving the workplace safely doused the fire and ash save

so, to avoid a fire or spread of fire (e.g. in the

non-flammable containers). In the area around and underneath containers is not allowed to store

flammable material and ash secures against unintentional last breath for.



(10) in the vicinity of the fusion of the container shall be placed at least two portable fire extinguishers

apparatus with a mass of extinguishing powder substance for at least one device

5 kg, or other means to extinguish the fire.



PART SIX



TRANSITIONAL AND FINAL PROVISIONS



section 13 of the



(1) the special rules governing certain conditions of fire safety

welding, this Decree affected. ^ 7)



(2) the specific fire safety measures in accordance with § 3 (1). 2 do not need to

demonstrate in writing in the event that welding is performed by a natural person

and welding is not part of the business.



(3) on the welding work performed on pipelines and gas appliances

under the pressure of the gas, and the gas cannot be due to technological reasons

delete, the fire safety conditions in accordance with this Decree, subject to

only in cases where the workplace in addition to gas svářečském

under the pressure of other flammable substances and require special welding work

fire precautions [section 2 (b), (f))]. Must exclude

the emergence of dangerous concentrations of [section 2 (a))] and ensure that the conditions of the fire


Custom welding safety device.



§ 14



The effectiveness of the



This Decree shall enter into force on 1 January 2000. July 2000.



Minister:



PhDr. Grulich in r.



Č. 1



The range of special fire-safety measures



and precise indication of the place) where the welding is performed,



(b) the precise determination of task work),



(c) the) determination of the technology that will be used,



(d) determine the Welders) rated indicating proof of professional competence,



e) start date and time,



(f)) end date and time,



g) detailed specification of the required fire-safety measures,

review their performance, the mode of proof of performance measures, including

measuring the concentration of flammable substance, demonstrating their compliance with, putting

the names of the persons responsible and the names of the people for their implementation,



(h) determine the forms of fire supervision), the number of persons, the definition of responsibilities,

How to get started with providing the names of persons appointed to carry

the fire supervision during welding, the work is interrupted, even after

the end of the welding and its proof,



I) confirmation of the fact that the parties were before the start of welding

familiar with fire safety measures, and persons carrying out

fire with defined responsibilities; the document contains the names of people and

their signatures confirming the understanding,



j) determine the type and number of hasebních resources,



for other fire extinguishing) putting in place (such as the existence of a stable

fire-fighting equipment, fire-fighting technology devices, the presence of

unit of fire protection with the appropriate technical equipment),



l) name of the person that reports the end of welding,



m) place and conditions for storing welding kits for interruption

welding and welding workplace,



n) name, title, signature of the person who issued the statement, and the date when the

issued,



about) a person that has been saved any activity, confirm compliance with the Act

signature and usher in the time and date; the transmission or reporting activities

(e.g. fire, the announcement of the end of the welding) confirms that the signature

the transferring and accepting person reporting and, where applicable, a person who is

activity is reported. Records shall indicate the time and date.



Č. 2



Temperatures are some of the possible sources of ignition in welding and

the highest temperature achieved by the combustion gases are selected

Table 1



Temperatures are some of the possible sources of ignition when welding

(C)



Electric arc welding of approximately 5 000

The temperature of the molten particles-electric welding over 3 000

The flame of the burning gases in an oxygen-2 600 3 200

Aluminotermické welding of 2 200

The flame of the burning gases in the air 1 800-2 350

Flame gas soldering lamp approx. 1 600

Table 2



The highest temperature achieved by the combustion gases are selected (° C)



The temperature in the combustion of oxygen during the combustion Temperature in the air

Hydrogen 2 660 2 045

Methane (natural gas) 2 737 1 875

Propane 2 776 1 925

n-butane-1 895

Acetylene 3 137 2 325



1) § 2 (2). 1 of the law No. 133/1985 Coll., on fire protection, as amended by law

No 203/1994 Sb.



2) § 17 para. 1 and 2 of Act No. 133/1985 Coll.



3 for example, § 6a) (a). (g) Act No. 133/1985) Sb.



4) Act 50/1976 Coll., on zoning and the building code (the building

Act), as amended by Act No. 103/1990 Coll., Act No. 425/1990 Coll., Act

No. 262/1992 Coll., Act No. 43/1994 Coll., Act No. 19/1997 Coll. and act

No. 83/1998 Coll. (full text published under no. 197/1998 Coll.).



section 18 of Decree No. 132/1998 Coll., which implements certain provisions of

the building Act.



5) for example, section 1 of the Decree No. 21/1996 Coll., implementing some

provisions of the Act of the Czech National Council on fire protection.



6) Decree No. 21/1979 Coll., which specify a dedicated gas equipment

and lays down certain conditions to ensure their safety, as amended by

Decree No. 554/1990 Coll.



7) for example, Decree No. 22/1989 Coll. on occupational safety and health

at work and the safety of operations in mining activities and mining

reserved minerals underground, as amended by Decree No. 477/1991 Coll.

Decree No. 340/1992 Coll., Decree No. 3/1994 Coll., Decree No. 54/1996

Coll. and Decree No. 109/1998 Coll.