IR 05000263/2003002

IR 05000263-03-002(DRS), on 02/03/2003 Thru 02/21/2003, for Nuclear Management Company, LLC, Monticello, Mn; Monticello Nuclear Generating Plant Safety System Design and Performance Capability Inspection

ML030980088
Person / Time
Site:	Monticello
Issue date:	03/31/2003
From:	Dave Hills NRC/RGN-III/DRS/MEB
To:	Denise Wilson Nuclear Management Co
References
IR-03-002
Download: ML030980088 (48)

Text

rch 31, 2003

SUBJECT:

MONTICELLO NUCLEAR GENERATING PLANT NRC INSPECTION REPORT 50-263/03-02(DRS)

Dear Mr. Wilson:

On February 21, 2003, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Monticello Nuclear Generating Plant. The results of this inspection were discussed on February 21, March 7, and March 24, 2003, with you and other members of your staff.

The inspection examined activities conducted under your license as they relate to safety and compliance with the Commissions rules and regulations and with the conditions of your license.

The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel. Specifically, this inspection focused on the design and performance capability of the emergency diesel generators and their support systems to ensure that they were capable of performing their required safety-related functions. In addition, the inspection performed the biennial assessment of permanent plant modifications and changes made under 10 CFR 50.59.

Based on the results of this inspection, the inspectors identified eight issues of very low safety significance (Green), all of which were determined to involve violations of NRC requirements.

However, because of their very low safety significance and because they were entered into your corrective action program, the NRC is treating the issues as Non-Cited Violations in accordance with Section VI.A.1 of the NRC s Enforcement Policy. If you deny these Non-Cited Violations, in whole or in part, you should provide a response with a basis for your denial, within 30 days of the date of this inspection report, to the Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555-0001, with copies to the Regional Administrator, Region III; the Director, Office of Enforcement, United States Nuclear Regulatory Commission, Washington, DC 20555-0001; and the NRC Resident Inspector at the Monticello Nuclear Generating Plant. In accordance with 10 CFR 2.790 of the NRCs "Rules of Practice," a copy of this letter and its enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRCs document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely,

/RA/

David E. Hills, Chief Mechanical Engineering Branch Division of Reactor Safety Docket No. 50-263 License No. DPR-22

Enclosure:

Inspection Report 50-263/03-02(DRS)

REGION III==

Docket No: 50-263 License No: DPR-22 Report No: 50-263/03-02(DRS)

Licensee: Nuclear Management Company, LLC Facility: Monticello Nuclear Generating Plant Location: 2807 West Highway 75 Monticello, MN 55362 Dates: February 3 through 21, 2003 Inspectors: P. Lougheed, Engineering Inspector, Lead G. Hausman, Engineering Inspector, I & C J. Neurauter, Engineering Inspector, Mechanical S. Sheldon, Engineering Inspector, I&C H. Walker, Engineering Inspector, Mods & 50.59 J. Panchison, Mechanical Contractor J. Chiloyen, Electrical Contractor Approved by: David E. Hills, Chief Mechanical Engineering Branch Division of Reactor Safety

Table of Contents

SUMMARY OF FINDINGS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

REPORT DETAILS

REACTOR SAFETY

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1R02 Evaluations of Changes, Tests, or Experiments

. . . . . . . . . . . . . . . . 1

1R17 Permanent Plant Modifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1R21 Safety System Design and Performance Capability

. . . . . . . . . . . . . 2

.1 System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

a. Inspection Scope

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

b. Findings

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

.2 System Condition and Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

a. Inspection Scope

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

b. Findings

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

.3 Diesel Generator Fuel Oil Storage Tank Level

Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

.3 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

a. Inspection Scope

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

b. Findings

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

.1 Unqualified Fuses Installed in 125 Volt DC Safety Related

Distribution Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

.3 Incorrect Temperatures Specified In Environmental

Qualification Document . . . . . . . . . . . . . . . . . . . . . . . . . 17

OTHER ACTIVITIES (OA)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4OA5 Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20 (Closed) Unresolved Item 50/263/01-15-02 . . . . . . . . . . . . . . . . . . . . . . . . . . .

(Closed) Unresolved Item 50-263/02-06-01 . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUPPLEMENTAL INFORMATION

KEY POINTS OF CONTACT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

LIST OF ITEMS OPENED, CLOSED, AND DISCUSSED

. . . . . . . . . . . . . . . . . . . . . . . 1

LIST OF DOCUMENTS REVIEWED

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2