05000302/LER-1978-032, Forwards LER 78-032/03L-0

Forwards LER 78-032/03L-0

ML19308D135
Person / Time
Site:	Crystal River
Issue date:	06/28/1978
From:	Stewart W FLORIDA POWER CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19308D136	List: 05000302/LER-1978-032, Forwards LER 78-032/03L-0 05000302/LER-1978-032-03, /03L-0:on 780603,interlocks on RM-A2 (Gas), Auxiliary Bldg Exhaust Monitor,Failed to Respond During SP-346,containment Penetrations Weekly Check.Caused by Faulty Control Relay in Surge Capacitor.Capacitor Renewed
References
CS-78-144, NUDOCS 8002270616
Download: ML19308D135 (1)

LER-1978-032, Forwards LER 78-032/03L-0

Event date:
Report date:
3021978032R00 - NRC Website

text

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j LEJ1LE COPY i

M 28 June 1978 M

3-0-3-a-1 ea.....r.aa CS-78-144

.a Mr. J. P. O'Reilly, Director Docket No. 50-302 U.S. Nuclear Regulatory Commission Licensee No. DPR-72 Office of Inspection & Enforcement LER No. 78-032/03L-0 230 Peachtree St. N.'4., Suite 818 Crystal River Unit #3 Atlanta, GA 30303 Occurrence Date: 03 June 1978 1

Dear Mr. O'Reilly:

Enclosed please find Licensee Event Report 78-032/03L-0 and attached supplementary infor: nation sheet, which are submitted in accordance with Technical Specification 6.9.l.9.b.

s Should there be further questions, please contact us.

Very truly yours, TQL

'4. P. Stewart Director, Power Production JC/tb Nuclear Plant' Manager l

l Attachments:

(2) i l

l 8002270[/s 8

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CRYSTAL RIVER NUCLEAR PLANT P.O. SCX 1229, CKYSTAL tiVER, FLA. 32629 g\\

1

SUPPLDENTARY INFORMATION Report No.: 50-302/78-032/03L-0 Facility: Crystal River Unit #3 Report Date: June 26, 1978 Occurrence Date: June 3, 1978 Identification of Occurrenca: No interlock response from RM-A2 (gas),

Auxiliary Building Exhaust Monitor, reported in accordance with Environmental Techn4<=1 Specification 2.4.2.G.

Conditions Prior to Occurrence: Mode 6 refueling j

1 Description of Occurrence: At 0545, Auxiliary Building Exhaust Monitor, l

RM-A2 (gas), interlocks failed to respond to a high radiation alarm during the performance of SP-346, containment penetrations weekly check during refueling operations.

Investigation by control techni-cians revealed a failed surge capacitor across K1022 relay. Grab samples were taken and analyzed on a daily basis beginning at 0600 on 3 June 1978. Operability was restored 6 June 1978.

Designation of Apparent Cause: Failure of surge capacitor across relay K1022 thus preventing interlock function.

Analysis of Occurrence: There is no hazard to the health and safety of the plant or public as daily grab samples were taken and analyzed for -

gross radioactivity. No detectable gas discharge.

Corrective Action

No corrective action necessary as a surge capacitor across relay K1022 was renewed and the system was rendered operable.

Failure Data: This is the first occurrence of an event of this type.

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