ML18017B231

Discusses Interim Steps Needed Prior to Issuance of OL, Pending Final Resolution of Atws.Emergency Operating Procedures Should Be Developed in Event of Atws.Nrc Evaluation May Include Site Visit

ML18017B231
Person / Time
Site:	Harris
Issue date:	09/12/1980
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Jackie Jones CAROLINA POWER & LIGHT CO.
References
NUDOCS 8009250141
Download: ML18017B231 (6)

Text

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DISTRIBUTION:

acket Files RTedesco L'B81 Rdg VNoonan SEP I 3 1980 NRR Rdg RHartfield, MPA DEisenhut OELD

'ocket Nos.:

50-400, 50-OOI

'PurPIe OIE (3) 'PA I and 50-402, 5$-403 JYoungblood JWilson bcc:

TERA MRushbrook NRC/PDR Carolina Power and Light Company PCheck L/PDR ATTN:

Mr. J. A. Jones LRubenstein NSIC Senior Vice President ASchwencer TIC 336 Fayetteville Street JMi 1 1 er ACRS (16)

Raleigh, North Carolina 27602 RVollmer DRoss Dedr Mr. Jones:

RMattson

, JKnight

SUBJECT:

INTERIMI ACTIONS NEEDED FOR 'PLANT OPERATION PENDING FINAL RESOLUTION OF ANTICIPATED TRANSIENTS WITH FAILURE TO SCRAM (ATWS)

(WESTINGHOUSE PWR)

In December 1978 the Nuclear Regu'latory Co~ission (NRC) staff issued Volume 3 of NUREG-0460 which describes the proposed type of plant modifications the staff believes are necessary to reduce the risk from anticipated transients with failure to scram (ATWS) to an acceptable level.

The NRC's Regulatory Requirements Review Committee completed its review in January

1979, and concurred with the staff's approach described in Volume 3 of NUREG-0460, insofar as it applies to your plant.

The staff has issued requests for the industry to supply generic analyses to confirm the ATWS mitigation capability described 'in Volume 3 of NUREG-0460.

Subsequently, the staff plans to present its recommendations for rulemaking on ATWS to the Cemnission.

The Commission would, by rulemaking, determine the required modifications to resolve ATWS concerns and the required schedule for the implementation of such modifications.

Your plant would, of course; be subject to the Commission's decision in this matter.

Rased on considerations described in pages 42 through 45, Volume 3 of NUREG-0460, the staff generally concluded that plants with operating licenses can continue to operate without undue risk to the health and safety of the public during the estimated 2 to 5 year period needed to implement the necessary modifications.

I However, the staff believes the following steps should be taken as a pru'dept course prior to the issuance of an operating license in order to further reduce the risk from ATWS events during the interim period before the required plant modifications as determined by the Commission are completed'.

An emergency operating procedure should be developed for an ATNN eve'nt, including consideqation of scram indicators, rod position indicators, flux monitors, pressurizer level and pressure indicators, pressurizer relief valve and safety valve position indicators, coolant average temperature, containment temperature and pressure indicators, steam generator level, pressure and flow indicators, and any other alarms (

00928n/

OFFICE P SVRNAME DATE),

NRC FORM 318 (9 76) NRCM 0240 O'U.S. GOVERNMENT PRINTING OFFICE: 1979'289 369

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SEP 1 8 1980 annunciated in the cantrol room including alarms not processed through the electrical pol"tfon of the reactor scram system.

The emergency operating procedure should be sufficiently simplified and unambiguous to permit prompt..ATHS recognition.

2.

The emergency operating procedure should describe actions to be taken fn the event of an ATMS including consideration of manually scramming the reactor by using the manual scram buttons, prompt actuation of the auxiliary feedwater system to assure delivery af the full capacity of this system, and initiation of turbine trip.

These actions must be taken fmedfately following the occurrence of the event.

Actions should also include prompt initiation of boration by actuation of the hfgh pressure safety injection system to bring the plant to a safe shutdown condition.

l<e require that you submit.your ATltS emergency operating procedure for our review.

Our review may include a visit to your plant to deterinfne the feasibility of implementing your proposed procedures through operator simulation of the steps.

Our evaluation must conclude that an acceptable procedure and operator training are completed prior to the issuance of a full power operating license.

In your letter of August 13, 1980, you stated that construction of Unit 1 of the Shearon Harris Huclear Power Plant would be complete fn June, 1984.

Your application for an operating license for Shearon Harris was tendered on June 26, 1980,and was placed fn storage.

Our environmental review is normally started 24 months prior to completion of construction and our safety review is 'normally started 33 months prior to conpletfan of canstructfon.

This includes time for review by the Advisory Committee on Reactor Safeguards and time for public hearings by the Atomic Safety and Licensing Board.

As a result, we p'lan to initiate our preacceptance review of your application.approximately 3 years prior to completion of construction for Unit 1 of the Shearon Harris Plant.

Before initiation of the acceptance review, we will send our Caseload For ecast Panel to the Shearon Harris site to review the statuq of your construction effort and verify your construction completion date.

This site visit is tentatively'cheduled for Spring of l981.

Sincerely, gi11ai Signed by

'R0b8~ I. Tcd0800 Robert L. Tedesco, Assistant Director for Licensing Division of Licensing cc:

See next page OFFICE/

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Mr. J.

A. Jones Executive Vice President

- Engineering Construction and Operations

. Caro1ina Power 5 Light Company 336 Fayettevil le Street Ral ei gh;--North Carolina 27602 CC:

George F. Trowbridge, Esq.

Shaw, Pi ttman, Potts, Trowbridge 8

Madden 1800 H Street, N.

W.

'lJashington, D.

C.

20036 Richard E. Jones, Esq.

Associate General Counsel Carolina Power

& Light Company 336 Fayetteville Street

Raleigh, North Carolina 27602 Thomas S. Erwin, Esq 115 N. Morgan Street

Raleigh, North Carolina

'27602 Alan S.'osenthal, Esq;; Chairman Atomic Safety and Licensing Appeal Board U.

S. Nuclear Regulatory Commission llashington, D.

C.

20555 Michael C. Farrar, Esq.

Atomic Safety and Licensing Appeal Board U.

S. Regulatory Commission llashington, D.

C.

20555 Dr. John, H.

Buck Atomic Safety and Licensing Appeal Board U.

S. Nuclear Regulatory Commission Mashington, D.

C.

20555 Mr. Glenn 0. Bright Atomic Safety and Licensing Board-Panel U.

S. Nuclear Regulatory Commission blashington, D.

C.

20555

-Dr. J.

V. L'eeds, Jr.

10807 Atwell Drive flouston, Texas 77096 M. David Gordon Attorney Associate =General State of North Carolina PE 0.

Box 629

Raleigh, North Carolina 27602 Ivan H. Smith, Chairman Atomic Safety and Licensing Board Panel U. S. Nuclear Regulatory Commission Washington, D.

C.

20555