ML17275A829

Requests Addl Info Re Control of Leakage from Isolation Valves in ECCS

ML17275A829
Person / Time
Site:	Columbia
Issue date:	02/12/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Ferfuson R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
References
NUDOCS 8102260779
Download: ML17275A829 (8)

Text

F<> 12 18S1 Docket No. 50-397 llashfngton Public Power Supply System ATTN:

Mr. R. L. Ferguson Managing Dfrector 3000 George Washington Way P. 0. Box 968 Richland, Washington 99352 Dist.

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LB81 Rdg DEisenhut BJYoungblood DLynch SHanauer MRushbrook RTedesco RVollmer TMurley DRoss RHartfield, MPA OELD OIE (3) bcc:

TERA NRC/PDR L/PDR NSIC TIC ACRS (16)

SUBJECT:

CONTROL OF LEAllAGE FROM THE ISOLATION YALYES IN THE ECCS In the course of our continuing review of the WNP-2 facility, we have identified a need for additional information regarding the design features in your facility which will contain leakage from isolation valves in the emergency core cooling systems.

The specfffc information sought is contained in the enclosure to this letter.

If you have any questions on this matter, please contact the Project Manager, M. D. Lynch, at (301)492-8413.

Sincerely,

~gn-g ygned by

'RDb8rt L. Todosw Robert L. Tedesco, Assistant Director for Licensing Djyision of Lj,censing cc:

See next page SX9836 0~ l5 OFFICE SURNAME/

DATE

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NRC FORM 318 IIO/80) NIPCM 0240 OFFICIAL RECORD COPY II USGPO.'980-329.824, I

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Mr. R. L. Ferguson Managing Director Washington Public Power Supply System P. 0.

Box 968 3000 George Washington Way Richland, Washington 99352 ccs:

Nicholas Reynolds, Esq.

Debevoise 5 Liberman 1200 Seventeenth

Street, N.

W.

Washington, D.

C.

20036 Richard Q. Quigley, Esq.

Washington Public Power Supply System P. 0.

Box 968 Richland, Washington 99352 Nicholas Lewis, Chairman Energy Facility Site Evaluation Council 820 East Fifth Avenue Olympia, Washington 98504 Mr. 0.

K. Earle Licensing Engineer P. 0.

Box 968

Richland, Washington 99352 Mr. Albert D. Toth Resident Inspector/WPPSS-2 NPS c/o U.

S. Nuclear Regulatory Commission P.

0.

Box 69 Richland, Washington 99352

A s

ENCLOSURE 211.212 Our position on the emergency core cooling systems (ECCS) is that these systems should be designed to withstand the failure of any single actjve or passive component without adversely affecting their long-term cooling capabilities.

In this regard, we are concerned that the suppression pool in boiling water reactors '(BWR's) may be drained by leakage from isolatio'n

. valves which may be rendered inaccessible by localized radioactive contam-ination following a postulated loss-of-coolant accident (LOCA).

Accordingly, indicate, the desian features in the WNP-2 facility which will contain leak-age from the first isolation valve in the ECCS'ines taking water (suction lines) from the suppressionpool during the long-term cooling phase following a postulated LOCA.

W 211-54

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0 REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

DOCKET ¹ 05000352 05000353 05000387 05000388 397 6

05000417 05000461 05000462 05000440 05000441 05000410 05000458 05000459 ACCESSION NBR; F ACIL:g 50 ~352 So<<353 50 387 50 388 50 397 50 416 50 "417 50 461 50+402-50~440 50 441 50 410 50 458 SO-459 50~518 50~519 50"520 50 522 50~523 so-466 50-556 5o-S57 AUTH BYNAME SHERWOODiG+G ~

RECIP ~ NAME STELLOiV~

8102250665 DOC, DATE! 81/02/06 NOTARIZEDs NO Limerick Gener ating Statfoni Uni t. ii Phi 1 ada 1 phf a, El e Limer i ck Gener ating Stat) on, Unf t 2i Phi 1 ada 1 phi a El c Susquehanna Steam Electric Stationi Unft ii Pennsylva Susquehanna Steam Electric Stationi Unit 2i Pennsylva WPPSS Nuclear'rojccti Unit 2i Washington Public Powe Grand Gulf Nuclear Stationi Unft ii Mississippi Power Grand Gulr Nuclear.Stationi Unit Zi Mississippi Power Clinton Power Statfoni Unit ii Illinois Power Co ~

Clinton Powet Stationi Unit 2i Illinois Power Co, Pert y Nuclear Power Planti Unf't 1i Cleveland Electric Perry Nuclear Power Planti Unit Zi Cleveland Electric Nine Mfle Point Nuclear Stationi Unit 2i Niagara Moha River Bend Stationi Unit ii Gulf States Utilftfes Co.

River Bend Stationi Unit Zi Gulf States Utilities Co ~

Har tsvflle Nuclear Planti Unit ii Tennessee Valley 05000518 Hartsville Nuclear Planti Unit 2iTennessee Valley A

OS000519 Hartsville Nuclear Planti Unit 3i Tennessee Valley 05000520 Skagft Nuclear Planti Unit ii Puget Sound Power 5

L 05000522 Skagit Nuclear Power PIojecti Unit 2i Puget Sound P

05000523 Aliens Creek: Nuclear Stationi Unit ii Houston Lightin 05000466 Black Fox Stationi Unit ii Public Service of Oklah 05000556 Black Fox Stationi Unit 2i Public Service of Oklah 05000557 AUTHOR AFFILIATION General Electric Co ~

RECIPIENT AFFILIATION Director 's Offfcei Office of Inspection and Enforcement

SUBJECT:

Deficiency rept r e implementation of defective grounding of flexible cond control complex equipmentior iginally Schedule for implementation submftte corrective action re uit fn power generation reported 801208 '

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ENCL SIZE:

DISTR IBUT I'ON.CODE::

Hoo'1 S

.<COPIES "RECEI'VED t L'TR TITLE:

DCD Material 50 52,1 Hartsvill.e hucl.ear:PlantiUnft 4,i Tennessee Valley A

05000521 50 553 Phipps Bend nuclear StatfoniUnit ii Tcncssae Valla 05000553 50 554 Phipps Bena Nucl'ear Planti Unft Zi Tennessee Valle 05000554 NOTES:Send ILE 3 copies FSAR 8 all Send I8E 3 copies FSAR 8 all PM:

2 cop.ies of all mater ial M Cunningham (MNBB):

1 copy M.Cunningham (MNBB): 1'ony LPDRs;2 ~

LPDRs:2 ~

Standardized Plant+

Aux Sys Standardized Plant; Aux Sys Standardized Plant-,

Aux Sys Standardized Plant

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Plant, Standardized Plant

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COPIES I.TTR ENCL RECIPIENT ID CODE/NAME COPIES LTTR ENCL INTERNAL: NRC PDR 02' REG FILE 01

0 EXTERNALS LPOR 03 NSIC 00 TOTAL NUMBER OF COPIES REQUIRED; L TR P

ENCL 0

GENERAL

ELECTRIC NUCLEAR POWER GENERAL ELECTRIC COMPANY. 175 CURTNER AVE.. SAN JOSE, CALIFCRNIA95125 MC 682, (408) 925-5040 A

SYSTEMS DIVISION TRR-10-81 MFN-019-81 February 6, 1980 U.

S. Nuclear Regulatory Commission Washington, D.C.

20555 Attention:

Mr. Victor Stello, Jr., Director Office of Inspection and Enforcement Gentlemen:

Reference:

REPORTABLE CONDITION, GROUNDING OF FLEXIBLE CONDUIT Letter from Glenn G.

Sherwood to Victor Stello, same

subject, 12/22/80 (MFN-216-80)

The reference letter advised you that an action plan to effect corrective action of the defect reported to you on December 8, 1980 would be forwarded to you by January 31, 1981.

The defect is inadequate grounding of some flexible conduit in Power Generation Control Complex (PGCC) equipment shipped to customers.

The schedule for implementing the corrective action is:

1)

July 3, 1981.

Issue "Correcting Field Instructions" for the addition of ground straps to affected flexible conduit on shipped plants; i.e., Limerick 1

and 2, Susquehanna 1 and 2, Hanfor d 2, Grand Gulf 1

and 2, Clinton 1

and 2, Perry 1

and 2'.

2)

June 30, 1981.

Issue a grounding requirement document applicable to those plants in the.design and manufacturing cycle; i.e.,

Nine Mile Point 2, River Bend 1

and 2, Hartsville Al, A2, Bl, B2; Phipps Bend 1

and 2, Skagit 1

and 2, Aliens Creek, Black Fox 1 and 2.

Very truly yours, Gle n G.

She

ood, Manager Nuclear Safety.8 Licensing Operation GGS: rm/2A cc:

B.

H. Grier, Region I J.

P. O'Reilly, Region II J.

G. Keppler, Region III U. Potapovs, NRC Region IV R.

H. Engelken, Region V

PRC File