3F1197-14, Special Rept 97-03:on 971021,mid Range & High Range Noble Gas Monitors Found Inoperable Greater than Seven Days.Filter Holder Immediately re-installed

Special Rept 97-03:on 971021,mid Range & High Range Noble Gas Monitors Found Inoperable Greater than Seven Days.Filter Holder Immediately re-installed

ML20199E255
Person / Time
Site:	Crystal River
Issue date:	11/19/1997
From:	Grazio R FLORIDA POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
3F1197-14, 97-03, 97-3, NUDOCS 9711210143
Download: ML20199E255 (2)

Text

_

7 Florida Power c=tm.

c

%wmmm November 19 1997 3F1197-14

. U.S, Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001

Subject:

SPECIAL REPORT 97-03, INOPERABLE NOBLE GAS MONITORS

Dear Sir:

Please find the enclosed Special Report 97-03, witich discusses the dutails of the Mid Range 1 and High Range Noble Gas Monitors being inoperable for greater than seven days, the actions taken, and the expected date of return to service. This report is being submitted in accordance with Florida Power Corporation's Off-site Dose Calculation Manual.

Sincerely, QW( #, .

R. E. Grazio , ;-

Director Nuclear Regulatory Affairs REG /pmp Enclosure

\

xc: _ Senior Resident inspector i NRR Project Manager

~

llllj' llj' llj' lll'- l lJlJ * - 9711210143 971119 PDR ADOCK 05000302 pog S CRYSTAL RIVER ENERGY COMPLEX: is7eo w. Pow., tw som c,mm um m 3442a oros . tassi 7ss-e4as A nww. r, a-s campany )

 .t             .

4 U.S. Nuclear Regulatory Commission

                     '3F119714
                     . Page 2 EN. CLOSURE SPECIAL REPORT 97-03 MID RANGE AND HIGH RANGE NOBLE GAS MONITORS FOUND TO BE INOPERABLE GREATER THAN SEVEN DAYS This special report is being submitted in accordance with the Crystal River Unit 3 Cff site Dose Calculation Manual, Revision 22. The purpose of this report is to provide the details of the Mid Range and High Range Noble Gas Monitors being inoperable for greater than seven days, the actions taken, and the expected date of return to service.

DESEBlPl10N On October 21,1997, while performing a walkdown of the Post Accident Sampling System (PASS) for system readiness, FPC discovered that the PASS Reactor Building Purge Exhaust Mid and High Range Noble Gas Monitor, RM 1 A, was inoperable. A filter holder was not installed in the sample flow path. With the filtet removed, noble gas monitoring detectors would not be capable of performing their intended function. This system is a standby system and is placed in service when high activity is detected by the normal range noble gas monitor. The Mid Range and High Range Monitors are required to be operable during reactor building purge. The reactor building purge was in service during the time

 .                         this system was not capable of performing its function, inspection of the filter holders was not part of a periodic surveillance.

ACIlONS_TAKEN The filter holder was immediately re-installed, restoring the PASS to operable. 4 routine inspection of the PASS system to verify the filter holders are in place nas been implemented. EXPECTED 3EIURN TO SERVICE The system was returned to service on October 21,1997. _ _ _ _ . _ _- _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ -____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _}}