TXX-8959, Forwards Advance FSAR Submittal Re Design Limits for Bolted Piping Support & Bolted Flange Joints.Change Allows Use of ASME Code Edition & Addenda in Sser 14,Section 4.1.2.2 for Design Limits

Forwards Advance FSAR Submittal Re Design Limits for Bolted Piping Support & Bolted Flange Joints.Change Allows Use of ASME Code Edition & Addenda in Sser 14,Section 4.1.2.2 for Design Limits

ML20246M166
Person / Time
Site:	Comanche Peak
Issue date:	08/31/1989
From:	William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-89597, NUDOCS 8909070111
Download: ML20246M166 (12)

Text

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""":"""" Log # TXX-89597:.

1 .~~ File # 10010 C C- 903.9 7UELECTRIC .Ref. # 10CFR50.55(a)

. August 31, 1989 Esmtive Vue hesident U. S. Nuclear Regulatory Commission Attn: Document Control Desk

.. W ashington, D. C. 20555

SUBJECT:

C0riANCHE MAK STEAM ELECTRIC STATION' (CPSES)

DOCKET NOS. 50-445 AND 50-446-

' ADVANCE FSAR SUBMITTAL DESIGN LIMITS FOR BOLTED. PIPING SUPPORT JOINTS.

AND BOLTED FLANGE JOINTS 4-Gentlemen:

--*- This letter provides an advance copy of'a change to be included in a future FSAR amendment. ~This change allows the use of the referenced ASME code edition and addenda documented in Safety Evaluation Report Supplement 14 Section 4,1.2.2_for the design limits of bolted piping support joints and bolted flange joints.

In order-to facilitate NRC staff review of this change, the attachment is organized as follows:

1. Draft revised.FSAR pages, with changed portions indicated by a bar in the margin, as they are to appear in a future araendment.

2. A detailed description / justification for the change.

3. A copy of the related SER section.

4. A page containing the title of a " bullet" which consolidates and categorizes similar individual changes -by subject and related SER section.

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8909070111 890831

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i TXX-89597 l ' August 31', 1989-Page 2 of 2-

-5. The bold /overstrikelversion of the! revised FSAR pages referenced by;

'the detailed' description / justification-for:the changes identified-above. 'The bold / overstrike version facilitates. review of the

revision

by highlighting each addition' of'new text in bold type font-and overstriking with a. slash'(/) the portion,of the text that ist deleted.

Sincerely..-

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William'J. Cahill, Jr.

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By OW24 b, 23' '

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R.OfWalker

. Manager, Nuclear. Licensing.

HAM /ser-Attachment

c. Mr. R. D. Martin.. Region IV

_1 Resident Inspectors._CPSES (3) .

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'l Attachment to TXX-89597 August 31,- 1989 i

Advance FS/R Submittal Concerning .~.

'I Design Limits For Bolted Piping Support Joints And. .! '

Bolted Flange Joints -

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' Item 1-Draft Revised FSAR Pages 2,3 I Item 2-  : Detailed Description / Justification 4

'l for Changes j Item 3 Related SER Sect? 5,6,7 l

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Item 4 Bullet Title 8

' Item 5 Bold /0verstrike Version of 9,10'  ;

Revised FSAR Pages J I

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CPSES/FSAR

.; . Attachm:nt.'to TXX-89597 Paga 2 of 10 a. Elastic analysis for the design of Class 2 and 3 p ,- .

I components in accordance with subparagraph NB 3227.6 of -

ASME B&PV Code,Section III.

p b. Limit analysis is done at a specific location when the limits on local membrane stress intensity and primary bending stress intensity do not satisfy'the limits of ASME B&PV Code,Section III, subparagraph NB 3228.2.

61-l_ l 2.- Bolts For the Code Class'2 and 3 components not.in Westinghouse *s scope, the following are the criteria for the design of bolting:

DRAFT a. Bolts for Component Supports (Other than Pipe Supports)  !

0112.13  ;

40 Normal and Unset Conditions - The design limits are as per ASME B&PV Code,Section III, Article XVII-2460 and NRC approved ASME Code Cases as indicated in the specification.

0112.13

.20 Emeraency Condition - The bolt allowables are 1.33 times l

the allowable used in the normal and upset conditions.  !

i 0112.13  :,

20 Faulted Condition - The bolt allowables for normal and j upset conditions are increased by a factor which is the '

lower of 1.2 (Sy/Ft) or 0.7 (Su/Ft). However, the total j allowable stress shall not exceed 0.9 Sy in any case.  !

20 Sy - Yield stress j 20 Ft - Allowable tensile stress l 1

.j 20- Su - Ultimate tensile stress Draft Version 3.9B-14 1

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b, , Attach ent to-TXX-89597 CPSES/FSAR Pag 2;3 of 10 f: 0112.13 L

L b.- Bolts for Pipe Support Joints DRAFT The design limits for bolted pipe support joints are in DRAFT accordance with the ASME B&PV Code,Section III, 1983 Edition including the Summer 1983 Addenda, paragraphs NF 3225 and NF 3324.6.

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c. Bolts for Flange Joints l DRAFT The design limits for bolted flange joints connecting pipe DRAFT to pipe and/or pipe to equipment are in accordance with the ASME B&PV Code,Section III, 1983 Edition, subparagraphs NC/ND 3658.2 and NC/ND 3658.3.

d. Bolts and Components DRAFT 0112.13 Bolts for components do not exceed the Code allowable DRAFT stress limits.

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3. Non-ASME Code Class Components The supplier of the mechanical components not covered by the ASME B&PV Code must demonstrate by experimental testing or calculation that the design stress limits (with use of applicable codes and standards) are sufficiently below the elastic limits to ensure operability.

3.98.2 DYNAMIC TESTING AND ANALYSIS 3.9B.2.1 Preonerational Vibration and Dynamic Effects Testina on Pinina l0112.12 The purpose of preoperationel vibration and dynamic effects tests of i

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i 3.98-15 Draft Version l

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. . DETAILED DESCRIPTION

,.Atta'hment

c to TXX-89597-

. .Page,4_cf 10 FRAR'Page

, (as amended) Group Description 3.9B-14, 15 2. ' Allows the use of design'11mits for bolted. pipe support

-joints in accordance with'ASME III, subsection 1NF, paragraphs NF-3225 and NF-3324.6 of the 1983 Edition-Summer 1983 Addenda.

Correction:

' Incorporates the design limits provided by ASME III, paragraphs NF-3225 and NF-3324.6 of the 1983 Edition -

Summer 1983 Addenda. This correction replaces.the-criteria with design limits presnted to the NRC by=

TV Electric report entitled, " Documentation of'ASME III' NA-1140 Review for Piping and Supports," revision 2 dated September 30. 1987 and subsequently. reviewed and' approved y:the NRC as documented in NUREG-0797, Supple-ment'14 to the Safety Evaluation Report, section 4.1.2;2, pages 4-6 thru 4-8.

FSAR Change Request Number: 88-569.1 Related SER Section: 3.9.3: SSER14 4.1.2.2 SER/SSER Impact: No 3.9B-14.-15 2 Allows the. usage of Design limits for the design of bolted. flange joints connecting pipe and/or pipe to equipment in accordance with ASME III, subparagraphs NC/ND 3658.2 and 3658.3 of the 1983 Edition-Summer 1983 Addenda.

Correction:

Incorporates the design limits provided by ASME III.

subparagraphs NC/ND 3658.2 and 3658.3 of the 1983 Ed.-

Summer 1983 Addenda. This correction replaces the criteria with design limits presented to the NRC by TV Electric-report entitled,

" Documentation of ASME III NA-1140 Review for Piping and Supports," revision 2,. dated September 30, 1987 and subsequently reviewed and approved by the NRC as documented in.NUREG-0797, Supplement 14 to theLSafety '[.

Evaluation Report, section 4.1.2.2, pages 4-6 thru 4-8. .;

FSAR Change Request Number: 88-569.2 Related SER Section: 3.9.3: SSER14 4.1.2.2

SER/SSER Impact

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<, , [AttachanttoTXX-89597-

, , ,'Page.5.cf=10 4.1.2.2 Design Criteria and Methodology The CPSES pipe stress and pipe support design criteria in CPFP-7 (Reference 30) j have been oeveloped by.SWEC for the design validation of ASME Code Class 1, 2. -

and 3 pipe supports and ASPE Code Class 2 and 3 piping systems. The ,

controlling . documents for the SWEC design validation Aftert are contained in ^

Comanche Peak Project Procedures CPPP-1 through CPPP-35 (Appendix E of this l supplement). The piping stress analyses and pipe support calculations will become the CPSES analyses of record and provide assurance that the structural qualification of the piping and pipe supports within the CAP scope are in accordance with CPSES licensing commitments and the applicable requirements of

.the ASME Boiler and Pressure Vessel Code (References 27 and 28). The following sections discuss the staff review and evaluation of the CPSES design criteria and analytical methodologies used in the piping and pipe support design validation.

Review of Final Safety Analysis Report Amendment 61 In Amendment'01 (Reference 31) to the CPSES Final Safety Analysis Report (FSAR)

(Reference 32), the applicant provided the changes made to the FSAR piping design criteria as a result of the CAP design validation effort. As a result of its review of the FSAR Amendment 61 changes, the staff concludes that the changes do not si and supplements (gnificantly Reference 11)alter theinstaff except findings the areas in thetoprevious related (1) the CPSES SEP combinationofloss-of-coolantaccident(LOCA)andsafe-shutdownearthquake (SSE) Iceds (Section 3.9.2.3 of the SER) and (2) the piping system damping values (Section 3.7.1 of the SER).

The staff evaluated the combination of LOCA and SSE loads for reactor coolant system heavy component supports in its safety evaluation provided in a letter from C. I. Grimes (NRC) to W. Counsil (TU Electric) dated June 8, 1967 (Reference 33), in conjunction with the implementation of the final rule on the modification of 10 CFR SO, Appendix A, General Design Criterion 4 requirements for protection against the dynamic effects-of postulated pipe ruptures (51 Federal Register 12505, dated April 11,1986). Similarly, the staff found that the use of revised damping values per ASME Code Case N-411 (Reference 34) was acceptable for CPSES as discussed in a letter from V. Noonan (NRC) to W.

Counsil (TU Electric) dated March 13, 1986 (Reference 35).

The staff also reviewed the technical acceptability of the FSAR Amendment 61 changes and the use of later ASME Code provisions as perinitted in paragraph NA-1140(f) of the ASME Code Section III (Reference 27). The staff's review of the use of later ASME Code provisions focused primarily on the technical justifications provided in the applicant's report entitled, " Documentation of ASME III NA-1140 Review for Piping and Supports," Revision 2, dated September 30, 1987 (NA-1140 report). This report documented the applicant's review performed to ensure that the use of design criteria in CPPP-7 is in conformance with paragraph NA-1140(f) of the ASME Code and, in particular, that all related ASME. Code requirements are met. The code of record for CPSES piping is ASME

- Code Section III,1974 Eoition, including Sumner 1974 Addenda Subsections NC/ND (Reference 27). The code of record for CPSES pipe supports is the 1974 Edition including Winter 1974 AdJenda Subsection NF (Reference 28). On the basis of its review of the NA-1140 report, the staff finds that all related Comanche Peak SSER 14 4-6

,AttachCent te TXX-89597 Page 6 of 10 requirements associated with the use of specific provisions of a Ccde edition

-or addenda were met and thus . the use of later Code provisions as specified in the NA-1140 report is acceptable. The specific provisions from later Code editions and addenda reviewed and approved by the staff for CPSES are listed below:

(1) 1977 EDITION - WINTER 1978 ADDENDA Appendix 0 - Rules for Design of Safety Valve Installations (2) 1983 EDITION' i;C-3658.2 - Standard Flange Joints at Moderate Pressures and Temperatures NC-3658.3 - ANSI B16.5, Flanged Joints with High-Strength Bolting

.ND-3658.2 - Standard Flange Joints at Moderate Pressures and Temperatures ND-3658.3 - ANSI S16.5, Flanged Joints with High-Strength Bolting (3) 1983 EDITION - WINTER 1984 ADDENDA Figure NC-3673.2(b) Flexibility and Stress Intensification Factors (Do/tm less than or equal to 100)

(Branch Connections, Buttwelds, and Fillet Welds)

Figure NC-3673.2(b) Branch Dimensions Figure ND-3673.2(b) Flexibility and Stress Intensification Factors (Do/tm less than or, equal to 100)

(Branch Connections, Buttwelds, and Fillet Welds)

Figure ND-3673.2(b) Branch Dimensions (4) 1977_ EDITION - WINTER 1978 ADDENDA XVII-2211 - Stress in Tension Figure XV11-2111(c) Illustrations of Maximum Design Stress in Through Thickness Direction of Plates and Elements of Rolleo Shapes (Figure Delete 6) hF-3226 - Through Plate Thickness Tensile Limit Figure AF-3226.5 Illustrations of Maximum Design Stress in Thrcugh Thickness Direction of Plates and Elements of Rolled Shapes (Figure Deleted) i NF-33?l.1 - Design Ccnditions 1

~ Comanche Peak SSER 14 4-7

.. ,,'AttachM nt to TXX-89597

_ Page 7<of 10 (5) ;1977 EDITION - WINTER 1979 ADDEhDA NF-3391.1 - Allowable Stress Limits (Class 2 and MC Plate /Shell)

NF-3392.1 - Allowable Stress Limits (Cicss 2 and MC Linear)

.(6) 1500 EDITION hF-1133 - Intervening Elements .n Relation to Jurisdictional Bcundaries hF-1131.6 - Portion F (7) 1980. EDITION XVII-2462 - Minimum Edge Distance (8) 1983 EDITION - SUP91ER 1983 ADDENDA NF-3225 - Design of Bolting NF-3324.6 - Design Requirements for Bolted Joints (9) 1983 EDITION - SUMMER 1985 ADDENDA NF-4721 - Bolt Holes (10) 1974 EDITION - WINTER 1975 ADDENDA NC-6221 - Minimum Required Hydrostatic Test Pressure

~(11) 1^74 EDITION - WINTER 1975 ADDENDA XVII-2410 - General Requiremer.ts (for the Design of Connections and Joints (12)1960 EDITION - WINTER 1982 ADDENDA NF-3324.5 - Design Requirements for Welos (13)1974 EDITION - SUMMER 1975 ADDENDA NB-3630(d) - Exemptions for Class 1 Piping It should be noted that 10 CFR 50.55a " Codes and Standards " currently references the ASME Code,Section III, Division 1 up to the 1983 Edition including the Summer 1984 Addenda. Although the portion of 10 CFR 50.55a pertaining to ASME Code Class 2 and 3 piping is not directly applicable to CPSES, it does provide the staff position regarding the latest Code edition and addenda found suitable for use. Several provisions listed above from later Code addenda (i.e., Winter 1984 Addenda and Summer 1985 Addenda) are not referenced currently in 10 CFR 50.55a. A final rule has been developed to update 10 CFR 50.55a to incorporate by reference the Winter 1984 Addenda, Summer 1985 Adcenda. Winter 1985 Addenda, and 1986 Edition of Section III, 1

i Comanche Peak SSER 14 4-8

I . Attachpr;nt to TXX-89597 Pag 3 8 of 10-3.9.3 ASME Code Class 1. 2 and 3 Components. Component Supports and Core Sucoort Structures EMEB 20. The FSAR has extended the code usage for Class. 2 and 3 bolting for flange joints and piping support joints.

CPSES/FSAR

• Attach::nt to TXX-89597.

'Page 9 of 10 a. Elastic-analysis for the d2 sign of Class 2 and 3 components in accordance with subparagraph NB 3227.6 of

.ASME B&PV Code,Section III.

b.- Limit analysis is done at a specific location when the limits. on local membrane stress intensity and primary bending stress intensity do not satisfy the limits of ASME B&PV Code Section III, subparagraph NB 3228.2.

61-

2. Bolts For the Code Class 2 and 3 components not in Westinghouse's scope, the following are the critaria for the design of bolting:

a. Bolts.for Component Supports (Other than Pipe Supports) 1 0112.13 40 Normal and Unset Conditions - The design-limits are as per ASME B&PV Code,Section III, Article XVII-2460 and NRC approved ASME Code Cases as indicated in the specification.

0112.13 20 Emeraency Condition - The bolt allowables are 1.33 times the allowable used in the normal and upset conditions.

0112.13 20 Faulted Condition - The bolt allowables for normal and upset conditions are increased by a factor which is the lower of 1.2 (Sy/ft) or 0.7 (Su/Ft). However, the total allowable stress shall not exceed 0.9 Sy in any case.

20 Sy = Yield stress 20 Ft - Allowable tensile stress 20 Su - Ultimate tensile stress Bold /0verstrike 3.9B-14 Version

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.m Attachm2nt to TXX-89597 CPSESUSM Page 10 of 10  !

0112.13

b. Bolts for Pipe Support Joints q The design limits for bolted pipe support joints are in accordance with the ASME B&PV Code,Section III,1983 Edition including the Summer 1983 Addende, paragraphs NF l 3225 and NF 3324.6.

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c. Bolts for Flange Joints The design limits for bolted flange joints connecting pipe i to pipe and/or pipe to equipment e m in accordance with j the ASME B&PV Code Section III, 1983 Edition, subparagraphs NC/ND 3658.2 and NC/ND 3658.3.

d. Bolts and Components WI 5fddi & ddfi fdt pipd fiddddi Id/dd/ fMdd 24 fddMddl WMd/d J 20 fMd dddfdd p/didd/d ddd fddpd/dfdtd dd ddf didddd ISS Pif .

df 200d f dddfdtd fd fMd (d(ditddddff df Eddd didd 17dit ,

0112.13 di Bolts for components do not exceed the Code allowable 20 stress limits.

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3. Non-ASME Code Class Components The supplier of the mechanical components not covered by the ASME B&PV Code must demonstrate by experimental testing or calculation that the design stress. limits (with use of applicable codes and standards) are sufficiently below the elastic limits to ensure operability.

3.95.2 DYNAMIC TESTING AND ANALYSIS j 3.9B.2.1 Preonerational Vibration and Dynamic Effects Testino on Pioino 0112.12 The purpose of preoperational vibration and dynamic effects tests of I

3.9B-15 Bold /0verstrike

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