ML20069H164
| ML20069H164 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 03/21/1983 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, KMLNRC-83-031, KMLNRC-83-31, NUDOCS 8303280269 | |
| Download: ML20069H164 (1) | |
Text
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KANSAS GAS AND ELECTRIC COMPANY THF E LE CTFEC COMPANY CLENN L eL O E S T E Il
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March 21, 1983 Mr. W.C. Seidle, Chief Reactor Projects Branch 2 U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 l'/A 2 312 l
kW KMLNRC 83-031 J
L Re:
Docket No. STN 50-482 j
Subj: Interim 10CFR50.55(e) Report - Bolt Torque on Instrument Mounts
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Dear Mr. Seidle :
This letter provides an interim report on a 10CFR50.55(e) item concerning bolt torque on instrument mounts. This matter was reported by Mr. Otto Maynard of Kansas Gas and Electric Company (KG&E) to Mr. Johns Jaudon of the Nuclear Regulatory Commission, Region IV, on February 22, 1983, by telephone.
During a surveillance of instrument installations, a potentially reportable item was revealed. The designer's specifications state that instruments should be installed in accordance with the manufacturer's specifications when they provide torque requirements for mounting bolts.
If a specific torque value is not provided, the designer then recommends that the bolts be torqued snug using an eight to twelve-inch wrench. For three types of instruments supplied by one vendor, the bolts were potentially improperly torqued. The vendor's bolt torque specifications were not being picked up on the traveler. This resulted in bolts being torqued snug rather than to a specified value.
In the interim the traveler was revised to include the specified bolt torque value. IIowever, when attempting to go back and correctly torque these bolts, it was found that the heads of some of the mounting bolts for the vendor's instruments broke. Therefore, the designer was requested to evaluate this item and to provide revised torque specifications for these instrument mounting bolts.
The status of the evaluation of this subject will be reported to the NRC on or before June 24, 1983.
In the interim, please direct any questions to me or to Mr. Otto Maynard of my staff.
0303200269 830321 Yours very truly, PDR ADOCK 05000482 S
PDR GLK:bb
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cc:RCDeYoung IIRoberds/SSchum 201 N. Market - WicMa. Kansas - Mail Address: PO. Box 208 I Wrchita Kansas 67201 - Telephone: Area Code (316) 261-6451