ML20207L614
| ML20207L614 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 06/09/1986 |
| From: | Farrar D COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 1758K, NUDOCS 8701120258 | |
| Download: ML20207L614 (2) | |
Text
r Commonweakh Edison 3
72 West Adams Street, Chicago, Illinois e
e
- Address Reply to: Post Office Box 767 Chicago, Illinois 60690-0767 June 9, 1986 Mr. James G.
Keppler
. Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 601J7
SUBJECT:
Braidwood Station Units 1 and 2 Supplemental Response to Inspection Report Nos.
50-456/85-048 and 50-457/85-047
REFERENCES:
(a) J.J. Harrison letter to C. Reed dated January 27, 1986 (b) D.L. Farrar letter to J.
Keppler dated March 11, 1986 (c) D.L. Farrar letter to J.
Keppler dated April 18, 1986 Deat :::. Keppler:
This letter is written regarding a revision to information submitted in References (b) and (c).
Specifically, Violation 456/85-048-01; 457/85-047-01, in the section titled " Corrective Action Taken and Results Achieved", a change to the first paragraph should be noted.
The reference to a comprehensive listing of the approved settings for each installation is incorrect.
Contrary to what was indicated in References (b) and (c), this review will only address those settings which; (1) exceed the manufacturer's recommended settings or (2) those where torque switch settings have yet to be provided.
Full compliance for this item is anticipated by August 15, 1986.
This change is as indicated in the enclosure provided.
If you have any questions on this matter, please direct them to this office.
3 Very truly yours, 870112O258 B60609 PDR ADOCK 05000456 i
0
~~
jkh '
/m D. L.
rrar
/
Director of Nuclear Licensing DLP/pav Enclosure 3s cc:
NRC Resident Inspector - Braidwood Ill 1758K M60/
J
n..
- l s*
SUPPLEMENTAL RESPONSE 456/85-048-01: 457/85-047-01 Also, at the time of the inspection, it appears that some confusion existed in the "as found" settings of 1SI8807B torque switch.
Subsequent verification by OAD indicated the valve was indeed set in agreement with the applicable Motor Form 1 data sheet.
Hand cranking of the valve using the valve hand wheel did not cause rotors two and four to actuate, but subsequent stroking of the valve electrically, produced switch motor operation.
The number two and four rotors were re-adjusted at the time to allow increased stem travel after limit switch operation.
Corrective Action Taken and Results Achieved To insure accurate settings for motor operated valve torque switches, a review of the Braidwood motor operated valve settings is being undertaken at Sargent & Lundy.
Any torque switch settings which exceed the manufacturer's recommendation, or those where torque switch settings were not provided, will be included in the S&L review.
Upon receipt of this data, this list will be transmitted to OAD for verification that "as set" values comply with engineering supplied values.
Any discrepancies will be corrected and documented by OAD field personnel.
Certain valves in the RHR, CVCS and SI systems will be functionally tested and baseline data recorded during preoperational testing.
This testing and data is to be taken while the valves are being tested under full system flow and pressure.
Corrective Action Taken to Avoid Further Violation A list of attributen used for the initial set up of valve limit switches has been established and incorporated into the OAD work practices and training instructions.
The incorporation of these attributes will assure consistency in the technique used by personnel involved with the initial set up of valve motor operators.
Date when Full Compliance will be Achieved l
The approved settings for motor operated valves from the Architect Engineer, Sargent & Lundy, is expected by July 15, 1986, with full compliance anticipated by August 15, 1986.
1758K
\\
)