05000281/LER-1981-003-03, /03L-0:on 810106,liquid Radwaste Monitors RM-GW-101,102,RM-VG-103,104,RM-SW-107 & RM-LW-108 Failed Low.Caused by Failed Fuse.Fuse Replaced

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/03L-0:on 810106,liquid Radwaste Monitors RM-GW-101,102,RM-VG-103,104,RM-SW-107 & RM-LW-108 Failed Low.Caused by Failed Fuse.Fuse Replaced
ML18139B051
Person / Time
Site: Surry 
Issue date: 01/30/1981
From: Joshua Wilson
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139B048 List:
References
LER-81-003-03L-01, LER-81-3-3L-1, NUDOCS 8102050579
Download: ML18139B051 (2)
v • d • e


LER-1981-003, /03L-0:on 810106,liquid Radwaste Monitors RM-GW-101,102,RM-VG-103,104,RM-SW-107 & RM-LW-108 Failed Low.Caused by Failed Fuse.Fuse Replaced
Event date:
Report date:
2811981003R03 - NRC Website
v • d • e

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!With Unit 2 ouerating steady state at JQQ':/ power, BM GW JOJ,102: RM VG lQJ, JQL..;

!III] I RM-SW-107 and RM-LW-108 liquid waste rad monitors failed low.

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j4.9.C and is reportable as per T.S.6.6.2.b(4).

Abnormal procedures were initiated

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jthereby terminating the releases in progress.

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"ATTACHMENT 1 SURRY POWER DOCKET NO:

REPORT NO:

EVENT DATE:

e STATION, UNIT NO. 2 50-281 81-003/031-0 01-06-81 TITLE OF REPORT RADIATION MONITORS FAILURE

1.

DESCRIPTION OF EVENT

With Unit Two operating steady state at 100% power, RM-GW-101, 102 (process Vent Radiation Monitors); RM-VG-103, 104 (vent vent radiation monitors); RM-SW-107 (component cooling heat exchanger service water failed low.

This is contrary to T.S.4.9.C and is reportable as per T.S.6.6.2.b(4).

2.

PROBABLE CONSEQUENCES AND STATUS OF REDUNDANT EQUIPMENT:

An undetected failure of the radiation monitors could have resulted in an un-monitored release to the enviornment.

No releases were in progress except the hormal vent-vent and Process vent operation.

Applicable abnormal procedures were initiated immediately, thereby terminating the releases in progress within a short time of the monitor failure.

In addition, all releases were within Technical Specification Limits.

Therefore, the health and safety of the public were not affected.

3.

CAUSE

The monitor failures were caused by a loss of power due to a failed fuse.

The failure of the fuse appears to be end of normal life.

4.

IMMEDIATE CORRECTIVE ACTION

The failed fuse was replaced.

5.

SUBSEQUENT CORRECTIVE ACTION:

~The 'rad*iat'i-on *monitors *were verified operable.
6.

ACTIONS TAKEN TO PREVENT RECURRENCE:

Since procedures are available to cope with this type of failure, no additional action is deemed necessary.

7.

GENERIC IMPLICATION:

None.

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