ML20128Q531
| ML20128Q531 | |
| Person / Time | |
|---|---|
| Issue date: | 05/21/1985 |
| From: | Cilimberg R, Jocelyn Craig NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| Shared Package | |
| ML20128Q453 | List: |
| References | |
| REF-QA-99900005 NUDOCS 8506040229 | |
| Download: ML20128Q531 (7) | |
Text
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ORGAN 1ZATION: WESTINGHOUSE ELECTRIC CORPORATION NUCLEAR FUEL DIVISION PITTSBURGH, PENNSYLVANIA REPORT INSPECTION 12/3-7/84 INSPECTION N0.: 99900005/84-01 DATE(S): 12/17-18/84 JN-SITE HOURS: 49 CORRESPONDENCE ADDRESS: Westinghouse Electric Corporation Nuclear Fuel Division ATTN: Dr. Richard Slember General Manager Post Office Box 355 Pittsburgh, Pennsylvania 15230 ORGANIZATIONAL CONTACT: Mr. R. Cost, Manager Operations Product Assurance TELEPHONE NUMBER: (412) 374-2359 PRINCIPAL PRODUCT: Nuclear $u~el assemblies.
NUCLEAR INDUSTRY ACTIVITY: Nuclear fuel supplier for Westinghouse (W) designed Cores.
ASSIGNED INSPECTOR: .
d R. L. Cilimberg, Spe(/ial Projects Inspection Date NI Section (SPIS)
OTHERINSPECTOR(S):
APPROVED BY: t *E 2[ Ed 7Craig, Chief,SPIS,VendyProgramBranch 'Datd INSPECTION BASES AND SCOPE:
l A. BASES: 10 CFR Part 50, Appendix B.
B. SCOPE: Manufacturing and special process control including fuel pellet fabrication, fuel rod loading, bundle assembly, and follow-up on previous inspection findings.
PLANT SITE APPLICABILITY: Ginna 1 (50-244), Turkey Point 4 (50-251), Point i Beach 1 (50-266), Surry 2 (50-281), Point Beach 2 (50-301), Cook 1 (50-315),
l Millstone 2 (50-336), Trojan (50-344),Farley 1(50-348), Farley 2 (50-364),
McGuire 1 (50-369).
I 8506040229 850531 i PDR GA999 EMVWEST l 99900005 PDR i
'0RGANIZATION: ~ WESTINGHOUSE ELECTRIC CORPORATION NUCLEAR FUEL DIVISION PITTSBURr,H. PENNSYLVANIA REPORT INSPECTION N0.: 99900005/84-01 RESULTS: PAGE 2 of 4 A. VIOLATIONS:
None.
B. NONCONFORMANCES:
None.
C. UNRESOLVED ITEMS:
None.
D. STATUS OF PREVIOUS INSPECTION FINDINGS:
- 1. (Closed) Nonconformance (Item A, 82-01): A strap inspection procedure, QCI 933025 was not retained as required by Quality Control Instruction (QCI)-000147, Control and Distribution of QCIs.
All W files reviewed during this i'nspection were found to be complete and in compliance with QCI-000147 requirements. QCI-000147 was revised in October 15, 1982, to include an instruction to area supervisors that they must verify that inspectors being qualified to perform a particular activity have signed cover sheets for all pertinent QCIs.
- 2. (Closed) Nonconformance (Item B, 82-01): Operating procedure (0P)-
715604 was not in the assignec book in work area 61 (Spider Rework Station) as required by Manufacturing Operating Procedure (M0P)-14.
OP-715604 was placed in the assigned book, supervisors were reinstruc-ted, and all work areas reviewed during this inspection were found to be in compliance with M0P-14.
E. OTHER FINDINGS OR COMMENTS:
l The inspector reviewed a number of items which are described below and-l are considered closed.
- 1. Manufacturing and Special Process Control - Control of the manufac-turing of fuel assemblies and special processes was verified and the performance of functions by operatcrs and inspectors was observed to meet the requirements of written procedures and criteria.
! 2. Posting of 10 CFR Part 21: The September 12, 1983, editio; of 10 CFR I
Part 21 was posted rather than the May 9,1984, edition. W personnel stated that they believed that the May 9, 1984, edition did not l contain any substantive revisions and therefore, the current edition was not posted. The inspector discussed with W personnel the require-6
ORGAtJIZATION: WESTINGHOUSE ELECTRIC CORPORATION NUCLEAR FUEL DIVISION PITTSBURGH, PENNSYLVANIA REPORT INSPECTION N0.: 99900005/84-01 RESULTS: PAGE 3 of 4 ment that current copies of 10 CFR Part 21 be posted (10 CFR 21.6).
The May 9, 1984, edition of 10 CFR Part 21 was posted prior to the end of the inspection.
- 3. Damaged Fuel Cladding at Farley Unit No.1: During the fuel off-loading from cycle 4 at Farley 1 on January 29, 1983, damaged fuel was observed.- Subsequent analysis determined that the damage was caused by water jetting which resulted from a 30 psig pressure differential from a faulty flow path. The problem was corrected by the conversion from a downflow system to an upflow system during February 1984.
- 4. Broken Hold Down Springs at McGuire Unit No.1: Inspection of the
- top fuel assemblies at McGuire 1 on March 11, 1983, revealed that a number of hold down springs on burnable poison assemblies were broken. All of the upper head injection springs have been replaced with a new design which eliminates the vibration which was resulting in fatigue failure of the broken hold down springs. Discussions with W personnel indicate that breakage of the newly designed springs has not occurred.
- 5. Broken Hold Down Springs and End Post Wear at Millstone Unit No. 2:
Inspection of top fuel assemblies at Millstone 2 during June 1983, discovered broken hold down springs and galled end posts. Evaluation of the broken springs indicates that cross flow resulted in fatigue failure of one spring per assembly in 15 assemblies because the material exhibited unsatisfactory fatigue properties. The fatigue strength of the new design has been increased by a factor of ten through improved processing and larger springs. The galled end posts were caused by fretting wear between the posts and stop pins.
The problem was identified as improper clearance between stop pins and the end posts. The new design features increased clearances to minimize fretting.
- 6. Clad Defects in One Fuel Assembly at Point Beach Unit No. 2: Higher than normal levels of I-131 in the primary coolant of Point Beach 2 during the Spring 1983 refueling outage prompted an inspection which found through-wall penetrations of the cladding of several fuel rods.
The holes in the cladding were caused by fretting wear in a gap between the cladding and the bottom spring clips. W concluded that the gap was the result of misalignment of the rod as it was inserted in the fuel bundle through a guide plate fixture. The assembly procedure has been modified by W to prevent misalignment of rods so the recurrence of this problem is not likely. The modified procedure was reviewed during this inspection.
ORGANIZATION:
WESTINGHOUSE ELECTRIC CORPORATION NUCLEAR FUEL DIVISION ;
PITTSBURGH, PENNSYLVANIA REPORT INSPECTION NO.: 99900005/84-01 RESULTS: PAGE 4 of 4
- 7. Fuel Pellets with Improper Diameter and Enrichment at Sequoyah Unit 2:
Nineteen fuel rods containing pellets of an improper diameter and enrichment were loaded into fuel assembly P39 and shipped to Sequoyah 2. The problem was discovered by a QC engineer on August 24, 1983, while inspecting records and P39 was not loaded into the reactor.
The problem occurred because gamma scan instructions permitted the ,
processing of.a faulty rod lot because the defect coding was not entered into the computerized data system to prevent further processing. The gamma scan instructions have been revised and the proper defect coding entered into the data system to ensure that defective rods are rejected at the time of inspection to prevent further processing. Physical barriers were installed between pellet production lines to prevent mixing enrichments. The above corrective actions were reviewed during this inspection.
- 8. Clad Defects in One Fuel Pin at Salem Unit No.1: Inspection of a fuel rod at Salem 1 on November 21, 1982, found two holes in the cladding. .W evaluation determined that the holes were caused by hydriding. This fuel was manufactured in 1978 when the control on hydrogen was not sufficient to prevent hydriding. The hydrogen specification was revised in 1981 to minimize the chance of hydride failures and reviewed during this inspection.
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