ML19320D424
| ML19320D424 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 05/28/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Koester G KANSAS GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8007210348 | |
| Download: ML19320D424 (1) | |
Text
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UNITED STATES
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s May 28, 1980 In Reply Refer To:
RIV-Docket No.
STN 50-482/IE Circular No. 80-13 Kansas Gas & Electric Co.
Attn: Mr. Glenn L. Kcaster Vice President-Operations Post Offf;e Box 208
- Wichita, 20<.
67201 Gentlemen The enclosed IE Circulac No. 80-13, is forwarded to you for information.
If there are any questions relat:ed to your understanding of the suggested actions, please contact this office.
Sincerely,
%(
Karl V. Se'yfrit/
Director
Enclosures:
1.
IE Circular No. 80-13 2.
List of Recently Issued IE Circulars cc: w/ enclosures Messrs. Nicholas A. Petrick, SNUPPS D. T. Mc/ hee, Kansas City Power and Light Company Gerald Charnoff, Shaw, Pittman, Potts & Trowbridge E. W. Creel, Kansas Gas and Electric Company 8 0 072 2 034g
t SSINS No.: 6830 Accessions No.:
UNITED STATES 7910250495 NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCr fENT WASHINGTON, D.C. 20555 IE Circular No. 80-13 Date: May 28, 1980 Page 1 of 2 GRID STRAP DAMAGE IN WESTINGHOUSE FUEL ASSEMBLIES Description of Circumstances:
During the refueling operation at Salem Unit 1, it was noted by the licensee that some of the asse.mblies that were removed had suffered grid strap mechanical damage. This was reported to the NRC in LER 79-44.
Subsequent to this discovery all fuel assemblies were removed from the core for examination.
The degree of the damage to the grid straps was classified in three cate-gories: small pieces missing (15 assemblies), grid material ripped and laid over (5 assemblies), larger sections missing and fuel pins exposed (11 assemb-lies). No damage to the fuel pins was observed. A total of 31 assemblies suffered some grid damage.
The damage appeared to be the result of corner to corner interaction of the Srid straps of diagonally adjacent fuel assemblies during the vertical loading and unloading movements. No correlation of the damage to core location, grid strap elevation, or manufacturing ano shipping batches has been identified.
The licensee and the fuel manufacturer established the following guidelines for reloading damaged assemblies: (1) those assemblies with full width pieces missing will not be reloaded for cycle 2, (2) those assemblies with deformed edges and those with small pieces missing will be reloaded with special pro-cedures to prevent further damage.
Salem Unit 1 is fueled with 17X17 Westinghouse assemblies.
Similar grid problems nave occurred at other facilities fueled with 14X14 and 15X15 Westinghouse assemblies; however, fewer assemblies were damaged in those instances.
Recommended Actions:
All licensees using 14X14, 15X15, or to:
1 (1) Visually inspect grid straps of discharged from the core as well DUPLICATE DOCUMENT the spent fuel pool for control Entire document previously returned to the core.
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