ML20010F849

Updated Deficiency Rept Re Potentially Reportable Condition on Soil Backfill,Compaction & Testing.Records Defining Class I Backfill Areas Backfilled After May 1976 Are Being Located.Final Rept Expected by 811215

ML20010F849
Person / Time
Site:	Columbia
Issue date:	09/01/1981
From:	Matlock R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, GO2-81-0262, GO2-81-262, NUDOCS 8109110454
Download: ML20010F849 (3)

Text

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50.55(e) Report Docket No. 50-397 Washington Public Power Supply System P.O. Box 968 3000GeorgeWashingtonWay Richland, Washington 99352 (509)372-5000 September 1, 1981 ,

G02-81 -0262 fj Q]g U l yp)

Docket No. 50-397 < # 'u m og Mr. R. H. Engelken U. S. Nuclear Regulatory Commiss%- O Region V ";

Suite 202, Walr.ut Creek Plaza 1990 North California Boulevard Walnut Creek, California 94F'

Subject:

SUPPLY SYSTEM NUCLEAR PROJECT N0. 2 REPORTABLE DEFICIENCY - 10CFR50.55(e) #146 POTENTIALLY REPORTABLE CONDITION ON S0IL BACKFILL, COMPACTION AND TESTING Your office was informed by telephone on March 20, 1981 of a potentially reportable conditun concerning soil backfill documentetion. We submitted an interim report on this condition on April 22, 1981, letter #G02-81-0083.

Attached is our updated report on this condition. We will provide another report by December 15, 1981.

If you have any questions, please contact R. T. Johnson at (509) 377-2501 extension 2712.

Very truly yours, -

N

'y R.

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. Matlock

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RGM/SLN/kh Program Director, WNP-2 3 -- )

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Attachment:

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1. Updated Report -)

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cc:

WS Chin, BPA )W ?.u;rM. , M A Forrest, HAPO G Hudak, B&R Site ND Lewis, NRC TA Mangelsdorf, Bechtel WNP-2 Files RE Snaith, B&R NY -76?7 g

V Stello, NRC AD Toth, NRC Resident Inspector, WNP ?

J Plunkett, NRC / l 8109110454 810901 PDR ADOCK 05000397 S PDR EHW 1

'3ASHINGTON PUBLIC POWER SUPPLY SYSTEM Docket No. 50-397 License No. CPPR-93 Soil Jackfill (WNP-2-PR-146)

UPDATED REPORT Description of Deficiency Soil testing for Class I backfill may have been performed incorrectly.

There appears to be a lack of documentation regarding the backfill.

Approach to Resolution of the Deficiency Intensive efforts have been expended to locate records defining Class I backfill areas backfilled after May 1976. An alternate approach requiring more comprehensive testing is being prepared in case these areas cannot be identified. A testing program will be undertaken to determine in-situ densities in those areas defined by the documentation search. The testing program will utilize indirect determination of density by standard penetration testing (ASTM-D-1586) and by penetrometer testing. When the fill is exposed in excavations, penetrometer testing will be used and where be used.

the fill is not accessible, the standard penetration testing will All the testing results will be correlated to known density values in pre-selected fill tast sections.

Status of Proposed Resolution e

i Some information information hasevaluated.

is being been received from the 215 Contractor. This e

Maps exist indicating areas where Class I fill is located.

e The 210 and 218 contractors have been requested to provide data on l

Quality Class I backfill areas and personal contact is being maintained to expedite the retrieval.

e The engineer will proceed with implementation of a test program on September 15, 1981 with all information available at that time.

l

10CFR50.55(e) #146 Updated Report page 2 of 2 Reason for Delay of Final Report Response from only one contractor has been received. Responses from the 218 contractor (F/L) and the 210 contractor (PKS) are still pendirg.

Projected Completion of Corrective Action and Submittal of Update or Final Report _

A final report or update w!11 be provided by December 15, 1981.

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