ML16340C785
| ML16340C785 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee, Diablo Canyon, Duane Arnold, FitzPatrick, 05000000 |
| Issue date: | 06/23/1982 |
| From: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML16340C784 | List: |
| References | |
| REF-QA-99900513 NUDOCS 8209140071 | |
| Download: ML16340C785 (4) | |
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1 UNITED STATES NUCLEAR REGULATORY COMMISSION REGION IV 011 RYAN PLAZA DRIVE, SUITE 1000 ARLINGTON.TEXAS 76011 JUN 2 3 1982 MEMORANDUM FOR:
Daniel G. Eisenhut, Director, Division of Licensing J
FROM:
John T. Collins, Regional Administrator, Region IV
SUBJECT:
RESULTS OF VPB INSPECTION OF TELEDYNE ENGINEERING SERVICES REGARDING ALLEGATIONS CONCERNING THE FITZPATRICK AND YANKEE ELECTRIC.FACILITIES (VITS 82"39)
The Division of Licensing (D.
G. Eisenhut) requested that Region IV determine the validity and safety significance of concerns expressed to NRC with respect to hydrodynamic analyses and design modifications of the torus and its associated components and piping of the Fitzpatrick and Vermont Yankee Nuclear Plants.
Results of our inspection are summarized i'n Section D.2 of'nspection report 99900513l82-01, attached.
Five nonconformances were identi fied.
The alleger indicated that the use of unqualified individuals, excessive management schedular
- pressure, inaccurate analytical
- models, and use of erroneous input data, could result in possible deficiencies in the
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hydrodynamic analyses for structural integrity, and in the subsequent
. design of internal and extetnal component supports for the Mark I con-
- tainment, and its associated-. catwalks and piping.
Review of available records and interviews with selected engineering, management, and ".contract" personnel did not confirm the allegation that unqualified individuals were used to perform the analyses, nor that mange-ment applied excess schedular pressure to the analysts such that the quality and integrity of the analyses were compromised.
The allegations concerning inaccurate analytical
- models, and the use of estimated dimensional input data for certain preliminary design modifications made in early 1981, were substantiated.
However, it is 'recognized that the design activities performed during 1981 were preliminary in nature, using similar data from similar plants, all of which could be viewed by some as erroneous or inaccurate design methods.
Plants involved in these analyses were J.
A. Fitzpatrick,'Millstone Unit 2,'ine Mile, Point Unit 1, Pilgrim Unit 1, and Vermont Yankee nuclear power plants.
Review of a. sample of design modification drawings transmitted to the affected, plants did not reveal any significant design defect or deficiency 8209140071 820729'DR ADOCK 05000275 P
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'Memo to Eisenhut
-2" that would prevent the torus and t'e suppression system from performing their intended safety functionsduring a
LOCA or system abnormal condition.
Teledyne Engineering Services management stated that all calculations related to the Mark I torus, and its internal'components, would be..
reviewed and redone, as necessary.
These actions will be completed by August '31, '982.
This item will be further'evaluated by VPB during future inspections.
If
~ you would like to discuss the matter, further, please contact. us.
I Attachments':
NRC Inspection Report 99900S13/82-OX John T. Collins Regional Administrator CC:
R.'.
- Heishman, IE R ~
L. Baer, IE J., E.
Gag 1 i ar do, RIV.
E.
H. Johnson, RIV R.'.
- Haynes, RI J.
P.
Knight, AD, CSE
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