05000280/LER-1982-048-03, /03L-0:on 820813,discovered That Uncollected Leakage of 2-CH-P-1C Was in Excess of Tech Spec Limit.Two Pumps Simultaneously Inoperable,Contrary to Tech Specs.Leak Caused by Loose Flange Bolt.Bolt Lubricated

/03L-0:on 820813,discovered That Uncollected Leakage of 2-CH-P-1C Was in Excess of Tech Spec Limit.Two Pumps Simultaneously Inoperable,Contrary to Tech Specs.Leak Caused by Loose Flange Bolt.Bolt Lubricated

ML20027B292
Person / Time
Site:	Surry
Issue date:	09/10/1982
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027B291	List: 05000280/LER-1982-048-03, /03L-0:on 820813,discovered That Uncollected Leakage of 2-CH-P-1C Was in Excess of Tech Spec Limit.Two Pumps Simultaneously Inoperable,Contrary to Tech Specs.Leak Caused by Loose Flange Bolt.Bolt Lubricated 05000280/LER-1982-050-03, /03L-0:on 820817,charging Pump Svc Water Low Pressure Alarm Sounded.Svc Water Pump 10B Auto Started But Did Not Restore Sys Pressure.Caused by Insufficient Npsh. Svc Water to Chiller Reduced & Pump Vented 05000280/LER-1982-081-03, /03L-0:on 820823,steam Flow Transmitter FT-1-495 Failed Low.Caused by Faulty Power Supply.Power Supply Replaced.Affected Instrument Channel Checked Satisfactorily & Returned to Svc ML20027B290
References
LER-82-048-03L-03, LER-82-48-3L-3, NUDOCS 8209200230
Download: ML20027B292 (2)

LER-1982-048, /03L-0:on 820813,discovered That Uncollected Leakage of 2-CH-P-1C Was in Excess of Tech Spec Limit.Two Pumps Simultaneously Inoperable,Contrary to Tech Specs.Leak Caused by Loose Flange Bolt.Bolt Lubricated

Event date:
Report date:
2801982048R03 - NRC Website

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• ATTACHMENI 1 f

SURRY POWER STATION, UNIT NO. 2 DOCKET NO:

50-281 REPORT NO:

82-048/03L-0 EVENT DATE:

08-13-82 TITLE OF THE EVENT: Charging Pump 1C Flange Leakage 1.

DESCRIPTION OF THE EVENT:

On August 13, 1982, with Unit 2 at full power, Operations personnel discovered that charging pump 2-CH-P-lC had developed a casing leak around a flange bolt. The leakage was measured at 350/ml/ min., which is in excess of the total allowable system uncollected leakage specified in Tech. Spec.

Table -4.11-1.

This event is contrary to Technical Specification 3.3.A.13.

When the pump was isolated and declared inoperable, and with 2-CH-P-1B already out of service, two pumps were simultaneously inoperable which is contrary to Tech. Spec. 3.2.C.1 and Tech. Spec. 3.3. A.5.

These events are reportable as per Tech. Spec. '6.6.2.b(2).

2.

PROBABLE CONSEQUENCES and STATUS of REDUNDANT EQUIPMENT:

The three charging pumps supply High Head Safety Injection flow, Reactor Coolant System makeup, and Reactor Coolant Pump Seal Injection flow. One pump is sufficient to supply 100% of the charging and safety injection requirements.

Since one pump (2-CH-P-1A) remained operable while the leak was repaired, the health and safety of the public were not affected.

3.

CAUSE

The cause of the leak was determined to be a loose flange bolt on the pump casing.

4.

IMMEDIATE CORRECTIVE ACTION

The pump was tagged out and removed from service. The bolt was removed, lubricated and reinstalled correcting the leak. The pump was returned to service in approximately two hours, which is within the time span allowed by T. S. 3.2.B. 2 and T. S. 3. 3.B. ll.

5.

SUBSEQUENT CORRECTIVE ACTION:

None required.

6.

ACTION TAKEN TO PREVENT RECURRENCE:

This appears to be an isolated event, therefore, no additional actions are deemed necessary.

7.

GENERIC IMPLICATIONS:

None.