ML20011F467

LER 90-004-00:on 900123,wide-range Gas Monitor Process Flow Rate Value for Vent Radiation Monitor Discovered at Default Instead of Actual Value.Caused by Personnel Error.Process Flow Restored & Technician counseled.W/900222 Ltr

ML20011F467
Person / Time
Site:	Seabrook
Issue date:	02/22/1990
From:	Belanger R, Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-90-004, LER-90-4, NYN-90045, NUDOCS 9003060078
Download: ML20011F467 (4)

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New Hampshire- y c, e. m Senior Vic'e President and '

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, NYN- 90045 February- 22. 1990

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United States Nuclear Regulatory Conunission Washington._DC~ 20555 Attention: Document Control' Desk. l Reference - Facility Operating License NPF-67, Docket No. 50-443' ,

Subject:

Licensee ~ Event Report (LER) No. 90-004-00: Noncompliance with i

. Technical' Specifications - Wide Range Gas Monitor. Inoperable Gentlemen:- l Enclosed please_ find Licensee Event Report (LER) No._90 004-00 for.

Seabrook' Station. -- This submittal documents an event which was: identified on

-January,24, 1990,'and'is-being' reported pursuant to 10CFR50.73(a)(2)(1).

Should.you require further information regarding this matter, please ,

contact'Mr.-Richard'R. Belanger at (603) 474-9521, extension 4048.

1 Very [ly u yours.

c4CU 40/

Ted C. Feigenbaum

Enclosures:

NRC Forms 366, 366A cc i ~ .Mr. William T. Russell ~

Regional Administrator United States Nuclear Regulatory Commission

~' Region I 1

gM; 475 Allendale Road King-of Prussia =PA 19406 vo-ye N3gl Mr. Victor Nerses, Project Manager Project Directorate I-3 8d 60-United States Nuclear Regulatory Commission Division of Reactor Projects loac Washington DC 20555 '

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$@g Atlanta, GA 30339 ,

p New Hampshire Yankee DiWsion of Public Service Company of New Hompshire I

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Noncompliance with Technical Specification - Wide Range Gas Monitor Inoperable  !

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LICENBEE CONTACT FOR THl3 LER H2}

NAME TELEPHONE NUMptR ARE A CODE Riuard R. Belanger, Lead Engineer - Compliance, Extension 4048 6mi1 4 h I 4 L 19 I s l') h COMPLETE ONE LINE FOR E ACH COMPONENT F AILURE DESCRISED IN THIS REPORT 113)

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$UPPLEMENTAL REPORT EXPECTED 114) MONTH DAY YEAR SUSMIS$10N YES lif yes, een$lete fXPfCTfD $UOMIS$10N OML) NO l l l Aa:Ti.e.CT ro.,, um a, a,,,.. w ,,, . ,. .- r-n.a , o.i On January 24, 1990, at 1:40 a.m. EST, the Wide Range Gas Monitor (WRGM) process flow rate value used to obtain the proper setpoint for the plant vent radiation monitor was identified to be at the default value, not the actual value.

Therefore the plant vent radiation monitor setpoint was not based on the actual value, contrary to the requirements of Technical Specification 3.3.3.10.

On January 23, 1990, a Chemistry Technician was requested to close out the Repetitive Task Sheet (RTS) used for.the LCO action statement for the plant vent radiation monitor. This monitor had been out of service to implement a design change. The Technician obtained a copy of the RTS but he did not obtain the procedure required for a complete task uescription. As a result, the task was not properly accomplished.

The root cause of this event has been determined to be personnel error.

There were no adverse safety consequences as a result of this event.

Corrective actions included restoring WGRM process flow, counseling the Technician and enhancing the~RTS.

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On January 24, 1990,'at 1:40 a.m. EST..the Wide Range Gas Monitor (WRGM) process'

flow rate value used to obtain the proper setpoint for the plant vent radiation monitor was= identified to be at the default value, not the actual value.

Therefore, the plant vent radiation monitor setpoint was not based on the actual-value, contrary to the requirements of Technical Specification 3.3.3.10.

-Backaround 1

The Wide Range Gas Monitor process flow monitor had been out of service for approximately six months for the implementation of Design Coordination Report- .

(DCR)88-012. On January _23, 1990, a Chemistry Technician was informed by the Control Room that this monitor was ready to become operational and requested that the Repetitive Task Sheet (RTS) used for the Limiting Condition of Operation (LCO) action statement be cleared.

The Technician obtained_a copy of the RTS and began the closecut process. The RTS-references Chemistry procedure CXO901.12. " Plant Vent Flow Rate Monitor (1-RM-FT-6577) Out of Service", and specifically directs the Technician to the procedure for 'a complete task description'. However, this procedure was not obtained by the Technician.

As a result, the task was not properly accomplished. Procedure _ Step 8.1.3 was not performed to update the WGRM data base for correct WGRM operation. Therefore, the ,

process flow remained at-the default value, not the' actual process flow value. l I

-Root-Cause- l

~The root cause of this event has been determined to be personnel error. The Technician did not obtain or use the procedure referenced on the RTS while restoring the WRGM to service.

Safety Consecuences j

There were no adverse safety consequences as a result of this event. The Wide Range Gas Monitor does not perform any safety functions and the event did not interfere or inhibit any safety-related equipment from performing its function.

In addition, the WGRM was still capable of detection and alarm functions but it was'using a default flow value rather than actual process flow. I 1

Corrective Actions 'j The WGRM process flow was restored per procedure CX0901.12 at 2:46 a.m., on ,

' January 24, 1990. A Channel Check per Technical Specification 3.3.3.10 was l performed, and the WGRM was declared operable.

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_k The Technician was counseled by department supervision and' appropriate-disciplinary action was taken. To preclude this event from recurring, the RTS has been enhanced to add a-step to verify that the monitor items are set properly.

This additional step incorporates the existing procedure requirements.

Plant Conditions

'At the time of this event, the plant was in MODE.5.

Previous events involving the WGRM have been reported via Seabrook Station ~LERs '90-001, 90-002, and 90-003.

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