ML20087F933
| ML20087F933 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 08/11/1995 |
| From: | Hutchinson C ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 95-003, 95-3, GNRO-95-00093, GNRO-95-93, NUDOCS 9508160109 | |
| Download: ML20087F933 (2) | |
Text
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- 4 Ent rgy operations,Inc.
ENTERGY eo so 7se -
Ptrt Gum.MS 39150 Tot 601437 2800 Au st 11, 1995
- c. n. Hutchin on VCe PfCM)Dnf '
0pe13935 Gmt OJ Nuce Stavn U.S. Nuclear Regulatory Commission Mail Station P1-137 Washington, D.C. 20555 Attention: Document Control Desk
SUBJECT:
Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-29 Special Report 95-003 Accident Range Monitor Exceeds TRM Allowed Down Time GNRO-95/00093 Gentlemen:
On July 28,1995, during performance of 06-lC-SD17-A-1026, Accident Range Monitor AXM-1 Calibration, a cable on the Standby Gas Treatment System B Vent Background Gamma Detector N140E was found crimped making Channel 4 read high.
A 24 inch replacement cable was needed, however only 6 ir.ch cables were in supply. After a short delay in receiving the proper cable, it war, tcund that the detector needed recalibration.
During calibration, the monitor continued to read h 1h. While troubleshooting this problem, the interface box was replaced. Calibration was restarted and tested satisfactory.
Due to these unexpected delays, the detector exceeded its LCO time. Therefore, this special report is being submitted to meet the requirements of the GGNS Technical Requirements Manual Section 6.3.11 Condition C.1.
On August 5,1995 at 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, Detector N140E was repaired, recalibrated and returned to operable status.
Yours truly, g
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3 August;M, 1995 i
ONRO-95/00093 Page 2 of 3.
cc:
Mr. H. W. Keiser Mr. R. B. McGehee Mr. N. S. Reynolds Mr. J. E. Tedrow Mr. H. L. Thomas Mr. Stewart D. Ebneter
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Regional Administrator' U.S. Nuclear Regulatory Commission
- Region 11 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30323.
Mr. P. W. O'Connor, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission l'
Mail Stop 13H3 Washington, D.C. 20555
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