ML20071J439

Forwards Final Classification of ICR 5633-18 Re Pipe Support Design Calculations from Independent Design Review.Item Closed

ML20071J439
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	05/20/1983
From:	Landers D TELEDYNE ENGINEERING SERVICES
To:	Harold Denton Office of Nuclear Reactor Regulation
References
5633-69, NUDOCS 8305270001
Download: ML20071J439 (6)

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W TELEDYNE ENGINEERING SERVICES 130 SECOND AVENUE WAL. THAM, MASSACHUSETTS 02254 (617) 890-3350 TWX t710) 324-7508 May 20, 1983 5633-69 Mr. Harold Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20114

Subject:

Independent Design Review for the Shoreham Nuclear Power Station

Dear Mr. Denton:

Please find enclosed the final classification of ICR No. 5633-18 from the subject design review.

TES has received responses from LILC0 to this item originally classified as a Finding and the results of our review of this response is enclosed.

If you have any questions or comments, please do not hesitate to contact Mr. James P. King or the writer.

Very truly yours, TELEDYNE ENGINEERING SERVICES Donald anders Senior ice-President DFL/lh Enclosures D[

cc: J. A. Flaherty (TES)

J. P. King (TES)

J. H. Malonson (TES)

TES Document Control 6D-3a;L B305270001 830520 PDR ADDCK 05000322 ENGINEERS AND METALLURGISTS A PDR

[._X_I Transmittal - Please Sinn and Return Acknnwledgement

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'FTF1 FrWNE ENGNEERING SERVICES

] Request for Information (RFI)

When Requested Assign Control Number Page 1 of 1 Receipt (TES Use Only) Control No. 5633/001 Originator D. F. Landers Transmit To: H. R. Denton Project No. 5633 USNRC __

Date 5/20/83 7920 Norfolk Ave.

C'ient PO 363981 Bethesda, MD 20112 Transmitted Under Separate Cover To: M. !!illigan (LILCO)

NOTE: Furnish complete identification for items transmitted (below).

OTY TYPE ITEM IDENT NO. REV. DESCRIPTION - Title and Number of Sheets /Pages l

6 ICR 5633-18 1 l

l ACKNOWLEDGEMENT OF RECEIPT BY TITLE DATE DISPOSITION FOR PREVIOUS REVISIONS Return to TES U Mark Void l l Destroy l l Uncontrolled NDTE TO ADDRESSEE: Unless stated otherwise the listed items are furnished to you as Controlled l Documents. Please sign and return the number 2 copy to:

TELEDYNE ENGINEERING SERVICES 130 Second Avenue Waltham, Massachusetts 02?54 Attention: Document Control, Project _5M3 DISTRIBUTION: 1 and 2 - Addressee 3-Document Control 4-Orginator/ Project Manager l 1/B?

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, ENGINEERING SERVICES INDEPENDENT DESIGN REVIEW SHOREHAM NUCLEAR POWER PLANT ICR No. 5633 18, Rev.1 Date: May 20, 1983

Reference:

RRF No. 5633- 65, Rev.1 PMR No. 5633 65, Rev.1 Classification of Item: Closed

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! /eviewerSignature Q_. a.d/#

ommitteeChairmanhgnature 3.E Law:ks.

Project Manager Signature

.. "RTELEDYNE ENGINEERING SERVICES ICR No.'5533-18, Rev. 1 1.0 SUPMARY Referenced documents:

(1) TES ICR No. 5633-18 dated December 8, 1982 (2) SWEC Disposition Response Form for ICR 5633-18 dated February 2, 1983.

(3) TES ICR No. 5633-18, Additional Concern, dated March 10, 1983 (4) SWEC Disposition Response Form for ICR 5633-18, Additional Concern.

(5) TES Trip Report No. 1749 During the original review of pipe support design calculations, the TES reviewer noted that in some cases the time-history load was not properly included as part of the " Upset" design load. TheReference(1)

ICR addressed this concern.

The LILC0/SWEC response (Reference 2), indicated that although the time-history load was not included in the Normal / Upset (N/U) design load sumary, a conservative " umbrella" load combination was used, and resulting stresses were compared to the Normal condition (lowest) allow-l ables. As a result of this response, TES reviewed the method of load l combination for each support, with particular attention to how the time-history loads were considered. This review, summarized in the Reference (3) ICR, produced the following:

l (1) Out of apprcximately 21 rigid supports and snubbers, 9

. supports had N/U design loads calculated incorrectly in that I the N/U " time-history" load was not included.

1 (2) The 4 anchors which TES received to review had incorrectly -

l combined loads.

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"WTn RWNE ENGINEERINGSERVICES ICR No. 5633-18, Rev. 1 (3) The " umbrella" evaluation method was not used in each calcula-tion.

TES recommended, in the Reference (3) ICR, that all piping systems with time-history load cases be reviewed to determine if the loads were correctly considered in the pipe support calculations.

2.0 RESOLUTION The LILC0/SWEC response to the TES Additional Concern (Reference 3) is contained in Reference (4). This response reiterated the TES conclu-sion that the missing time-history loads had no effect on the pipe support designs because:

(1) The time-history loads are combined by SRSS with SRV and OBE loads.

(2) The N/U time-history loads are small.

TES has reviewed the revised calculation for the 12 supports on i system AX-10B. All calculations include the N/U time-history loads as required.

l SWEC reviewed two supports on each Category I piping model that involved time-history loads, finding no other calculations with inap-propriately combined time-history loads. Also, SWEC supervisory personnel have been made aware of this situation.

In order to assure compliance, TES randomly selected and reviewed approximately 20 of the additional piping models that involved time-history loads, Reference (5). All supports reviewed included the N/U time-history loads as required.

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. ENGINEERINGSERVICES ICR No. 5633-18, Rev. 1 TES considers the LILC0/SWEC response in Reference (4) to adequately assess the impact of this Finding. Since there is no impact on safety, this item is considered closed.

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