1、RCC-M-Edition 2007 SECTION III EXAMINATION METHODS_EXAMINATION METHODSSECTION III DESIGN AND CONSTRUCTION RULESFOR MECHANICAL COMPONENTS OF PWRNUCLEAR ISLANDSRCC-MRCC-M - Edition 2007 Section III - MC MC 1000 MECHANICAL, PHYSICAL, PHYSICO-CHEMICAL AND CHEMICAL TESTS MC 1100 GENERAL This chapter desc
2、ribes test conditions and sets the dimensions for specimens. MC 1110 SAMPLING METHOD MC 1111 TEST MATERIALS The location and orientation of specimens in the test samples are specified in SECTION II under general provisions and technical specifications and shall be indicated in the documents issued b
3、y the Manufacturer or materials Supplier. MC 1112 WELDING The location of test specimens is specified in annex S I to SECTION IV. MC 1200 MECHANICAL TESTS Test conditions and dimensions of specimens shall comply with AFNOR standards* referred to below and with any modifications or additional specifi
4、cations appearing in this chapter. * Note : Titles of AFNOR standards have been translated for the RCC-M. MC 1210 TENSILE TESTS Tension testing machines shall be verified as specified in standard NF EN ISO 7500-1. Machines used shall be at least class 1. Extensometers shall be verified as specified
5、in standard NF EN ISO 9513 (extensometers used shall be class 1 or better), or as specified in ASTM E.83 (extensometers used shall be class B2 or better) n 113-2007 MC 1000 / 1 RCC-M - Edition 2007 Section III - MC MC 1211 TENSILE TESTING AT ROOM TEMPERATURE Standards NF EN 10002-1 and NF EN 895 sha
6、ll be applied taking the following remarks into account: A - NF EN 10002-1 Tension testing (test method). ANNEX D Specimen diameter shall be 10 mm (reduced section). Where a specimen of this diameter cannot be procured, small specimens may only be used for information purposes or where explicit prov
7、ision is made for this possibility. ANNEX E Where the thickness of the tube (or fitting) allows, a test specimen with a diameter of 10 mm shall be used. Otherwise, the test shall be performed on strips cut from the tube (or fitting) or on sections of tube (or fitting). B - NF EN 895 Destructive test
8、s on metal component welds. Transverse-weld tensile test. The degassing treatment proposed in the note of paragraph 5.3 of the standard is not allowed. MC 1212 TENSILE TESTING AT HIGH TEMPERATURE The standard NF EN 10002-5 shall be applied taking the following remarks into account: - Paragraph 6.2,
9、annex C: Test specimen diameter shall be 10 mm (reduced section). Where a specimen of this diameter cannot be procured, small specimens may be tested where explicit provision is made for this possibility. - Paragraph 6.2, annex D Where the thickness of the tube (or fitting) allows, a test specimen w
10、ith a diameter of 10 mm shall be used. Otherwise, the test shall be performed on strips cut from the tube (or fitting) or on sections of tube (or fitting). - Paragraph 10.3 The rate of stressing shall not exceed 80 MPa per minute up to yield strength. MC 1220 IMPACT TESTS - PLOTTING OF DUCTILE-TO-BR
11、ITTLE TRANSITION CURVES Testing machines shall be verified as specified in standard NF EN 10045.2. This verification should be carried out at twelve month intervals and no less than once every 18 months. MC 1000 / 2 n 113-2007 RCC-M - Edition 2007 Section III - MC MC 1221 IMPACT TESTS Dimensions of
12、specimens and test conditions shall comply with the prevailing AFNOR standard referred to below. A - NF EN 10045.1 Charpy impact test Each test shall involve 2 or 3 specimens in compliance with the specifications of SECTIONS II and IV. For each specimen the percent shear fracture and the lateral exp
13、ansion value must be measured if so required in the procurement specification. These measurements are made in accordance with the indications in B and C below. B - Percent shear fracture - in accordance with specification ASTM A 370 C - Lateral expansion value - in accordance with specification ASTM
14、 A 370 Micrometer readings shall also be authorized, provided that the following precautions are taken: - eL= (e - e1) mm. where eL= lateral expansion, - faces A and B of the two halves of the specimen must be positioned in the exact same plane (P), - lateral expansion values shall be the average re
15、sults of three different measurements. MC 1222 PLOTTING THE DUCTILE-TO-BRITTLE TRANSITION CURVE Tests shall be performed in compliance with MC 1221 at no less than five different temperatures, under the following conditions: - one test at 0C, - one at a temperature on the lower shelf of the curve, c
16、orresponding to less than 10% fibrous fracture, - one at a temperature equal to 100% fibrous fracture, - other temperatures selected with a view to defining the shape of the curve as accurately as possible. As specified by NF EN 10045.1, the temperature of the specimen at fracture shall not differ b
17、y more than 2C from the specified test temperature. The following are used to plot the curve: - absorbed energy values as a function of test temperature, - percent shear fracture values as a function of test temperature. Transition temperature TK 50% is the temperature at which percent shear fractur
18、e is 50%. n 113-2007 MC 1000 / 3 RCC-M - Edition 2007 Section III - MC SCHEMA MC 1221 MC 1230 PELLINI DROP WEIGHT TEST (determination of TNDT) Preparation of specimens and test conditions shall be as stipulated in specification ASTM E 208. Before each series of tests is performed, it is to be ensure
19、d load will be exerted from the correct height (within tolerance limits of + 10% and 0%). The weight of this load shall also be known. Test specimens shall be type P3 with dimensions as shown on figure MC 1230.1. Table MC 1230.1 shows test temperatures for cases where specification calls for an RTND
20、T 0C. Table MC 1230.2 shows test temperatures for cases where specification calls for an RTNDT + 16C. MC 1000 / 4 n 113-2007 RCC-M - Edition 2007 Section III - MC TABLE MC 1230.1 n 113-2007 MC 1000 / 5 RCC-M - Edition 2007 Section III - MC TABLE MC 1230.2 MC 1000 / 6 n 113-2007 RCC-M - Edition 2007
21、Section III - MC FIGURE MC 1230.1 DIMENSIONS OF TYPE P3 SPECIMENS MC 1240 DETERMINATION OF REFERENCE NIL DUCTILITY TRANSITION TEMPERATURE RTNDTshall be determined by conducting both Pellini drop weight and KV impact tests. Pellini drop weight tests shall be performed as specified in MC 1230. KV impa
22、ct tests shall be performed as specified in MC 1221 A. Test temperatures shall be set on the basis of TNDTtemperature (see MC 1230 above). The tests shall be performed as follows (on KV specimens): a) the test is considered valid when each of the three specimens in a given series simultaneously prov
23、ides the following results at a given test temperature: - energy absorbed by breakage 68 J - lateral expansion 0.9 mm. n 113-2007 MC 1000 / 7 RCC-M - Edition 2007 Section III - MC b) the first series of specimens is broken at a temperature of: TTCV1= TNDT+ 33C If conditions set forth in a) above are
24、 met, then: RTNDT= TNDTIf the results differ from those specified in a) above, a second series of specimens is tested as specified in c) below. c) where necessary, a second series of specimens shall be broken at a temperature of: TTCV2= TCV1+ 5C If conditions set forth in a) are met, then: RTNDT= TC
25、V- 33C d) where conditions set forth under a) are not fulfilled at a temperature specified under c), a further series of test specimens shall be broken at temperature intervals of 5C until a temperature TCVis reached at which said conditions are met. It is then considered that: RTNDT= TCV- 33C MC 12
26、50 SPECIAL TOUGHNESS TESTS FOR HEAT-AFFECTED ZONES OF WELDS MC 1251 PELLINI DROP WEIGHT TESTS Test conditions shall be specified in MC 1230. MC 1252 IMPACT TESTS KV impact tests shall be performed in accordance with MC 1221 A. MC 1260 BEND TESTS MC 1261 GENERAL Dimensions of specimens and test condi
27、tions shall comply with AFNOR standards referred to below and with any modifications or additional specifications appearing in this chapter MC 1262 BASIC BEND TEST FOR STEEL PRODUCTS Tests are performed in compliance with standard NF EN ISO 7438. MC 1000 / 8 n 113-2007 RCC-M - Edition 2007 Section I
28、II - MC MC 1263 BEND TESTS FOR WELDS Tests shall performed in compliance with the following standard: - NF EN 910 Destructive tests on metal component welds. Bend tests to which the following specifications and modifications have been added: For test specimens removed from the skin, the bend test sh
29、all be performed in such a way as to allow extension of the skin side of the weld face: transverse or longitudinal face or root bend test. For side bend tests and longitudinal bend test specimens not removed from the skin, either face can be chosen for extension. The specimen shall be bent around a
30、mandrel or roller of diameter 4a. For a press deformation test, the distance between the rollers shall at most be 6.2 a. Specimen ends shall be bent until they are more or less parallel with one another and no further pressure shall be applied. Bending angle after spring-back shall be not less than
31、120. Note: For materials with a limited capacity for deformation, the bending angle shall be limited to a value compatible with this capacity, this may be checked using a grid marked on the extended face of the test specimen. MC 1264 BEND TESTS FOR CLADDING Tests shall be performed as specified in M
32、C 1263 (standard NF EN 910: Destructive tests on metal component welds. Transverse-weld tensile test. Bend tests) Specimens shall be 10 mm thick and 30 mm wide. MC 1265 DISHING TEST The dimensions of the test specimens and test conditions shall be in accordance with standard NF EN ISO 20482 Dishing
33、test with clamped test specimen edges. MC 1270 FLARING AND FLATTENING TESTS MC 1271 TUBES - FLARING TESTS Test is performed in compliance with standard NF EN ISO 8493. The test specimen shall consist of a tube section limited by two planes perpendicular to its axis. These ends shall have been sawn o
34、r cut by mechanical means. Thermal cutting is prohibited. Austenitic stainless steel and nickel-base alloy tubes n 113-2007 MC 1000 / 9 RCC-M - Edition 2007 Section III - MC The test shall be carried out using a tapered mandrel with an angle of 60 until the inside diameter of the tube has been incre
35、ased as specified below: For heat exchanger tubes by 35% For miscellaneous tubes by 30% For nickel-base alloy steam generator tubes by 30% MC 1272 TUBES - FLATTENING TEST Test is performed in compliance with standard NF EN ISO 8492. The test specimen shall consist of a tube section limited by two pl
36、anes perpendicular to its axis. These ends shall have been cut or sawn by mechanical means. Thermal cutting is prohibited. Tube section lengths shall be 1.5 times their wall thickness, but no less than 10 mm and may be limited to 50 mm. Austenitic stainless steel tubes The test involves two steps: -
37、 step one consists of flattening the tube until platen clearance is equal to a given value Z calculated according to the formula: DaKa)K1(Z+= Z = distance between press platens, in mm. a = specified thickness of tube wall, in mm. D = specified outside diameter of tube, in mm. K = coefficient based o
38、n outside diameter D as follows: For heat exchanger tubes K = 0.15 for all diameters (D) and thicknesses (a) For other tubes K = 0,13 if D 114,3 K = 0,11 if D 114,3 - in step two, flattening continues until the specimen fractures or its inside walls touch each other. For testing of welded rolled tub
39、es, weld heads shall be positioned parallel to and halfway between the upper and lower platens of the press. MC 1280 HARDNESS TESTS Testing machines and standardized test blocks shall be verified as specified in the relevant AFNOR standards. MC 1000 / 10 n 113-2007 RCC-M - Edition 2007 Section III -
40、 MC It is recommended that testing machines be verified at yearly intervals: such intervals may not exceed 12 months. - NF EN ISO 6506-2 Brinell hardness test - Verification and calibration of testing machines. - NF EN ISO 6507-2 Iron and steel products - Verification of Vickers hardness testing mac
41、hines. - NF EN ISO 6508-2 Iron and steel products - Verification and calibration of Rockwell hardness testing machines (A, B, C, D, E, F, G, H, K, N and T scales). - NF EN ISO 6506-3 Brinell hardness test - Calibration of reference blocks - NF EN ISO 6507-3 Iron and steel products - Vickers hardness
42、 test - Calibration of reference blocks. - NF EN ISO 6508-3 Iron and steel products - Calibration of reference blocks for use with Rockwell hardness testing machines (A, B, C, D, E, F, G, H, K, N, T scales) Test conditions shall be those set forth in prevailing AFNOR standards and specified in MC 12
43、81, MC 1282, MC 1283 and MC 1284. These standards shall also apply to nickel-base alloys. MC 1281 BRINELL HARDNESS TEST FOR STEEL - TESTING METHOD The test shall be performed in accordance with standard NF EN ISO 6506-1 and the results determined in accordance with standard NF EN ISO 6506-4. MC 1282
44、 ROCKWELL HARDNESS TEST Test is performed in compliance with standard NF EN ISO 6508-1. Iron and steel products -Rockwell hardness test (A, B, C, D, E, F, G, H, K, T scales), MC 1283 VICKERS HARDNESS TEST (HV5 to HV100) The test shall be performed in accordance with standard NF EN ISO 6507-1 and the
45、 results determined in accordance with standard NF EN ISO 6507-4. MC 1284 HARDNESS TEST FOR WELDED TEST COUPONS The test is performed in compliance with standard NF EN 1043-1 with the following requirements: - hardness shall be HV 10, - the minimum distance between the individual indentation centres
46、, in any direction, shall not be less than 2.5 times the average diagonal of the closest indentation. n 113-2007 MC 1000 / 11 RCC-M - Edition 2007 Section III - MC MC 1290 DETERMINATION OF FERRITE CONTENT Where specifications require verification of ferrite content in austenitic-ferrite castings, th
47、is shall be done according to one of the following modes: - based on known chemical composition, the SCHAEFFLER method is used to determine equivalent chromium and nickel content. The representative point is reported on the diagram reproduced on figure MC 1290.1, - from known chemical composition, e
48、quivalent chromium and nickel content are computed: Creq= % Cr + % Mo + 1.5 % Si + 0.5 % Nb Nieq= % Ni + 30 % C + 0.5 % Mn then the equivalent SCHAEFFLER ferrite content is computed using the two following equations: )64.2Ni()75.4Cr(Reqeq+?= Fe % = (149,11 R3- 550,34 R2+ 701,94 R - 297,25 ) R Note:
49、This calculation method is valid for calculated ferrite contents ranging between 10 and 25%. MC 1300 PHYSICAL AND PHYSICO-CHEMICAL TESTS MC 1310 ACCELERATED INTERGRANULAR CORROSION TEST OF AUSTENITIC * STAINLESS 18-10 CHROMIUM NICKEL STEEL MC 1311 GENERAL The purpose of this test is to ensure that the product will resist intergranular corrosion w
