ML17244A860
| ML17244A860 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 09/14/1979 |
| From: | Cheng T Office of Nuclear Reactor Regulation |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-02-04, TASK-03-06, TASK-RR NUDOCS 7910020583 | |
| Download: ML17244A860 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 September 14, 1979 MEMORANDUM FOR:
D. M. Crutchfield, Chief Systematic Evaluation Program Branch, DOR THRU:
FROM:
SUBJECT:
C. Hofmayer, Section Leader Engineering Section Systematic Evaluation Program Branch, DOR T.
M. Cheng Engineering Section Systematic Evaluation Program Branch, DOR
SUMMARY
OF MEETING WITH ROCHESTER GAS AND ELECTRIC CORPORATION AND GILBERT ASSOCIATES - SEISMIC DBE REVIEW OF GINNA NUCLEAR STATION On August 30, 1979, members of the NRC staff and its consultant, Lawrence Livermore Laboratory, met with Rochester Gas and Electric Corporation and Gilbert Associates (attendees listed in Enclosure
- 1) to discuss technical questions related to facility structural details, the dynamic modelling of safety-related structures, and to identify and obtain additional informa-tion which is necessary for, Lawrence Livermore Laboratory to complete their structural modelling and to continue with the SEP seismic review.
The discussions focused on the following items:
'1.
Dynamic model of building complex developed by Lawrence Livermore Laboratory (Auxiliary Building, Intermediate Building, Turbine Building and Control Building) - modelling concepts, coupling between buildings, solution techniques, etc.
2.
Additional information requested by l.awrence Livermor e Labora-tory (Enclosure 2).
3.
Dynamic model of the building complex developed by Gilbert Associates.
4.
Containment internal structures - modelling, seismic input,
- damping, expected results, etc.
The results of the discussions are summarized below.
1.
Both the staff and licensee realized the importance of dynamic coupling between buildings and agreed that the three dimensional coupled frame model developed by Lawrence Livermore Laboratory and the model developed by Gilbert Associates can generate realistic seismic responses of the structures.
2.
In order to avoid duplication of the effort with regar d to structural modelling, the staff and its consultant will use the dynamic model of containment internal structures being developed by the Gilbert Associates to generate the floor response spectra and the structural responses (forces, shears, and moments) for the use in SEP DBE review.
3.
Both the staff and licensee agreed that the steel framing of the pressure shielding steel diaphragms located between Turbine Building and Control Building and between Turbine
'Building and Diesel Generator Room should be included in the dynamic model.
4.
The Lawrence Livermore Laboratory balance-of-plant model will be used by the staff and its consultants to evaluate the Gilbert Associates'esults.
Enclosures:
As stated Thomas M. Cheng Engineering Section Systematic Evaluation Program Branch Division of Operating Reactors
ENCLOSURE 1
MEETING August 30, l979 SUBJECT-Ginna Station SEP Seismic ATTENDING:
Chang Chen Te-Hung Chen Thomas M. Cheng Jim Hutton Chih Y. Liaw Thomas A. Nelson GAI GAI NRC RG GE EGGG LLL Frank X..Rehill Pan C.
Shah Bob Smith Terry Weis George Wrobel GAI GAI RGGE RGGE RG&E
ENCLOSURE 2 Information Needed for Ginna Review:
1.
Mass distributions for Turbine, Aux, and Int. buildings.
Need location of heavy equipment not just lb/ft2 uniform loading.
2.
Clarify floor loadings for Turbine Building.
We have for basement 675 psf dead load, 25 psf equipment weight, operating floor 140 psf dead load, 35 psf equipment weight.
3.
Clarify joint details in Turbine, Aux, and Int. Building floor to column connections, column splices, bracing connection, connections of facade structure to adjacent buildings.
5.
Provide member. forces due to dead weight analysis in Turbine, Aux, and Int. Buildings.
Provide structural drawings for Diesel Room, Control Room, Switchgear
- Room, and Battery Room.
6.
Discuss effects of Office Building, Diesel Room and Control/Switchgear/
Battery Room on coupled system.
7.
Discuss concrete block walls
. Between.intermediate building and turbine building Between column lines F
E G in west facade wall Between intermediate building and service building 8.
Will they affect lateral stiffness of the structurel If so, Provide thickness, reinforcement, cells grouted.
How are walls attached to steel framing'?
'. 'ow are floors attached to steel girders?
Any composite sections7 10.
How @re horizontal trusses attached to facade wallsl There appear to be two horizontal members attached to the facade walls columns at the truss locations.
Where is Category I equipment located'ny on steel frame supported floors2 e.g.,
intermediate building7 12.
Are columns continuous from Turbine building wall up through facades