ML20211H073

Forwards Review of safety-significant Evaluations (SSE) of Const Deviations in Civil/Structural Populations.Tentative Schedule for SSE & App P Issues Deemed Inappropriate Based on Current Contractual Requirements

ML20211H073
Person / Time
Site:	Comanche Peak
Issue date:	06/18/1986
From:	Landers D TELEDYNE ENGINEERING SERVICES
To:	Noonan V NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
Shared Package
ML20209E570	List: IA-86-657, Advises of Meetings Scheduled for 850701,10,17 & 31 in Bethesda,Md to Discuss Util Program Plan.Nrc Response Will Be Sent to Util by 850807 ML20209E567 ML20209F940 ML20209F945 ML20209G005 ML20209J318 ML20210A660 ML20210A729 ML20210A774 ML20210B207 ML20210B978 ML20210C077 ML20210C318 ML20210C513 ML20210C590 ML20210C696 ML20210D123 ML20210D374 ML20210D403 ML20210D459 ML20210D880 ML20210E104 ML20210R211 ML20210S437 ML20211H073
References
FOIA-86-657 6410-64, NUDOCS 8606230101
Download: ML20211H073 (4)

Text

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, 6*7 8 E 2350 *.*.M 710 J M SCS June 18, 1986 6410-64 i

Mr. V. Noonaq, Project Director Comarche Peak Project United States Nuclear Regulatory Commission -

Office of Nuclear Reactor Regulation Division of Licensing

'- Mail Stop P-234 Washington, D. C., 20555 SU3 JECT: 'TES Memorandum related to Review of Safety Significant Evaluations

Dear Mr. Noonan,

, ., Atached please find the subject memorandum. Based on current contractual requirements, it is recognized that the " Tentative Schedule" on p.tge 3 will not be appropriate.

If you have any questions please contact me or Mr. James Rivard.

Very truly yours, TELEDYNE ENGINEERING SERVICES I

/[ M Donald F.' Landers Executive Vice President s

DFL:mid attachment RC)

S.Bajwa(NRC)

I. Barnes (Region IV)

J. Rivard (TES)

J. Cragin (TES) 6410 File fc3A-%-6S7 B/y r

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,.D . MM MEMORANDUM ENGSEERNG SERVICES T0: D. F. Landers FROM: J. J. Rivard 8 DATE: June 18, 1986

SUBJECT:

Project 6410 - Comanche Peak Civil / Structural Review Programs Review of Appendix P, Civil / Structural Issues Review of Safety Significance of Construction Deviations (ISAP VII.c)

REF: TES Letter 6410-42, dated January 31, 1986 to Mr. Charles Tramell of NRC Review of Safety Significance of Construction Deviations The following is a sumary of the review of the Safety-Significant j

Evaluations of the Construction Deviations in the Civil / Structural Popula-l tions. There are a total of fifteen populations in the C/S area. This effort involves the review of eleven populations, including:

Concrete (CONC)

Structural Steel (STEL)

Fill and Backfill (FILL)

Liners (LINR)

Fuel Pool Liner (FPLR)

Instrument Pipe / Tube Supports (INSP)

HVAC Supports (HVDS)

Category I Conduit Supports (C0SP)

Equipment Supports (EQSP)

Cement Grout (GRTC)

Epoxy Grout (CRTE)

Excluded are the populations related to piping:

Large-Bore Pipe Supports - Rigid large-Bore Pipe Supports - Nonrigid Small-Bore Pipe Supports Pipe Whip Restraints These areas are being reviewed by R. D. Hookway of Teledyne.

.,u* * .

yM ENGEEERNG SERVICES T0: D. F. Landers June 18, 1986 Page 2 On January 31, 1986, a proposed audit plan was submittd to Charles Trannell (TES Letter 6410-42). The following is a sumnary of this audit plan for the SSE's:

1. Review methodology and procedures.

2. Audit evaluations.

3. Audit sample expansions (if any).

During the week of April 28, 1986, TES began to audit the Civil / Structural SSE's. The audit consisted of a revew of methodology and procedures as well as audits of specific SSE's.

Population #SSE's Reviewed CONC 10 STEL 4 LINR 3 FPLR 3

, HVDS 6 INSP 1 COSP 6 EQSP ,

J TOTAL 36 l

l This audit was performed under the direction of Region IV (Ian l Barnes), and the audit report is to be issued by the Region. The present intent is to review 10 percent of the SSE's. Since there are approximately

.1,500 SSE's in the eleven C/S Populations, excluding the Piping Populations, 150 SSE's will be reviewed, of which 36 have been reviewed.

l At the time of the !:revious audit, the only deviations determined to be safety significant, therefore resulting in sample expansion,'were found with pipe-support locking devices (missing cotter pins).

, Concerns as a result of the initial audit of the Civil / Structural SSE's.

f (1) Concrete - Cast-in-place anchor bolts were installed out of tolerance. The evaluation states that the analysis of the anchor bolts and attachment uses the as-installed locations.

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This should be verified by a review of project procedures and i specific calculations.

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TM ENGNEERNG SEEES T0: D. F. Landers June 18, 1986 Page 3 (2) Similar deviations identified in a number of the populations, including weld deficiencies, support locations, brace configura-tions, may be safety significant if occurring at 'other locations. The adverse trending should be reviewed to determine how this will be addressed.

(3) Equipment Supports - The torque of Unistrut bolts holding an Electric Control Box was determined to be 100 in-lbs instead of 228 in-lbs as required by the installation procedure. The evaluation demonstrated that 100 in-lbs were adequate to support the control box. However, during the reinspection of the torque, it was noted that the mounting lugs began to bend at 100 in-lbs. The concern is that, if in fact 228 in-lbs was used at similar applications, the control box may be damaged.;. This attribute should be reviewed in the Elec. Equipment Population.

This may be significant.

The continuation of the SSE reviews will continue some; timeeafter July 7,1986. In addition to the review outlined in the referenced letter, .

I recommend that the adverse trending, along with areas listed above,,

specifically design procedures and calculations for cast-in-place; anchor.r bolts and installation procedures for electrical equipment supports, .ba:.

reviewed to complete the audit of the Civil / Structural SSE's.

Resolution of APPENDIX P, Civil / Structural Issues Based on discussions with ERC, the Draft Report will be complete:

August 1, 1986. TES suggests an audit at the site shortly after that;and one additional audit of the Final Report.

Tentative Schedule for SSE and APPENDIX P Issues (Two people for each audit)

SSE one week in July (SSEReview) one week in August (SSE and Trending).

one week in October (Final) l l Appendix P one week in August (After Draft Report) one week in November (Final) l l JJR:mld l

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