ML20092C614

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Rev 2 to Fabrication Spec 25A5601, Fabrication of Shroud Stabilizer
ML20092C614
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 08/23/1995
From: Ikemoto R
GENERAL ELECTRIC CO.
To:
Shared Package
ML20092C352 List:
References
25A5601, NUDOCS 9509130062
Download: ML20092C614 (30)
v • d • e


Text

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"1 Su no.1 GENuclearEnergy ,

EIS IDENT: FAB SHROUD STABILIZER REVISION STATUS SHEET DOCUMENT TITLE FABRICATION OF SHROUD STABILIZER LEGEND OR DESCRIPTION OF GROUPS TYPE: FABRICATION SPECIFICATION FMF: PEACH BOTTOh! 2,3 MPL NO: PRODUCT SUh!MARYSECTION 7 l- DENOTES CHANGE B13-D070 THIS ITEM IS OR CONTAINS A SAFETY-RELATED ITEM YES X NO EQUIP CLASS CODE E REVISION l C 9/09/94 A RM-01426 RJA 1 J TROVATO RJA CONTROL ISSUE RM-01502 CHKBY:JTROVATO E  !

2 R.H. Ikemoto RJA CN03044 CHK BY: R.H. Ikemoto ,

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PRINTS TO MADE BY APPROVALS GENERAL ELECTKIC COMPANY 175 CURTNER AVENUE 8-30-94 M.O. LENZ 9-9-94 SANJOSE CALIFORNIA 95125 J.L. TROVATO l CHKD BY: ISSUED 9/09/94 ,

9-9-94 R.J. AHMANN CONT ON SHEET 2 l J.L TROVATO 9509130062 950828 PDR ADOCK 05000277 P. PDR

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1. SCOPE.

1.1 This specification defines the requirements for fabrication of.the shroud stabilizer l hardware. These requirements apply as described herein to wrought austenitic stainless steels,

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types 304,304L,316,316L, stainless steel type XM-19, and Ni-Cr-Fe alloy X-750 materials. .l 1.2 i Definitions.

Buyer- General Electric Nuclear Energy (GENE).

Fabricator - The supplier authorized by GENE to perform fabrication services for the 4 hardware items comprising the shroud stabilizers.

2. APPLICABLE DOCUMENTS.

2.1 GE Nuclear Enerav Documents. The following documents form a part of this specification ,

to the extent specified herein. In case of any conflict between this document and any of the l following, the requirements of this document shall govern.

i

a. P50YP102 Arc Welding of Austenitic Stainless Steels.

Cleaning and Cleanliness Control of Reactor System Components.

b. P50YP211
c. E5WP20 Determination of Carbide Participation in Wrought Austenitic Stainless Steels. l
d. E50YP11 Examination for Intergranular Surface Attack. l
e. E50YP22 Liquid Penetrant Examination.
f. Y1010A3 Shop Applied Practices.
g. P10JYP2 Age Hardening of Ni-Cr-Fe Alloy X-750.

2.2 Codes and Standards. The following codes and standards (issue in effect at the date of l the purchase order, or as specified in this specification or its supporting documents) form a part [

of this specification to the extent specified herein. , l 2.2.1 American Society of Mechanical Eneineers ( ASME) Boiler and Pressure Vessel Code  ;

a. Section III, Subsection NG, Core Support Structure,1989 Edition.  ;
b. Deleted.

2.2.2 Deleted. .

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SH No. 3 GEh% 2y601 2.2.3 American Society for Testing and Materials (ASTM)

a. ASTM A-370, Specification for Mechanical Testing of Steel Products.
b. ASTM A-182, Specification for Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Senice. ,
c. ASTM A-240, Specification for Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels.
d. ASTM A-479, Specification for Stainless and Heat-Resisting Steel Wire, Bars, and Shapes for Use in Boilers and Other Pressure Vessels.
e. ASTM B-637, Specification for Precipitation Hardening Nickel Alloy Bar.s, Forgings, and Forging Stock for High-Temperature Senice,
f. ASTM A-262, Specificadon for Detecdng Susceptibility to Intergranular Attack in Stainless Steel.
g. ASTM A-751, Specification for Chemical Analysis of Steel Products.
h. ASTM E-8, Specification for Tension Testing of Metallic Materials.
i. ASTM E-21, Specification for Elevated Temperature Tension Tests for Metallic Materials.

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j. ASTM E-353, Specification for Chemical Analysis of Stainless, Heat Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys.

2.2.4 US Federal Register Code of Federal Remilations (CFR).

a. 10 CFR 50 - Title 10, Energy; Chapter 1, Nuclear Regulatory Commission; Part 50, Licensing of Production and Utilization Facilities, Appendix B, Quality Assurance Criteria for Nuclear Power Plants.
b. 10 CFR 21, Reporting of Defects and Noncompliance.

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3. REQUIREMENTS.

3.1 General. This specification is for use in conjunction with detail product drawings which define the requirements for each part of the shroud stabilizers. Fabrication requirements specific to individual components or piece parts may be defined on the detail product drawings. All such specific fabrication requirements defined on the detail product drawings are in addition to the requirements defined by this specification. It is intended that all parts will be fabricated without welding.

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l 3.2 h1aterials. Parts shall be fabricated from materials specified on the detail product drawings and the additional requirements of this specification. The material for each completed part shall be traceable to its certified material test report (CMTR), Physical and chemical overcheck tests are required for each heat number and heat treat lot of 300 series stainless steel and XM-19 stainless steel material in accordance with the requirements of ASTM A-370 and A-751. Physical and chemical overcheck tests are required for each heat and heat treat lot of Ni-Cr-Fe alloy X-750 in accordance with the requirements of ASTM E-8, E-21, and E-353. Tensile testing for vield strength and ultimate strength is to be performed at both room temperature and 550 "F for all alloy X-750 material.

3.2.1 X-750 Material. Nickel-chrome-iron (Ni-Cr Fe) alloy X-750 shall be in accordance with ASTM B-637, UNS N07750, Type 3 and the additional requirements specified below.

3.2.1.1 X-750 Maximum Cobalt. The maximum cobalt content of Ni-Cr-Fe alloy X-750 material shall be 0.09 percent.

3.2.1.2 X-750 Hot Forming. Ni-Cr-Fe alloy X-750 shall be hot formed in accordance with a buyer approved fabricator's procedure.

3.2.1.3 X-750 Heat Treatment. Ni-Cr-Fe alloy X-750 shall be annealed at 1975 25*F (metal l temperature) and air cooled after hot forming operations. The center of the cross-section shall be held at this temperature for 60 to 70 minutes. Equalizing heat treatment at 1500*F to 1800*F is specifically prohibited. Product forms with both cross section dimensions less than six inches by l

six inches may be water quenched after annealing as a vendor option, and with buyer approval.

Mechanical tests shall be performed at both room temperature and 550"F on specimens which l have been annealed and age hardened, in both the longitudinal and transverse directions (if permitted by the material dimensions).

3.2.1.4 X-750 IGA Testing. Intergranular attack (IGA) testing per E50YP11 shall be performed l

after annealing for each heat and heat treat lot. IGA examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment. IGA examination is not required after age hardening.

3.2.1.5 X-750 Ace Hardening. Ni-Cr-Fe alloy X-750 shall be age hardened at 1300 15*F for 20 hour2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> minimum and air cooled in accordance with P10JYP2D, and a buyer approved procedure. l Age hardening may be performed before or after machining as long as the final part meets all dimensional requirements.

l 3.2.1.6 X-750 Mechanical Pronerties. The minimum yield strength for all X-750 material at 550 'F shall be 92.3 ksi. The minimum ultimate tensile strength for all X-750 material at 550 'F shall be 142.5 ksi. The required properties at room temperature are in accordance ASTM B-637 for UNS N07750, Type 3 material. The maximum bulk hardness for alloy X-750 material and completed parts after age hardening shall be Rc 37.

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l Su No.5 N/I GENudewEnergy y601 g 4

3.2.2 Austenitic 300 Stainless Steel. Austenitic 300 series stainless steel shall be in accordanc with ASTAf A-479, A-182 or A-240 type 304,304L,316 or 316L with a maximum carbon content of i 0.020 percent. The type and applicable ASThi specification shall be as specified on the specific part drawing. The additional requirements below also apply.

3.2.2.1 Austenitic 300 SST Heat Treatment. Austenitic 300 series stainless steel shall b annealed at 2000 100*F (metal temperature) for a minimum of 15 minutes per inch of thickness, but not less than 15 minutes total, immediately followed by quenching in circulating water to a temperature below 400*F. The solution anneal shall be performed after completion of final reduction, sizing, and straightening operations. Successful completion of the sensitization testing of paragraph 3.2.2.2 shall be accepted as evidence of the correct solution heat treatment, if time and temperature charts are not available.

3.2.2.2 Austenitic 300 SST Sensitization. Austenitic 300 series stainless steel shall have sensitization testing performed for each heat and heat treat lot in accordance with the requirements of E50YP20, or ASTM A-262 Practice E.

3.2.2.3 Austenitic 300 SST IGA Testintr. Intergranular attack (IGA) examination shall be performed for each heat and heat treat lot in accordance with the requirements of E50YP11. I examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment.

S 3.2.2.4 Austenitic 300 SST Hardness. The maximum hardness of austenitic 300 series s steel material and completed parts shall be R,90 for types 304 or 304L, and R,92 for types 316 or

< 316L.

3.2.3 XM-19 Stainless Steel. Type XM-19 stainless steel shall be in accordance with ASTM A-479, '

A-182, or A-240. The maximum carbon content is limited to 0.040 per cent. The applicable The additional ASTM specification.shall be as specified on the specific piece part drawing.

requirements below also apply.

3.2.3.1 XM-19 SST Heat Treatment. XM-19 stainless steel shall be solution annealed at 2000*

50*F (metal temperature) for 15 to 20 minutes for each inch of thickness, but for not less than 15 minutes regardless of thickness. The material shall be quenched in circulating water to a

temperature below 800*F. As a vendor option to avoid distortion, the tie rods may be air cooled so that the metal temperature is below 800*F within 20 minutes of removal from the fumace. The solution anneal shall be performed after completion of final reduction, sizing, and straightening operations. Successful completion of the sensitization testing of paragraph 3.2.3.2 shall be accepted as evidence of the correct solution heat treatment, if time and temperature charts are not available.

i 3.2.3.2 XM 19 SST Sensitization. Each heat and heat treat lot of XM-19 material shall be tested for sensitization in accordance with the requirements of ASTM A-262 Practice E.

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5 Sn No. 6

GENuckrEnergy gg601 g 3.2.3.3 XM-19 SST IGA Testine Intergranular attack (IGA) examination shall be performed for each heat and heat treat lot in accordance with the requirements of E50YPil. IGA examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment.

3.2.3.4 AM-19 SST Hardness. The maximum hardness of XM-19 stainless steel material and completed parts shall be R,100.

3.3 Cuttine. Formine. and Clean!D&

3.3.1 Mechanical Cuttine Methods. Methods such as machining, grinding (see also paragraph 3.6) and sawing are acceptable.

Methods such as shearing or punching that form a hardened layer' on the metal surface shall not be used, except where the cold-worked material is l subsequently and completely removed by machining, grinding, or solution heat treatment.

l 3.3.2 Thermal Cutting Methods. Plasma arc cutting may be used with the following restrictions:

If a Interpass temperature control shall be in accordance with P50YP102 for stainless steels.

minimum of 0.12 in of the cut surface is subsequently removed by machining or grinding, the interpass temperature control is not required. Surfaces shall be machined or ground to a bright metal finish following the cutting operation. Preventive measures shall be taken to assure that spatter will not enter areas that are inaccessible to cleaning operations.

L 3.3.3 Bendine and Formine Control for Stainless Steel. There shall be no cold forming, bending, or cold reduction for austenitic stainless steel, unless othenvise specified in the paragraphs below, or unless the component is subsequently solution heat treated.

3.3.4 Prohibited Processes. Processes such as shot peening, hammering, or power deslagging of final surfaces are prohibited.

3.3.5 Straightening. Straightening or reforming shall be performed in accordance with an approved procedure. Minor straightening authorized by manufacturing criteria is permitted, provided deformation is controlled in accordance with Paragraph 3.3.6. Straightening of NI-Cr-Fe alloy X-750 parts with a section thickness greater than 3.0 inches is not allowed without prior approval.

3.3.6 Control of Deformation. For parts that are straightened, reformed, or othenvise subjected to deformation as part of the normal fabrication process, the following controls shall be met: (1) nardness of any material in the final fabricated condition shall not exceed the hardness requirements of paragraphs 3.2.1.6,3.2.2.4 and 3.2.3.4 as determined by an approved procedure.

The buyer approved procedure shallinclude the specification oflocations for hardness testing. If the dimensions of the part permit, the hardness shall be measured with a test device specifically (2) designed to perform Rockwell B measurements or Rockwell C measurements, as applicable.

25A5601 SH NO. 7 GEAtdar%

V REV.2 Cold bending strain shall be limited to two and one-half percent maximum, unless followed by subsequent soludon annealing.

3.3.7 Cleaning and Control of Miscellaneous Process Materials. Miscellaneous process materials include such things as machining lubricants, liquid penetrants, solvents, tapes, ultrasonic testing couplant, abrasive grit, packing materials, marking materials, weld spatter compounds, and other materials which will be in contact with the part being fabricated. All miscellaneous process materials shall be controlled to prevent contamination of stainless steel and Ni-Cr-Fe materials.

The known contaminates of concern are chlorides, fluorides, sulfur, lead, mercury and all metals with low melting points. In addition, when welding or heat treating is involved, all carbonaceous material and phosphates must be considered harmful on stainless steel which can pick up these{

contaminates. Parts may be cleaned in accordance with P50YP211 as one method to control contamination.

3.4 Heating Control for Stainless Steel. Austenitic stainless steel shall not be heated above 800'F except by thermal cutting, unless the process will be followed by solution heat treatment.

3.5 Solution Heat Treatment. Solution heat treatment of machined 300 series stainless steel l parts, if required by the part fabrication dmwing, shall be performed in accordance with qualifi l procedures approved by the buyer and shall meet the following requirements:

a. Parts and any fixtures used in the heat treatment shall be visibly clean prior to heat I treatment. I
b. Heat up and cool down rates shall be controlled to prevent distortion.
c. Parts shall be heated to a temperature between 1900*F to 2100*F for a minimum of 15 minutes per inch of thickness, but for not less than 15 minutes regardless of thickness.
d. Parts shall be quenched in circulating water or gaseous nitrogen from 1900*F to 800 F quickly enough to assure passing the tests required by subparagraph "f" below.
e. All surfaces shall appear reasonably bright and clean after heat treatment and shall meet buyer approved limits for oxide discoloration.
f. Solution heat treated parts shall be tested by demonstrating with a mockup that the temperature is obtainable at a location in the center thickness, farthest from all heated l surfaces, and perform testing in accordance with E50YP11 and E50YP20.

3.6 Control of Grinding. Where possible, grinding shall be performed prior to any solution heat treatment. Grinding should be restricted to instances required by fit-up or nondestructive testing needs. Where practical, machining should be used in place of grinding. A specific exception is that the XM-19 tie rods shall be centerless ground after solution heat treatment.

j SH NO. 8 GENudam Efitiiry)/ 2y601 ,

3.7 Minor Renairs. Minor surface grinding or machining may be performed to remove surface ,

defects or to change contour, provided the following conditions are met:

a. The thickness of the section is not reduced to less than minimum required thickness.

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b. The depression or ground area is to be blended uniformly into the surrounding surface with not less than a 4 to 1 taper.
c. If aggressive grinding was utilized, the final surface shall be polished using successively finer abrasives to a final 220 grit, After final grinding or machining, examine the surfaces by liquid penetrant to insure that j d.

no unacceptable defects are present.

e. Grinding or machining processes shall not introduce unacceptable cold work or hardness in machining process qualification samples.

3.8 Electropolishing. When electropolishing is specified by the part fabrication drawing, the process shall be performed in accordance with a buyer approved procedure using mixed

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phosphoric and sulfuric acids as the primary reagent. The procedure shall have been demonstrated on a test specimen to remove 0.0002 to 0.0006 inch from each exposed surface, prior to acceptance for use on production parts.

3.9 Final Surfaces. All nicks and scratches in excess of applicable surface finish criteria are to l

be removed by blending into the surrounding surface. Surface finishes shall be uniform in

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appearance. l 3.10 Shop Applied Practices. The buyer's specification Y1010A3, " Shop Applied Practices",

shall be considered an integral part of the fabrication drawings, and be so implemented during fabrication and inspection.

3.11 Identification and Markinc. Finished parts shall be marked as specified on the detail product drawings. Low stress intermpted dot stamping is an acceptable method of marking.

Parts which are too small for practical marking may be identified by individual bagging and tagging.

l 4.0 Deleted.

SH NO. 9 GE h h 2y601

5. QUALTIYASSURANCE 5.1 Submittals. Submittal requirements shall apply to the Fabricator and the Fabricator's 3

subcontractors. The Fabricator shall be responsible for all submittals including those of the Fabricator's subcontractors. Revisions or other changes to previously submitted documents or procedures shall be resubmitted for approval by the buyer.

5.1.1 Required Submittals. The following items shall be submitted to the Buyer for approval prior to use:

a. Bending and forming procedures.
b. Heat treating procedures.
c. Deleted.
d. Nondestructive es unination procedures.
e. Packaging procedure.

5.2 Material Control. Material shall be controlled within the fabricator's shops under a quality assurance program which has been determined by survey / audit to meet material traceability and i safety grade manufacturing practices as required by the Code of Federal Regulations 10 CFR 50, Appendix B, and 10 CFR, Part 21.

5.3 Inspection and Tests. All materials, parts and part final surfaces shall be inspected for quality and cleanliness prior to the last operation which results in inaccessibility. Following such l

inspection, measures shall be taken to prevent the entry of soils into inaccessible areas during I subsequent fabrication steps, and during handling, shipping and storage.

5.3.1 Liould Penetrant Examination. All fmal pan surfaces, except small inaccessible openings, shall be examined by the liquid penetrant method in accordance with E50YP22A, except that no cracking is permissible and linear indications shall not exceed 0.06 inch in length. Liquid penetrant materials shall be in accordance with E50YP22 or buyer approved equivalent. Provision shall be made to avoid the entrapment ofliquid penetrant materials in any inaccessible areas.

5.3.2 Deleted.

5.3.3 Ultrasonic Examination. Material shall be ultrasonically examination in accordance uith ASME Code Subsection NG, paragraph NCr2540, or a buyer approved equivalent procedure.

5.3A NDE Personnel Certification. Certification for personnel performing NDE examinations shall be reviewed as part of the approval process of the vendor / fabricator during the vendor qualification audit.

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25A5601 SF 0 0 U GENucharEnergy

6. PREPARATION FOR SHIPMENT 6.1 General Reauirement. Components fabricated to this specification shall be prepared and packaged for shipment in such a manner that the components will not be damaged or lost by handling or environment during transit.

6.2 Procedure. The Fabricator shall package the product in accordance with Buyer approved procedures.

6.3 Identification. The component (s), when prepared for shipment, shall be identified by the purchase order number, drawing number (s), and other pertinent information in such a manner that the component (s) identity shall be maintained during shipment. Special handling j

information (weight, center of gravity, lifting location), as required, shall appear on the outer surfaces of all packages. When more than one component is included in a crate or package, the marking on the packaging shall indicate the identity and quantity of all parts.

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x-] GENuclearEnergy 5 ggQf1

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EIS IDENT: FAB SHROUD STABILIZER REVISION STATUS SHEET DOCUMENT TITLE FABRICATION OF SHROUD STABILIZER LEGEND OR DESCRIPTION OF GROUPS 'IYPE: FABRICATION SPECIFICATION FMF: PEACH BOTFOM 2. 3 MPL NO: PRODUCT

SUMMARY

SECTION 7 l- DENOTES CHANGE B13-D070 THIS ITEM JS OR CONTAINS A SAFETY RELATED ITEM YES X NO [ EQUIP CLASS CODE E REVISION l C

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9/09/94 A RM-01426 RJA 1 JTROVATO RJA CONTROL ISSUE RM-01502 CHK BY:J TROVATO 2 R.H. Ikemoto AUS 2 31995 gy3 CN03044 CHK BY: R.H. Ikemoto PRINTS TO MADE BY APPROVA13 GENERAL ELEUiKIC COMPANY 175 CURTNER AVENUE J.L. TROVATO 8-30-94 M.O.LEN) S-9-94 SANJOSE CALIFORNIA 95125 CHKD BY: ISSUED 9/09/94 J.L. TROVATO 9-9-94 R.J. AH\iANN CONT ON SHFIT 2

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1. SCOPE.

1.1 This specification defines the requirements for fabrication of the shroud stabilizer hardware. These requirements apply as described herein to wrought austenitic stainless steels, types 304,304L,316,316L, stainless steel type XM-19, and Ni-Cr-Fe alloy X-750 materials.

I 1.2 Definitions. i i

Buyer- General Electric Nuclear huergy (GENE).

Fabricator - The supplier authorized by GENE to perform fabrication senices for the hardware items comprising the shroud stabilizers.

2. APPLICABLE DOCUMENTS.

2.1 GE Nuclear Enerav Documents. The following documents fonn a part of this specification ,

to the extent specified herein. In case of any conflict between this document and any of the  !

following, the requirements of this document shall govern. ,

a. P50YP102 Arc Welding of Austenitic Stainless Steels.

-1

b. P50YP211 Cleaning and Cleanliness Control of Reactor System Components.
c. E50YP20 Determination of Carbide Participation in Wrought Austenitic Stainless ,

Steels.

d. E50YP11 Examination for Intergranular Surface Attack.

i

c. E50YP22 Uguid Penetrant Examination.
f. Y1010A3 Shop Applied Practices,
g. P10JYP2 Age Hardening of Ni-Cr-Fe Alloy X-750.

. Codes and Standards. The following codes and standards (issue in effect at the date of 2.2 the purchase order, or as specified in this specification or its supporting documents) form a part of this specification to the extent specified herein.

2.2.1 Amc rican Society of Mechanical Encineers ( ASME) Boiler and Pressure Vessel Code

a. - Section III, Subsection NG, Core Support Structure,1989 Edition.

4

b. Deleted, i

. 2.2.2 Deleted.  !

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'N GENudearEneryy j'y ' i 2.2.3 American Society for Testing and Materials (ASTM)

a. ASTM A-370, Specification for Mechanical Testing of Steel Products.
b. ASTM A 182, Specification for Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Senice.
c. ASTM A-240, Specification for Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels.
d. ASTM A-479, Specification for Stainless and Heat-Resisting Steel Wire, Bars, and Shapes for Use in Boilers and Other Pressure Vessels.
c. ASTM B-637, Specification for Precipitation Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Senice.
f. ASTM A-262, Specification for Detecting Susceptibility to Intergranular Attack in Stainless Steel.
g. ASTM A-751, Specification for Chemical Analysis of Steel Products.
h. ASTM E-8, Specification for Tension Testing of Metallic Materials.
i. ASTM E-21, Specification for Elevated Temperature Tension Tests for Metallic Materials.
j. ASTM E-353, Specification for Chemical Analysis of Stainless, Heat Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys.

2.2.4 US Federal Recister Code of Federal Reculations (CFR).

a. 10 CFR 50 - Title 10, Energy; Chapter 1, Nuclear Regulatog Commission; Part 50, Licensing of Production and Utilization Facilities, Appendix B, Quality Assurance Criteria for Nuclear Power Plants.
b. 10 CFR 21, Reporting of Defects and Noncompliance.
3. REQUIREMENTS.

3.1 General. This specification is for use in conjunction with detail product drawings which define the requirements for each part of 'he shroud stabilizers. Fabrication requirements specific to individual components or piece parts may be defined on the detail product drawings, All such specific fabrication requirements defined on the detail product drawings are in addition to the requirements defined by this specification. It is intended that all parts will be fabricated without welding.

O GENudearEnergy 5

ggfg' 3.2 Meterials. Parts shall be fabricated from materials specified on the detail product drawings and the additional requirements of this specification. The material for each completed part shall be traceable to its certified material test report (CMTR). Physical and chemical overcheck tests are required for each heat number and heat treat lot of 300 series stainless steel and XM-19 stainless steel material in accordance with the requirements of ASTM A-370 and A-751. Physical and chemical overcheck tests are required for each heat and heat treat lot of Ni-Cr-Fe alloy X-750 in accordance with the requirements of ASTM E-8, E-21, and E-353. Tensile testing for yield strength and ultimate strength is to be performed at both room temperature and 550 *F for all alloy X-750 material.

3.2.1 X-750 Material. Nickel-chrome-iron (Ni-Cr-Fe) alloy X-750 shall be in accordance with ASTM B-637, UNS N07750, Type 3 and the additional requirements specified below.

3.2.1.1 X-750 Maximum Cobalt. The maximum cobalt content of Ni-Cr-Fe alloy X-750 material shall be 0.09 percent.

3.2.1.2 X-750 Hot Forming. Ni-Cr-Fe alloy X-750 shall be hot formed in accordance with a buyer approved fabricator's procedure.

3.2.1.3 X-750 Heat Treatment. Ni-Cr-Fe alloy X-750 shall be annealed at 1975 25T (metal temperature) and air cooled after hot forming operations. The center of the cross-section shall be held at this temperature for 60 to 70 minutes. Equalizing heat treatment at 15007 to 18007 is specifically prohibited. Product fonns with both cross section dimensions less than six inches by six inches may be water quenched after annealing as a vendor option, and with buyer approval.

Mechanical tests shall be performed at both room temperature and 5507 on specimens which have been annealed and age hardened, in both the longitudinal and transverse directions (if permitted by the material dimensions).

3.2.1.4 X-750 IGA Testine. Intergranular attack (IGA) testing per E50YP11 shall be performed after annealing for each heat and heat treat lot. IGA examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment. IGA examination is not r , aired after age hardening.

3.2.1.5 X-750 Ace Hardening. Ni-Cr-Fe alloy X-750 shall be age hardened at 1300 157 for 20 hour2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> minimum and air cooled in accordance with P10JYP2D, and a buyer approved procedure.

l Age hardening may be performed before or after machining as long as the final part meets all dimensional requirements 3.2.1.6 X-750 Mechanical Pronerties. The minimum yield strength for all X-750 material at 550 *F shall be 92.3 ksi. The minimum ultimate tensile strength for all X-750 material at 550 *F shall be 142.5 ksi. The required properties at room temperature are in accordance ASTM B-637 for UNS l N07750, Type 3 material. The maximum bulk hardness for alloy X-750 material and completed l

parts after age hardening shall be Rc 37.

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2 601 SH NO. 5 g

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3.2.2 Austenitic 300 Stainless Steel. Austenitic 300 series stainless steel shall be in accor with ASTM A-479, A-182 or A-240 type 304,304L,316 or 316L with a maximum carbon content of l 0.020 percent. The type and applicable ASTM specification shall be as specified on the specific 4

part drawing. The addidonal requirements below also apply.

3.2.2.1 Austenitic 300 SST Heat Treatment. Austenitic 300 series stainless steel shall be annealed at 2000 1007 (metal temperature) for a minimum of 15 minutes per inch of thickness, but not less than 15 minutes total, immediately followed by quenching in circulating l

water to a temperature below 4007. The solution anneal shall be performed after completion of
final reduction, sizing, and straightening operations. Successful completion of the sensitization testing of paragraph 3.2.2.2 shall be accepted as evidence of the correct solution heat treatment, j if time and temperature charts are not available.

3.2.2.2 Austenitic 300 SST Sensitization. Austenitic 300 series stainless steel shall have sensitization testing performed for each heat and heat treat lot in accordance with the requirements of E50YP20, or ASTM A-262 Practice E.

< 3.2.2.3 Austenitic 300 SST IGA Testine. Intergranular attack (IGA) examination shall be

performcd for each heat and heat treat lot in accordance with the requirements of E50YP11. IG j examination is not required if a minimum of 0.030 inch of material is removed from all surfaces

]

of the product form after final heat treatment.

3.2.2.4 Austenitic 300 SST Hardness. The maximum hardness of austenitic 300 series stai steel material and completed parts shall be R,90 for types 304 or 304L, and Pg 92 for types 316 or i 316L.

L 3.2.3 XM-19 Stainless Steel. Type XM-19 stainless steel shall be in accordance with ASTM A-479, 4 A-182, or A-240. The maximum carbon content is limited to 0.040 per cent. The applicable .

ASTM specification shall be as specified on the specific piece part drawing.

The additional requirements below also apply.

3.2.3.1 XM-19 SST Heat Treatment. XM-19 stainless steel shall be solution annealed at 2000T

507 (metal temperature) for 15 to 20 minutes for each inch of thickness, but for not less than 15 minutes regardless of thickness. The material shall be quenched in circulating water to a j temperature belov 8007. As a vendor option to avoid distortion, the tie rods may be air cooled ,

so that the metal temperature is below 8007 within 20 minutes of removal from the furnace. The l solution anneal shall be performed after completion of final reduction, sizing, and straightening operations. Successful et apletion of the sensitization testing of paragraph 3.2.3.2 shall be '

accepted as evidence of the correct solution heat treatment, if time and temperature charts are not amilable. l J

3.2.3.2 XM-19 SST Sensiti.tation. Each heat and heat treat lot of XM-19 material shall be tested for sensitization in accordance with the requirements of ASTM A-262 Practice E. l I

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p 2 601 SH NO. 6 gg_

1 3.2.3.3 XM-19 SST IGA Testine. Intergranular attack (IGA) examination shall be performed for each heat and heat treat lot in accordance with the requirements of E50YPll. IGA examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment.

3.2.3.4 XM-19 SST Hardness. The maximum hardness of XM-10 stainless steel material and completed parts shall be R,100.

3.3 Cuttine. Formine. and Cleanine.

3.3.1 Mechanical Cuttine Methods. Methods such as machining, grinding (see a'so paragraph 3.6) and sawing are acceptable. Methods such as shearing or punching that form a hardened layer on the metal surface shall not be used, except where the cold-worked material is subsequently and completely removed by machining, grinding, or solution heat treatment.

3.3.2 Thermal Cuttine Methods. Plasma arc cutting may be used with the following restrictions:

If a  !

Interpass temperature control shall be in accordance with P50YP102 for stainless steels.

minimum of 0.12 in of the cut surface is subsequently removed by machining or grinding, the interpass taaperature control is not required. Surfaces shall be machined or ground to a bright metal fimish following the cutting operation. Preventive measures shall be taken to assure that spatter will not enter areas that are inaccessible to cleaning operations.

3.3.3 Bendine and Formine Control for Stainless Steel. There shall be no cold forming, bending, or cold reduction for austenitic stainless steel, unless otherwise specified in the paragraphs below, or unless the component is subsequently solution heat treated.

3.3.4 Prolnited Processes. Processes such as shot peening, hammering, or power deslagging of final surfaces are prohibited.

1 3.3.5 Straichtenine. Straightening or reforming shall be performed in accordance with an I approved procedure. Minor straightening authorized by manufacturing criteria is permitted, provided deformation is controlled in accordance with Paragraph 3.3.6. Straightening of NI-Cr-

- Fe alloy X-750 parts with a section thickness greater than 3.0 inches is not allowed without prior approval.

i 3.3.6 Control of Deformation. For parts that are straightened, reformed, or otherwise subjected to deformation as part of the normal fabrication process, the following controls shall be met: (1)

Hardness of any material in the final fabricated condition shall not exceed the hardness requirements of paragraphs 3.2.1.6,3.2.2.4 and 3.2.3.4 as determined by an approved procedure.

The buyer approved procedure shallinclude the specification oflocations for hardness testing. If l the dimensions of the part permit, the hardness shall be measured with a test device specifically designed to perform Rockwell B measurements or Rockwell C measurements, as applicable. (2) l l

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25A5601 SH NO. 7 GE/Wzdar % REV.2 Cold bending strain shall be limited to two and one-Lalf percent maximum, unless followed by subsequent solution annealing.

3.3.7 Cleaning and Control of Miscellaneous Process Materials. Miscellaneous process materials include such things as machining lubricants, liquid penetrants, solvents, tapes, ultrasonic testing couplant, abrasive grit, packing materials, marking materials, weld spatter compounds, and oth materials which will be in contact with the part being fabricated. All miscellaneous process materials shall be controlled to prevent contamination of stainless steel and Ni-Cr-Fe materials.

The known contaminates of concern are chlorides, fluorides, sulfur, lead, mercury and all metals with low melting points. In addition, when welding or heat treating is involved, all carbonaceous material and phosphates must be considered harmful on stainless steel which can pick up these contaminates. Parts may be cleaned in accordance with P50YP211 as one method to control contamination.

3.4' Heating Control for Stainless Steel. Austenitic stainless steel shall not be heated above 800'F except by thermal cutting, unless the process will be followed by solution heat treatment.

3.5 Solution Heat Treatment. Solution heat treatment of machined 300 series stainless steel parts, if required by the part fabrication drawing, shall be performed in accordance with qual

' procedures approved by the buyer and shall meet the following requirements:

a. Parts and any fixtures used in the heat treatment shall be visibly clean prior to heat treatment.

Heat up and cool down rates shall be controlled to prevent distortion.

b.

i

c. Parts shall be heated to a temperature between 1900*F to 2100*F for a minimum of 15 minutes per inch of thickness, but for not less than 15 minutes regardless of thickness. ,

Parts shall be quenched in circulating water or gaseous nitrogen from 1900*F to 300"F )

d.

quickly enough to assure passing the tests required by subparagraph 'T' below. J

e. All surfaces shall app-ar reasonably bright and clean after heat treatment and shall meet buyer approved limits for oxide discoloration. l l

i

f. Solution heat treated parts shall be tested by demonstrating with a mockup that the temperature is obtainable at a location in the center thickness, farthest from all heated l j

l surfaces, and perform testing in accordance with E50YP11 and E50YP20.

l Control of Grinding. Where possible, grinding shall be performed prior to any solution j 3.6 heat treatment. Grinding should be restricted to instances required by fit-up or nondestructive i testing needs. Where practical, machining should be used in place of grinding. A specific I exception is that the XM-19 tie rods shall be centerless ground after solution heat treatment.

l 1

- ____.___:_____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___ _ I

2 601 SH NO. 8 gg 3 3.7 Minor Renairs. Minor surface grinding or machining may be performed to remove surface

,' defects or to change contour, provided the following conditions are met: '

a. The thickness of the section is not reduced to less than mmimum regtured thickness.
b. The depression or ground area is to be blended uniformly into the surrounding surface

! with not less than a 4 to 1 taper. ,

l c. If aggressive grinding was utilized, the final surface shall be polished using successively finer abrasives to a final 220 grit.

i

d. After final grinding or machining, examine the surfaces by liquid penetrant to insure that no unacceptable defects are present.
e. Grinding or machining processes sha- ot introduce unacceptable cold work or hardness in machining process qualification samples.

3.8 Electropolishing. When electropolishing is specified by the part fabrication drawing, the process shall be performed in accordance with a buyer approved procedure using mixed The procedure shall have been phosphoric and sulfuric acids as the primary reagent.

demonstrated on a test specimen to remove 0.0002 to 0.0006 inch from each exposed surface, prior to acceptance for use on production parts.

3.9 Final Surfaces. All nicks and scratches in excess of applicable surface finish criteria are to be removed by blending into the surrounding surface. Surface finishes shall be uniform in appearance.

3.10 Shon Annlied Practices. The buyer's specification Y1010A3, " Shop Applied Practices",

shall be considered an integral part of the fabrication drawings, and be so implemented during fabrication and inspection.

3.11 Identification and Markintr. Finished parts shall be marked as specified on the detail product drawings. Low stress interrupted dot stamping is an acceptable method of marking.

Parts which are too small for practical marking may be identified by individual bagging and tagging, f

l 4.0 Deleted.

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2 1 SH NO. 9 (f gg

5. QUALTIYASSURANCE 5.1 Submittak. Submittal requirements shall apply to the Fabricator and the Fabricator's subcontractors.

The Fabricator shall be responsible for all submittals including those of the Fabricator's subcontractors. Revisions or other changes to previously submitted documents or

. procedures s hall be resubmitted for approval by the buyer.

5.1.1 Required Submittals. The following items shall be submitted to the Buyer for approval

. prior to use:

a. Bending and forming procedures.
b. Heat treating procedures.
c. Deleted.
d. Nondestructive examination procedures.
e. . Packaging procedure.

5.2 Material Control. Material shall be controlled within the fabricator's shops under a quality assurance program which has been determined by survey / audit to meet material traceability an safety grade manufacturing practices as required by the Code of Federal Regulations 10 CFR Appendix B, and 10 CFR, Part 21, 5.3 Inspection and Tests. All materials, parts and part final surfaces shall be inspected for quality and cleanliness prior to the last operation which results in inaccessibility.~ Following suc

~ inspection, measures shall be taken to prevent the entry of soils into iriaccessible areas during subsequent fabrication steps, and during handling, shipping and storage.

5.3.1 Liould Penetrant Examination. All final part surfaces, except small inaccessible openings, shall be examined by the liquid penetrant mesod in accordance with E50YP22A, except that no cracking is permissible and linear indications shall not exceed 0.06 inch in length. Liquid penetrant materials shall be in accordance with E50YP22 or buyer approved equivalent. Prosisio shall be made to avoid the entrapment ofliquid penetrant materials in any inaccessible areas.

5.3.2 Deleted.

.5.3.3 Ultrasonic Examination. Material shall be ultrasonically examination in accordance with ASME Code Subsection NG, paragraph NG-2540, or a buyer approved equivalent procedure.

. 5.3.4. NDE Personnel Certification. Certification for personnel performing NDE examinations shall be_ reviewed as part of the approval process of the vendor / fabricator during the vendor qualification audit.

- .. _ .... - - m = - - __-. . -._ - __ - _- -_-____ ____

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6. PREPARATION FOR SHIPMENT 6.1 General Reauirement. Components fabricated to this specificadon shall be prepared and j

l packaged for shipment in such a manner that the components will not be damaged or lost by i handling or environment during transit.

l

! .6.2' Procedure. The Fabricator shall package the product in accordance with Buyer approved

, procedures.

j 6.3 Identification. The component (s), when prepared for shipment, shall be identified by the j- purchase order number, drawing number (s), and other pertinent informadon in such a manner that the component (s) idendty shall be maintained during shipment. Special handling informadon (weight, center of gravity, lifdng location), as required, shall appear on the outer surfaces of all packages. When more than one component is included in a crate or package, the marking on the packaging shall indicate the identity and quandty of all parts.

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GENudearEnergy *5^5l' EIS IDENT: FAB SHROUD STABILIZER REVISION STATUS SHEET DOCUMENT TITLE FABRICATION OF SHROUD STABILIZER LEGEND OR DESCRIPTION OF GROUPS TYPE: FABRICATION SPECIFICATION FMF: PEACH BOTTOM 2,3 MPL NO: PRODUCT

SUMMARY

SECTION 7 l- DENOTES CHANGE B13-D070 THIS ITEM IS OR CONTAINS A SAFETY-RELATED ITEM YES { NO [ EQUIP CLASS CODE E REVISION lC 9/09/94 A RM-01426 RJA 1 JTROVATO RJA CONTROL ISSUE RM-01502 CHK BY:J TROVATO R.H. Ikemoto AUG 2 31995 gyg 2

CN03044 CHK BV: R.H. Ikemoto l

8 PRINTS TO MADE BY APPROVALS GENERAL ELECTRIC COMPANY 175 CURTNER AVENUE I.L TROVATO 8-30-94 M.O. LENZ 9-9-94 SAN TOSE CALIFORNIA 95125 CHKD BY: ISSUED l 9/09/94 9-9-94 R.J. AHMANN CONT ON SHEET 2 J.L.TROVATO I . . ~ _

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1. SCOPE. .i j

1.1 . This specification defines the requirements for fabrication of the shroud _ stab'dizer  !

hardware. These requirements apply as described herein to wrought austenitic stainless steels, types'304,304L,316,316L, stainless steel type XM-19, and Ni-Cr-Fe alloy X-750 materials.  !

1.2 . Definitions.  !

Buyer - General Electric Nuclear Energy (GENE).  ;

Fabricator - The supplier authorized by GENE to perform fabrication. services for the .

hardware items comprising the shroud stabilizers.

2.- APPLICABLE DOCUMENTS.

2.1 GE Nuclear Enerav Documents. The following documents form a part of this specification f to the extent specified herein. In case of any conflict between this document and any of the . l following, the requirements of this document sha!! govern.'

a. P50YP102- Arc Welding of Austenitic Stainless Steels. ,
b. P50YP211 Cleaning and Cleanliness Control of Reactor System Components.
c. E50YP20 Determination of Carbide Participation in Wrought Austenitic Stainless Steels. .
d. E50YP11 Examination for Intergranular Surface Attack. ,
e. E50YP22 Liquid Penetrant Examination.
f. Y1010A3 Shop Applied Practices. ,
g. P10JYP2 Age Hardening of Ni-Cr-Fe Alloy X-750. ,

2.2 Codes and Standards. The following codes and standards (issue in effect at the date of the purchase order, or as specified in this specification or its supporting documents) form a part -I of this specification to the extent specified herein.

2.2.1 American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code a.- Section III, Subsection NG, Core Support Structure,1989 Edition.

b. Deleted.  ;

2.2.2 Deleted.

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( 25A5601 SH NO. 3 GE h %

J 2.2.3 American Society for Testine and Materials (ASTM)

a. ASTM A-370, Specification for Mechanical Testing of Steel Products. i
b. ASTM A-182, Specification for Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service.
c. ASTM A-240, Specification for Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels.
d. ASTM A-479, Specificadon for Stainless and Heat Resisting Steel Wire, Bars, and Shapes for Use in Boilers and Other Pressure Vessels.
e. ASTM B-637, Specification for Precipitation Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service,
f. ASTM A-262, Specification for Detecting Susceptibility to Intergranular Attack in Stainless Steel.
g. ASTM A-751, Specificadon for Chemical Analysis of Steel Products.
h. ASTM E-8, Specification for Tension Testing of Metallic Materials.
i. ASTM E-21, Specification for Elevated Temperature Tension Tests for Metallic Materials.
j. ASTM E-353, Specification for Chemical Analysis of Stainless, Heat Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys. .

2.2.4 US Federal Recister Code of Federal Reculations (CFR).

a. 10 CFR 50 - Title 10, Energy; Chapter 1, Nuclear Regulatory Commission; Part 50, I.icensing of Production and Utilization Facilities, Appendix B, Quality Assurance Criteria for Nuclear Power Plants,
b. 10 CFR 21, Reporting of Defects and Noncompliance.

1

3. REQUIREMENTS.

3.1 General. This specification is for use in conjunction with detail product drawings which define the requirements for each part of the shroud stabilizers. Fabricadon requirements specific to individual components or piece parts may be defined on the detail product drawings. All such specific fabrication requirements defined on the detail product drawings are in addition to the requirements defined by this specification. It is intended that all parts will be fabricated without welding.

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Sn No.1 O GENudearEnergy 5

ggQ61g 3.2 Materials. Parts shall be fabricated from materials specified on the detail product drawings and the additional requirements of this specification. The material for each completed part shall be traceable to its certified material test report (CMTR). Physical and chemical overcheck tests are required for each heat number and heat treat lot of 300 series stainless steel and XM-19 stainless steel material in accordance with the requirements of ASTM A-370 and A-751. Physical and chemical overcheck tests are 'equired for each heat and heat treat lot of Ni-Cr-Fe alloy X-750 in accordance with the requiren ents of ASTM E-8, E-21, and E-353. Tensile testing for yield strength and ultimate strength is to be performed at both room temperature and 550 "F for all alloy X-750 material.

3.2.1 X-750 Material. Nickel-chrome-iron (Ni-Cr-Fe) alloy X-750 shall be in accordance with ASTM Ik637, UNS N07750, Type 3 and the additional requirements specified below.

3.2.1.1 X-750 Maximum Cobalt. The maximum cobalt content of Ni-Cr-Fe alloy X-750 material shall be 0.09 percent.

3.2.1.2 X-750 Hot Formine. Ni-Cr-Fe alloy X-750 shall be hot formed in accordance with a buyer approved fabricator's procedure.

3.2.1.3 X-750 Heat Treatment. Ni-Cr-Fe alloy X-750 shall be annealed at 1975 25T (metal temperature) and air cooled after hot forming operations. The center of the cross-section shall be held at this temperature for 60 to 70 minutes. Equalizing heat treatment at 1500 F to 18007 is specifically prohibited. Product forms with both cross section dimensions less than six inches by six inches may be water quenched after annealing as a vendor option, and with buyer approval.

Mechanical tests shall be performed at both room temperature and 550T on specimens which have been annealed and age hardened, in both the longitudinal and transverse directions (if permitted by the material dimensions).

3.2.1.4 X-750 IGA Testine. Intergranular attack (IGA) tesdng per E50YP11 shall be performed after annealing for each heat and heat treat lot. IGA examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment. IGA examination is not required after age hardening.

3.2.1.5 X-750 Ace Hardening. Ni-Cr-Fe alloy X-750 shall be age hardened at 1300 157 for 20 hour2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> minin um and air cooled in accordance with P10JYP2D, and a buyer approved procedure.

Age hardening may be performed before or after machining as long as the fmal part meets all dimensional requirements.

3.2.1.6 X-750 Mechanical Pronerties. The minimum yield strength for all X-750 material at 550 F i shall be 92.3 ksi. The minimum ultimate tensile strength for all X-750 material at 550 *F shall be 142.5 ksi. The required properties at room temperature are in accordance ASTM B-637 for UNS N07750, Type 3 material. The maximum bulk hardness for alloy X-750 material and completed l parts after age hardening shall be Rc 37.

I

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!1 2 601 SH NO. 5 l f gg 3.2.2 Austenitic 300 Stainless Steel. Austenitic 300 series stainless steel shall be in accord with ASTM A-479, A-182 or A-240 type 304,304L,316 or 316L with a maximum carbon content of -

0.020 percent. The type and applicable ASDI specification shall be as specified on the specific part drawing. The additional requirements below also apply..

3.2.2.1 Austenitic 300 SST Heat Treatment. Austenitic 300 series stainless steel sha annealed at 2000 100*F (metal temperature) for a minimum of 15 minutes per inch of '

thickness, but not less than 15 minutes total, immediately followed by quenching in circulating 4 water to a temperature below 400*F. The solution anneal shall be performed after completion o j final reduction, sizing, and straightening operations. Successful completion of the sensitization '

testing of paragraph 3.2.2.2 shall be accepted as evidence of the correct solution heat treatment, if time and temperature charts are not available.

3.2.2.2 Austenitic 300 SST Sensitization. Austenitic 300 series stainless steel shall have sensitization testing performed for each heat and heat treat lot in accordance with the ,

}

requirements of E50YP20, or ASTM A-262 Practice E.

3.2.2.3 Austenitic 300 SST IGA Testing. Intergranular attack (IGA) examination shall be performed for each heat and heat treat lot in accordance with the requirements of E50YP1 examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment.

{)

i 3.2.2.4 Austenitic 300 SST Hardness. The maximum hardness of austenitic 300 seri steel material and completed parts shall be R,90 for types 304 or 304L, and R,92 for types 316 or 316L.

l 3.2.3 XM-19 Stainless Steel. Type XM-19 stainless steel shall be in accordance with ASDI A-479,

. A-182, or A-240. The maximum carbon content is limited to 0.040 per cent. The applicable The additional ASTM specification shall be as specified on the specific piece part drawing.

requirements below also apply.

3.2.3.1 XM-19 SST Heat Treatment. XM-19 stainless steel shall be solution annealed at 50*F (metal temperature) for 15 to 20 minutes for each inch of thickness, but for not less than 15 minutes regardless of thickness. The material shall be quenched in circulating water to a temperature below 800*F. As a vendor option to avoid distortion, the tie rods may be air cooled so that the metal temperature is below 800*F within 20 minutes of removal from the fumace. The solution anneal shall be performed after completion of final reduction, sizing, and straightening operations. Successful completion of the sensitization testing of paragraph 3.2.3.2 shall be accepted as evidence of the correct solution heat treatment, if time and temperature charts are

. not available.

3.2.3.2 XM-19 SST Sensitization. Each heat and heat treat lot of XM-19 material shall be teste for sensitization in accordance with the requirements of ASTM A-262 Practice E.

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) GENuabarEnergy [*g 1 3.2.3.3 XM-19 SST IGA Testinc._ Intergranular attack (IGA) examination shall be performed for each heat and heat treat lot in accordance with the requirements of E50YPll. IGA examination is not required if a minimum of 0.030 inch of material is removed from all surfaces of the product form after final heat treatment.

3.2.3.4 XM-19 SST Hardness. The maximum hardness of XM-19 stainless steel material and completed parts shall be R,100.

3.3 Cuttinc. Formine. and Cleanine.

c 3.3.1 Mechanical Cuttine Methods. Methods such as machining, grinding (see also paragraph 3.6) and sawing are acceptable. Methods such as shearing or punching that form a hardened layer on the metal surface shall not be used, except where the cold-worked material is subsequently and completely removed by machining, grinding, or soludon heat treatment.

3.3.2 Thermal Cuttine Methods. Plasma arc cutting may be used with the following restrictions:

If a Interpass temperature control shall be in accordance with P50YP102 for stainless steels.

minimum of 0.12 in of the cut surface is subsequently removed by machining or grinding, the interpass temperature control is not required. Surfaces shall be machined or ground to a bright metal finish following the cutting operation. Prevendve measures shall be taken to assure that spatter will not enter areas that are inaccessible to cleaning operations.

3.3.3 Bendine and Formine Control for Stainless Steel. There shall be no cold fonning, bending, or cold reduction for austenitic stainless steel, unless othenvise specified in the paragraphs below, or unless the component is subsequently solution heat treated.

3.3.4 Prohibited Processes. Processes such as shot peening, hammering, or power deslagging of final surfaces are prohibited.

3.3.5 Straichtening. Straightening or reforming shall be performed in accordance with an approved procedure. Minor straightening authorized by manufacturing criteria is permitted, provided deformation is controlled in accordance with Paragraph 3.3.6. Straightening of NI-Cr-Fe alloy X-750 parts with a section thickness greater than 3.0 inches is not allowed without prior approval.

3.3.6 Control of Deformation. For parts that are straightened, reformed, or othenvise subjected to deformation as part of the normal fabrication process, the following controls shall be met: (1)

Hardness of any material in the final fabricated condition shall not exceed the hardness requirements of paragraphs 3.2.1.6,3.2.2.4 and 3.2.3.4 as determined by an approved procedure.

The buyer approved procedure shall include the specification oflocations for hardness testing. If the dimensions of the part permit, the hardness shall be measured with a test device specifically designed to perform Rockwell B measurements or Rockwell C measurements, as applicable. (2) 1

1 2 601 SH NO. 7  !

gg Cold bending strain shall be limited to two and one-half percent' maximum, unless followed by  ;

subsequent solution annealing.

3.3.7 Cleaning and Control of Miscellaneous Process Materials. Miscellaneous process materials l

4 include such things as machining lubricants, liquid penetrants, solvents, tapes, ultrasonic testing j

couplant, abrasive grit, packing materials, marking materials, weld spatter compounds, and other materials which will be in contact with the part being fabricated. All miscellaneous process 4 materials shall be controlled to prevent contamination of stainless steel and Ni-Cr-Fe matedals.

The known contaminates of concern are chlorides, fluorides, sulfur, lead, mercury and all metals with low melting points. In addition, when welding or heat treating is involved, all carbonaceous l material and phosphates must be considered harmful on stainless steel which can pick up these contaminates. Parts may be cleaned in accordance with P50YP211 as one method to control ,

l 4 contamination.

l 3.4 Heatine Control for Stainless Steel. Austenitic stainless steel shall not be heated above 800*F except by thermal cutting, unless the process will be followed by solution heat treatment.

4

3.5 Solution Heat Treatment. Solution heat treatment of machined 300 sedes stainless steel
  • parts, if required by the part fabrication drawing, shall be performed in accordance with qualifie
procedures approved by the buyer and shall meet the following requirements:

I a. Parts and any fixtures used in the heat treatment shall be visibly clean prior to heat treatment. ,

1

b. Heat up and cool down rates shall be controlled to prevent distortion.
c. Parts shall be heated to a temperature between 1900*F to 2100 F for a minimum of 15 minutes per inch of thickness, but for not less than 15 minutes regardless of thickness.

i

d. Parts shall be quenched in circulating water or gaseous nitrogen from 1900*F to 800 F quickly enough to assure passing the tests required by subparagraph "f' below.
e. All surfaces shall appear reasonably bright and clean after heat treatment and shall meet buyer approved limits for oxide discoloration.
f. Solution heat treated parts shall be tested by demonstrating with a mockup that the. ,

j temperature is obtainable at a location in the center thickness, farthest from all heated l surfaces, and perform testing in accordance with E50YP11 and E50YP20.

3.6 Control of Grinding. Where possible, grinding shall be performed prior to any solution heat treatment. Grinding should be restricted to instances required by fit-up or nondestructive i testing needs. . Where practical, machining should be used in place of grinding. A specific exception is that the XM-19 tie rods shall be centerless ground after solution heat treatment.  ;

i l

f

+ . . - -

i 1

l 2 601 SH NO. 8 ggg 3.7 Minor Repairs. Minor surface grinding or machining may be performed to remove surface defects or to change contour, provided the following conditions are met:

a. The thickness of the section is not reduced to less than minimum required thickness.
b. - The depression or ground area is to be blended uniformly into the surrounding surface with not less than a 4 to 1 taper.
c. If aggressive grinding was utilized, the final surface shall be polished using successively finer abrasives to a final 220 grit.
d. After final grinding or machining, examine the surfaces by liquid penetrant to insure that no unacceptable defects are present.
e. Grinding or machining processes shall not introduce unacceptable cold work or hardness in machining process qualification samples.

3.8 Electropolishing. When electropolishing is specified by the part fabrication drawing, the process shall be performed in accordance with a buyer approved procedure using mixed phosphoric and sulfuric acids as the primary reagent. The procedure shall have been demonstrated on a test specimen to remove 0.0002 to 0.0006 inch from each exposed surface, prior to acceptance for use on production parts.

3.9 Final Surfaces. All nicks and scratches in excess of applicable surface finish criteria are to be removed by blending into the surrounding surface. Surface finishes shall be uniform in appearance.

3.10 Shop Applied Practices. The buyer's specification Y1010A3, " Shop Applied Practices",

shall be considered an integral part of the fabrication drawings, and be so implemented during fabrication and inspection.

3.11 Identification and Marking. Finished parts shall be marked as specified on the detail product drawings. Low stress interrupted dot stamping is an acceptable method of marking.

Parts which are too small for practical marking may be identified by individual bagging and tagging.

l 4.0 Deleted.

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O GENuchar&mr9y

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25A5601- SH NO. 9 Q. Rgy. 2 5.' QFALITYASSURANCE r 5.1 Submittals. Submittal requirements shall apply to the. Fabricator and the Fabricator's i subcontractors. The Fabricator shall be responsible' for all submittals including those of the-Fabricator's subcontractors. Revisions or other changes to previously submitted documents'or j l'

. procedures shall be resubmitted for approval by the buyer. l 5.1.1 Reauired Submittals. The following items shall be submitted to the Buyer for approval prior to use: l I

a. Bending and forming procedures.

b.- Heat treating procedures. .

}

c. Deleted.

. 1 Nondestructive examination procedures.  :

d.

3

e. Packaging procedure.  ;

5.2 Material Control. Material shall be controlled within the fabricator's shops under a quality assurance program which has been determined by survey / audit to meet material traceability and - ,

safety grade manufacturing practices as required by the Code of Federal Regulations 10 CFR 50,  !

Appendix B, and 10 CFR, Part 21. i

- 5.3 Inspection and Tests. All materials, parts and part final surfaces shall be inspected for i

. quality and cleanliness prior to the last operation which results in inaccessibility. Following such inspection, measures shall be taken to prevent the entry of soils into inaccessible areas during i i

subsequent fabrication steps, and during handling, shipping and storage.

5.3.1 Liquid Penetrant Examination. F1 final part surfaces, except small inaccessible openings, '

shall be examined by the liquid penetrant method in accordance with E50YP22A, except that no cracking is permissible and linear indications shall not exceed 0.06 inch in length. Liquid l

penetrant materials shall be in accordance with E50YP22 or buyer approved equivalent. Provision shall be made to avoid the entrapment ofliquid penetrant materials in any inaccessible areas.

5.3.2 Deleted.'

1 5.3.3 Ultrasonic Examination. Material shall be ultrasonically examination in accordance with l i

ASME Code Subsection NG, paragraph NG-2540, or a buyer approved equivalent procedure, 5.3.4 NDE Personnel Certification. Certification for personnel performing NDE examinations shall be reviewed as part of the approval process of the vendor / fabricator during the vendor qualification audit.

Q 9 :. . ..

5A56 1 SH NO.10

( GENudearEnergy

% REV.2 F f /J A L.

6. PREPARATION FOR SHIPMENT 6.1 General Reouirement. Components fabricated to this specification shall be prepared and packaged for shipment in such a manner that the components will not be damaged or lost by handling or environment during transit.

6.2 Procedure. The Fabricator shall package the product in accordance with Buyer approved l

procedures.

6.3 Identification. The component (s), when prepared for shipment, shall be identified by the purchase order number, drawing number (s), and other pertinent information in such a marmer that the component (s) identity shall be maintained during shipment. Special handling information (weight, center of gravity, lifting location), as required, shall appear on the outer surfaces of all packages. When more than one component is included in a crate or package, the marking on the packaging shall indicate the identity and quantity of all parts.

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