ML17303A217

Advises That Util Proposes to Perform Remote Shutdown Panel Test at Next Appropriate Scheduled Shutdown,However,Test Will Be Completed No Later than First Refueling of Unit 2. Unit 3 Power Ascension Testing Program Schedule Unchanged

ML17303A217
Person / Time
Site:	Palo Verde
Issue date:	01/08/1987
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Harold Denton Office of Nuclear Reactor Regulation
References
ANPP-39646-EEVB, TAC-62716, NUDOCS 8701140148
Download: ML17303A217 (5)

Text

DOCKET 0 05000529 05000530 RE('ULATQRY -

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ACCESSION,NBR: 8701140148 DOC. DATE: 87/01/08 NOTARIZED:

NQ FACIL:STN-50-529 Palo Verde Nuclear Stationi Unit 2i Arizona Publi STN-50-530 Pal o Verde Nuc lear Stat ion>

Unit 3i Arizona Pub li AUTH. NANE AUTHOR AFFILIATION VAN BRUNT> E. E.

Arizona Nuclear Pouer Prospect (formerly Arizona Public Serv RECIP. NANE RECIPIENT AFFILIATION DENTQN> H. R.

QFfice oF Nuclear Reactor Regulation>

Director (post 851125

SUBJECT:

Informs NRC Unit 2 diesel generator declared Remote shutdown capability test delayed. Mill next scheduled shutdown 5 completed no later refueling.

DISTRIBUTION CODE:

A047D COPIES RECEIVED'TR ENCL TITLE:

OR Submittal:

Inservice Inspection/Testing NOTES: Standard i z ed plant. N. Davis> NRR: 1Cg.

Standardized plant. N. Davisi NRR: iCg.

inoperable.

be c omp le+ed at than first SI2E:

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PHOENIX, ARIZONA85072-2034 Januarv 8

1987 ANPP-396413-EEVB/RAB/98.05 Office of Nuclear Reactor Regulation Attention:

Mr. Harold R. Denton, Director U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 2 and 3

Docket Nos.

STN 50-529 (License NPF-51)

STN 50-530 Testing of Remote Shutdown Capability at Palo Verde, Units 2 and 3

File: 87-056-026

References:

1)

Letter ANPP-39032 from J.

G. Haynes, ANPP, to H. R. Denton, NRC, dated November 7, 1986.

Subject:

Testing of Remote Shutdown Capability at Palo Verde, Units 2 and 3.

2)

Letter from H. R. Denton, NRC, to E. E.

Van Brunt, Jr.,

ANPP, dated October 9, 1986.

Subject:

Testing of Remote Shutdown Capability at Palo Verde, Units 2 and 3.

Dear Mr. Denton:

Reference 2

requested ANPP to perform Remote Shutdown Panel Testing on Units 2

and 3.

The reference recommended that the Unit 2 test be performed during the power ascension test

program, a future extended

shutdown, or the next refuel-ing outage.

ANPP responded in reference 1 that the test for Unit 2 would begin on January 9, 1987.

The recent failure of the Unit 3 "B" diesel generator has raised questions con-cerning the operability of the "A" diesel generator in Unit 2 since one of the connecting rods was manufactured using the same process as the failed rod in the Unit 3 diesel.

The Unit 2 diesel generator has been declared inoperable.

During a conference call held on January 7, 1987, between ANPP and NRC personnel, ANPP recommended that delaying the Unit 2 Remote Shutdown Capability Test would be prudent, since tripping the unit has a potential for emergency safety features actuation, e.g.,

Safety Injection Actuation and, Auxiliary Feedwater Actuation causing the diesel generators to start and be required to supply an emergency bus. It was determined during the discussion that it would indeed be a prudent action to delay the test, and that ANPP would propose a new schedule.

8701140148 870108 PDR kDOCK 05000529 P

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Mr. Harold R. Denton

Subject:

Testing of Remote Shutdown Capability at Palo Verde, Units 2 and 3

ANPP-39646 Page 2

ANPP recognizes the commitment made in reference l to perform the test, and we propose to complete the test at the next appropriate scheduled

shutdown, however, it will be completed no later than the first refueling of Unit 2.

This schedule is consistent with the recommended schedule contained in reference 2.

The schedule to perform the Unit 3 test during the power ascension testing program has not changed.

Very truly yours, GULL) n~

E. E.

Van Brunt, Jr.

Executive Vice President Project Director EEVB/RAB/rw cc:

0.

M. De Michele J.

G. Haynes E. A. Licitra R. P.

Zimmerman A. C. Gehr

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