ML20236D549
| ML20236D549 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 07/21/1987 |
| From: | Wiggins J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Collins S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8707300518 | |
| Download: ML20236D549 (5) | |
Text
.,;
1 V
lJUL 211987 Docket No. 50-293 MEMORANDUM FOR:
Samuel J. Collins, Deputy Director
' Division of Reactor Projects l
FROM:-
James T. Wiggins, Chief.
I Reactor Projects Section IB l
o
SUBJECT:
PILGRIM STATUS REPORT FOR THE PERIOD JULY 1, - JULY 15,1987 Enclosed is the Pilgrim bi weekly status report from the NRC Resident Office-at Pilgrim.
Three 'NRC resident inspectors and four region-based specialist inspectors monitored activities at the plant during the report period.
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.
i l
James T. Wiggins, Chief Reactor Projects Section 1B
Enclosure:
As' stated 1
1 i
8707300518 870721 PDR ADOCK 05000293
\\\\
R pon j
15-28 l
1 0FFICIAL RECORD COPY PILGRIM BI-WEEKLY STATUS RPT - 0001.0.0 4
07/16/87
?
.-__- - _ O
=
~~~ ~
g 7 -
r-
.,1 3 fap 4
,2>
v.
Q' jfMemorandum.forSam'uelJLCollins;
~2 b'
=cc'w/ enc 1:.
P W. :l Russell ~, RI '
'.WL Kane,i RI
..W;lJohnston, RI';
.,T.
Martin,:RI-..
.J.;Partlow, NRR; lS. Varga,.NRR:
' T/Murley, NRR B. -'Boger,~ NRR :
- R. Wessman, NRR'
)
Wi D. Paton', OGC, NRC-
'R.. Bird, Senior-Vice President-Nuclear, BECo
-K. RobArts, Station. Manager, BECO Paul; Levy, Chairman, Department'of Public Utilities Chairman,-Board of_ Selectmen.
'J.:D. Keyes
'RM Boulay
. Plymouth. Civil Defense-Director
' Senator Edward P..Kirby1 Representative Peter Forman
,5S.
M.~ Pollard
.M.
Conyngham
- M. R.'Jeka-K.,R. Anderson-The Honorable E. J..Markey.
_M..D. Ernst, Committee on. Energy, Commonwealth of Massachusetts.
'Public Document Room (PDR) o'
' Local Public Document Room (LPDR)
, Nuclear: Safety,Information Center (NSIC)
'NRC Resident Inspector Commonwealth of Massachusetts (2)'
bec w/ enc 1:
Region I Docket Room (with concurrences)
Management Assistant; DRMA (w/o enc 1)
DRP'Section Chief PA0;(2)-
1 RP /
I RIiDRP' RI:DRP McBride/mjd Wiggins C 1 6s
-7M/87 7/9/87
/ZM/87:
OFFICIAL RECORD COPY PILGRIM BI-WEEKLY STATUS RPT - 0002 0.0 07/16/87 l
l y
-Q
G, ;' ';
\\
7 k
1 p
1 1
' ENCLOSURE-PILGRIM STATUS' REPORT: FOR THE PERIOD JULY l', - JU[YL 15,- 1987 11.0 -Plant Status
'As of 8:00 a'.m. on July 1, 1987, spent fuel p'ool' temperature was about.70 degrees Fahrenheit ~. All fuel has been removed from the' reactor vessel and 1
transferred to the spent fuel pool.-
. 2.0 Facility Operations' Summary The f plant has been shutdown for maintenance and to make program improve-ments since April ' 12, 1986.- The reactor core was completely defueled on February 13,198P.
The licensee. is presently performing extensive pre-
- ventive maintenance and ' modifications of plant ~ equipment.
The licensee L_
plans to begin. fuel reload'in late July.
3.0' Emergency Notification System (ENS) Rep _ orts During: this period,.the 1 censee madt cwo: reports to the NRC pursuant to
[
a 10 CFR-73.71 and three ree rts per 10 CrR 50.72:
On July 8, 1987, t ie licensee reported the'. discovery-of a design error)in. the configuration. of a security area-door.' There was no evidence 1 that:'any unauthorized entry had occurred. EA minor altera-tion of the door was. subsequently performed -to resolve the - problem.
i On' July 11,1987, ~ the licenseeEreported the discovery of an unauth-orized opening into a security areaduring ongoing maintenance,
' There was no. evidence that unauthorized entry into the security area
'had1 occurred.
The-opening was closed.
1 A' team of three NRC security specialist inspectors arrived onsite July 13, 1987 to evaluate the status of portions of the licensee's~ security program E
and to followup on the above incidents.
l l
1 0FFICIAL RECORD COPY PILGRIM BI-WEEKLY STATUS RPT - 0003.0.0 07/16/87
3 Enclosure 2
g l
On July 2,- 1987, the dry chemical ' f. ire. suppression system for the B Emergency Diesel Generator (EDG) was spuriously initiated. The sys-I tem consists of two' chemical st'orage tanks that discharge into a f
covered fuel oil piping chase located in the EDG room.
Initiation
'of.the system can be accomplished manually,'or automatically if asso-ciated heat sensors located in the pipe chase are tripped. Since no fires or. excessive heat sources were found in the area, 'the system j
may have been inadvertently manually. tripped.
The system was re-charged and returned to service on July.3.
Other IDG fire detection
{
and suppression systems remained operable ' during i. hat time, and a
{
continuous fire watch was posted.
The ' resident ~ inspectors will follow up on licensee actions.
1 A spurious Reactor Protection System (RPS) trip signal was received on July 3,1987, resulting in a reactor scram signal. The RPS. mon-itors certain plant parameters and will automatically initiete a reactor.- shutdown, called a scram, if off. normal conditions are sensed.
This system continues to be active even with the plant shut-i down.
The plant was shutdown prior - to the scram, with all fuel i
removed from the reactor vessel.
The-licensee had previously-l inserted a trip signal on the B RPS channel as part of planned main-1 tenance activities.
A spurious trip of the E average power range monitor (APRM) then caused a trip of the A RPS channel, resulting in generation of a full scram. The signal was subsequently cleared and the logic reset.
The licensee is investigating the source of the APRM trip.
On July 7, 1987 two spurious Reactor Protection System (RPS) trips occurred resulting in two scram signals.
A trip signal had been manually inserted in RPS channel B to accommodate ongoing mainten-
'l ance. At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> the Electrical Protection Assembly (EPA) on the output of the A RPS motor generator (MG) set tripped,' completing the logic necessary for the full scram. The EPA is designed to open and remove RPS logic power if certain degraded power conditions are sensed. The EPA was reset and the scram cleared by about 0040 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
Subsequently the B channel of RPS was manually tripped to allow. con-tinuance of the planned maintenance. At 0105 the EPA on the A MG set again tripped generating a second full scram. The second scram was reset at 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br /> af ter completion of the maintenance on the B RPS system.
The licensee is investigating the cause of the EPA trips.
The resident inspectors will monitor the licensee's followup.
l
)
l L
s
l o.,
Enc 1osure 3
5.0 NRC Staff Status During the Period Three NRC Resident Inspectors monitored plant activities between July 1, and July 15, 1987.
The inspection staff at Pilgrim during the report period consisted of the following:
Martin McBride, Ph.D. --- Senior Resident Inspector Jeffrey Lyash Resident Inspector Tae Kim Resident Inspector' During the week of July 13, 1987 one region-based specialist inspector was on site to review the status of licensee response to previously identified issues.
In addition a team of three NRC security specialist inspectors l
were on site to evaluate portions of the licensee's security program, i
Results of this team inspection will be documented in NRC inspection report 50-293/87-30.
I i
l 1
I l
l 1
i 0FFICIAL RECORD COPY PILGRIM BI-WEEKLY STATUS RPT - 0005.0.0 07/16/87
_---_---_--_--_o