ML20141J569

Forwards Test Results of Secondary Containment Lrt Per Procedure 8.7.3, Secondary Containment Leak Rate Test

ML20141J569
Person / Time
Site:	Pilgrim
Issue date:	05/20/1997
From:	Desmond N BOSTON EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BECO-LTR.97-052, BECO-LTR.97-52, NUDOCS 9705280155
Download: ML20141J569 (2)

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, Boston Edeon Pilgrim Nuclear Power Station Rocky Hill Road '

Plymouth, Massachusetts 02360-5599 I

May 20,1997 l BECo Ltr.97-052  !

l U.S. Nuclear Regulatory Commission Attention: Document Control Desk )

Washington, DC 20555 l

Docket No. 50-293 I License No. DPR-35 Secondary Containment Leak Rate Test Report A secondary containment leak rate test was completed satisfactorily on February 13,1997, prior to refueling operations for Refueling Outage No.11. This test verified Secondary Containment Inttgrity as I defined by PNPS Technical Specification (T.S.) 4.7.C.1. The test was performed per procedure 8.7.3, I

" Secondary Containment Leak Rate Test." The attachment reports the test results as required by T.S. )

6.9.C.3 (Special Report), Table 6.9.1.a. l l

If you have any questions regaiding thii. report, please contact Robert Cannon of my staff at (508) 830-8321.

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N. L. Desmond Regulatory Relations Group Manager PMK/testrpt

Attachment:

Summary of Secondary Containment Leak Rate Test Data cc: Mr. Hubert Miller Regional Administrator, Region 1 U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406

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Senior Resident inspector Pilgrim Nuclear Power Station 9705200155 970520 PDR ADOCK 05000293

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SECONDARY CONTAINMENT LEAK RATE TEST DATA TEST DATE: FEBRUARY 13.1997 TEST CONDITIONS Wind Direction 330*

Wind Velocity 4 mph Outside Temperature 27 F inside Temperature 70 F l

l BASE READING (O Flowl Reactor Bldg. Atmosphere AP (in. H2O) N. -0.17 )

E. +0.18 W. +0.00 S. +0.25 Average +0.065 Reactor Bldg. Truck Lock Reactor Bldg. Truck Lock OUTER DOOR CLOSED, OUTER DOOR OPEN, "A" SGTS PERFORMANCE INNER DOOR OPEN INNER DOOR CLOSED System Flow Rate (acceptance <4000 CFM) 3650 CFM 3640 CFM Corrected Reactor Building Atmosphere AP N: -0.765 N: -0.745 (in. H2O) E: - 0.445 E: -0.465 (Test data - average base reading = W: - 0.555 W: -0.545 corrected building AP) S: - 0.405 S: -0.395 Secondary Containment Vacuum (average) - 0.542 -0.537 (acceptance = a minimum of 1/4 in, water vacuum)

OUTER DOOR CLOSED, OUTER DOOR OPEN,

"_B:" SGTS PERFORMA_NCE INNER DOOR OPEN INNER DOOR CLOSED System Flow Rate (acoptance <4000 CFM) 3630 cfm 3600 cfm Corrected Reactor Building Atmosphere AP N: -0.685 N: -0.765 (in. H2O) E: -0.415 E: -0.465 (Test data - average base reading = W: -0.535 W: -0.565 corrected building AP) S: -0.365 S: -0.395 Secondary Containment Vacuum (average) -0.500 -0.54 /

(acceptance = a minimum of 1/4 in, water vacuum)