05000277/LER-1990-001, :on 900124,shift Surveillance Log Did Not Meet Requirements of Tech Specs.Caused by Deficient Procedure. Surveillance Log Revised to Include Daily Instrument Check

:on 900124,shift Surveillance Log Did Not Meet Requirements of Tech Specs.Caused by Deficient Procedure. Surveillance Log Revised to Include Daily Instrument Check

ML20042F958
Person / Time
Site:	Peach Bottom
Issue date:	05/07/1990
From:	Franz J, Fulvio A PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-90-001, LER-90-1, NUDOCS 9005100223
Download: ML20042F958 (4)

LER-1990-001, on 900124,shift Surveillance Log Did Not Meet Requirements of Tech Specs.Caused by Deficient Procedure. Surveillance Log Revised to Include Daily Instrument Check

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(1)
2771990001R00 - NRC Website

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n < g PHILADELPHIA ELECTRIC COMPANY PEACil llCirTOM AIDMIC POWER STATION R. D.1, llox 208 Delta, lYnnsylvania 17314

. ruce mornm-me rowia or excnuncs (717) 456-7014 I

1 May 7, 1990

.j Docket No. 50-277 Docu;nent Control Desk l

U S. Nuclear Regulatory Commission Washington, DC 20555

SUBJECT:

Licensee Event Report Peach Bottom Atomic Power Station - Unit 2 This LER concerns a daily instrument check that was not being performed as 4

required by Technical Specifications. This LER has been revised to provide l

the results of a review of previous similar events.

i

Reference:

Docket No. 50-277 Report Number:

2-90-001 Revision Number:

01 Event Date:

01/24/90 Report Date:

05/07/90 Facility:-

Peach Bottom Atomic Power Station

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RD 1, Box 208, Delta, PA 17314 i

l This LER is being submitted pursuant to the requirements of 10 CFR 50.73(a)(2)(i)(B).

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Sincerely, I

Plant Manager cc:

J. J. Lyash, USNRC Senior Resident Inspector T. T. Martin, USNRC, Region I

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c,,o,.~,-,o n ei On January 24, 1990, it was discovered that the daily instrument check of the main stack flow rate monitor was not being performed as required by Technical Specification (TS) 4.8.C.4.b.

The cause of this event was an incomplete procedure which occurred as a result of an inadvertent omission of this instrument check during a comprehensive revision to the shift surveillance logs. No actual safety consequences occurred as a result of this event. The shift surveillance log ST 9.1-3Z was revised to include the daily instrument check. A systematic review of TS required instrument checks has been performed to ensure TS requirements are being I adequately addressed. This event has been reviewed with the appropriate procedure I writers and the ST sponsor involved. There were three previous similar LERs.

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Requirements'for the Report This LER is being submitted pursuant to 10 CFR 50.73(a)(2)(1)(B) because a surveillance required by Technical Specifications (TS) was not being performed.

Unit Status at Time of the Discovery of the Event Unit 2 was in the Run Mode at 100% rated thermal power.

Unit 3 was in the Run Mode at 100% rated thermal power.

There were no structures, components, or systems that were inoperable at the start of l

the event that contributed to the event.

l Description of the Event On January 24, 1990, at 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br /> while performing a review of TS required _

instrument checks, it was discovered that the daily instrument check of the main stack flow rate monitor (Ells: MON) was not being performed as required by TS

.4.8.C.4.b.

The main stack flow rate monitor instrument is common to both units 2 and 3.

Prior to an October 14, 1989 revision of an operating shift surveillance log, this parameter was being logged daily.

Cause of the Event

The cause of this event was an incomplete procedure which occurred as a result of an inadvertent omission of this instrument check during a comprehensive revision to the I shift surveillance logs due to a personnel error by the Surveillance Test Sponsor.

Revision 15 of Surveillance Test (ST) 9.1-3Z (one of the shif t surveillance logs) contained a step requiring an instrument check of the main stack flow rate monitor.

- but it had been deleted by revision 16 dated October 14, 1989.

The operating shift surveillance logs under went an extensive revision prior to Unit a

3 restart (November 1989). The procedures were extensively reformatted to improve human factors (i.e., rearranged to better coordinate the instrument order list in-the ST with the outlay of Control Room instruments), and the procedures were revised to incorporate the labeling enhancements made during Control Room modifications.

The daily check of the main stack flow rate monitor was inadvertently omitted from ST 9.1-3Z during this revision.

Analysis of the Event

No actual safety consequences occurred as a result of this event.

Although the main stack flow rate monitor was not included on the shift log surveillance test, this instrument has a history of being reliable and functioning properly. Additionally, ST 7.6.1.J " Determination of Total Noble Gas Release Rate"

.uses the main stack flow as read from the main stack flow rate monitor in determining g,0x. a.

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EXP6RES-S'3U98 9 ACiplT] ff4% 11)

DOCKET NUMBER 82)

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v..=.nw w we i = sasa w me the total noble. gas release rates in site gaseous effluent.

The total noble gas release rate calculation 1s performed on average five times each week. Although the i

daily instrument check had not been performed since November 1989, routine performance of ST 7.6.1.J demonstrated that the main stack flow rate monitor was operational.

Corrective Actions

On February 1, 1990, the operating shift surveillance log ST 9.1-3Z was revised to include the daily instrument check.

From January 24, 1990 to February 1, 1990 the daily instrument check of the main stack flow rate monitor was performed during ST 7.6.1.J.

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A systematic review of the shift surveillance logs has been conducted to ensure operating and shutdown TS required instrument checks are included.

No additional l discrepancies were identified. This event has been reviewed with the appropricte l procedure writers and the ST Sponsor involved.

Previous Similar Events

Three previous LERs were identified, LERs 2-88-18, 2-88-27, and 2-89-01 in which TS requirements were not met due to procedural inadequacies which resulted from a previous test revision.

Part of the corrective actions associated with a root cause evaluation, which was performed as a result of these three LERs was to assign a sponsor for each ST procedure. Additionally, Administrative (A) Procedure A-47

" Surveillance Test Procedures" was revised to administrative 1y control the sponsor's responsibility during review of ST revisions.

l An-investigation has been performed to determine why these corrective actions did not l prevent this event.

A-47 requires an ST sponsor to verify that Technical l Specification surveillance requirements are not jeopardized by an ST revision.

In I this event the sponsor failed to meet this requirement by not adequately comparing l the new revision to the old revision.

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