05000348/LER-1979-008-03, /03L-0 on 790216:during Review of Surveillance Test FNP-1-STP-15.0,containment Main Personnel & Emergency Air Leak Outer Doors Failed to Meet Acceptance Criteria. Leakage Probably Caused by Dirty Door Seals &/Or Seal Set

/03L-0 on 790216:during Review of Surveillance Test FNP-1-STP-15.0,containment Main Personnel & Emergency Air Leak Outer Doors Failed to Meet Acceptance Criteria. Leakage Probably Caused by Dirty Door Seals &/Or Seal Set

ML19283B771
Person / Time
Site:	Farley
Issue date:	03/14/1979
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19283B767	List: 05000348/LER-1979-007, Forwards LER 79-007/03L-0,LER 79-008/03L-0,LER 79-009/03L-0, LER 79-010/03L-0, & 79-011/03L-0 05000348/LER-1979-007-03, /03L-0 on 790212:during Review of Surveillance Test Data,Noted That RCS Leakage Test (FNP-1-STP-9.0) Had Not Been Done within Time Specified.Caused by Personnel Failure.Supervisors Instructed Re Matter 05000348/LER-1979-008-03, /03L-0 on 790216:during Review of Surveillance Test FNP-1-STP-15.0,containment Main Personnel & Emergency Air Leak Outer Doors Failed to Meet Acceptance Criteria. Leakage Probably Caused by Dirty Door Seals &/Or Seal Set 05000348/LER-1979-009-03, /03L-0 on 790216:during Plant Startup W/Reactor & Steam Generator Controls Manual & Steam Dumps in Automatic, Steam Dumps Occurred.Temp Average Reduced to 538 F.Personnel Reinstructed 05000348/LER-1979-010-03, /03L-0 on 790218:while Doing FNP-1-STP-215.1B, Steam Flow/Feed Flow Bistable (FB478A)failed to Meet Table 2-1 Trip Setpoint Valve.Caused by Bistable Setpoint Drift Below That Specified in Surveillance Test.Bistable Adjusted 05000348/LER-1979-011-03, /03L-0 on 790221:while Doing FNP-1-STP-28.7,LOSP B1F Sequencer Failed to Meet Time Requirement for Picking Up Step 6.Caused by Agastat Timer Setpoint Drift.Agastat Timer Adjusted & Satisfactorily Retested
References
LER-79-008-03L, LER-79-8-3L, NUDOCS 7903190277
Download: ML19283B771 (3)

LER-1979-008, /03L-0 on 790216:during Review of Surveillance Test FNP-1-STP-15.0,containment Main Personnel & Emergency Air Leak Outer Doors Failed to Meet Acceptance Criteria. Leakage Probably Caused by Dirty Door Seals &/Or Seal Set

Event date:
Report date:
3481979008R03 - NRC Website

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2 l During a review of surveillance test FNP-1-STP-15.0 on 2-16-79 it was discovered l

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NAME OF PREPARER W.

G. Hairston. III PHONE:

ALABAMA POWER COMPANY JOSEPH M. FARLEY NUCLEAR PLANT DOCKET NO. 50-348 ATTACIDIENT TO LER 79-008/03L-0 Facility: Joseph H. Farley Unit 1 Report Date:

3/14/79 Event Date: 2/16/79 Identification of Event Containment main personnel and emergency air lock outer doors failed to meet the acceptance criteria of Tech. Spec. 4.6.1.3.a.

Conditions Prior to Event

The unit was in mode 1 at 89% power.

Description of Event

FNP-1-STP-118.0, " Containment Airlock Leakage Test", was completed satisfactorily for both air locks on 2/16/79.

In order to declare both air locks operable, FNP-1-STP-15.0, " Containment Air Lock Door Seal Operability Test", was required to be performed satisfactorily as well.

FNP-1-STP-15.0 was performed on the main air lock at 0600, 1750 and 1840 with unsatisfactory results.

(The initial performance of this STP was marked satisfactory by the Assistant Plant Operator due to his misinterpretation of the acceptance criteria.)

FNP-1-STP-15.0 was performed on the emergency air lock at 1535 with unsatisfactory results. During the Shift Foreman review of FNP-1-STP-15.0 at 1600 on 2/16/79, it was determined that both air lock outer doors had failed to meet the acceptance criteria of Tech. Spec. 4.6.1.3.a (pressure leakage of 2 lbs. and.5 lbs.

respectively vs. no detectable leakage permitted). After cleaning tnd lubricating of both door seals, and a successful performance of FNP-1-STP-15.0 on both air locks, the doors were declared operable at 2015 and 2100 on 2/16/79.

Designation of Apparent Cause Leakage was caused by probable dirty door seals and/or temporary set in the seals caused by the immediate earlier performance of FNP-1-STP-118.0.

Performance of FNP-1-STP-118.0 requires pressurizing the air lock interior to 48 PSIG, hence the temporary set.

The temporary set is not attributable to performance of FNP-1-STP-15.0 in that the air space between the two seals on the outer doors is pressurized.

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Analysis of Event

Tech. Spec. 3.6.1.3 action statement requirements were met.

The doors were returned to an operable status within the time allowed by Tech. Spec. 3.6.1.3.

The health and safety of the public were not affected.

Effect on Plant This occurrence had no significant effect on plant operation.

Corrective Action

a.

The seals were cleaned and lubricated.

b.

The Assistant Plant Operator was instructed regarding the proper acceptance criteria in FNP-1-STP-15.0.

c.

FN STP-15.0 will be revised to clarify the acceptance criteria.

Failure Data A similar occurrence was reported in LER 78-081/03L-0.

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