GO2-83-314, Interim Deficiency Rept Re balance-of-plant Board G-2 Design Error.Initially Reported on 830315.Drawing Part Lists Will Be Updated to Provide Correct Part Numbers.Next Rept Will Be Submitted by 830706

Interim Deficiency Rept Re balance-of-plant Board G-2 Design Error.Initially Reported on 830315.Drawing Part Lists Will Be Updated to Provide Correct Part Numbers.Next Rept Will Be Submitted by 830706

ML20073F182
Person / Time
Site:	Columbia
Issue date:	04/06/1983
From:	Carlisle C WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, G2-83-314, GO2-83-314, NUDOCS 8304150442
Download: ML20073F182 (2)

Text

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50.55(e) p ot P.O. Box 968 Washington Public Power Supply System,8($09)q 3000GeorgeWashingtonWay Richland, Washington 99382' Ri l: y Docket No. 50-397

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April 6, 1983 i.

G02-83-314 Mr. J. B. Martin Regional Administrator U.S. Nuclear Regulatory Commission Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596

Subject:

NUCLEAR PROJECT NO. 2 REPORTABLE 10CFR50.55(e) CONDITION #246 B0P BOARD G-2 DESIGN ERROR

Reference:

Telecon dated March 15, 1983 L. C. Floyd to J. Elin In accordance with the provisions of 10CFR50.55(e), your office was in-formed, by telephone, of the above potentially reportable condition.

Attachment I provides the Project's interim report on the above condi-tion. We will continue to provide your office with quarterly updates until resulved. The next report will be submitted by July 6, 1983.

If you have any questions regarding this subject, please contact Roger Johnson, WNP-2 Project QA Manager, (509) 377-2501, extension 2712.

~

. ar Program Director, WNP-2 LCF/jdb

Attachment:

As stated cc: W.S. Chin, BPA - Site A. Forrest, Burns and Roe - HAP 0 N.D. Lewis, NRC J. Plunkett, NRC A. Toth, NRC Resident Inspector - Site WNP-2 Files - 917B l

i C304150442 030406 '1 PDR ADDCK 05000397 '

S PDR ,

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N' ATTACHMENT I WASHINGTON PUBLIC POWER SUPPLY SYSTEM DOCKET NO. 50-397 LICENSE NO. CPPR-93 BOP BOARD G-2 DESIGN ERROR 10CFR50.55(e) CONDITION #246 INTERIM REPORT Description of Deviation A potentially reportable design error was discovered by the Architect / Engineer Burns and Roe, Inc., while checking elementary drawings for B0P Board G-2.

Board G-2 is divided into an essential Div. 2 section and a non-essential, Div. B section. General Electric (Contract 59) vendor drawing the essential instruments are ; i series numbers and the non-essential instruments are 300 series.

When General Electric (Contract 59) designed Board G-2, the IE power supply (Part #299) had a model number specified for it which is a non-IE power supply, and the non-IE power supply (Part #399) has a model number specified for it which is an IE power supply. This was a design error in which the part numbers were reversed for the IE and non-IE parts on the parts list for Board G-2. As a re-sult of this error, all of the division 2 instrument loops powered from this Board G-2 power supply are powered from a non-IE power supply.

Date of Discovery February 22, 1983.

Safety Implication Board G-2 contains a great number of the safety-related instruments and controls required for operating the Balance of Plant (BOP) of WNP-2. A loss of power to this board would present a significant hazard to the safety of operations of the UNP-2 nuclear facility. One of the many systems which would be affected is Standby Service Water (SSW). Without SSW, WNP-2 cannot be brought to a safe shutdown condition without depending on non-safety systems.

Corrective Action Site Electrical has verified that this condition does exist in Board G-2. No similar error exists in Board G-1.

The A/E is to issue a Project Engineering Directive (PED) to switch the power supplies so as to have the appropriate power supply installed in its respective application. Also, the drawing parts lists will be updated to provide the correct part numbers for the IE and non-IE power supplies.