IR 05000423/1982001
| ML20041D274 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 02/10/1982 |
| From: | Chaudhary S, Kakkad P, Lester Tripp NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20041D273 | List: |
| References | |
| 50-423-82-01, 50-423-82-1, NUDOCS 8203050110 | |
| Download: ML20041D274 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
' Region I Report No. 82-01 Docket No. 50-423 License No. CPPR-113 Priority Category A
Licensee: Northeast Nuclear Energy Co.
P. O. Box 270 Hartford, Connecticut 06101 l
Facility Name: Millstone Nuclear Energy Station, Unit 3 Inspection at: Boston, Massachusetts Inspection condu ed:
nuary 13 - 15, 1982
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Inspectors:
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O/N j$. K. ThaMhary, Reactor Inspector datd signed
.L 4 abo /72-t,P. KakkadflStructural Engineer, IE:HQ date signed
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Approved by:
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(.. E. Trypb, Chief, Materials and da'te' si gned Processes Section, EIB Inspection Summary:
Inspection on January 13 - 15, 1982 (Report No. 50-423/82-01)
Area Inspected: A special announced inspection by a regional based iespector and an IE:HQ structural engineer of licensee activities in the resolution of construction deficiencies in the design of rock anchors. The' inspection was conducted at the A-E's corporate headquarters in Boston, Massachusetts.
The inspection involved 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br /> in corporate headquarters by rne regional ~
based inspector and one structural engineer, and 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br /> by regional inspectors offsite.
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Results: No items of. noncompliance were identified.
8203050110 820216 DR ADOCK 050004g3 PDR
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e Details 1.
Persons Contacted Northeast Utilities B. L. Carlson, Assistant Project Engineer
A. K. Gulesserian, Assistant Project Engineer Stone and Webster Engineering Corporation J. P. Allen, Chief Structural Engineer F. B. Baldwin, Assistant QA Manager F. Bearham, Quality Assurance Program Administrator (QAPA)
G. O. Buffington, Assistant Project Engineer W. R. Curtis, Lead Engineering Assurance Engineer
G. F. Dawe, Supervisor - Project Licensing
J. H. Flecher, Project Engineer D. T. Hemmingier, Assistant to QAPA J. W. Kelly, QA Program Administrator
A. S. Lucks, Chief Geotechnical Engineer K. Lakshmipathiah, Senior Structural Engineer
M. R. Matthews, Assistant Superintendent, FQC L. D. Nace, Project Manager
R. J. Rudis, Engineering Assurance Engineer - MP 3
D. C. Shelton, Chief, Engineering Assurance
J. E. Steffano, Assistant Chief Structural Engineer
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F. S. Vetere, Lead Geotechnical Engineer In addition to the above, the inspector met with several other engineers during the course of review and discussions.
(Persons denoted by an asterisk attended the exit interview).
2.
Construction Deficiency in the Design of Rock Anchors in Service and Auxiliary Buildings.
On December 5, 1979, the licensee reported to the NRC - Region I a deficiency in the design of rock anchors in the foundation of the Service building. The deficiency was identified through a licensee audit of the design activities in this area. On December 19, 1979, the licensee further reported that the same problem also existed in
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the design of the Auxiliary building. The two deficiencies were formally reported to the NRC under 10 CFR 50.55(e) by a letter dated January.3, 1980 by the licensee.
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The licensee submitted reports to NRC of their evaluations of these deficiencies on July 30, 1980, and April 21, 1981.
During the review of these reports, NRC required some additional information for clarification and/or justification of the licensee's actions with regard to the
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resolution of these problems.
The requested information and clarifications were provided by the licensee during this inspection.
3.
Review of Design Process, Documentation of Rock Anchor Re-Design and Implementation of Corrective Action The inspector reviewed the supporting documentation and held discussions with cognizent licensee and A/E engineers to examine the thoroughness of the original design review, the process of re-analysis and basic assumptions used in the evaluation for determining licensee corrective actions to fix the deficiencies in design.
In addition to the extensive discussions, including presentation of the rationale used in evaluation and re-analysis, the inspector reviewed the following documents:
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Letter - W. G. Counsil to NRC - Region I, reporting the deficien-cies, dated January 3, 1980.
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Letter - W. G. Counsil to B. H. Grier, dated July 30, 1980.
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Letter - R. T. Carlson to W. G. Counsil, dated January 29, 1981.
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Letter - W. G. Counsil to R. T. Carlson, dated April 21, 1981.
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S & W Specification 918, " Auxiliary Building Rock Dowels", dated July 11, 1980.
Addenda 1 and 2 to the Specification 918.
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S & W Specification 922, " Service Building Rock Anchors", dated February 22, 1979.
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S & W Drawings:
EC-36H-5 EC-350-7 EC-36N-6 EC-35F-3 EC-37E-4 EC-35G-3 EC-370-5 EC-37G-4 EC-7A-8 EC-37N-5 EC-78-6 EC-37P-3 EC-7F-2 EC-37Q-3
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Schematic diagram of dynamic model of the seismic analysis.
Original vs. new.
Based on the discussions and review of the documentation, the inspector determined that the design approach used by the licensee in the re-analysis was adequate and valid, the underlying design assumptions were valid, the corrective actions determined by the re-evaluation were adequate, and the overall design was acceptabl f
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The inspector, however, noted that the sketches submitted with
- April 21, 1981, final report did not clearly depict the locations of modification. The licensee acknowledged this shortcoming and committed to submit updated sketches. This item is closed (79-00-01).
No items of noncompliance were identified.
4.
Exit' Interview At the conclusion of the inspection, the inspector met with the licensee representatives (denoted by an asterisk in paragraph 1). The inspector summarized the scope and the findings of this inspection.
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