ML17325A218
| ML17325A218 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 07/17/1987 |
| From: | Will Smith INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Davis A NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8707270211 | |
| Download: ML17325A218 (6) | |
Text
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RE(;VLATOWINFORMATION DISTRIBUTION T'STEM (R IDS)
ACCFSBION NBR; 8707270211 DQC. DATE: 87/07/17 NOTARIZED:
NQ DOC V<ET T<l FACIL: 50-315 Donald C.
Cook Nuc lear Poeer Plant Unit 1
Indiana 0
05000315 50316 Donal d C.
Cook Nuclear PoU!er Plant<
Unit 2 Indiana f'.
0500031!'2
'UTH. NAM!=.
AUTHOR AFFIl IATION BMI TH< A. (
~c Michigan Electric Co.
REC IP. NAf"lE RECIPIENT AFFiLIATION Document Control Branch (Document Control Desk)
SUBJECT:
Special rept: on 870610< seismic monitoT ing sos triggered due to seismic event. Galibr of reactor pit SMA detector completed on 870626. Detector to be declared operable on 870711. Remaining detectors to be calibr bg 870727.
DISTRIBUTION CODE.:
IE22D COPIES RECEIVED: LTR ~ ENCL +
SIZE:
TITLE:
- 50. 73-Licensee Event Report (LER)
< Incident Rpt<
etc.
NOTES:
REC IP lEN 1 ID (".QIDE/NAIIf=
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TOTAL INCUMBER QF CQP IES REQUIRED; LTTR 45 ENCL
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/+lcctric INDIANA5 MICHIGANEI.ECTRIC CONPANY DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Brld9emen, Ml 49106 Tefephone (616) 465 5901 July 17, 1987 Donald C.
Cook Nuclear Plant Units 1 and 2
Docket Nos.
50-315 and 50-316 License Nos.
DPR-58 and DPR-74 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.
20555 Attention: A. B. Davis In accordance with Technical Specification (T/S) 3.3.3.3.b this special report is being submitted to inform you that, seismic monitoring instruments have been inoperable for more than 30 days.
On June 10, 1987, the seismic monitoring system triggered as a result of a seismic event that occurred in Lawerenceville, Illinois.
In accordance with T/S 4.3.3.3.2, a special report was submitted to your office describing the measured activity and effects on the plant.
T/S 4.3.3.3.2 also requires 'that each of the seismic monitoring instruments, activated during a seismic event, be restored to operable status and the applicable channel calibrations performed.
A channel calibration was performed on Peak Recording Accelerograph (PRA) detectors, new tapes were installed and the functional test procedure performed to declare them operable.
New tapes were also installed in the Strong Motion Triaxial Accelerograph (SMA) detectors at which time they were returned to a functional -con-figuration, while remaining technically inoperable pending the completion of the T/S required channel calibration.
The calibra-tion of the SMA detectors was not performed due to the inaccessi-bility of the Reactor Pit Detector and the unavailability of the vendor who'performs the calibration.
8707270211 870717 PDR ADOCK OSOOO315 S
0 I
On June 26,
- 1987, D. C.
Cook Unit 1 was shut down for refueling.
After containment
- cleanup, the calibration of the reactor pit SMA detector was completed.
The test procedure was performed and the detector was declared operable on July 11, 1987.
The remaining T/S detectors are scheduled to be calibrated the week of July 27, 1987.
Sincerely, L<+/
W.
G. Smith, Jr.
Plant Manager WGS:afh cc:
J.
E. Dolan M. P. Alexich R. F. Kroeger H. B. Brugger NRC Resident Inspector R.
C. Callen G. Charnoff, Esq.
D. Hahn Records
- Center, INPO PNSRC A. A. Blind Dottie Sherman, ANI Library A. B. Davis, Region III D. L. Wigginton, NRC J.
G. Feinstein/B.
P.
Lauzau