ML17317A726
| ML17317A726 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 11/03/1978 |
| From: | Shaller D INDIANA MICHIGAN POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 7811140154 | |
| Download: ML17317A726 (3) | |
Text
REGULATO INFORMATION DXSTRXBUTXON STEM DOCKET NBR: 50-5 C
OK -1 DOC DATE-
~
RECIPIENT: KEPPLER J.G.
ACCESSION NBR:
ORXGXNATOR: SHALLER D.V; COPXES RECEIVED:
COMPANY NAME:IN & MI PNR
SUBJECT:
SIZE:
2
'J Occurrence re t re meteorolo ical s s ino erabilit On 780928 the 50
& 100 ft wind direction instrs were im ro 'erl switchin Caused b
leaving jumpers'n during installation of new Meteorolo ical S
s Transla-tors.
DISTRIBUTION CQDEt
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il'b gpg()pQII g~~Fj 'f1~'I@II IIVO/AiVA8 NICHIGAiVP05'E8 CONPAIVY DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 Mr. J.
G. Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission 799 Roosevelt Road Glen El lyn, Illinois 60137 November 3, 1978 Operating License DPR-58 Docket 8050-0315
Dear Mr. Keppler:
This report is submitted pursuant to Appendix A, Technical Speci ication paragraphs
- 3. 3.3.4 Action Item b and 6. 9.2 Item c in relation to Meteorological System inoperability and resultant speci a 1 repo rtin g requi remen ts.
On August 30, 1978 both of the Meteorological System Translators were replaced due to a switching malfunction, calibrated and returned to service.
New Translators are received containing jumpers installed for lead compensation.
The jumpers are not utilized at this plant and are normally removed prior to installation.
In this particular
- instance, the jumpers were not removed prior to installation and when calibrated induced a lead compensation error which exceeded the Technical Specification allowable tolerance.
This condition existed for a period of twenty-eight days.
On September 28, 1978 both the fifty and one-hundred fifty foot wind direction instruments were observed to be improperly switching.
While troubleshooting the switching problem the previous error was discovered and corrected.
Subsequent to this, the entire Wind Speed and Direction System was fully recalibrated with satisfactory results on October 26, 1978.
All spare Translators currently in the storeroom which are available for use have been inspected to insure that the jumpers previously described have
- beer, removed.
Additionally, a precautionary statement concerning translator jumper removal has been added to the applicable Instrument Maintenance p'rocedure via Temporary Change Sheet.
This occurrence has had no effect on the health and safety of the publ ic.
Sin ce rely, D.
V. Shaller plant Manager
Page 2
Mr. Keppler cc~
J. E. Dolan R. W. Jurgensen R. F. Kroeger R. Kilbun~
R. J. VoU.en BPI K. R. Baker BD: III R. C. Callen 1PSC P.
W. Steketee, Esp R. Walsh, Ear G. Charnoff, Esq J. M. Hennigan G, Olson PNSM File J. F. Stietzel R. S. Keith Dir., IE (20 copies)
Dir., MZPC (2 copies)
'LDivmtorate of Licensing.