ML18086B616

Forwards Summary of Responses to NRC 820720 Request for Addl Info Re Auxiliary Feedwater Pump Endurance Test,As Discussed in 820818 Conference Call

ML18086B616
Person / Time
Site:	Salem
Issue date:	08/18/1982
From:	Liden E Public Service Enterprise Group
To:	Varga S Office of Nuclear Reactor Regulation
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.E.1.1, TASK-TM NUDOCS 8208250097
Download: ML18086B616 (2)

Text

PS~G Public Service Electrifa:;,ci Gas q9rr.pany 80 Park Plaza, Newark, NJ 07101 / 201 430-7000

• MAILING ADDRESS/ PO. Box 570, Newark, NJ 07101 August 18, 1982 Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing

u. s. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, MD 20014

Dear Mr. Varga:

NUREG 0737, ITEM II.E.1.1 AUXILIARY FEEDWATER SYSTEM EVALUATION SALEM GENERATING STATION UNIT NOS. 1 AND 2 DOCKET NOS. 50-272 AND 50-311 Your letter dated July 20, 1982 identified three items of concern for which additional information was requested. In response to your request, a conference call with Mr. Robert Gramm of the NRC Auxiliary Systems Branch was held on August 17, 1982. We feel that the information supplied during the conference call has satisfied the areas of concern and we have adequately responded to the Auxiliary Feedwater pump endurance test recommendation.

Attached is a summary of our responses to the items listed in your letter. If you should have any additional questions, we will be pleased to discuss them with you.

Very truly yours,

/

E/ iden, Manager

,Nuclear Licensing and

//Regulation

• Attachment CC Mr. Leif Norrholm Sr. NRC Resident Inspector - Salem Mr. William J. Ross NRC Project Licensing Manager- Salem a2oa2soo97--a2oai8 - --

PDR ADOCK 05000272 P PDR The Energy People 95-2001 (400M) 10-81

...7 ....

ATTACHMENT

• A,ugus.t 18, 19 82 SALEM GENERATING STATION AUXILIARY FEEDWATER PUMP 4 8-HOUR ENDURANCE TESTS

1. The Public Service Electric & Gas Company Auxiliary Feedwater Pump (AFP) endurance test procedure contained a PRECAUTIONARY limit on bearing temperatures of 170°F. The control room alarm setpoint is l80°F. Vendor recommendations are 185°F -

ALARM and 194°F - STOP PUMP.

2. The PSE&G AFP endurance test procedures* contained a PRECAUTIONARY vibration limit of 1 mil. This is not, and was not identified in the procedure as a design limit. We use the Hydraulic Institute Standards manual guidelines for both pump and

• motor vibration. In this manual, vibration of 2 mils. or less are acceptable levels of.operation for the AFP's.

The personnel who monitored and recorded pump data were shift operating personnel who routinely perform pump vibra-tional surveillance testing and had received instructions on the job in *the proper use of IRD vibration measurement equipment. While the test personnel were not considered to be "vibration analysis technic~ans" for data recording purposes, shift supervision and test engineers were available

.to interpret the data. The discontinuities in vibration readings were not accompanied by higher bearing temperatures and were within acceptable lev'elso Accordingly, the pumps were allowed to run and were considered acceptable.

3. 'J:'he :motor vibrations, .noted as "rough" in the Danak to Ber:r;ick. memorandum, actually fall predominantly in the 11 slightly rough 11 range of the IRD chart. Subsequent operation and surveillance testing of the Unit 1 AFP's have not indicated any cause for concern.* The Unit 1 Auxiliary Feedwater pumps and motors have required no bearing maintenance or replacement since the completion of the endurance test. As a point of information, #21 AFP outboard pump bearing experienced a high temperature alarm roughly ten months* after the Unit 2 endurance tests; the necessary repairs were made and the J?Ump returned to service.

The Station Operations Review Committee (SORC) reviewed the test package, which included the Danak to Berrick memorandum, and determined that other than continued surveillance, no additional review by our Energy Laboratory was required and that the concern of the memo raised no unreviewed safety questions.