ML20209G264
| ML20209G264 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/04/1986 |
| From: | Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8609120409 | |
| Download: ML20209G264 (3) | |
Text
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av skemmg mmassars massaass General Offices: 1946 West Parnett Road. Jackson. MI 49201. (517) 788-1636 September 4, 1986 James G Keppler, Administrator Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -
REVISED COMPLETION PROGRAM - RESPONSE TO IE BULLETIN 85-03 The NRC letter of August 1, 1986 requested additional information pertaining to the completion program described in Consumers Power Company letter dated May 15, 1986. The requested information is attached as a revised completion program which replaces information contained in the completion program de-scribed on page 3 of our May 15 letter.
In our May 15, 1986 submittal, we committed to completion of the program by the end of the 1987 refueling outage.
Since that time, the refueling outage date has slipped, due to the present plant outage. However, a maintenance outage is presently scheduled in September 1987, and the program will be completed during that time.
f Kenneth W Berry Director, Nuclear Licensing CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC Resident Inspector - Palisades Attachment off
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s a cr B609120409 860704 OC0986-0140-NLO2 PDR ADOCK 05000255 PDR SEP 8 1986 p
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ATTACHMENT Consumers Power Company Palisades Plant Docket 50-255 REVISED COMPLETION PROGRAM - RESPONSE TO IE BULLETIN 85-03 September 4, 1986 i
! Page AT0986-0140-NLO2
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N IE Bulletin 85-03 Completion Program
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f (Revised September 4, 1986) i j
1.
The present motor operated valve switch settings for the Palisades Plant were reconfirmed by Limitorque in 1984, in an effort to enhance informa-i tion and practices related to setting torque switches.
In response to the i
requirements of IE Bulletin 85-03, we are reconfirming the adequacy of these switch settings. Maximum differential pressures listed in Attach-r ment A were determined by Combustion Engineering (CE) for Consumers Power l
Company (CPCo) as part of a CE Owners Group activity. CPCo is presently j
reviewing the differential pressures determined by CE to ensure that they are accurate. In determining the differential pressures, CE considered various design base functions of these valves and then postulated upstream and downstream conditions. These functions and postulated conditions are included in Attachment A.
CPCo is presently participating in another CE Owners Group activity to develop a computer program to determine valve stem thrust based on differential pressure and valve design. Once CPCo i
confirms the valve differential pressures and determines valve stem thrust, the switch settings will be verified.
i 2.
Once the valve switch settings are verified, the valves will be tested to demonstrate that they are operable. Testing will be done at the maximum differential pressure where possible. Where maximum differential pressure t
testing is not possible, specific justification for alternate testing will be provided. We are presently evaluating the use of systems such as MOVATS to complement our differential pressure testing. We anticipate performing the differential pressure testing on the valves listed in i
Attachment A during a maintenance outage scheduled to start in September i
1987.
3.
The motor operated valve switch settings are presently maintained on a l
plant drawing as controlled information. However, the use of these settings have been inadequately controlled in maintenance procedures. We have decided to enhance the administrative controls applied to the deter-mination and use of the valve switch settings. Any change to a safety-related motor operated valve switch setting will be considered a plant i
specification change, and will require a technical and administrative
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review prior to implementing a change.
i j
Our Maintenance Procedures are currently being reviewed by CPCo to ensure l
they are adequate. They have previously been reviewed by a NRC Region III j
inspector specifically for the adequacy of instructions for setting valve limit and torque switches. The enhancements suggested by the inspector are being incorporated into the procedures.
i
,r Upon completion of the above program a written report will be submitted to the NRC.
i I
r AT0986-0140-NLO2
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