ML20127C332

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Forwards Sser Input Re Allegation A-222,A-231,per 841106 Memo.Sser Addresses Concern 17 of 23 & Completes Allegations & Concerns Assigned
ML20127C332
Person / Time
Site: Waterford Entergy icon.png
Issue date: 11/29/1984
From: Thatcher D
Office of Nuclear Reactor Regulation
To: Crutchfield D
Office of Nuclear Reactor Regulation
Shared Package
ML20127B509 List:
References
FOIA-85-123 NUDOCS 8412130076
Download: ML20127C332 (4)
v • d • e


Text

___________ __

  • - j jog UNITED STATES y'[ g NUCLEAR REGULATORY COMMISSION g e p WASHINGTON, D. C. 20555

\.../ November 29, 1984 1

! MEMCRANDUM FOR: Dennis Crutchfield, Assistant Director j for Safety Assessment Division of Licensing, NRR  ;

FROM: Dale F. Thatcher Waterford 3 I&C Team Leader

SUBJECT:

SSER 9 INPUT The enclosed SSER Input on Allegation A-220, A-231; is provided in response to your November 6, 1984 memorandum on this subject.

This SSER addresses Concern #17 of the 23 concerns and represents the completion of the allegations and concerns assigned to the 1&C Team.

W .

Dale F. Thatcher

-.s ee? i Waterford 3 I&C Team Leader cc: w/o Enclosure N. Anderson -

Fo tA Q 3 g/2./3dh7b '

h \= $

s SSER #9 Task: Allegation A-222, A-231 ,

1. Replace the sixth paragraph of SSER #7 (starting with: "In summary....")

with the following:

As a result of the above review, the staff required LP&L to revise the procedure and to perform a reinspection program to verify the installed anchors are able to perform their intended function.

In response to the above requirement, LP&L took a number of actions as described in LP&L letter U3889-0491, dated September 28, 1984 from J. M. Cain to D. G. Eisenhut (NRR).

The six specifically identified anchor spacing violations were analyzed, taking into account as-installed loads, and the supports in question were found to be adequate to perform their intended function.

The 100% reinspection of NI instrument installations, which was initiated in response to Issue No. 1 in NRR letter dated June 13, 1984 from D. G. Eisenhut to J. H. Cain (LP&L), included criteria for the reinspection of concrete expansion anchors. The results of this reinspection are as follows: Of approximately 5500 anchors inspected, thirty-nine (39) deficiencies were discovered. Engineering evaluation of these specific cases determined that, although discretionary rework was performed in three cases, no rework would have been required for these thirty-nine supports to perform their intended function.

A generic analysis was performed, taking into account actual support configurations and ultimate loads in conjunction with conservative assumptions with respect to shear cone reduction which could be caused by

factors such as spacing violations and ungrouted holes. The results of this analysis indicate tnat, in all cases evaluated, the concrete shear cone capacity is adequate to satisfy design and installation , require-ments.

Nonconformance report W3-3316 and Corrective Action Report (CAP) 82-3-2 nad previously addressed this issue in December of 1981. At that time a reinspection of concreta anchers installed by all site contractors was performed, all appropriate personnel were retrained, and installation procedures were revised to include spacing criteria.

Mercury is no longer on site and therefore LP&L has decided not to revise procedure SP-666, however the precedure currently in use (CP-674) has been revised to include all necessary inspection criteria.

s the staff reviewed the above LP&L actions taken in response to this issue and concluded that all concerns have been adequately addressed and documented. In addition, it should be noted that the existence of CAR 82-3-2 was discovered subsequent to the original assessment of this issue. NRC review of LP&L actions taken as a result of this CAR determines that QC personnel were adequately trained in and were aware of these specific criteria. Although this CAR did not require these attributes to be specifically listed on the inspection report form as inspection points, the results of the recent reinspection effort indicates that this procedural inconsistency did not result in safety-significant installation deficiencies.

iherefore, although one could debate what " sufficient guidance" in the  !

procedure should consist of; based on the above reinspections and

_3 analyses, and in conjunction with the actions taken as a result of CAR 82-3-2, the staff concludes that the procedure was sufficient to insure that the concrete anchors were correctly installed and adequa,tely inspected.

2. Delete last paragraph (starting with: "This allegation...")

3.- Additional Action Required: None.

I 1

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