ML20205K759

Summary of ACRS 320th Meeting on 861211-13 in Washington,Dc Re New Requirements for BWR Mark I Containments in Regard to Severe Accidents & Proposal for Commission Policy Statement on Deferred Plants (SECY-86-359)

ML20205K759
Person / Time
Site:	Oconee, Oyster Creek, Byron, Pilgrim, Arkansas Nuclear, Braidwood, Surry, Diablo Canyon, 05000000
Issue date:	12/31/1986
From:	Ward D Advisory Committee on Reactor Safeguards
To:	Zech L NRC COMMISSION (OCM)
References
RTR-NUREG-01.063, RTR-NUREG-1.063, TASK-A-17, TASK-OR ACRS-SL-0329, ACRS-SL-329, NUDOCS 8704020032
Download: ML20205K759 (4)

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[ UNITED STATES fpg W8W3?

t g NUCLEAR REGULATORY COMMISSION

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g ;e ADVISORY COMMITTEE ON REACTOR SAFEGUARDS o WASHINGTON,D C.20556 December 31, 1986 Honorable Lando W. Zech, Jr.

Chaiman U.S. Nuclear Regulatory Comission -

Washington, DC 20555

SUBJECT:

THREE HUNDRED AND TWENTIETH MEETING OF THE ADVISORY COMMITTEE ON REACTOR SAFEGUARDS, DECEMBER 11-13, 1986 The Advisory Comittee on Reactor Safeguards held its 320th meeting in Washington, D.C. on December 11-13, 1986. Items considered during this meeting are sumarized below:

320TH ACRS MEETING The members discussed new requirements for BWR Mark I containments in regard to severe accidents.

The members considered the NRC Staff's proposal for a Comission policy statement on deferred plants (SECY-86-359).

Comittee coments on the subjects noted above have been sent to you.

The members discussed the NRC Staff practice of applying anticipated changes to 10 CFR Part 50, General Design Criterion 4, Environmental and Missile Design Basis, to the component supports in specific nuclear plants.

The members discussed the NRC Staff's approach for review of DOE's Final Environmental Assessments of HLW repository sites.

The members discussed the proposed final Regulatory Guide entitled

" Format and Content of Plant-Specific Pressurized Thermal Shock Safety Analysis Reports for Pressurized Water Reactors."

The members discussed the request of the NRC for public coments regard-ing the Development of a Policy for Nuclear Power Plant License Renewal.

The members discussed the regulatory position of Regulatory Guide 1.63, Revision 3, " Electric Penetration Assemblies in Containment Structures for Nuclear Power Plants."

The Comittee's coments on these subjects have been provided to the Executive Director for Operations. Copies have been sent to you.

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t i Honorable Lando W. Zech, Jr. December 31, 1986  ;

The members discussed a mechanism to discontinue preparation of the annual ACRS report to the U.S. Congress on the NRC Reactor Safety Research Program budget in preference to selected in-depth reports on specific aspects of the safety research program. A report of this discussion will be sent to the President of the Senate and the Speaker of the House. A copy has also been sent to you.

The members considered the proposed NRC Staff report on lessons learned from the accident at Chernobyl, Unit 4, and the implications for U.S.

nuclear power plants. Future discussion of this matter is scheduled during the 321st ACRS meeting.

The members continued discussion of a proposed report to you regarding the characteristics of improved light water reactors. Time did not permit completion of this matter. Future discussion is scheduled during the 321st ACRS meeting.

The members were briefed by representatives of the Office of Inspection and Enforcement and the Office of Nuclear Reactor P.egulation regarding recent operating occurrences at nuclear power plants, including drywell shell corrosion at the Oyster Creek Nuclear Generating Station; a loss of both component cooling water pumps at the Byron /Braidwood Station; high pressure injection nozzle external surface damage due to boric acid corrosion at the Arkansas Nuclear One, Unit 1; a loss of offsite power at the Pils rim Nuclear Power Station, Unit 1; a failure of a main feedwater pipe at the Surry Power Station, Unit 2; and a loss of low ,

pressure service water at the Oconee Nuclear Station, Unit 2. The Comittee was also briefed by IE on design problems at plants operating and under construction.

The Committee was briefed by R. Burnett, Director, Division of Safe-guards, NMSS, regarding security provisions at nuclear facilities. .

The Comittee met with you and the other Comissioners to discuss the status of Committee activities regarding consideration of the effective-ness of NRC Staff programs which address generic and unresolved safety issuas and Committee comments on implementation of Comission policy in areas of advanced and standardized reactor plants.

Since the last report of ACRS activities, the following subcommittee meetings have been held:

Extreme External Phenomena, in Washington, D.C. on November 20, 1986 to review the Diablo Canyon long-term seismic program and the NRC Staff's Seismic Safety Program Spent Fuel Storage, in Washington, D.C. on November 21,1986 to review a proposed revision of 10 CFR Part 72 to provide for Moni-tored Retrievable Storage of spent reactor fuel as well as interim provisions to increase storage capabilities at nuclear power plants

Honorable Lando W, Zech, Jr. December 31, 1986 1

Regional and IE Programs, in Glen Ellyn, Ill. on December 2,1986 to discuss activities of the NRC Regional Offices focusing on the.

! activities of the Region III Office Waste Management, in Washington, D.C. on December 4-5, 1986 to i

review radioactive waste management topics regarding: (1) the waste management aspects of the FY 1988 NRC Safety Research Program; (2)'

the NRC Staff's review of DOE's Final Environmental Assessment for

. the five nominated repository sites; (3) assessing compliance with

{ the EPA Standard; (4) rulemaking to confom Part 60 to the EPA i Standard for HLW repositories; (5) States' implementation of the Low-Level Radioactive Waste Policy Amendments Act of 1985; (6)

, alternatives to shallow land burial; and (7) the safety assessment ,

i of alternatives to shallow land burial a

Containment Requirements, in Washington, D.C. on December 9,1986 4 to discuss the NRR proposed generic letter on Mark I BWR contain-

{ ment requirements as well as Revision 4. BWR Emergency Procedure 2

Guidelines 4

Safety, Philosophy, Technology, and Criteria, in Washington, D.C.

! on December 10, 1986 to (1) discuss the implications of the

, Chernobyl accident, (2) discuss the NRC's proposed policy for i

reviewing reactivated license applications for deferred or canceled nuclear power plants, and (3) discuss the status of the ED0's work on the implementation of the Comission's Safety Goal Policy Safet'y Research Program, in Washington, D.C. on December 10, 1986 to discuss the following and gather infomation for use by the ACRS

! in its preparation of the annual report to the Congress on the NO Safety Research Program and budget for FY 1988: (1) proposed NRC Safety Research Program and budget for FY 1988, (2) preliminary OMB Mark and the impact of the OMB-proposed reductions on the continu-

! ing and proposed research contracts, (3) RES responses to ACRS recomendations contained in its June 11,'1986 report to the Comission, and (4) effects of the NRC reorganization on the NRC Staff and budget l

ACRS Planning, in Washington, D.C. on December 10, 1986 to discuss

! ACRS participation in radwaste management and disposal activities per memo from Chaiman Zech to the EDO dated November 5,1986 j regarding consideration of available options to provide independent

technical support of the Federally Funded Research and Development-Center for the NRC Waste Management Program; implementation of

information developed at the Wingspread meeting; review of eval-l uation by Tech Editor of ACRS reports

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Honorable Lando W. Zech, Jr. December 31, 1986 Future Agenda The following items are tentatively scheduled for consideration during the 321st ACRS meeting, January 8-10, 1987:

Meeting with EDO -- Briefing / discussion regarding NRC Staff reor-ganization Safety Goal Policy Implementation -- Briefing regarding proposed NRC implementation plan Systems Interactions -- ACRS comments requested regarding proposed resolution of ACRS May 13, 1986 comments regarding proposed resolu-tion of USI A-17, Systems Interactions in Nuclear Plants Review of Advanced BWR -- Briefing / discussion regarding ACRS parti-cipation in review of this advanced standard plant Improved Light Water Reactors -- Complete ACRS report to NRC re-garding characteristics of improved LWRs Meeting with the Director, NRR -- Discuss items of mutual interest Implications of Chernobyl Accident - ACRS comments regarding pro-posed NRC Staff report on implications of the Chernobyl accident to U.S. pover plants Safety Research Program -- Preparation of ACRS report to the NRC 1988/89 regarding (tentative )the proposed NRC safety research program for FY Sincerely, l

d ll \

David A. ard . A.)Q )-

Chairman I

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