DCL-14-121, Cancellation of Licensee Event Report 1-2014-001
| ML14363A266 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 12/29/2014 |
| From: | Allen B Pacific Gas & Electric Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| DCL-14-121, LER 01-014-00 | |
| Download: ML14363A266 (2) | |
Text
Pacific Gas and Electric Company December 29, 2014 PG&E Letter DCL-14-121 Barry S. Allen Site Vice President Diablo Canyon Power Plant Mail Code 104/6 P. 0. Box 56 Avila Beach, CA 93424 805.545.4888 Internal: 691.4888 Fax: 805.545.6445 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 10 CFR 50.73 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 Cancellation of Licensee Event Report 1-2014-001
References:
- 1. PG&E Letter DCL-14-026, "Licensee Event Report 1-2014-001-00, Technical Specification 3.4.3, RCS Pressure Limit Violation During Vacuum Refill Due to Human Error," dated March 31, 2014. (ML14090A450)
- 2. NRC Letter, Anne T. Boland to Ernest Harkness, "Perry Nuclear Power Plant-Revised Non-Cited Violation 05000440/2013007-01 in NRC Problem Identification and Resolution Inspection Report 05000440/2013007," dated September 3, 2014.
Dear Commissioners and Staff:
In Reference 1 above, Pacific Gas and Electric Company (PG&E) submitted a Licensee Event Report (LER) in accordance with 10 CFR 50.73(a)(2)(i)(B) regarding an apparent failure to comply with reactor coolant system (RCS) Pressure and Temperature (Pff) Limits when RCS pressure was below 0 pounds per square inch gauge (psig) during RCS vacuum fill operations.
Regarding a similar apparent violation of Technical Specifications (TS) at Perry Nuclear Power Plant, the NRC concluded in Reference 2 that operation below the 0 psig range shown on the PIT figure did not constitute a violation of TS, since the intent of the figure was to show the minimum temperatures to be maintained at the pressures shown by the PIT curves. Similar to Perry, the Diablo Canyon Power Plant PIT figures show acceptable regions of operation below and to the right of RCS cooldown, heatup, hydrostatic leak test and criticality PIT curves, but do not graphically go below 0 psig.
Accordingly, since a violation of TS did not occur, PG&E is hereby cancelling LER 1-2014-001. This cancellation is consistent with the guidance in NUREG-1022, Revision 3, "Event Reporting Guidelines 10 CFR 50.72 and 50.73."
A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway
- Comanche Peak
- Diablo Canyon
- Palo Verde
- Wolf Creek
Document Control Desk December 29, 2014 Page 2 PG&E Letter DCL-14-121 PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.
Sincerely,
. rli~ ~uJdlL_ -h-Bar~
.. AIIen Site Vice President JY 1 E/4609/50669827 cc:
Marc L. Dapas, NRC Region IV Administrator Thomas R. Hipschman, NRC Senior Resident Inspector Siva P. Lingam, Senior Project Manager IN PO Diablo Distribution