L-MT-15-043, Withdrawal of License Amendment Request to Revise Technical Specification Surveillance Requirement 3.5.1.3.b to Correct the Alternate Nitrogen System Pressure
| ML15149A405 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 05/29/2015 |
| From: | Gardner P Northern States Power Co, Xcel Energy |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-MT-15-043 | |
| Download: ML15149A405 (2) | |
Text
(l Xcel Energy@
May 29, 2015 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Monticello Nuclear Generating Plant Docket 50-263 Renewed Facility Operating License No. DPR-22 Monticello Nuclear Generating Plant 2807 W County Road 75 Monticello, MN 55362 L -MT 043 10 CFR 50.90 Withdrawal of License Amendment Request to Revise Technical Specification Surveillance Requirement 3.5.1.3.b to Correct the Alternate Nitrogen System Pressure
References:
- 1) NSPM to NRC, "License Amendment Request to Revise Technical Specification Surveillance Requirement 3.5.1.3.b to Correct the Alternate Nitrogen System Pressure," (L-MT-14-036) dated June 17, 2014.
On June 17, 2014, in accordance with 10 CFR 50.90, the Northern States Power Company-Minnesota (NSPM), doing business as Xcel Energy, Inc., submitted a license amendment request (LAR) (Reference 1) to revise the Monticello Nuclear Generating Plant (MNGP) Technical Specifications (TSs). Specifically, it was proposed to revise Surveillance Requirement (SR) 3.5.1.3.b to increase the Alternate Nitrogen System supply pressure from greater than or equal to 410 psig to greater than or equal to 700 psig.
The supply pressure currently specified in the surveillance requirement was determined to be non-conservative and the guidance of Nuclear Regulatory Commission (NRC)
Administrative Letter, 98-10, "Dispositioning of Technical Specifications That Are Insufficient to Assure Plant Safety," is being applied. Interim administrative controls are in-place to maintain Alternate Nitrogen System pressure at a higher value to ensure operability of the system until aLAR is approved.
Subsequent to LAR submittal, issues were identified with the supporting calculations associated with the system configuration resulting in a decision to verify the Alternate Nitrogen System configuration during the 2015 Refueling Outage and revise the associated calculations, as required. However, revisions to the associated calculations are now not expected to be completed in time to support submittal of a supplement within the specified NRC review timeframe. Consequently, NSPM is electing to withdraw this LAR and intends to submit a revised LAR at a future date.
Document Control Desk L -MT -1 5-043 Page 2 of 2 Summary of Commitments This letter proposes no new commitments and does not revise any existing commitments.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on May.l]_, 2015.
Peter A. Gardner Site Vice President, Monticello Nuclear Generating Plant Northern States Power Company-Minnesota cc:
Administrator, Region Ill, USNRC Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC Minnesota Department of Commerce