1、RCC-M-Edition 2007 SECTION I：SUBSECTION B CLASS 1 COMPONENTS_CLASS 1 COMPONENTSSECTION I : SUBSECTION B DESIGN AND CONSTRUCTION RULESFOR MECHANICAL COMPONENTS OF PWRNUCLEAR ISLANDSRCC-MRCC-M - Edition 2007 Subsection B B 1000 GENERAL B 1100 INTRODUCTION Subsection B of the RCC-M covers class 1 press
2、ure-retaining components and their parts as defined in chapter A 4000. Subchapter B 1200 specifies the documents to be prepared for the components and their parts. Subchapter B 1300 specifies identification procedures for component parts and welded joints. Chapter B 2000 sets rules for selection of
3、materials used in component parts. Chapter B 3000 sets rules for design of equipment. Chapter B 4000 sets rules for manufacturing of components and their parts and for examinations performed both prior to and following manufacture. Chapter B 5000 sets rules for pressure tests. When annex ZS is expli
4、citly required by the contract, it supplements the requirements of this subsection whenever necessary. B 1200 REQUIRED DOCUMENTS Chapter A 3000 defines these documents and describes their content. Documents required under this subsection shall be kept at the disposal of Surveillance Agents. The cont
5、ract shall specify which documents are to be handed over to the relevant parties. B 1210 EQUIPMENT DOCUMENTS The following documents shall be prepared for components falling within the scope of subsection B. Where production conditions so permit, an entire lot of components may be covered by the sam
6、e documents. n 113-2007 B 1000 / 1 RCC-M - Edition 2007 Subsection B B 1211 DOCUMENTS ATTACHED TO THE PURCHASE ORDER - Equipment specification (technical purchase order addenda) - A 3100. B 1212 PRELIMINARY DESIGN AND MANUFACTURING DOCUMENTS - Comprehensive layout and referencing documents - A 3201.
7、 - Sizing report - A 3203. - Component parts list - A 3202. - Description of fabrication shops - A 3204. - Quality plan (initial phase) - A 3801. B 1213 DOCUMENTS PREPARED AND UPDATED DURING FABRICATION - Comprehensive layout and referencing documents - A 3201. - Component parts list - A 3202. - Str
8、ess report - A 3203. - Welding data package - A 3501. A welding data package shall be prepared for a given pressure-retaining component and shall be updated to account for innovations in welding methods. - Hydrostatic test reports - A 3603 (which refers to B 5000). - Non-conformance report and devia
9、tion report - A 3700. - Quality plan (follow-up document) - A 3801. - Pressure tests specification. - Test certificate. - Test report. B 1214 POST-MANUFACTURING DOCUMENTS - End-of-manufacturing certificate - A 3804. - End-of-manufacturing report - A 3805. B 1000 / 2 n 113-2007 RCC-M - Edition 2007 S
10、ubsection B B 1220 DOCUMENTS FOR COMPONENT PARTS B 1221 PROCUREMENT DOCUMENTS - Technical part and product manufacturing programmes - A 3301. SECTION II of this Code (procurement specifications and subchapter M 300) specifies the parts and products for which such programmes must be drawn up. - Part
11、and product sub-purchase orders (technical and administrative clauses) - A 3302 (which refers to SECTION II, paragraph M 111). - Procurement specification - Paragraph M 113 of SECTION II states the conditions under which special procurement specifications must be drawn up. - Part type record (for ca
12、stings) A 3303-1 (which refers to M 160). - Characterisation report for prototype series of heat exchanger tubes - A 3303-2 (which refers to M 170). - Filler materials acceptance specification - A 3502 (which refers to S 2120). - Filler materials acceptance report - A 3503 (which refers to S 2550).
13、- Component part quality plan - A 3801. The Supplier shall draw up quality plans for the following component parts only: - reactor vessel: flanges (2113), shells (M 2111 and M 2112), heads (M 2122 and M 2131), nozzles (M 2114) and transition ring (M 2113), - steam generators: channel heads (M 1111,
14、M 2142, M 2143) tube plates (M 2115), support rings (M 2116), - reactor coolant loops: piping (M 3305 and M 3406); elbow and branch connection castings (M 3403), - reactor coolant pumps: casings (M 3401). (All other parts shall be covered by quality plans for the equipment to which they belong). B 1
15、222 MANUFACTURING DOCUMENTS - Fabrication procedures or instructions - A 3401. - Welding documents - A 3502. - Welding reports - A 3503. - Examination procedures or instructions - A 3601. - Examination reports - A 3602. B 1223 INSPECTION DOCUMENTS - List of examination personnel (awaiting publicatio
16、n). n 113-2007 B 1000 / 3 RCC-M - Edition 2007 Subsection B B 1224 NON-CONFORMANCE REPORT AND DEVIATION REPORT - A 3700 B 1300 IDENTIFICATION B 1310 PURPOSE OF EQUIPMENT IDENTIFICATION SYSTEM The equipment identification system is a means of unequivocally associating an equipment part or weld joint
17、with a given set of documents. B 1320 ADAPTATION OF IDENTIFICATION SYSTEM TO PRODUCTION CONTROL METHODS Identification procedures must therefore be adapted to the type of production control method applied to the part or weld: - control of individual items, using one identification number per item, -
18、 control by lot, using one identification number per lot. When a part is taken directly from stock and has only a steel grade number, the identification procedures set forth in this Code shall not apply. B 1330 IDENTIFICATION METHODS Methods used to identify the components may include: - etching, -
19、temporary marking (with ink, paint, etc.), - labelling, - routing slips. Identification methods and shop organization procedures shall be defined in order to ensure compliance with the objective set under B 1310. B 1340 TYPE OF IDENTIFICATION DATA The RCC-M does not require information related to th
20、e origin of any part or weld (such as heat no., lot no., heat treatment no., welding operator no., etc.) to be marked or written on that item itself, its label or its routing slip. B 1000 / 4 n 113-2007 RCC-M - Edition 2007 Subsection B However, marks or codes which provide clear reference to docume
21、nts containing the information required for production control will always be acceptable. Where lots are divided into one or more fabrication sublots (e.g. for heat treatment), the original lot number need not appear on each item, provided that the new identification system allows for accurate ident
22、ification of the items origins. B 1350 RE-MARKING AND RE-LABELLING If an identification code is removed or erased during fabrication, the Manufacturer shall mark or label another portion of the part as appropriate. Machined items belonging to the same lot do not need to be re-marked after each machi
23、ning operation, provided that: - fabrication procedures provide for total segregation of lots, - rejects are marked immediately, visibly and indelibly. In the particular case of plates, where rolling direction is of significance for subsequent fabrication or testing (e.g. for removal of test samples
24、), this information must appear on the item involved. Discard shall always be identified according to its intended use. B 1360 MARKING METHODS Marking methods shall comply with requirements given in chapter F 2000. B 1370 REFERENCING METHODS B 1371 RULES APPLICABLE TO ALL EQUIPMENT The following sha
25、ll be necessary to establish a clear correlation between the weld and its documentary records: a) for welds ground flush with base metal: position of weld joint plane shall be indicated before welding by etching four symbols into the metal at 90 angles to each other, on either side of and at equal d
26、istances from a girth weld and at either end of a longitudinal weld. These marks shall be located at least 80 mm from the weld bevel. However, the weld joint may be referenced on only one side provided that the position of reference marks and the tolerance value with respect to the bevel are shown o
27、n a drawing or in a procedure and that the identification number starts with an arrow indicating the position of weld with respect to the reference marks. n 113-2007 B 1000 / 5 RCC-M - Edition 2007 Subsection B b) for radiographically-examined welds on pressure-retaining components: a reference poin
28、t shall be given on each weld as a basis for all referencing, including location marking of radiographic films. Where location markers have not been used, another symbol placed next to the reference point will indicate in which direction the radiographs should be turned for interpretation. B 1372 RU
29、LES FOR AUXILIARY PIPING All pipe welds, including those ground flush with the base metal and those requiring radiographic examination, shall be marked with an identification number which is visible after installation. Identification numbers shall be designated in accordance with isometric drawings.
30、 They shall be etched in the metal at least 40 mm from the weld bevels. This distance may not be complied with in certain cases where its observance could be impossible or could lead to a problem or an ambiguity concerning identification. However, this marking shall be made as far as possible from t
31、he weld bevels. Marking shall take place prior to the welding operation. Reference marks shall also be made near the identification numbers. Numbers for welds ground flush with the base metal shall be located no less than 80 mm from the weld bevels. The Contractor shall establish marking procedures
32、which he shall make mandatory for all Manufacturers, to ensure that identification codes for all parts of a given installation are consistent. B 1373 RULES FOR MAIN REACTOR COOLANT AND MAIN SECONDARY SYSTEM PIPING AND OTHER EQUIPMENT All pressure-retaining welds, including those ground flush with th
33、e base metal and those requiring radiographic examination, shall be marked with an identification number. All identification numbers shall be given on the Manufacturers documents. If, for technical reasons, these markings must be removed or erased, their original location with relation to specified
34、points on the equipment can be obtained from the drawings. Templates may be used for relocating identification markings on some weld joints, especially as an alternative to the above-mentioned drawings. B 1000 / 6 n 113-2007 RCC-M - Edition 2007 Subsection B B 2000 MATERIALS B 2100 GENERAL Chapter B
35、 2000 sets out conditions for selection and use of materials in the manufacture of products and parts for the equipment covered by subsection B. Reference is made, where appropriate, to SECTION II, MATERIALS. Note : The terms ferritic steels and austenitic steels have sometimes been wrongly used in
36、the various sections of this Code. Materials corresponding to procurement specification series M 3300, M 3400 and M 4000 or SECTION II, shall be considered as belonging to the category austenitic steels. Other materials belong to the category ferritic steels. B 2200 APPLICATION OF SECTION II Conditi
37、ons specified in chapter M 100 shall apply. Table B 2200 lists the procurement specifications to which the Manufacturer shall refer for parts or types of parts covered by the requirements of this subsection. The class 1 criteria in product procurement specifications covering several classes of compo
38、nents specified in table B 2200 shall be applicable to all pressure-retaining components. Class 1 criteria shall similarly be applicable to all non-pressure-retaining components unless otherwise specified (class 2 or 3) in the applicable documents column of table B 2200. Options, particularly relati
39、ve to choice of grade, may be limited by the equipment specification. B 2300 SUSCEPTIBILITY TO INTERGRANULAR CORROSION B 2310 RULES FOR CLASSIFYING COMPONENTS ACCORDING TO SUSCEPTIBILITY TO INTERGRANULAR CORROSION With respect to susceptibility to intergranular corrosion, austenitic or austenitic-fe
40、rritic stainless steel components and component parts covered by this subsection shall be classified, on the basis of type and thickness of the product (plate, pipe, casting, forging, etc.) and manufacturing operations, into one of the following groups: n 113-2007 B 2000 / 1 RCC-M - Edition 2007 Sub
41、section B Group 1: The risk of intergranular corrosion in service is taken into consideration and subsequent to solution heat treatment the material, during fabrication, is subjected to welding, hot working or heat treatment (at a temperature greater than 450C) which is not followed by solution heat
42、 treatment (repair of castings by welding shall be considered to be equivalent to a welding operation). Group 1a: The risk of intergranular corrosion is taken into consideration and subsequent to solution heat treatment the material is only subjected, during fabrication, to welding. The thickness of
43、 the weld joint shall not exceed 3 mm. Group 2: The risk of intergranular corrosion is taken into consideration but subsequent to solution heat treatment the material is neither welded, hot worked nor heat-treated (at a temperature greater than 450C). The risk of intergranular corrosion must be take
44、n into consideration in all cases, even if such corrosion is accidental. B 2320 REQUIREMENTS B 2321 SELECTION OF STEEL GRADES On the basis of the requirements given above, the use of austenitic stainless steel and austenitic-ferritic stainless steel shall be subject to certain restrictions. Group 1:
45、 Only very low carbon austenitic stainless steels, with or without molybdenum, and austenitic stainless steels stabilized with niobium or titanium may be used. In addition, the following steels covered by individual procurement specifications meeting the requirements of M 228.2 and M 227 respectivel
46、y may also be used. a) Very low carbon and controlled nitrogen content austenitic stainless steels, with or without molybdenum (M 228): controlled nitrogen content Z2 CN 18.10, controlled nitrogen content Z2 CND 17.12. b) Cast austenitic-ferritic stainless steels whose carbon content does not exceed
47、 0.040% and whose ferrite content (as measured on a Schaeffler diagram) is from 12 to 20%, with or without molybdenum (M 227): Z3 CN 20.09 M. Z3 CND 19.10 M. Group 1a: Group 1 steels and low carbon austenitic stainless steels Z5 CN 18.10 and Z5 CND 17.12 may be used. Group 2: Group 1, group 1a, Z6 C
48、N 18.10 and Z6 CND 17.12 steels may be used. B 2000 / 2 n 113-2007 RCC-M - Edition 2007 Subsection B B 2322 DETECTING SUSCEPTIBILITY TO INTERGRANULAR CORROSION Unless otherwise stated in the procurement specifications, detecting susceptibility to intergranular corrosion is required for group 1 and g
49、roup 1a materials, in cases where the carbon content as determined by ladle analysis is: - above 0.030% for austenitic stainless steels, - above 0.035% for controlled nitrogen austenitic stainless steels, - above 0.040% for cast austenitic-ferritic stainless steels, The requirements are given in the relevant procurement specifications. B 2400 COBALT CONTENT OF AUSTENIC AND AUSTENITIC-FERRITIC STAINLESS STEELS AND NICKEL-CHROMIUM IRON ALLOYS B 2410 GENERAL Equipment included under this subsection is not located
