IR 05000373/1979010
| ML19270F927 | |
| Person / Time | |
|---|---|
| Site: | LaSalle, Byron  |
| Issue date: | 02/23/1979 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| References | |
| 50-373-79-10-01, 50-373-79-10-1, 50-374-79-04, 50-374-79-4, 50-454-79-04, 50-454-79-4, 50-455-79-04, 50-455-79-4, NUDOCS 7904040038 | |
| Download: ML19270F927 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-454/79-04; 50-455/79-04 50-373/79-10; 50-374/79-04 Docket No. 50-454; 50-455 License No. CPPR-130; CPPR-131 50-373; 50-374 CPPR-99; CPPR-100 Licensee: Commonwealth Edison Company P. O. Box 767 Chicago,
.L 60690 Facility Name: Byror. Nuclear Generating Station, Units 1 and 2 La Salle County Station, Units 1 and 2 Inspection At:
Wiss, Janney, Elstner and Associates, North Brook, IL Inryco, Incorporated, Melrose Park, IL Inspection Conducted: January 19, February 1, 5, 6, 1979 Inspectors:
. C.
awkin
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G. F. Maxwell'
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Approved By:
D.
. hayes, Ch e
.2!33/79 Engineering Support Section 1
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Inspection Summary Inspection on January 19, February 1, 5, 6,1979 (Report No. 50-454/79-04; 50-455/79-04; 50-373/79-10; 50-374/79-04)
Areas Inspected: Licensee corrective actions relative to reportable deficiencies per 10 CFR 50.55(e); observation of tendon system performance tests at Wiss, Janney, Elstner and tssociates; reviewed the proposed Inryco, Inc. tendon performance test program; observation of CECO followup audit of Inryco, Inc. The inspection involved a total of 30 inspector-hours by two NRC inspectors.
Results: No items of noncompliance or deviations were identified.
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DETAILS Persons < ntacted Principal Licensee Employees G. Marcus, Director of Quality Assurance
- B. Wood, Quality Assurance Engineer
- J. Kodnick, Quality Assurance Mechanical Coordinator Wiss, Janney, Elstner and Associates
- S. Pinjarkar, Engineering Representative
- T. Brown, Technical / Sales Representative Inryco, Incorporated
- C. Marykiewicz, Concrete Systems Controller
- J. Heise, Contract Administration Manager
- G. Chadha, Chief Engineer
- J. Van Horne, Construction Services Manager
- D. Waitkus, Quality Assurance Supervisor
- H. Hendrickson, Quality Control Supervisor
- Denotes those attending the February 5,1979, exit interview at Inryco, Inc.
- Denotes those attending the January 19, 1979, exit interview at Wiss, Janney, Elstner and Associates.
Functional or Program Areas Inspected From January 19, to February 6, 1979, Region III personnel witnessed post-tensioning tendon system performance tests performed at the Wiss, Janney, Elstner and Associates laboratory and monitored the Commonwealth Edison Company follow-up audit of those unsatisfactory conditions in the Inryco, Inc. shop, identified by CECO audit report No. 1-78-61.
1.
Wiss, Janney, Elstner and Associates (January 19, 1979)
The inspector met with representatives of Inryco, Inc. and Wiss, Janney, Elstner and Associates to witness the in-process high cycle dynamic tensile test being performed in accordance with ACI-ASME Code Section III, Division 2, CC-2463.3.
The purpose of the inspection was to review the test program and observe the extent of splitting, undersize and eccentricity exhibited by the button-heads being tested.
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The high cycle dynamic tensile test was conducted on a 30 wire tendon consisting of 12% relaxation Armco wire. The tendon was subjected to 500,000 cycles of stress variation from 60% to 66%
of the minimum specified ultimate tensile strength. The following is a summary of the measurements of 60 buttonheads, performed prior to the high cycle test in accordance with the Inryco Button-head Criteria 1610.
a.
Fifty-nine buttonheads were outside of the 1610 criteria.
b.
Thirty-four buttonheads exceeded the maximum eccentricity of 0.010 inches; maximum eccentricity of an individual buttonhead was 0.044 inches.
All buttonheads were within the height tolerance of the 1610 c.
criteria.
d.
Maximum size of split / slip in any buttonhead was 0.180 inches.
Maximum sum of split / slip in any buttonhead was 0.190 inches.
e.
The results and conclusion of this and other tests will be included in the final reports, pursuant to the 50.55(e) identified for both La Salle and Byron stations concerning buttonhead splitting.
2.
Inryco, Inc. (February 1, 5 and 6, 1979)
The inspectors monitored the follow-up audit conducted by a.
CECO Quality Assurance personnel; relative to CECO audit of Inryco, documented in CECO audit report 1-78-61.
As a result, the inspectors noted:
(1) The CECO Quality Assurance (QA) personnel indicated that they planned to close only one (1) of the eight (8)
findings, which were identified in the audit report.
The finding which was closed (audit finding No.7) was concerned with Inryco, Inc. not conducting audits at specified frequencies and Inryco audit checklists not containing specific questions and measurement criteria.
(2) The CECO QA personnel indicated that they planned to close two (2) of the four (4) observations which were identified in the audit report.
Those to be closed were: concern about visual inspections of buttonheads being conducted without adequate lighting; concern that the procedure for buttonhead tensil test was not being maintained by Inryco at the work location.
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b.
On February 15, 1979, the inspector contacted (by telephone)
the CECO Quality Assurance Director. The inspector was informed that Inryeo had begun fabrication of post-tensioning tendons for the Byron site on the morning of February 8, 1979. He further stated that a "stop work" directive was re-issued by CECO QA on the evening of February 8,1979; af ter the completion of two tendons. The CECO Quality Assurance Director indicated that tha "stop work" directive will remain in ef fect until CECO QA personnel verify, by rev.dit, that Inryco has satis-factorily resolved the following; (1) The production status identification of tendons, by the use of status indicator tags.
(2) Jaeger eye examination of inspection personnel, administrated by medically certified personnel.
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(3) Traceability of calibrated and un-calibrated measuring and test equipment.
(4) Documented instructions / procedures to assure that materials are properly segregated, tagged and/or identified to prevent use of nonconforming material.
No items of noncompliance were identified.
Exit Interview The inspectors met with site staff representatives (denoted under Persons Contacted) at the conclusion of the inspection on January 19, 1979, and February 6, 1979. The inspectors sum =arized the purpose of the inspection.
The licensee acknowledged the findings reported herein.
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