ML20137L730

Confirmatory Action Ltr Listing Util Commitments Made During 850920 Meeting Re short-term Measures to Resolve Issue of Auxiliary Spray Capability Prior to Restart.Commitments Satisfactory.Viewgraphs from 850920 Meeting Encl

ML20137L730
Person / Time
Site:	Palo Verde
Issue date:	09/20/1985
From:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
Shared Package
ML20137L717	List: ML20137L714 ML20137L730
References
FOIA-85-696 CAL, NUDOCS 8512030519
Download: ML20137L730 (15)

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$1C o, UNITED STATES 8 NUCLEAR REGULATORY COMMISSION g ;y REGION V S +7 1450 MARIA LANE. SUITE 210 U WA LNUT CnEEK, CALIFORNI A 94596

% **..* ,o SEP 2 01985 Docket No. 50-528 CONFIRMATORY ACTION LETTER License No. NPF-41 Arizona Nuclear Power Project Post Office Box 52034 Phoenix, Arizona 85072-2034 Attention: Mr. E. E. Van Brunt, Jr.

Executive Vice President

Subject:

Return of Palo Verde 1 to Power Operations from Current Outage Gentlemen:

In my letter to you of September 17, 1985, I confirmed Arizona Nuclear Power Project's (ANPP) agreement that prior to restart of the Unit from its current shutdown, you would ensure that the issue of appropriate design criteria for the auxiliary spray system was resolved to the satisfaction of the NRC staff.

By letter dated September 18, 1985, you discussed the unscheduled shutdown of September 12, 1985 and briefly addressed NRC cencerns relating to the auxiliary spray system and interfacing equipment. In response to these concerns, you proposed certain short term compensatory measures for continued operation of the facility.

In a meeting with the NRC staff on September 20, 1985, you provided a more in-depth description of the September 12, 1985 event, including the sequence of events, design characteristics of the auxiliary spray system, and a further discussion of the short term compensatory measures for continued operation.

At the conclusion of the treeting, Mr. J. Haynes. Vice President for Nuclear Production, ANPP, committed to the following short term compensatory measures:

(1) Monitor the reference leg of the volume control tank level indicator on a daily basis. If the data obtained justify a less frequent monitoring interval, ANPP may propose a different interval to the NRC staff.

(2) Revise the appropriate procedures to require alignment of the refueling water tank to charging pump suction pronptly on loss of offsite power.

(3) Institute procedural cautions on rentart of the charging pumps.

h 9 851114 GARDE 85-696 ppa I

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(4) Examine the post-trip review process in light of the September 12, 1985 event to assure that off-normal events are adequately evaluated, particularly with respect to their potential safety significance.

(5) Examine the process for vendor reviews of the remaining power ascension tests to assure that, for equipuent particularly sensitive to the test

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being conducted, appropriate vendor input has been provided in the test development.

(6) Review the shift complement for the remaining power ascension tests to dete rmine if additional staffing may be appropriate.

On the basis of the above commitments, we are satisfied that adequate short-term compensatory measures are in place for restart of the Unit from its current shutdown. Long term measures to assure the continued reliability of the auxiliary spray system will be the subject of future correspondence.

If our understanding concerning the above measures is not correct, you should promptly notify this office in writing.

bd J. B. Martin Regional Administrator Distribution:

Standard J. Axelrad, IE ,

J. Lieberman, OELD /

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ANPP/NRC MEETING TO DISCUSS PVNGS AUXILIARY SPRAY CAPAP>lLITY AND THE STARTUP TESTING EVENT OF SEPTEMBER 12, 1985

1. INTRODUCTION J. G. HAYNES V. P. - NUCLEAR PRODUCTION II. SEPTEMBER 12, 1985 EVENT 1) R. E. GOUGE UNIT 1 DAY SHIFT SUPV.

2) D. D. SWAN UNIT 1 ASST. SHIFT SUPV.

III. AUXILIARY SPRAY DESIGN / T. F. QUAN LICENSING COMMITMENTS LICENSING SUPERVISOR IV. EVEllT EVALUATION T. F. QUAN V. CONCLUSION J. G. HAYNES V. P. - NUCLEAR PRODUCTION s

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CONDITIONS PRIOR TO EVENT OF 9-12-85

1. REACTOR AT 53% FULL POWER

2. TURBINE GENERATOR ONLINE AT 585 MWE

3. PREPARING FOR 50% LOSS OF LOAD TEST PURPOSE OF 50% LOSS OF LOAD TEST:

1. DEMONSTRATE THAT THE PLANT CAN ACCOMMODATE A LOAD REJECTION FROM 50% POWER

2. VERIFY THAT THE TRANSIENT DID NOT IlllTIATE A REACTOR POWER CUTBACK 11-1

SEQUENCE _0E_ EVENTS 2208 TEST INITIATED BY REMOTE MANUAL OPENING OF BOTH GENERATOR OUTPUT BREAKERS. (TURBINE-GENERATOR FLUCTUATIONS) 2209 REACTOR TRIP (FLOW-PROJECTED DNBR TRIP FROM CPC) 2209 TUR3INE TRIP (CAUSED BY REACTOR TRIP) 2215 NON-SAFETY RELATED AUXILI ARY FEEDWATER PLMP STARTED 2217 ATMOSPHERIC DUMP VALVES (ONE ON EACH STEAM GENERATOR)

OPENED 3%

2218 MAIN STEAMLINE DRAINS AUTOMATICALLY REOPENED UPON RESTORATION ON NON-lE ELECTRICAL POWER 2222 SIAS AND CIAS INITIATED (1837 PSIA; 540 F)

SIAS AND CIAS ACTUATIONS WERE VERIFIED AS PER DESIGN WITH HPSI INJECTING APPR0XIMATELY 75 GPM TO EACll COLD LEG 2223 NOTIFICATION OF UNUSUAL EVENT DECLARED DUE TO COMPLICATED REACTOR TRIP AND INITIATION OF A SIAS 2225 AUXILI ARY OPERATOR RE-ENERGlZED MOTOR CONTROL CENTER NHN-M-72 UNDER CONTROL ROOM DIRECTION (RE-ENERGlZED CHN UV-501, VCT OUTLET AND UV-536, RWT HIGH SlET10N TO CHARGING PUMPS.)

11-2

SEQUENCE OF EVENTS (CONT.)

2237 CHARGING HEADER LOW FLOW ALARM (40 GPM)

INTERMITTANT CHARGING HEADER PRESSURE ALARMS FOR THE NEXT 43 MINUTES, OPERATORS WERE ATTEMPTING TO REESTABLISH CHARGING PUMP SUCTION FROM:

(1) RWT HIGH SUCTION VIA CH UV 536 (2) RWT LOW SUCTION VIA CHN V 327 (3) RWT HIGH SUCTION VIA UV 532 -- BAMP CH 514 TO THE CHARGING PUMPS (AFTER NON-1E POWER RESTORATION) 2320 REESTABLISHED CHARGING FLOW WITH TWO CHARGING PLMPS INJECTING 44 GPM TO RCS 2358 RESET SIAS AND CIAS (RCS PRESSURE AND INVENTORY STABLE AND UNDER CONTROL) 0102 9/13/85 TERMINATION OF NOTIFICATION OF LNUSUAL EVENT l

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DESIGN /LICEftlING_CRLIERIA i

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CLASS 2 PLANT REQUIREMENTS -- REDUNDANT AUX SPRAY VALVE 2ND OTR, i 1981 0440.6 SUBMITTED BY THE NRC ON CESSAR/

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OlRON0 LOGY OF AUXILIARY SPRAY (CML1

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ORIGINAL AUXILIARY SPRAY CRITERIA OPERATOR CONTROL OF THE RCS PRESSURE DURING FINAL STAGES OF C00LDOWN (WHEN PRESSURE LESS THAN REQUIRED FOR RCP) AND FOR C00LDOWN OF PRESSURIZER.

CURRENT AUXILIARY SPRAY CRITERIA SAFETY GRADE PLANT C00LDOWN CONSISTENT WITH THE GUIDANCE OF BTP RSB 5-1. FOR CLASS 2 PLANTS:

o OPERATOR ACTIONS OUTSIDE CONTROL ROOM <tu a, Q o OPERATOR ACTIONS INSIDE CONTAINMENT "'G4 AFTER SSE '#'s o REMAINING AT HOT STANDBY UNTIL MANUAL ACTIONS OR REPAIRS ARE COMPLETED.

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! AUX SPRAY SYSTEM ACTIVE COMPONENTS

{ SPRAY VALVES j LOOP ISOLATION VALVES CHARGING PUMPS [ v p cp ~ 4 )

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TRANSIENT ANALYSIS OF CERTAIN SG I

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PVNGS-FSAR (APPEllDIX 15A) i SGTR ANALYSIS RESliLIji >

:SA R ESI MATED

• EVEtil IIME THY 10T1 DOSE THYRU U luSE i (SECONDS) (REM) VREM) hubKOPENADV 0 0 0 LOP 51 0 0 t kbhACT/AFFECTED)122/132 0 0 ADV OPENS 460 0 0

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ITEM 1 - LOSS OF VCT LEVEL  :

! COMPENSATORY MEASURES - MONITOR REFERENCE LEG WATER LEVEL l Ah%6y - ALIGN REFUELING WATER TANK TO  ;

CHARGING PUMP SUCTION PROMPTLY ,

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- INSTITUTE PROCEDURAL CAUTIONS "#'"'A <A t ON RESTART OF CHARGING PLEPS i

ITEM 2 - LOSS OF POWER TO CVCS VALVES (50L 536)

COMPENSATORY MEASURE - ALIGN REFUELING WATER TANK T0 i

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GOVERNMENT ACCOUNTABILITY PROJECT 1555 Connecticut Avenue, N.W., Suite 202 Washington, D.C. 20036 (202)232-8550 October 10, 1985 FREEDOM OF INFORMATION ACT REQUEST WECnw oc tPfRhTTON Director ' MT,y 5 r Office of Administration Nuclear Regulatory Commission h .g.h%

Washington, D.C. 20555 at d /0 =/S -$

To Whom It May Concern:

Pursuant to the Freedom of Information Act ("FOIA"), 5 U.S.C. 552, the Government Accountability Project (" GAP")

requests copies of any and all agency records and information, including but not limited to notes, letters, memoranda, drafts, minutes, diaries, logs, calendars, tapes, transcripts, summaries, interview reports, procedures, instructions, engineering analyses, drawings, files, graphs, charts, maps, photographs, agreements, handwritten notes, studies, data sheets, notebooks,

' books, telephone messages, comp uta tions , voice recordings, computer runoffs, any other data compilations, interim and/or final reports, status reports, and any and all other records relevant to and/or generated in connection with the loss-of-load test incident discussed in the October 2, 1985 letter to Mr. E.E.

Van Brunt, Jr., Executive Vice President of Arizona Nuclear Power Project from Hugh L. Thompson, J r. , Director of the Licensing Division of the Office of Nuclear Reactor Regulation. This includes all documents from the time of the incident itself, on September 12, 1985.

This request includes all agency records as defined in 10 C.F.R. }9.3a(b) and the NRC Manual, Appendix 0211, Parts 1.A.2 and A.3 (approved October 8, 1980) whether they currently exist in the NRC official, " working", investigative or other files, or at any other location, including private residences.

If any records as defined in 10 C.P.R. $9.3a(b) and the NRC Manual, supra, and covered by this request have been destroyed and/or removed after this request, please provide all surrounding records, including but not limited to a list of all records which have been or are destroyed and/or removed, a description of the action (s) taken relevant to, generated in connection with, and/or issued in order to implement the action (s).

1 A Y L1 - - -

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GAP requests that fees be waived, because " finding the information can be considered as primarily benefitting the general public," 5 U.S.C. 552(a)(4)(a). GAP is a non-profit, non-partisan public interest organization concerned with honest and open government. Through public outreach, the Project promotes whistleblowers as agents of government accountability.

Through its Citizens Clinic, GAP offers assistance to local public interest and citizens groups seeking to ensure the health and safety of their communities. The Citizens Clinic is currently assisting several citizens groups, local governments and intervenors in Arizona concerning the construction of the Palo Verde nuclear power plant.

We are_ requesting the above information as part of an ongoing monitoring project on the adequacy of Region V and the

. NRC's efforts to protect public safety and health at nuclear power plants.

For any documents or portions that you deny due to a specific FOIA exemption, please provide an index itemizing and describing the documents or portions of documents withheld. The index should provide a detailed justification of your grounds for claiming each exemption, explaining why each exemption is relevant to the document or portion of the document withheld.

This index is required under Vaughn v. Rosen (I), 484 F.2d 820 (D.C. Cir. 1973), cert. denied, 415 U.S. 977 (1974).

We look forward to your response to this request within ten

+ days.

Sincerely,

( NM Billie Pirner Garde Director, Citizens Clinic