05000280/LER-1980-060-03, Low Flow Alarm Indicated for RM-GW-101/102.Caused by Broken Drive Belt.Belt Replaced

Low Flow Alarm Indicated for RM-GW-101/102.Caused by Broken Drive Belt.Belt Replaced

ML18139B253
Person / Time
Site:	Surry
Issue date:	04/13/1981
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139B252	List: 05000280/LER-1980-060, Forwards LERs 81-007/03L-0,81-015/03L-0,81-018/03L-0 & Updated LER 80-060/03X-1 05000280/LER-1980-060-03, Low Flow Alarm Indicated for RM-GW-101/102.Caused by Broken Drive Belt.Belt Replaced 05000281/LER-1981-015-03, /03L-0:on 810315,PT-26.1 Revealed That Process Vent Radiation Monitor Pump Failed to Rotate.Caused by Failure of Pump Bearings.Pump Replaced 05000281/LER-1981-018-03, /03L-0:on 810318,amp Readings for Heat Tracing Panel 10,circuit 4A,were Below Acceptance Criteria Per PT-27.Caused by Excessive Heat.Defective Heat Tracing Replaced & Tested
References
LER-80-060-03X, LER-80-60-3X, NUDOCS 8104220672
Download: ML18139B253 (2)

LER-1980-060, Low Flow Alarm Indicated for RM-GW-101/102.Caused by Broken Drive Belt.Belt Replaced

Event date:
Report date:
2801980060R03 - NRC Website

text

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I Low Flow Alarm indicated for RM-GW-101/102.

No dischanzes via Process Vent System were in progress and AP 5.16 was immediately initiated (system isolation) thus the

((I1J 1* health and safety of the public were not affected.

Tech. Spec. 3.11.B.5.b applies.

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. m:IJ j Investigation showed problem to b!= a broken drive belt.

Replaced belt; pump and o:IJJ system returned to service.

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UPDATE~PORT -

PREVIOUS REPORT DATE 09~/80 ATTACHMENT 1 SURRY POWER STATION, UNIT 1 DOCKE: NO:

50-28© REPORT NO:

80-060/03X-l EVENT DATE:

08-31-80 TITLE OF REPORT:

LOW FLOW ALARM ON RM-GW-101/102

1.

DESCRIPTION OF EVENT

A Low Flow Alarm was indicated £or RM-GW-101/102.

The Process Vent System was isolated, as per AP 5.16.

Tech. Spec. 3.11.B.5.b applies, thus this event is reportable in accordance with Tech. Spec. 6.6.2.b(2).

2.

PROBABLE CONSEQUENCES AND STATUS OF.REDUNDANT SYSTEMS:

No discharges were in progress at time of failure and system was immediately isolated upon indication of the alarm.

The Health. *Physics accountabil+/-ty sample taken shortly after this occurence indicates that the releases made prior to process vent system isolation were within allowable limits.

The health and safety of the public were not affected.

3.

CAUSE OF EVENT

Investigation showed cause of failure to be vacuum pump dr.:li.ve belt.

4.

IMMEDIATE CORRECTIVE ACTION

Isolated Process Vent System as per AP 5.16.

5.

SUBSEQUENT CORRECTIVE ACTION:

Replaced broken belt, placed back in service.

6.

ACTION TAKEN TO PREVENT RECURRENCE:

None required.

7.

GENERIC IMPLICATION:

Not Applicable.