ML19318A037

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Part 21 Rept Re Util Use of Invalid Seismic Amplified Response Spectra.Confirms Rh Leonard 800530 Telcon W/Wg Reinmuth of Revision to Final Rept date.Short-term Audit & Redesign of Containment Annular Steel Complete
ML19318A037
Person / Time
Site: Seabrook  NextEra Energy icon.png
Issue date: 06/02/1980
From: Sarsten G
UNITED ENGINEERS & CONSTRUCTORS, INC.
To:
References
REF-PT21-80-222-001 MFN-108-80, NUDOCS 8006180372
Download: ML19318A037 (4)


Text

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ATTACHED IS A PART 21 REPORT FROM IE M IL UNIT - ROOM 359E/W o

OY PART 21 IDENTIFICATION fo. 70 'A D-2 -OI COMPANY f#EJ eA DATE OF LETTER

%t/ To DOCKET to. So - W 3' DATE DISTRIBliTED 6/7/Pd ORIGINAL REPORT SUPPlRENTARY E

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DISTRIBUTION:

REACTOR (R)2 FUEL CYCLE &

SAFEGUARDS (S)C

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MTERIALS(M)

NRR/DDR, DIRECTOR (2)

AD/FFMSI-AD/SG-IE NRR/DPM DIRECTOR (2)

RES/FCMS AD/RDI AD/ROI(2)

REGIONS REGIONS

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AD/RCI IEFILES NRR/ DOR, DIRECTOR REGIONS PDR MES/SG SS-881 IEFILES LPDR PDR CBHPAL FILES CENTRALFILES-SS-396 LPDR CBERAL FILES (CHR0tD FILES (CHRON)

TEPA PDR IE FILES (2)

LPDR CEIRPAL FILES 016 W

L0EB/fPA FIB 5715 CENTPAL FILES (CHRON)

AE D - MBB-7602 CENTPALFILES-SS-396 ERPA-NB 57E AE0D ttGB-7602 LOEB#PA [HB 5715 AE0D II'l';-7602 ACTION:

PRELIMINARY EVUALATION OF THE ATTACHED REPORT INDICATES LEAD RESPONSIBILI'iY FOR FOLLOW-UP AS SHOWN BELOW:

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8006180372

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e 30 South 17th Street

'Io'IvYta Post Office Box 8223 NILADELMIA Philadelphia. PA 19101 June 2, 1980 70-@a-ooi Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Subj ect :

10CFR21 Report of Situation Related to Public Service Company of New Hampshire - Seabrook Project Ref:

C.E. Sarsten letter to Office of Inspection and Enforcement dated May 13, 1980 Gentlemen:

Tb. ; is to confirm our Mr. R.H. Leonard's telecon with Mr. W.G. Reinmuth on May 30, 1980 advising your office of a revision to the final report date of the subject report.

Details of this revision are included in the attached communication dated May 30, 1980 from the PSNH (Seabrook) Project Manager to your Region I office as a follow up to PSKl's December 6,1979 10CFR50.55(e) interim report.

Very truly y

's,

A/)n G.E.,

arsten l

cd President-Power l

Enclosure copy:

Regional Director USh7C - Region I

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U PUBUC SERVICE Companyof NowHampT.hir e SEABROOK STATION Engineering Office:

20 Turnpike Road Westborough, MA 01581 May 30, 1980 SBN-121 T.F. Q 2.2.2 U.S. Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention; Office of Inspection and Enforcement

Reference:

1.

Docket Nos. 50-443 and 50-444 2.

10 CFR 50.55 (e) Interim Report dated 12/6/79

Subject:

10 CFR 50-55 (e) Interim Report on Use of Invalid hismic Amplified Response Spectra

Dear Sir:

On December 6, 1979 we filed an interim report, Reference 2, on the subject 10 CFR 50.55 (e) deficiency, and committed to filing the final report on June 1, 1980.

The ongoing corrective action is not sufficiently complete at this time to permit preparation of the final report. We have rescheduled the filing of the final report to September 1,1980 at which time.:e will adequately respond to all findings.

The following represents the status of the actions we committed to in Reference (2).

(1)

A short-term audit of selected seismic Category I systems and components has been completed. Accepted responses to all findings have been made by project personnel.

(2)

Redesign of containment annular steel has bee. completed.

(3)

The " HOLD"'s placed on design and analysis of affected piping systems are being removed as updated Amplified Response Spectra become available.

m.

' U.S. Nucic:r Regulctrry Comminicn a

P:g; 2 SBN-121 (4)

The longer-term audit of all seismic Category I systems and com-ponents has been completed.

Responses to findings of this audit are currently being prepared.

(5)

The seismic analysis of the redesigned annular steel framing has been completed.

Generation of new Amplified Response Spectra for the steel frame is currently approximately 60% complete and is scheduled to be complete by July 18, 1980.

(6)

Review of existing analyses of Safety Class 2 and 3 piping possibly affected by the new ARS is underway as final ARS become available.

(7)

Review of seismic design requirements of other components supported by the containment annular steel frame is underway as final ARS, become available.

(8)

.A new Seabrook Administrative Procedure 36 (AP-36) - " Control of

' Seismic Design" has been prepared and issued to all (United Engineers and Constructors, Inc.) personnel involved in this aspect of the Seabrook plant design.

Two existing procedures involving the use of ARS are undergoing revision to upgrade them for closer control.

(9)

An initial training session on the use of AP-36 for all UE&C personnel who interface with ARS used on the Seabrook project will be held during the week of June 2,1980.

Should you require additional information at this time on this matter, please contact us.

Very truly yours, r

John DeVincentis Project Manager JDV tan cc: Director of Inspection and Enforcement U.S. NRC, Washington, D.C.

DNMerrill NBSturgeon Ropes & Gray GFCole (SB-9657)

NEWright DEV/WPJ - JDV last JDV FEGreenman WJMiller JHHerrin BBBeckley GThomas WAHarvey H

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