ML20065A045

Interim Deficiency Rept Re Possibility of C-E Valve Limit Switches Being Below Max LOCA Flood Level in Containment. Initially Reported on 820730.Investigation Continuing.Next Rept Expected by 821102

ML20065A045
Person / Time
Site:	Palo Verde
Issue date:	08/30/1982
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, ANPP-21722-GHD, DER-82-39, NUDOCS 8209130114
Download: ML20065A045 (5)

Text

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Docket Nos. 50-528/529/530

• - 50055(e) Report

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NWl@ MIN.78DUl$ @@TNM)

STA. 3003 -

P.o. box 21666 - PHOENIX, ARIZONA 85036 hf August 30, 1982 ANPP-21722-GHD/BSK U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, California 94596-5368 Attention: Mr. T. W. Bishop, Chief Reactor Construction Projects Branch

Subject:

Interim Report - DER 82-39 A 50.55(e) Potentially Reportable Deficiency Relating To C.E. Valve Limit Switches (Class IE) May Be Below Maximum LOCA Flood Level In Containment File: 82-019-026; D.4.33.2

Reference:

Telephone Conversation between G. Hernandez and G. Duckworth on July 30, 1982 1

Dear Sir:

The NRC was notified of a potentially reportable deficiency in the referenced telephone conversation. At that time, it was estimated that a determination of reportability would be made within thirty (30) days.

Due to the extensive investigation and evaluation required, an Interim Report is attached. It is now expected that this information will be finalized by November 2, 1982, at which time a complete report will be submitted.

Very truly yours,

( \

QQ qw E. E. Van Brunt, Jr.

APS Vice President Nuclear Projects Management ANPP Project Director EEVBJr/GHD:db Attachment cc: See Attached Page 2 8209130114 820030 l 1{ 9I PDR ADOCK 05000528 g PDR

U. S. Nuclear Regulatory Commission August 30, 1982 Attention: Mr. T. W. Bishop, Chief ANPP-21722-CHD/BSK Page 2 cc: Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.

J. A. Roedel D. B. Fasnacht G. C. Andognini A. C. Rogers B. S. Kaplan W. E. Ide J. Vorces J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiorelli Lynne Bernabei, Esq.

liarmon & Weiss 1725 "1" Street, NW Suite 506 Washington, D. C. 20006 R. L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503

l INTERIM REPORT - DER 82-39 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 1 I. POTENTIAL PROBLEM Based on design review and APS observations reported, the following Class IE Electrical Equipment is apparently installed below the maximum containment flood level (Elevation 90 feet 6 inches).

Tag No.(Valve) IE Equipment Tag No.

Item 1 SIA-UV-651 Limitorque - VMO -

Item 2 CRA-UV-506 NAMCO Limit Switch CHA-ZSH-506 Item 3 CHA-UV-506 NAMCO Limit Switch CRA-ZSL-506 Item 4 SIA-UV-682 NAMCO Limit Switch SIA-ZSL-682 Item 5 SIA-UV-682 NAMCO Limit Switch SIA-ZSH-682 The following Post-Flood Operability Requirements (DBE) apply to equipment as noted:

a. Valve Tag No. SI-651 (Item 1) and VM0 shall be operable for one (1) year post-DBE.

b. Valve Tag No. CH-506 (Items 2 and 3) shall close on CIAS signal, operate up to thirty-six (36) hours post-DBE, or fail to required closed position.

c. Valve Tag No. SI-682 (Items 4 and 5) shall operate for thirty-six (36) hours post-DBE, or fail to required closed position.

d. NAMCO Limit switches for valves CH-506 (Items 2 and 3) and SI-682 (Items 4 and 5) are required to provide valve position indication for duration of post-DBE period.

II. nPPROACH TO AND STATUS OF PROPOSED RESOLUTION Bechtel Engineering has evaluated the submergence problem, and provides the following resolution plan:

1. Item 1 - Valve Tag No. SIA-UV-651: Engineering has determined that rotation of the valve operator by 1800 will locate the motor and electrical terminations above the maximum containment flood level.

A DCP will be initiated to rotate the valve operator as shown on Attachment 1.

2. Items 2 through 5: Currently, the NAMCO Limit Switches supplied with valves CHA-UV-506 and SIA-UV-682 are series EA170 limit switches.

These limit switches are not qualified for harsh environment condi-tions above or below the maximum ficod level. Combustion Engineering recognizes this problem and recom ends that the EA170 switches be replaced with the series EA180 switches currently being qualified under the C-E Environmental Qualification Program. However,

Interim Report - DER 82-39 Page 2 submergence is not listed as a qualification requirement. A NAMCO representative indicated that the EA180 switches should have no problems qualifying for submergence in a post-LOCA environment.

Therefore, C-E will be instructed to include submergence as a post-LOCA operability requirement for qualification of NAMCO EA180 Limit Switches.

III. PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUBMITTAL OF Tile FINAL REPORT Evaluation of this condition and submittal of the Final Report is forecast to be completed by November 2, 1982.

ATTACHMENT 1 to DER 82-39 1

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