L-MT-18-051, Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control,

Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control,

ML18254A046
Person / Time
Site:	Monticello
Issue date:	09/11/2018
From:	Murphy M Northern States Power Co, Xcel Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EPID L-2017-LLA-0360, L-MT-18-051
Download: ML18254A046 (4)

Text

2807 West County Road 75 Monticello, MN 55362 fl Xcel Energy*

RESPONSIBLE BY NATURE 800.895.4999 xcelenergy.com September 11, 2018 L-MT-18-051 10 CFR 50.90 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Monticello Nuclear Generating Plant Docket No. 50-263 Renewed Facility Operating License No. DPR-22 Supplement to License Amendment Request to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control, (EPID: L-2017-LLA-0360)

References:

1) Letter from NSPM to the NRC, Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control, dated October 20, 2017 (ADAMS Accession Number ML17293A280)

2) Letter from NSPM to the NRC, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control, and Supplement (EPID: L-2017-LLA-0360), dated June 1, 2018 (ADAMS Accession Number ML18157A056)

By letter dated October 20, 2017, (Reference 1), Northern States Power Company, a Minnesota Corporation, doing business as Xcel Energy (hereafter NSPM), submitted a license amendment request (LAR) to adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control, for the Monticello Nuclear Generating Plant (MNGP). By letter dated June 1, 2018, (Reference 2) NSPM submitted both a response to an NRC Request for Additional Information (RAI) and a supplement to the LAR. The supplement portion of Reference 2 addressed minor errors and opportunities for clarification, which had been identified subsequent to the submittal of the LAR.

For Enclosure 2, item 3, of Reference 2, the resolution had been developed by the Boiling Water Reactors Owners Group (BWROG). The BWROG recommended action was for licensees to consider taking a variation from the TSTF to affix footnote (a) to the Required Channels per Function column for Functions 1.a and 2.a of the TS RPV Water Inventory Control Instrumentation table (MNGP TS Table 3.3.5.3-1 located on TS page 3.3.5.3-3).

NSPM had intended to adopt the BWROG variation and provided a marked-up TS page 3.3.5.3-3 containing a modified TS Table 3.3.5.31. However, contrary to the BWROG

Document Control Desk Page 2 variation, NSPM erroneously affixed footnote (a) to Functions 1.a and 2.a in the "Applicable Modes or Other Specified Conditions" column. Therefore, this supplement corrects the error and aligns the MNGP TS Table 3.3.5.3-1 with the BWROG recommended action by affixing footnote (a) correctly to the "Required Channels per Function" column, as was originally intended.

The NSPM has reviewed the No Significant Hazards Consideration determination provided in the LAR (Reference 1) and determined that it is unaffected and still applicable with the inclusion of the change. The Enclosure to this letter provides the re-typed TS page 3.3.5.3-3.

Summary of Commitments This letter makes no new commitments and no revisions to existing commitments.

I declare under penalty of perjury, that the foregoing is true and correct.

Executed on September 11, 2018.

!:i~S~t;P41 Director, Nuclear Licensing and Regulatory Services Northern States Power Company - Minnesota Enclosure cc: Administrator, Region Ill, USNRC Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC State of Minnesota

ENCLOSURE MONTICELLO NUCLEAR GENERATING PLANT Supplement to License Amendment Request to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control TECHNICAL SPECIFICATION PAGE (Re-typed)

(1 Page Follows)

RPV Water Inventory Control Instrumentation 3.3.5.3 Table 3.3.5.3-1 (page 1 of 1)

RPV Water Inventory Control Instrumentation APPLICABLE CONDITIONS MODES REQUIRED REFERENCED OR OTHER CHANNELS FROM SPECIFIED PER REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS FUNCTION ACTION A.1 REQUIREMENTS VALUE

1. Core Spray System

a. Reactor 4, 5 2(a) C SR 3.3.5.3.2 397 psig and Steam Dome 440psig Pressure - Low (Injection Permissive)

2. Low Pressure Coolant Injection (LPCI) System

a. Reactor Steam 4, 5 2(a) C SR 3.3.5.3.2 397 psig and Dome Pressure - 440 psig Low (Injection Permissive)

b. Low Pressure 4, 5 1 per D SR 3.3.5.3.2 360 gpm and Coolant Injection pump(a) 745 gpm Pump Discharge Flow - Low (Bypass)

3. Shutdown Cooling System Isolation

a. Reactor Vessel (b) 2 in one trip B SR 3.3.5.3.1 7 inches Water Level - Low system SR 3.3.5.3.2

4. Reactor Water Cleanup (RWCU) System Isolation

a. Reactor Vessel (b) 2 in one trip B SR 3.3.5.3.1 -48 inches Water Level - Low system SR 3.3.5.3.2 Low (a) Associated with an ECCS subsystem required to be OPERABLE by LCO 3.5.2, "Reactor Pressure Vessel (RPV)

Water Inventory Control."

(b) When automatic isolation of the associated penetration flow path(s) is credited in calculating DRAIN TIME.

Monticello 3.3.5.3-3 Amendment No. XXX