ML022940411
| ML022940411 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 10/04/2002 |
| From: | Harkness E AmerGen Energy Co |
| To: | Hoffman J Office of Nuclear Reactor Regulation, State of NJ, Dept of Environmental Protection |
| References | |
| 2130-02-20289, NJ0005550 | |
| Download: ML022940411 (4) | |
Text
AmerGen Energy Company, LLC An Exelon/B ritish Energy Company Oyster Creek US Route 9 South P.O Box 388 Forked River, NJ 08731-0388 October 4, 2002 2130-02-20289 Mr. Jeffery Hoffman Bureau of Standard Permitting Division of Water Quality New Jersey Department of Environmental Protection CN-029 Trenton,-NJ 08625-0029
Subject:
Oyster Creek Generating Station NJPDES Discharge to Surface Water Permit NJ0005550 Removal of Dilution Pumps from Service On September 23, 2002, the Oyster Creek Generating Station dilution plant was secured to allow for maintenance to increase the level of safety during the upcoming refueling outage. The purpose of the maintenance was to increase the reliability of a transformer and associated electrical equipment which tie the Oyster Creek site to the off site grid. At 2:37 AM, the transformer was removed from service for maintenance. De-energizing this transformer removes power to the dilution plant. With no dilution pumps operating, the Discharge Canal temperature at the U.S. Route 9 Bridge rose to approximately 101 'F in one hour. When the water temperature at the Route 9 bridge exceeds 97 'F, as specified in Part IV-B/C.4.A of NJPDES Permit NJ0005550, it is reportable under Part IV-B/C.4.B(1) of that permit. All maintenance on the transformer was terminated and work began immediately to repair the transformer and restore power to the dilution pumps.
The increase in the discharge canal temperature caused a fish kill. The NRC and NJDEP were notified of the fish kill. Concurrently, the clean up of the fish commenced. The transformer was returned to service at 6:39 PM on September 23, 2002. The #3 Dilution Pump was placed in operation at 8:37 PM, and by 9:15 PM, the Route 9 Bridge water temperature had decreased to 970 F. The No.2 Dilution Pump was subsequently returned to operation at 10:14 PM.
The fish were counted, classified, and removed by the end of the day on September 25, 2002. A total of 5838 fish, composed of 23 species, were killed.
C321-02-20289 Page 2 An internal investigation was initiated on Monday, September 23, 2002, to determine the cause of the event. The preliminary results of the investigation have identified possible corrective actions that should prevent recurrence involving both administrative and system modifications.
These corrective actions will be evaluated and implemented as appropriate. The final results of the investigation will be included in the Technical Specification required 30 day report.
If any further assistance or information is required, please contact John Rogers, of my staff, at 609.971.4893.
Sincerely, Ernest J. Harkness Plant Manager OCGS Cc:
Van Sciver, H.E.
Administrator, USNRC Region 1 Senior NRC Resident Inspector Senior Project Manager, USNRC NRR Nuclear Environmental Kennett USNRC Document Control Desk; Docket 50-219
---r--
-r-
&}
o0 0
0 0
0 0
00 o
0 0
0 0
00
- 0. 0
- 0.
a pu.
a.(
I )
II I
A vi IA C
)
m mnr N
C1 N1 NM N
CN atuljL pug l 0
N CL w
- 0.
IA N
I I 0
0 CL In C1"4 C14 I I I I 0
0 0
0 0
- 0.
(U LA N
r4 1-*
ZO/IZ/60 LZZO 0 110 E-puO Z-L sdwnd uo0pnIa]
l"........
t 6 a, nod sn -.
I 4 -
tZZ & NO Z-t CNV ZOIEZ/6'LEOZ&u dn lniIaeu t
o....................
S.................
=.
=
l 11"1 I
zooz 'tZ Jaqwadas - ZOOZ 'ZZ JaqLuawdas son-sijeadus jal aeM SUO4e4S 3u~LeJaua) eNaaj:) Ja4sAo SainOt-I
(
1 I
I 09
- 99 OL 08 06 SO6 OON S01
?I f-t CD
P Oyster Creek Licensing Correspondence Distribution Sheet File No.
Reference/Letter No.
02070 2130-02-20289 Letter Date Date Sent / Received Title
Description:
Fish Kill of 09/23/2002 - Ten Day Report LICENSING ENGINEER: John Rogers SPECIAL NOTES:
Office of the President R. J. DeGregorio (Letter Only)
R. Maldondo Communications Engineering V.Aggarwal M. Newcomer A. Agarwal D. Barnes T. E. Quintenz M. Button F. Buckley T. Powell R. Larzo C. Lefler AmerGen/Exelon C. Pardee G. Vanderheyden M. Gallagher (Outgoing Only)
J. Hufnagel (Outgoing Only)
D. Walker KS Document Ctr I Toncic DDistel...
Jeff Benjamin OCAB2 OCAB2 OCAB2 OCAB3 OCAB3 OCAB3 OCAB3 OCAB3 OCAB3 OCAB3 OCAB3 OCAB3 OCAB3 X
X X
X X
KSA 3-N KSA 3-N KSA 3-E X
KSA 3-E X
KSA 3-E X
KSA 1-N X
KSB 3-W KSA3E Cantera' Oyster Creek E. Harkness M. Trum C. Wilson R. Brown J. Vaccaro J..Bobba A. Krukowski R. Ewart G. True D. Norton W. Collier D. McMillan J. Magee M. Massaro R Adams -
M. Moore
-Other.--.
NSRB (22 copies)
,Steve Bailey D Weigle M Browne MOB MOB MOB
-MOB,--_
MOB AOB NMB OCAB2 Whse 2 Whse 1 AOB Aux Bldg 12 NMB OCAB2 OCAB2 AOB X
X X
X X
X X
X X
AOB X
AOB X
AOB X
External Distribution NJBNE - K. Tosch INPO ANI - R. Oliveira BPU - R. Chilton T. Gould GE - P. Ray
Reference:
TSCR 301 File Index Number: 20.16.01.01 Cross Reference Number: 20.16.01.01,:
10/04/2002 10/04/2002 X
I I