ML20249A050
| ML20249A050 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 06/12/1998 |
| From: | Powers D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Randolph G UNION ELECTRIC CO. |
| References | |
| NUDOCS 9806160005 | |
| Download: ML20249A050 (7) | |
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UNITED STATES y.
'g NUCLEAR REGULATORY COMMISSION REGION IV
\\ * * * +0'f 611 RYAN PLAZA DRIVE, SUITE 400 AR LINGTON. TEXAS 76011-8064 June 12,1998 l
1 Garry L. Randolph, Vic,e President and I
Chief Nuclear Officer Union Electnc Cornpany I
P.O. Box 620 Fulton, Missouci 65251
SUBJECT:
TEMPORARY INSTRUCTION 2515/137, REVISION 1, " INSPECTION OF MEDIUM-VOLTAGE AND LOW-VOLTAGE POWER CIRCUlT BREAKERS,"
(NRC INSPECTION REPORT 50-483/98-15)
Dear Mr. Randolph:
The purpose of this letter is to annour, e our medium-and low-voltage breakers inspection at your Callaway Plant reactor facility. This inspection will be conducted in accordance with Temporary Instruction 2515/137, Revision 1, " Inspection of Medium-Voltage and Low-Voltage l
Power Circuit Breakers." We have scheduled this inspection for July 6-10,1998. This inspectior: will involve a team of four NRC personnel.
The inspection will assess medium-and low-voltage switch gear maintenance activities; refurbishment and lubrication methods; programs to address NRC generic communications and manufacturers' generic communications; lessons leamed from industry operating experience; dedicstion of commer ial grade procured components; your treatment of breakers in the Maintenance Rule prograrn; breaker maintenance history; and breaker reliability.
We request that you arrange a short presentation following the entrance meeting regarding the subject breakers installed at your facility. The inspection team will require information about your program and its implementation for in-office preparation for the inspection. A description of the needed material is in the enclosure to this letter. Our designated team leader (Paul C.
Gage) will be contacting your staff and arranging for some of this specific material to be available to the team by June 24,1998. If you have any questions conceming this inspection, please contact Mr. Gage at 817/860-8273 or me at 817/860-8195.
Sincerely, l
Dr. Dale A. Powers, Chief Maintenance Branch Division of Reactor Safety
Enclosure:
as stated i
9906160005 990612 PDR ADOCK 05000483 0
PDR L
4 Union Electric Company,
i Docket No.:
50-483 License No.: NPF-30 cc w/ enclosure:
Professional Nuclear Consulting, Inc.
l 19041 Raines Drive l
Derwood, Maryland 20855 Gerald Chamoff, Esq.
Thomas A. Baxter, Esq.
Shaw, Pittman, Potts & Trowbridge 2300 N. Street, N.W.
Washington, D.C. 20037 H. D. Bono, Supervising Engineer Quality Assurance Regulatory Support Union Electric Company
. P.O. Box 620 Fulton, Missouri 65251 Manager-Electric Department Missouri Public Service Commission 301 W. High P.O. Box 360 Jefferson City, Missouri 65102 Ronald A. Kucera, Deputy Director Department of Natural Resources l
P.O. Box 176 Jefferson City, Missouri 65102 Otto L. Maynard, President and Chief Executive Officer
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Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlingtor, Kansas 66839 Dan 1. Bolef, President
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Kay Drey, Representative Board of Directors Coalition for the Environment 6267 Delmar Boulevard University City, Missouri 63130 1
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l Union Electric Company 1 i
Lee Fritz, Presiding Commissioner
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Callaway County Court House 10 East Fifth Street Fulton, Missouri 65151 Alan C. Passwater, Managnr Licensing and Fuels
- AmerenUE One Ameren Plaza 1901 Chouteau Avenue P.O. Box 66149 St. Louis, Missouri 63166-6149 J. V. Laux, Manager Quality Assurance Union Electric Company P.O. Box 620 Fulton, Missouri 65251 j
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Union Electric Company L E-Mail report to T. Frye (TJF)
E-Mail report to D. Lange (DJL) l E-Mail report to NRR Event Tracking System (IPAS)
E-Mail report to Document Control Desk (DOCDESK) i E-Mail report to Richard Correia (RPC)
E-Mail report to Frank Talbot (FXT) bec to DCD (!E01) i bec distrib. by RIV:
. Regional Administrator Resident inspector DRS Director DRS Deputy Director DRP Director DRS-PSB Branch Chief (DRP/B)
MIS System i
Project Engineer (DRP/B)
RIV File i
Branch Chief (DRP/TSS) l If-I L
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To receive copy of document, Indicate in box:"C" = Copy without enclosures *E" = Copy with enclosures *N" = No copy j
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l PCGage/imtC f DAPower_s/E3 06/p/98 T
06&f98 M NDFFICIAL RECORD COPY
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i ENCLOSURE 1.
A listing of all safety-related medium-voltage and low-voltage metal enclosed circuit breakers along with the following information for each breaker:
I Original equipment manufacturer Type /model number l
Serial number, if assigned (unique identifier, not just shop order number)
Cubicle identification number where currently installed Original equipment supplier (if different from manufacturer) in-service date Date most recent preventive maintenance was performed l
Date of most recent complete overhaul or refurbishment Breaker functional failures, whether in-service or during testing in last 5 years, if any. Give root cause(s) and corrective actions (s)
Any other corrective maintenance in last 5 years (i.e., to correct unsatisfactory conditions discovered before in-service failure)
Updates, upgrades, or modifications Whether included in the scope of the Maintenance Rule program 2.
Plant procedures for general or corrective maintenance on the breaker (if separate from No. 3 below) 3.
The procedure (s) used to perform routine periodic preventive maintenance "ncluding routine periodic inspection, adjustments, cleaning, lubrication, electrical tests, and diagnostic or predictive testing (e.g., timing or reduced control voltage testing, if done). If not specified in procedure, please provide the plant-specified periodicity of preventive maintenance and the document that specifies it or an explanation of how it is specified.
if not specified in proceJure, please state any required post-maintenance restoration checks (e.g., post-installation functional check in connect position) and what document l
requires such checking.
4.
The procedure (s) or specification (s) used for breaker refurbishment, the frequency at which this refurbishment is performed, the document or explanation of what specifies the frequency or the conditions requiring refurbishment. Before arrival onsite, we will select I
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! refurbishment activities from the list in item 1 (for detailed review after arrival) and will request that associated documentation (e.g., procurement and dedication of parts used in-house, work instructions, and records, etc.) be ready for review. We prefer to review original records and will request copies, as required, unless records are archived and must be printed from microfilm or microfiche.
For the purposes of this inspection, " refurbishment" (or overhaul or remanufacture) means major maintenance that may include the following:
(1)
Complete predisassembly inspection and testing (documenting as-found results);
(2)
Complete post-use disassembly; i
I (3)
Inspection of parts for damage or wear, lubricant, proper type, dirt or evidence of other contaminants; (4)
Replacement of worn (out-of-tolerance) or damaged parts; (5)
Cleaning, relubrication, represervation, reassembly, adjustment, final inspection and testing; (6)
Any data for trending key operating parameters, such as timing, forces, dimensions and adjustments, reduced control voltage tests, pole or contact resistance, insulation resistance (including both mein poles and control components, etc.); and 1
i (7)
Modifications or upgrades.
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Procedure (s) governing your program for obtaining, reviewing, disserninating, and using
. operational and industry experience information, including NRC, INPO, and other licensees and the name(s) of the responsible person (s) to contact for further information.
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Procedure (s) goveming your program for obtaining, reviewing, disseminating, using, and
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tracking the disposition of technical information (including vendor manuals) from your NSSS vendor, nonNSSS vendor (s), and manufacturer (s), and the name(s) of responsible l
l person (s) to contact for additional information.
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Procedure (s) governing your program for trending breaker performance, if any, and the I
name of the responsible person (s) to contact for further information.
8.
Procedure (s) governing how you handle equipment failures in terms of documenting the problems and performing root cause analyses.
. 9.
Procedure (s) goveming procurement of repair and/or refurbishment services (including l
dedication of commercial grade services or qualification of commercial and Appendix B contractors, and procedure (s) goveming dedication of spare and replacement parts for breakers, and the name(s) of the responsible person (s) to contact for further information.
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. 10.
A listing of medium-and low-voltage metal enclosed circuit breakers not included within the scope of the Maintenance Rule program.
11.
A listing of medium-and low-voltage metal enclosed circuit breakers included within the scope of the Maintenance Rule program with the following information:
For any in scope, but non1E breakers, state your scoping basis (e.g., functions important to safety and/or failure modes and effects adverse to safety).
Describe which breakers are treated as components of the functional plant system whose components the breakers directly supply power to (e.g., load breakers for service water pump motors, battery chargers, etc.).
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Describe which breakers are treated as part of the medium, and low-voltage ac, or low-voltage de electrical distribution systems (e.g., bus feeders, bus ties, transformer feeder, load center switchboard, or motor control center feeders, etc.).
Describe the breakers, if any, for which maintenance or performance issues are treated as a separate class of components across train, system, or unit boundaries (i.e., common mode breaker-related problems affecting more than one train, system, or unit).
List any instances in which breaker functional failures, or breaker-related train or system functional failures, or plant failures / scrams / trips / unplanned ' shutdowns i
were attributed.
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