ML20056H148

Special Rept 01-93:on 930804,Deluge Sys 19 Discovered Inoperable During Surveillance Testing.Caused by Failure of Deluge Valve Due to Normal Wear.Required Fire Watches Established & Maintained Until Deluge Sys Restored

ML20056H148
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	08/30/1993
From:	Quennoz S PORTLAND GENERAL ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
01-93, 1-93, SMQ-060-93, SMQ-60-93, NUDOCS 9309080298
Download: ML20056H148 (1)

Text

.

[

f i

M M

~,

.I V

Ponland General Electric Company August 30,.1993 f

Trojan Nuclear Plant SMQ-060-93 SR No. 01-93 71760 Columbia River Hwy.

e Trojan Nuclear Plant

'{

Rainier. Oregon 97048 Docket 50-344 (503)356-3713 License NPF-3 U.S. Nuclear Regulatory Commission l

Document Control Desk Washington DC 20555 l

?

i Gentlemen:

Special Report 01-93 j

i Trojan Technical Specification (TTS) 3/4.7.9, " Penetration Fire Barriers",

requires, in part, the submittal of a Special Report if.a nonfunctional three-

.j hour fire barrier penetration protecting safety-related areas is not restored to functional status within seven days. TTS 3/4.7.8.2 requires; in part, the submittal of a Special Report if certain nonfunctional spray, sprinkler,;

l and/or deluge systems are not restored to functional status within 14-days.

On August 4, 1993, the Deluge System 19 deluge valve was. discovered inoperable

~f during surveillance testing. This system is required to be operable by TTS l

3/4.7.8.2 as it protects the electrical penetration area, and is needed for j

the electrical penetrations to function as three-hour-fire barriers as j

required by TTS 3/4.7.9.

The deluge valve failed the surveillance test due to normal wear of its internals. The TTS required fire watches were established and maintained until the deluge system was restored.-

-l Per the manufacturer's recommendation, the valve internals were replaced with the redesigned parts; however, this work was not completed until August 25, 1993.

sincerely,

'i b

l S. M. Quennoz-General. Manager l

Trojan Nuclear Plant

.l 1

)

c:

Mr. Bobby H. Faulkenberry Regional Administrator, Region V

[

U.S. Nuclear Regulatory Commission i

Mr. David Stewart-Smith State of Oregon Department of Energy Mr.

J.'F. Melfi USNRC Resident Inspector Trojan Nuclear Plant I O 9309000298 930830 if PDR ADOCK 05000344 tj S

PDR v.

4

~

r..

~..,

.