(December 28, 2007, the State environmental protection administration, the 45th release as of January 1, 2008) contents chapter I General provisions chapter II Organization and function third exam contents and methods of the fourth chapter test result evaluation, certification and Management chapter fifth sixth seventh chapter Chapter legal liability of supervision and inspection annex chapter I General provisions article in order to strengthen the civil nuclear safety equipment, welders, welding     Operator qualification management, civil nuclear safety equipment to ensure the welding quality, in accordance with the Ordinance on civil nuclear safety equipment supervision and management, these provisions are formulated.     Provisions of this article applicable to civil nuclear safety equipment Welders and welding operators qualified to manage.     Article engaged in civil nuclear safety equipment welding Welders and welding operators according to this after participating in the examination and obtain the certificate, may engage in civil nuclear safety equipment for welding activities.     Second chapter institutions and duties fourth article State nuclear security regulatory sector is responsible for approved issued civilian nuclear security equipment welder, and welding operation workers qualification certificate, its main duties is: (a) selected civilian nuclear security equipment welder, and welding operation workers Assessment Center (following referred to "Assessment Center"); (ii) organization developed welder, and welding operation workers exam outline, and basic theory knowledge exam test, and organization welder, and welding operation workers basic theory knowledge exam; (three) supervision check Assessment Center of assessment and management work;     (D) review the assessment Center test plans and test results, and awarded to qualified Welders and welding operators certification; (e) archiving and preservation of welders, welding operators and related information.     Nuclear safety regulatory authorities under the State Council can establish civil nuclear safety equipment as needed Welders and welding operators qualified appraisal Committee, and performs related duties. Fifth article State nuclear security regulatory sector on meet following conditions of units, can selected for assessment Center: (a) established has sound of welder, and welding operation workers assessment quality guarantee system, has perfect of assessment and management system, and exam rules, and meet exam requirements of welding process procedures and special theory knowledge exam test,; (ii) has 5 years above of nuclear level welder, and welding operation workers assessment performance, and assessment welder, and welding operation workers not less than 300 passengers; (three) has and intends engaged in of welder, and     Welding operation workers assessment activities phase adapted of site, including skills operation exam site (at least 20 a station), and theory exam classroom, and steel library or try pieces library, and welding material library, and test site, and archives or information library,; (four) has and intends engaged in of welder, and welding operation workers assessment activities phase adapted of equipment, including welding equipment, and electrode and flux drying equipment, and try pieces and sample making equipment, and physico-chemical test and lossless test equipment, and hot processing equipment and the measurement tool,;     (E) staff includes at least: the engineer more than full-time welding technician 3, full-time nuclear II above the surface and volume of non-destructive testing personnel 1; (vi) ability to organize Welders and welding operators test management Welders and welding operators and welding the ability to archive. Sixth article Assessment Center is responsible for organization implementation welder, and welding operation workers special theory knowledge and operation skills exam, its main duties is: (a) developed exam plans; (ii) review candidates registered for the welder, and welding operation workers of qualification; (three) determine special theory knowledge exam content and operation skills exam project; (four) preparation and test exam try pieces, and evaluation exam results; (five) issued welder, and welding operation workers stamp; (six) prepared or confirmed welder, and welding operation workers exam with welding process procedures; (seven) established     Welders and welding operators and management archives. Seventh to engage in civil nuclear safety equipment welding Welders and welding operators, shall apply to the examination centre for test.     Application test of welders and welding operators shall meet the following conditions: (a) have a middle school or junior high school education, (ii) health, (iii) have the ability to operate in accordance with welding procedure specification and (iv) have the ability to independently perform welding work.     Chapter III examination article content and method of the eighth Welders and welding operators to test theoretical knowledge examination and skills exams.     Nineth Welders and welding operators theory exam includes basic theoretical knowledge examination and specific theoretical knowledge exams.     Be engaged in basic theory knowledge does not include special welding method and activities of parent material types of welding Welders and welding operators, before taking the skills test, also should be addressed through specific theoretical knowledge exams.     Welders and welding operators passing basic theory test valid for 3 years. Tenth Article welder, and welding operation workers basic theory knowledge exam should including following content: (a) nuclear power system basic knowledge (including radiation protection aspects of knowledge) and nuclear power quality guarantee basic knowledge; (ii) civilian nuclear security equipment knowledge, including equipment category and nuclear security level, about manufacturing standard and welding procedures, welding joint classification principles and requirements, common mother material and welding material, and welding method of features and main manufacturing technology requirements (including heat treatment and lossless test basic knowledge); (three) welding equipment, and     Use and maintenance of devices and measuring instruments; (d) the forms, properties and affecting factors of welded joints, welding symbols and pattern recognition; (e) the causes and prevention measures of weld defects; (vi) the causes and prevention measures of welding stress and deformation, (VII) welding safety technology.     11th Welders and welding operators specific theoretical knowledge examination content should be based on special welding method and material characteristics.     12th cockpits should be according to the welding method and specimen forms and base metal category, weld, welding, welding material, specimen size, welded elements (pad, single face welding and double welded), determine the Welders and welding operators skill test project.     13th Welders and welding operators skill test number of specimens should be eligible, does not allow welding samples to choose from.     Specimen preparation and welding shall meet the following requirements: (a) Groove of the test specimen surface and within the Groove on each side of the 25mm should be cleaned to remove iron and rust, oxide, oil, dirt and other debris.     (B) the electrode and flux shall require drying, hand-to-mouth, and wire should be removing oil, rust.     (C) the Welders and welding operators shall be in accordance with the qualified welding procedure specification for welded test specimens.     (D) the skills test, should be members of the cockpits, the invigilator and welder or welding operator presence confirmed the common case, in specimens number marked on the welder or welding operator exam.     (Five) level fixed try pieces and 45 ° fixed try pieces Shang should mark welding location of hours mark, positioning weld shall not in "6 points" mark at; pipe down welding try pieces should according to hours mark fixed try pieces location, and only from "12 points" mark at up arc, "6 points" mark at received arc; up welding Shi should from "6 points" location up arc.     (F) all examinations of welders, there should be at least one stop in the first layer weld arc welding head; welding operator during the test, each bead must not stop in the Middle an arc.     (VII) mechanized welding test that allows the arc Board and lead Board.     (H) the specimen began after soldering, welding position may not be changed; for pipe butt joint and the 45 ° fixed tube sheet weld specimen tube axis and the angle between the horizontal plane shall be within the range 45 ° ± 5 °.     (I) the last layer on specimen surface grinding and repair is not allowed.     (J) the Groove form and size of the specimen shall be prepared in accordance with welding procedure specification, or the cockpit preparation in accordance with the relevant national standards and industry standards.     Fourth chapter test result evaluation, certification and management article 14th Welders and welding operators basic theory knowledge and specific theoretical knowledge examination mark scored 60 passing mark. 15th Welders and welding operators skill test by testing of specimens for evaluation.     After inspection, the test specimens, the exam to qualify.     16th article two name above welder, and welding operation workers participate in combination exam Shi, if which a exam project not qualified, and can determine led to the exam project not qualified of Shi welding welder or welding operation workers of, is should finds the welder or welding operation workers of exam project not qualified; cannot determine led to the exam project not qualified of Shi welding welder or welding operation workers of, is should finds participation the combination exam of welder and welding operation workers are not qualified. 17th Welders and welding operators failed to pass the skills test, allowing make-up once in a month.     Make-up are not eligible to reapply for the exam, but the previous exam time interval shall not be less than three months.     18th examination centres should be Welders and welding operators examinations results recorded in the assessment report of examination, operation skill examinations results recorded in the examination of inspection records.     Examination centre shall, within 10 working days after the test results, qualified Welders and welding operators test evaluation report, signed by the Director of the Center and seal the submitted to the State Council for nuclear safety regulatory authorities.     19th civil nuclear safety equipment Welders and welding operators perform only qualified welding activities within the project.     20th cockpit Welders and welding operators should establish and management Archives Archives including Welders and welding operators should be continuous operation records.     Welders and welding operators employing unit shall fill in the Welders and welding operators continuously records and examination centre for the record every six months.     21st nuclear safety regulatory authorities under the State Council shall, from the date of receipt of the assessment report of the examination within 20 business days, complete the review of welders and welding operators to test results, and make a decision on whether to qualify.     Nuclear safety regulatory authorities under the State Council shall, within 10 working days from the date of the decision, awarded to qualified Welders and welding operators qualified certificates.    22nd Welders and welding operation certificate shall include the following main elements: (A) the name and employer of welders and welding operators; (b) the examination project; (c) expiry date; (d) the certificate number.     23rd civil nuclear safety equipment of welders, welding operators shall simultaneously practising in two or more units. Welders and welding operators to change employer, which shall be presented to the examination centre of the employing organization certificate request, and shall provide the original views of the employing organization, nuclear safety regulatory authorities after examination and approval by the State Council to replace the new certificate.     Updated certificate validity period for the certificate's validity period.     24th Welders and welding operators qualified certificate valid for a period of 3 years.     Certificate has expired, the examination item number for the duration of the welding work quality, need to continue welding Welders and welding operators shall, within 60 working days before the expiry, extended application to cockpits.     Examination centre shall, within 10 working days from the date of receipt of the renewal application, preliminary review of completed renewal application, proposed whether to approve the extension proposal, and will continue to apply and welders and welding operators to continuously review records submitted to the State Council for nuclear safety regulators. Nuclear safety regulatory authorities under the State Council shall be in Welders and welding operators before the expiry date of the certificate, make a decision on whether to approve the extension.     Approve the extension, may be extended once, extended for a period of 12 months, extension of welders and welding operators qualified project expiry date.     Not eligible for extension or extend the expiration of welders and welding operators need to continue welding work, you can reapply.     25th continuous interruption of welding work for more than three months, welders and welding operators holding certificates expire automatically.     Discontinue the examination items of welding work continuously for more than six months, welders and welding operators holding certificates qualifying record for the corresponding exam items in automatic failure. Assessment report of the 26th test and welder, welding operator qualification skills exam eligible projects should be used in identification.     Sequence of those codes for classification of welding methods, sample form code, the welds form code, category number of parent metal, welding material, specimen size welding, welding position code, element classification number.     Article 27th foreign Welders and welding operators qualified overseas units, nuclear safety regulatory authorities approved by the State Council, People's Republic of China territory to engage in civil nuclear safety equipment for welding activities.     28th civil nuclear safety equipment Welders and welding operators had been rigged, cancel their examination by the assessment centre, and disable the test 1.     Fifth chapter 29th Assessment Center of supervision and inspection should be carried out in the Welders and welding operators 10 working days before the examination, examination plan, content and location notice nuclear safety regulatory authorities under the State Council.     30th State nuclear safety regulatory examination centre of welders and welding operators to supervise and inspect the work of assessment and management.     Supervision and inspection is divided into comprehensive inspections and special inspections: (a) the integrated examination includes examination centres, personnel of the quality assurance system faculty, assessment management system and rules, assessment activities of the relevant documents and records, examination plan and implementation of.     (B) special inspection is the examination centre for welders and welding operators examination activity check.     31st cockpits shall cooperate with the State nuclear safety regulatory supervision and check objectively reflect the situation, provide the necessary material, shall not be refused and obstructed.     Sixth chapter legal responsibility 32nd article Assessment Center has following case one of, by State nuclear security regulatory sector ordered deadline rectification; plot serious of, stop its qualification assessment work: (a) Assessment Center conditions changes, not meet provides requirements of; (ii) not according to this provides for welder, and welding operation workers exam of; (three) refused to or hamper State nuclear security regulatory sector supervision check of; (four) work management chaos, exam work quality poor of; (five) serious violations, fraud of.     33rd article engaged in welder, and welding operation workers qualification assessment of staff, has following behavior one of, by Assessment Center stop its qualification assessment work, and according to about legal regulations be punishment: (a) leaked exam content of; (ii) exam process in the has engages in behavior of; (three) negligence, led to examination room discipline chaos, exam results false of; (four) has other serious effect Qualification exam just sex behavior of.     34th civil nuclear safety equipment manufacturing, installation, unit or civilian nuclear facilities business unit to provide false testimony shall be formulated by the nuclear safety regulator fines of between 10,000 yuan and 30,000 yuan.     35th civil nuclear safety equipment Welders and welding operators engaged in welding activities beyond the scope of examination item, the nuclear safety regulatory authorities under the State Council shall order it to stop civil nuclear safety equipment for welding activities, relied on civil nuclear safety equipment supervision and management regulations of the 49th article of the employing organization will be punished.     36th forged or altered civil nuclear safety equipment Welders and welding operators qualified certificates, according to the People's Republic of China Law on administrative penalties for public security provisions of the 52nd, 15th 10th above detention, may be fined a maximum of 1000; minor, 5th above 10th following detention, may be fined a maximum of 500 Yuan.     37th civil nuclear safety equipment-welders, welding operators violated operating rules, leading to serious quality problems, the nuclear safety regulatory authorities under the State Council shall revoke the certificate.     The seventh chapter by-laws except as provided in the 38th article of the welding methods, material types of welders and welding operators test, its content, methods and evaluation standards by enterprises and examination centres in accordance with the relevant conditions of product design and manufacturing technology development, and nuclear safety oversight by the State Department. 39th article of the regulations come into force on January 1, 2008.     On June 6, 1995, issued by the State Office for nuclear safety to the civilian nuclear pressure equipment Welders and welding operators training, examination and evidence regulations (HAF603) repealed simultaneously.       Schedule 1 civilian nuclear security equipment welder welding operation workers exam plans Schedule 2 civilian nuclear security equipment welder welding operation workers exam evaluation report schedule 3 civilian nuclear security equipment welder welding operation workers operation skills exam test records schedule 4 civilian nuclear security equipment welder welding operation workers qualification card style schedule 5 civilian nuclear security equipment welder welding operation workers continuous operation records annex 1 operation skills exam requirements annex 2 exam try pieces of test requirements annex 3 special situation of for example Appendix 1: welder welding operator examination program of civil nuclear safety equipment Note: test category is divided into initial and the card.     Refers to the first interview take the exam for the first time; complex syndrome refers to the examination items expire and then test again. Schedule 2: civilian nuclear security equipment welder welding operation workers exam evaluation report schedule 3: civilian nuclear security equipment welder welding operation workers operation skills exam test records schedule 4: civilian nuclear security equipment welder welding operation workers qualification card style schedule 5: civilian nuclear security equipment welder welding operation workers continuous operation records annex 1: operation skills exam requirements 1.1 welding method 1.1.1 civilian nuclear security equipment manufacturing, and installation and maintenance in the common of welding method of classification and generation     See table 1 and table 1 in various welding methods cannot replace each other. 1.1.2 operation skill examinations can be performed by a welder or welding operator in the same specimen using a welding method, or by a welder, welding operator in the same specimen using combinations of different welding methods exam or by two or more Welders and welding operators in the same specimen using the same or different welding methods combined testing. Three more welders, welding operators of both test specimen thickness shall not be less than 20mm.     Welders and welding operators weld the whole effective weld length not less than 150mm.     Note: for welding method does not belong to table 1, examination centre of new welding method of classification number should be submitted to the State Council for nuclear safety regulatory authorities. 1.1.3 combined welding method code is available for each method of welding codes side by side.     For example, end of manual argon tungsten arc welding, the other arc welding electrode layer combination methods are represented as "HWS/HD". 1.2 1.2.1 base metal base metal category classification and code are shown in table 2.     Table 2 classification applies to rolling, forging and casting, and other materials.     1.2.2 Welders and welding operators skill test shall comply with the following requirements: (1) welder using similar material in any steel after passing the examination, the examination of other material can be removed from the class.     (2) welders used ⅰ ~ ⅳ-like material in the category high after passing the examination, can be removed from the category of lower material examination.     (3) the welder uses VI ~ IX examination of such materials cannot be replaced by other types of materials to each other.     (4) for different species material of welding, welder if used mother material in the of two class material are including in table 2 in the subsection ⅰ-IV category within, and on both in the high category of material has exam qualified, is can from test; if used two class material in the has subsection VI class, and has on two class mother material respectively exam qualified, is can from test, but welding material used nickel base alloy material Shi, still must exam.     (5) using any one of a class of steel welding, welding operations after passing the skills test applicable to other categories of steel.     1.2.3 dissimilar materials in the exam said methods used in the project code "X/Y", x, y represent the category number of the base metal.     1.2.4 when the base metal for materials other than table 2 categories, cockpit according to material weldability tests or results classify the base metal of welding procedure qualification and classification opinions submitted to the State Council for nuclear safety regulatory authorities.     1.3 the specimen forms 1.3.1 operation and test specimen is divided into panels, tubes and tube-sheet (takeover) three forms, its code is p, t, P-T, respectively. 1.3.2 Welders and welding operators examinations must be carried out on plates or tubes, outer diameter d is greater than the 25mm pipe welder welding seam of the weld test results are applicable to the plate. 1.3.3 welder welding plate specimen test results applied to pipes of outside diameter greater than or equal to 500mm.     Flat welding (PA), fillet welding in the horizontal position (PB) or horizontal position welding (PC) sheet specimens after passing the examination, for tube pipes of outside diameter greater than or equal to 150mm.     1.3.4 welder welding on a plate to take over took over on the test results cannot be applied to pipes, pipe on the taking over of test results can be applied to the plate to take over.     1.4 1.4.1 operating skill test specimens in the form of the weld seam is divided into Groove weld (including butt welds and took over weld), fillet welds, welding three kind, codenamed GW, FW, d, respectively. 1.4.2-Groove weld specimen with cushioning and without liners in two ways.     Double-sided, partial penetration Groove weld is considered to be padded.     1.4.3 exam results can be applied to any of the butt weld joints butt weld, except 1.4.5 shall take over the weld. 1.4.4 product mostly on fillet weld, welders and welding operators should carry out the appropriate examinations of the fillet weld.     Products most of butt weld, butt weld examination results can apply to fillet welds. 1.4.5 product of a receiver to take over the weld or involve complex welding, welders should take over the welding test.     Welder skill examination, subject to the following conditions, should be attached to take over typical sample: (1) fully welded over weld, head outer diameter D2 D1 and branch pipe outer diameter ratio is less than 5.     (2) take over welded tube angles less than 75 ° (head of axis or support plate and pipe axes of the angle).     1.4.6 head diameter and diameter ratio assessment the scope of the greater than or equal to the ratio of the diameter of the test specimen.     Point 1.4.7 branch assessment of the scope for greater than or equal to the angle alpha test specimen tubes.     1.5 1.5.1 welding position position classifications and code as shown in Figure 1, 2, 3.     1.5.2 position scope see table 3.     1.5.3 pipe samples H-L045 and J-L045 all welding welding positions endorsed by the workpiece position. 1.5.4 using stud welding welding specimens, the overhead position after passing the examination, apply to any position of stud welding specimens elsewhere after passing the examination, only the corresponding position of the welding piece.     Stud welding test piece position as shown in Figure 4.     (Editor Note: Figure 1 graphics see manuscript) Figure 1 welding location with code said figure (Editor Note: a,) graphics see manuscript) a,) docking weld (Editor Note: b) graphics see manuscript) b) angle weld figure 2: Board-like welding location (Editor Note: a,) graphics see manuscript) a,) docking weld (Editor Note: b) graphics see manuscript) b) angle weld Figure 3 pipe of welding location (Editor Note: a, graphics see manuscript) A stud welds – test position (Editor's Note: b graphics see manuscript) b stud welding welding position Figure 4 – test-stud welding welding positions 1.6 weld metal thickness and tube diameter 1.6.1 welder skills using Groove weld specimen after passing the examination, scope of weld metal thickness of the sample are shown in table 4.     T for each welder a welding method is used on the specimen the Groove weld metal thickness (stick count) when a welder a welding method examination and cross section of the specimen when fully welded, t and t equal to the base metal thickness of the specimen. Welding operators using Groove weld or a fillet weld specimen during the test, base metal thickness t custom, welding operations after passing the skills test, suitable for welding of weld metal thickness t is not limited.     Note: (1) welding: t~1.5T.     (2) gas: 3~1.5T.     (3) thicker than 50mm, the cockpit has the right to choose, or actual thickness or on plates in the thickness T>20mm with damper devices, but baffle device h opening and depth should simulate actual product (see Figure 5).     (4) test with a bezel, for the implementation of the bead on the surface, remove the bezel.     (Editor's Note: see Figure 5 graphics original) Figure 5 thick plate welded specimen 1.6.2 welder skills using Groove weld specimen after passing the examination, the scope of the outer diameter of the pipe as shown in table 5.     Note: pipe welding of vertical down welding specimens using pipe Groove weld or a fillet weld test, outside pass, after passing the skills test, apply pipe Groove weld fillet weld specimen tube outer diameter and the minimum value for the outer diameter of the test piece, maximum is not limited.     1.6.3 take over weld, in table 4 pipe weld metal thickness and outer diameter of the pipe in the table 5 refers to: (1) seat: pipe weld metal thickness and outside diameter and (2) insert: lead or weld metal thickness and tube diameter of the shell.     1.6.4 welding of fillet weld thickness of specimen material scope of application are shown in table 6.     1.6.5 surfacing thickness of material scope of application are shown in table 7. 1.7 1.7.1 welding material welding material classification of his mother group, as shown in table 2.     Such as filling materials and base metal with constituencies that do not need to indicate separately in the project code, such as filling material with different constituencies, be made after the test project number base code code in brackets indicate the welding material. 1.7.2 the electrode according to the characteristics of the coating is shown in table 8.     Imported electrodes may refer to these provisions.     1.7.3 type of flux-cored wire products: using filler wire-free, solid wire codes 01 and 02 respectively (cored code through welding code reflected).     1.7.4 after passing the examination with filler metal, welding without filler metal may test and otherwise, to take the exam again.     1.7.5 solid wires and flux cored wire equivalent to each other.     1.7.6 melt sealing ring: when the melt sealing ring is used, melted sealing ring shape and cross section changes to the exam again. 1.7.7 corrosion resistance of austenitic stainless steel welding material is used when welding, welding metal category, used "a". Nickel and nickel alloy welding material welding and surfacing metal category, with "Ni".     Wear resistant surfacing with "h".     Note: (x) for the test electrodes, x to replace electrode pad base-free coating type used weld and the actual production of the same. 1.8 the specimen size 1.8.1 plate butt welds and fillet dimensions of test specimens respectively, as shown in Figure 6, 7.     For mechanized welding, Figure 6 plates in length should be greater than or equal to 400mm. (Editor's Note: see Figure 6 graphics original) t is the thickness of plate Figure 6 plate weld specimen size (mm) (Editor's Note: Figure 7 graph see manuscript) t is the thickness of plate Figure 7 plate fillet welds specimen size (mm) 1.8.2 pipe butt weld dimensions of the test specimens is shown in Figure 8.     Tube-plate dimensions of the test specimens is shown in Figure 9. (Editor Note: Figure 8 graphics see manuscript) d for tube od t for tube wall thick Figure 8 pipe docking weld try pieces size (mm) (Editor Note: Figure 9 graphics see manuscript) L1 for try Board length d for tube od t for tube wall thick Figure 9 tube Board try pieces size (mm) 1.8.3 heap welding try pieces try Board size not is less than wide 150mmx long 150mm, heap welding layer size not is less than wide 38mmx long 150mm.     As in pipe welding, minimum pipe length should be 150mm, the minimum diameter should be able to meet sample size requirements, and should be continuous surfacing around the circumference.     On the corrosion resistance of surfacing welding operators skill test, when weld cladding width is greater than 13mm, the first floor surfacing should consist of at least three bead.     1.8.4 stud welding specimens: in Figure 4 (a) l (8-10) D,B greater than or equal to 50mm. 1.9 welding factor table 9 for some elements and code.     Tables 10 and 11 for the scope of application of welded elements.     Welding operators skill test, multi-layer welding within the Groove on each side after passing the examination, can be applied to single-layer welding and vice versa does not apply.     Tungsten inert gas welding regulator-free system automatically after passing the examination may apply to voltage regulation system, but does not apply; no automatic tracking system for mechanized welding can be used with an automatic tracking system, but does not apply.     When using welding technique to weld, welding into left and right welding or vice versa requires new exam. 1.10 the project code name for example annex 2: test inspection inspection requirements 2.1 the specimen of the sample project, checks and sample number Welders and welding operators skill test specimens test project, the number of checks and the number of samples are shown in table 1.     Each specimen should be conducted before the inspection, after passing the test for other projects.     Note: (1) appearance in the table number number of test specimens test specimens.     (2) when the thickness of the specimen when =10MM, 2 side-bending specimen can be used instead of face-bending and back-bending specimen.     (3) for PF, PG, H-L045 and J-L045 welding position, two face-bending and back bending test should be done, when the specimen thickness greater than or equal to 10MM, the 4 side-bending specimen can be used instead of face-bending and back-bending specimen.     (4) when the non-destructive testing cannot be done when internal defects testing, metallographic examination must be done along weld at 4 x 90 ° cross section take on metallographic specimen.     (5) any specimens taken 4 check.     (6) inspection and metallographic examination of fracture choice of one.     (7) other inspection requirements according to annex 3. 2.2 Visual inspection of specimens 2.2.1 inspection of specimens using Visual or 5 times magnification.     Manual welding defects of plate specimen of 20mm at both ends, and weld stick weld inspection available and width measurement maximum and minimum values, but do not take an average, one-side welding with back weld width is not measured.     2.2.2 sample Visual inspection of welds shall comply with the following requirements: 2.2.2.1 the weld surface should be the original state after welding, machining grinding or repairing is not allowed.     2.2.2.2 weld dimensions shall conform to the requirements of table 2, the following requirements: (1) welding edge straightness: MMA welding 2mm; mechanized welding ≤ 3mm.     (2) sheet metal, tube sheets or take over the fillet weld convexity or concavity should be less than 1.5mm; sheet metal, tube plate fillet weld sizes or taking over k is T+ (0~3) mm (t-plate or pipe wall thickness).    (3) the plate specimen with no liner, tube plate or take over the specimen and outside diameter of not less than 76mm pipe weld reinforcement should be not more than 3mm welding seam on the back of the sample. (4) the outer diameter of the pipe butt weld specimen less than 76mm ball check.     Pipe outside diameter greater than or equal to 32mm, the ball diameter pipe inner 85%; outer diameter is less than 32mm, ball diameter inner diameter 75%. 2.2.2.3 surfacing between adjacent weld raised not more than 1.5mm welding bead height difference must be less than or equal to 1.5mm.     Weld lap joint between the plane within the specimen shall not be greater than 1.5mm. 2.2.2.4 weld surface without cracks, incomplete fusion, slag inclusions, voids, welding, and lack of penetration. Mechanized welding of weld surface should undercut and potholes.     Manual welding weld undercuts and back pit shall not exceed those stipulated in table 3. 2.2.2.5 plate welding deformation of the specimen angle θ ≤ 3. As shown in Figure 1 (a).     Specimens shall not be greater than the amount of the wrong side of 10%T and =2mm, as shown in Figure 1 (b).     2.2.3 Visual inspection of all specimens belonging to a test project results meet the requirements 2.2.2, Visual inspection of the specimen for qualified or unqualified.     (Editor's Note: (a) graphic see manuscript) (Editor's Note: (b) graphics see manuscript) (a) specimen deformation angle (b) specimen unfitness figure 1 plate specimen deformation angle and unfitness 2.3 non-destructive testing non-destructive testing of specimens should be in line with civil nuclear safety equipment of weld inspection requirements at the product level. 2.4 2.4.1 bending specimen for bending test should be non-destructive testing defect found in most areas harvested. Plate specimens according to figure 2 location of interception of bend specimens; tubular specimens according to figure 3 position intercept bending, bend the form and size of the sample shown in Figure 4. Surfacing at least surfacing in lateral bending specimen width full, Fusion line and primary heat-affected zone.     Stick and back seam on the specimen plate application of mechanical removal, face-bending and back bending and stretching of the specimen surface should be flat and remain on at least one side of the base metal in the weld on both sides of the original surface. 2.4.2, backs bent or side-bending test, elongation a ≥ 20% for base metal, elbow (or the roller) diameter should be 4T, bend angle should be 180 °.     Elongation of A2 n=N