ML20133L595

Expresses Concern Over Progress of Severe Accident Review of Design.Requests That Steps Be Taken to Complete Review on Schedule That Would Result in Ltr to Commission in Sept 1985

ML20133L595
Person / Time
Site:	05000447
Issue date:	08/06/1985
From:	Harold Denton Office of Nuclear Reactor Regulation
To:	Fraley R Advisory Committee on Reactor Safeguards
References
NUDOCS 8508120667
Download: ML20133L595 (4)

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[r ur o UNITED STATES NUCLEAR REGULATORY COMMISSION b :p WASHINGTON, D. C. 20555 i

? ,e August 6,1985 MEMORANDUM FOR: Raymond F. Fraley, Executive Director Advisory Committee on Reactor Safeguards FP.0M: harold P. Denton, Director Office of Nuclear Reactor Regulation SUBJCCT: GESSAR II SEVERE ACCIDENT REVIEW I an sending this memorandum to express concern over the pace at which the ACRS appears to be progressing in its severe accident review of the GESSAR II design. The GESSAR II Subcomittee has now met for a total of nine days.

These meetings have covered a nultitude of topics related to the GESSAR 11 design. Many of these topics were previously discussed during the ACRS deterministic review of the GESSAR II design. The Subcomittee meetings have been extensive in both scope and detail.

To date, the full Conmittee has met on the GESSAR II for 15 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br /> over a period of five days. During that tire only five topics had been discussed. During the June meeting, the staff was not able to complete its presentation due to the scheduling of a one-hour closed executive session. Rescheduling the executive session to allow the agenda to be completed would have alleviated the need for the staff, their censultants and GE to return to discuss the remaining agenda items. The staff and GE returned for two hours on July 12th to discuss variations of the topics from the June meeting. Due to the two-hour time constraint, th9 agenda was still not completed. This pace does not appear to be consistent vith the Commission's emphasis on standardization and it is straining the staff's resources, as well.

On June 28, 1985, the staff provided the ACRS with advance copies of SSER-4.

This supplement eddresses all of the remaining outstanding issues for the GESSAR II severe accident review euept for one--relay chatter. This supplement, which has subsequentiy been published, should enable the ACRS to complete its severe accident review of GESSAP II. The staff expects to have completed its review of relay chatter prior to the final full Conmittee meeting.

The staff understands that a one-day Subcomittee meeting on GESSAP. II has been scheduled for August 7, 1985; GESSAR II will again be considered by the full Comittee at its August meeting; and at least one more Subcommittee meeting and one more full Committee meeting will be held before the ACRS completes its CONTACT:

D. Scaletti, NRP, x29787 8508120667 850806 PDR ADOCK 05000447 F PDR

Raymond F. Fraley review of GESSAR II. In view of the extensive opportunities that the ACRS has had to review GESSAR II and the substantial demands that review is placing on the staff's resources, I request that the ACRS take whatever steps are necessary to conplete its severe accident review of GESSAR II on a schedule that would result in a letter to the Commission in September 1985.

Harold R. Denton, Director Office of fluclear Reactor Regulation DISTRIBUTION (CentreLI11e?

SSPB Peading NRC PDR L PDR DEisenhut/HDenton FMiraglia/HThompson DCrutchfield HBerkow DScaletti ti:tm eld hh, n l 07/#/85 07/ $ 85 07g 85 07q)/85 Q & /85 0(/S/85 1

w AUG 7198b Raymond F. Fraley review of GESSAR II. In view of the extersive opportunities that the ACRS has had to review GESSAR II and the substantial demands that review is placing on the staff's resources, I request that the ACRS take whatever steps are necessary to conplete its severe accident review of GESSAR II on a schedule -

that would result in a letter to the Commission in September 1985.

Harold R. Denton, Director Office of Nuclear Reactor Regulation DISTRIBUTION Central File SSPB Reading NRC PDR L PDR DEisenhut/HDenton FMiraglia/HThompson DCrutchfield HBerkow DScaletti DL b:D [ D-ti:tm DCW hfield HTh .) son D H gI7/5/85 07/ $ 85 @ T /85 08/5/85 07$ 85 07q3 /85

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Raymond F. Fraley review of GESSAR II. In view of the extensive opportunities that the ACRS has had to review GESSAR II and the substantial demands that review'is placing on the staff's resources, I request that the ACRS take whatever steps are necessary to complete its severe accident review of GESSAR II on a schedule that would result in a letter to the Commission in September 1985.

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