ML20011D499

Ro:On 891201,containment post-LOCA Area Radiation Monitor 1-RM-6576A Inoperable for More than 7 Days to Implement Design Change on Power Source.Plant Remained in Cold Shutdown for Duration of Equipment Outage

ML20011D499
Person / Time
Site:	Seabrook
Issue date:	12/21/1989
From:	Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-89169, NUDOCS 8912270327
Download: ML20011D499 (2)

Text

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b blew Hompshire A

Ted C. Feigenboom Senior Vice President and Chief Operating Officer NYN-89169 December 21, 1989 l

United States Nuclear Regulatory Commission Washington, DC 20555 Attention Document Control Desk

References:

Facility Operating License NPF-67. Docket No. 50-443

Subject:

Inoperability of Containment Post LOCA Area Monitor Gentlemen Seabrook Station Technical Specification 3.3.3.1, ' Radiation Monitoring for Plant Operations ' requires-that the radiation monitoring instrumentation channels for plant operations shown in Table 3.3-6 be l

OPERABLE with their Alarm / Trip Setpoints within the specified limits.

Table 3.3-6 Item 1.A requires'that two channels of the containment Post LOCA Area Monitor be OPERABLE in all modes. Contrary to this-requirement, monitor 1-RM-6576A was inoperable for a period exceeding seven days.

This radiation monitor was deenergized on December 1, 1989, to allow the implementation of a design change on its power. source. The plant-has i

remained in MODE 5.-Cold Shutdown, for the duration of this equipment outage. The monitor was returned to service on December 12, 1989.

1 This report is being submitted pursuant to the requirements of Seabrook j

Station Technical Specifications 3.3.3.1,' ACTION 27: and 6.8.2.

If you have-any questions regarding this report, please contact Mr. Richard R. Belanger i

at (603)-474-9521, extension 4048.

Very truly yours, ffh 4

Ted C. Feigenbaum 8912270327 891221 PDR ADOCK 05000443 S

PDC New Hampshire Yonkee Division of Public Service Company of New Hampshire P.O. Box 300

• Seabrook, NH 03874

• Telephone (603) 474 9521 E

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United States Nuclear Regulatory Commission December 21, 1989 Attention: Document Control Desk Page 2 I

l cc Mr. William T. Russell Regional Administrator i

United States Nuclear Regulatory Commission 1

Region I 475 Allendale Road King of Prussia, PA 19406 Mr. Victor Nerses. Project Manager Project Directorate I-3 United States Nuclear Regulatory Commission Division of Reactor Projects Washington, DC 20555 Mr. Antone C. Cerne NRC Senior Resident Inspector P.O. Box 1149 Seabrook, NH 03874 l

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