ML20214K433
| ML20214K433 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 11/21/1986 |
| From: | Wiggins J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Kister H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8612020301 | |
| Download: ML20214K433 (5) | |
Text
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NOV 211986 Docket'No. 50-293 MEMORANDUM FOR:
Harry Kister, Chief Projects Branch No. 1 FROM:
James T. Wiggins, Chief Reactor Projects Section IB
SUBJECT:
PILGRIM STATUS REPORT FOR THE PERIOD NOVEMBER 6, 1986 -
NOVEMBER 19,.1986 Enclosed is the Pilgrim bi-weekly status report from the NRC Resident Office at Pilgrim. Two NRC resident inspectors, one region based and one visiting
. resident inspector monitored routine activities at the plant during the report period. A special inspection was conducted during the period to review.the
' inadvertent isolation of the site fire water system. The reactor remained in cold shutdown throughout the period for maintenance.
These status' reports are intended to provide NRC management and the public with an overview of plant activities and NRC inspection activities.
Subsequent inspection reports will address many of these topics in more detail.
Original Signed Ey James T. Wiggins, Chief Reactor Projects Section IB 8612O20301 861121 PDR ADOCK 05000293 R
PDR OFFICIAL RECORD COPY PIL STATUS REPORT - 0001.0.0 11/29/80 :EE31 t
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T. Murley,. NRC, RI
-W.~ Kane, RI S. Ebneter,-NRC, RI T. Martin, RI-J. Partlow, NRC, IE S. Collins, RI H. Denton, NRC, NRR J. Zwolinski, NRC, NRR J.'Lydon, Chief Operating Officer, BECO L. Oxsen, Vice President, Nuclear Operations, BECO A. Pedersen, Station Manager, BECO Paul Levy, Chairman, Department of-Public Utilities Chairman, Board of Selectmen J. D. Keyes R. Bowlay Plymouth Civil Defense Director Senator Edward P. Kirby Representative Peter Forman S. M. Pollard M. Conyngham M. R.-Jeka K. R.. Anderson The Honorable E. J. Markey Public Document Room )PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
- NRC Resident Inspector Commonwealth of Massachusetts (2) bec w/ encl:
Region I-Docket Room (with concurrences)
Management Assistant, DRMA (w/o encl)
DRP Section Cheif W. Raymond, SRI, Vermont Yankee T. Shedlosky, SRI, Millstone 1&2 H. Eichenholz, SRI, Yankee R. Auluck, LPM, NRR PA0 (2)
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\\d RI:DRP Wiggins Kister 11/7k/86 11/1/86 0FFICIAL RECORD COPY PIL STATUS REPORT - 0002.0.0 11/29/80 a.
e ENCLOSURE PILGRIM STATUS REPORT FOR THE PERIOD NOVEMBER 6 - NOVEMBER 19, 1986 1.0 Plant Status As of 8:00 a.m. on November 19, 1986, the reactor was in cold shutdown with moderator temperature about 110 degrees Fahrenheit.
2.0 Facility Operations Summary The plant has been shut down for maintenance, and to make program improve-ments since April 12, 1986. The present outage will continue until April 1987 and will include refueling of the reactor.
3.0 Items of Special Interest NRC Organizational Change On November 10, 1986, Mr. James T. Wiggins assumed the responsibility as Chief, Reactor Project Section 1B, Division of Reactor Projects.
Mr. Wiggins replaces Jack Strosnider in this capacity. Mr. Strosnider has assumed duties as Chief of the Materials and Processes Section in NRC Region I.
Security Area Barrier Integrity Certain sections of the plant are designated as security vital areas.
Stringent access control measures are imposed on these locations. On November 7,1986, licensee security personnel determined that a temporary security barrier was not adequately secured and may not have prevented access to a security vital area.
The barrier in question was promptly secured and all other similar temporary barriers were inspected.
Later that day, the licensee identified a second degraded vital area access barrier.
Contractors apparently removed ductwork passing through a vital area without prior security notification, creating an opening'into the area. The NRC was notified of both occurrences.
Periodic security re-views and walkdowns of all ongoing modification activities have been instituted to prevent recurrence. Other established security measures provided additional access control to these areas.
In both of the above instances, no indications were found that the operability of equipment within or around the vital areas was adversely affected. The resident in-spectors will review the effectiveness of compensatory measures and corrective actions taken.
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Q, Fire Water System Isolation
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On November 11, 1986, the' licensee found that the normal water supply for the site fire suppression system had been inadvertently valved out of service for several days. On November 5, 1986, one of two station fire water storage tanks, the "B" tank, was drained in preparation for repairs at that time. The "A" tank, however, was inadvertently isolated from the fire water system instead of the drained "B" tank. Workers attempted to use the site fire water system to spray down the interior of the "B" tank to support maintenance work. The site electric fire pump subsequently sus-tained damage because it activated without a source of fire system water.
A second site fire pump, the diesel fire pump, also activated but was not damaged. The "A" storage tank has been returned to service, and repairs are continuing on the "B" tank and the electric fire pump. Backup fire water was available onsite in the event of an actual fire.
A special NRC inspection was conducted to review the incident as well as the general condition of the onsite fire water systems. The results of this inspection will be documented in inspection report 50-293/86-38.
Cable Insulation Deficiency Several rolls of defective electrical cable were supplied by BIW Cable Systems Inc. for use at Pilgrim.
Boston Edison and the NRC were notified by the manufacturer that the cable insulation may not perform satisfactor-ily over the life of the cable due to a manufacturing defect. Boston Edison installed approximately 18,000 feet of the suspect cable during recent modification work.
None of this installed cable is in use in active plant systems.
Boston Edison-plans to replace all defective cable.
Loss of Offsite Power at Pilgrim During periods of reactor shutdown electrical power is supplied to the station from two normal and one alternate offsite source. On November 19, 1986, at about 8:05 a.m. these offsite power sources were lost, apparently due to the severe weather conditions. Two redundant onsite emergency generators driven by diesel engines are available to supply power to im-portant station equipment. When offsite power sources were lost, both emergency diesel generators automatically started to restore vital' station power. All equipment functioned as designed with no significant problems noted.
The licensee notified the NRC of the incident and an open telecom-munications line between the NRC and the site was established. Offsite electrical power was regained at about 11:30 a.m. and the emergency diesel generators were removed from service shortly thereafter.
The NRC resident inspector was onsite and in the control room during the power loss.
In addition, a resident inspector from the Seabrook site was promptly dis-patched to Pilgrim.
Licensee investigation to determine the cause of the problem is underway and will be reviewed by the resident inspectors.
4 0FFICIAL RECORD COPY PIL STATUS REPORT - 0004.0.0 11/29/80
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4'. 0 NRC~Stafi Status During the Period Two NRC Resident Inspectors monitored plant activities between November 6, and November 19, 1986.
In addition one region based inspector and one visiting resident inspector were at the site during portions of the period. The inspection staff at Pilgrim during the report period consisted of the following:
' Martin McBride, Ph.D. --- Senior Resident Inspector Jeffrey Lyash
Resident Inspector L. Doerflein' Project Engineer T. J. Kim Resident Inspector (R. E. Ginna)
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