ML18038B584
| ML18038B584 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 02/07/2018 |
| From: | Heather Gepford NRC/RGN-IV/DRS/PSB-2 |
| To: | Emily Larson Entergy Operations |
| References | |
| IR 2017012 | |
| Download: ML18038B584 (3) | |
See also: IR 05000416/2017012
Text
February 7, 2018
Mr. Eric Larson, Site Vice President
Entergy Operations, Inc.
Grand Gulf Nuclear Station
P.O. Box 756
Port Gibson, MS 39150
SUBJECT: GRAND GULF NUCLEAR STATION, UNIT 1, RESPONSE TO CLARIFICATION
OF INITIAL RESPONSE TO A NOTICE OF VIOLATION AND NUCLEAR
REGULATORY COMMISSION INSPECTION REPORT 05000416/2017012
Dear Mr. Larson:
Thank you for your letter of December 21, 2017, (ML17362A041) which provided clarifying
information to supplement your September 21, 2017, reply (ML17269A031) to the Notice of
Violation concerning calibration of the main steam line and containment/drywell high range
radiation monitors. The Notice of Violation was issued on August 22, 2017, in NRC Inspection
Report 05000416/2017012 (ML17235B265).
The NRC identified several discrepancies in your initial response that required clarification.
We have reviewed these clarifications in conjunction with your initial response to the Notice of
Violation and find that they address the violation and the corrective actions taken. Following
review of your responses to the Notice of Violation, we concluded that the surveillances
performed on the main steam line and containment/drywell high range radiation monitors in
response to the Notice of Violation demonstrate reasonably accurate instrument
responses. However, the changes to the calibration procedures themselves warrant additional
review. In particular, we noted that the procedures continue to allow tolerances significantly
wider than industry norm. We will review the implementation of your corrective actions during a
future inspection to determine that full compliance has been achieved and will be maintained.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice and Procedure," a copy of
this letter will be made available electronically for public inspection in the NRC Public Document
Room or from the NRCs Agencywide Documents Access Management System (ADAMS),
accessible from the NRCs Web site at http://www.nrc.gov/reading-rm/adams.html.
E. Larson
2
The NRC also includes significant enforcement actions on its Web site at
https://www.nrc.gov/reading-rm/doc-collections/enforcement/actions/.
Sincerely,
/RA/
Heather J. Gepford, Ph.D., CHP
Chief, Plant Support Branch 2
Division of Reactor Safety
Docket No. 50-416
License No. NPF-29
cc: Electronic Distribution
SUNSI Review: ADAMS: Non-Publicly Available Non-Sensitive Keyword:
By: JJO Yes No
Publicly Available Sensitive
OFFICE
HP:DRS/PSB2
C:DRS/PSB2
C:DRP/PBC
C:DRS/PSB2
NAME
JODonnell
HGepford
JKozal
HGepford
SIGNATURE
/RA/
/RA/
/RA/
/RA/
DATE
2/6/18
2/618
2/7/18
2/7/18