ML17303A990

Provides Proposed Changes to Previously Acceptable Commitments Re Reactor Coolant Pump Shaft Vibration Monitoring Program,Including Reducing Number of Required Monitoring Channels Per Pump from 2 to 1

ML17303A990
Person / Time
Site:	Palo Verde
Issue date:	03/25/1988
From:	Licitra E Office of Nuclear Reactor Regulation
To:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
References
TAC-67519, TAC-67520, TAC-67521, NUDOCS 8804050097
Download: ML17303A990 (6)

Text

March 25, 1988 Docket Nos.:

50-528, 50-529 and 50-530 DISTRIBUTION f Docket File

'-NRG-5-Local-PDRs

" PD5 Reading 0GC-l<F DMCrutchfield GMHolahan GMKnighton EALicitra flJDavis Mr. E.

E.

Van Brunt, Jr.

Executive Vice President Arizona Nuclear Power Project Post Office Box 52034 Phoenix, Arizona 85072-2034

SUBJECT:

PROPOSED REVISED CONDITIONS FOR RCP SHAFT VIBRATION MONITORING PALO VERDE, UNITS I, 2 AND 3 (TAC NOS. 67519, 67520 AND 67521)

TMarsh PTKuo JRichardson LShao EJordan JPartlow ACRS (10)

JLee By letter dated March 18, 1988, you submitted an application for proposed amendments to the operating licenses for Palo Verde, Units 1, 2, and 3, to revise the conditions relating to vibration monitoring of the RCP shafts.

The request would revise the current conditions in the Unit 2 and 3 licenses and incorporate the proposed conditions into the Unit 1 license.

The requested amendments include the following proposed changes to your previously acceptable commitments relating to the RCP shaft" vibration monitoring program.

(1)

Reduce the number of required monitoring channels per pump from 2 to 1.

(2)

Allow continued plant operation for at least 7 days when the monitoring capability on any RCP shaft is lost, and allow continued operation beyond that by using some other undefined monitoring capability.

(3)

Remove the engineering requirement from the qualified individual who performs evaluations of vibration data.

(4)

Delete the requirement for a plant shutdown upon reaching a vibration reading of 10 mils or greater on an RCP shaft if the reading is known to be caused by other than a cracked shaft.

No other shutdown requirements are proposed for excessive vibration on such a

pump.

(5) If shutdown of the plant is required, reduce the shutdown level from Mode 5 to Node 3.

(6)

Remove the requirement to extrapolate trending data if the cause of increasing shaft vibration is unknown.

(7)

Other changes to the commitments such as qualifying the requirement for orbital monitoring to when its available.

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We have reviewed your proposed changes and find that they are unacceptable because they represent a significant reduction in, the safeguards against RCP shaft failure during plant operation that were previously determined to be necessary for public health and safety'.'herefore, we plan to take no further action on your triarch 18, 1988 submittal.

We will continue to act on your triarch 2, 1988 amendment request to include into the Palo Verde Unit I license the same RCP shaft monitoring conditions currently in the Palo Verde Unit 2 and 3 licenses.

If you have any questions regarding this letter, please let me know.

Sincerely, original signed by E. A. Licitra, Senior Project Nanager Project Directorate V

Division of Reactor Projects - III',

IV, V and Special Projects DRSP/P EALicitra:vr B 4&88 D

PDV ighton Marsh

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Mr. E.

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Van Brunt, Jr.

Arizona Nuclear Power Project Palo Verde CC:

Arthur C. Gehr, Esq.

Snell 8 Wflmer 3100 Valley Center Phoenix, Arizona 85073 Mr. James M. Flenner, Chief Counsel Arizona Corporation Commission 1200 West Washington Phoenix, Arizona 85007 Charles R. Kocher, Esq. Assistant Council James A. Boeletto, Esq.

Southern California Edison Company P. 0.

Box 800

Rosemead, Cal ffornfa 91770 Mr. Mark Ginsberg Energy Director Offfce of Economic Planning and Oevelopment 1700 West Washington - 5th Floor Phoenix, Arfzona 85007 Mr. Wayne Shirley Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Mr. Tim Polich U.S. Nuclear Regulatory Coomission P. 0.

Box 97 Tonopah, Arizona 85354-0097 Regional Administrator, Region V

U. S. Nuclear Regulatory Comaissfon 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Kenneth Berlin, Esq.

Winston 5 Strawn Suite 500 2550 M Street, NW Washington, OC 20037 Ms. Lynne Bernabei Government Accountabi 1 ity Project of the Institute for Policy Studies 1901 Que Street, NW Washington, OC 20009 Mr. Ron Rayner P. 0.

Box 1509

Goodyear, AZ 85338 Mr. Charles B. Brfnkman, Manager Washington Nuclear Operations Combustion Engineering, Inc.

7910 Woodmont Avenue Suite 1310

Bethesda, Maryland 20814

Chairman Arizona Corporation Comnfssfon Post Office Box 6019 Phoenix, Arizona 85003 Arizona Radiation Regulatory Agency ATTN:

Hs. Clara Palovfc, Lfbrarfan 4814 South 40 Street Phoenix, Arizona 85040 Mr. Charles Tedford, Director Arizona Radiatfon Regulatory Agency 4814 South 40 Street Phoenfx, Arizona 85040 Chairman Marfcopa County Board of Supervisors ill South Third Avenue Phoenix, Arizona 85003