ML19208A878
| ML19208A878 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 08/09/1979 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Groce R YANKEE ATOMIC ELECTRIC CO. |
| References | |
| TASK-03-02, TASK-03-03.A, TASK-03-07.B, TASK-3-2, TASK-RR NUDOCS 7909180122 | |
| Download: ML19208A878 (4) | |
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August 9, 1979 Docket No. 50-29 Mr. Robert H. Groce Licensing Engineer Yankee Atomic Electric Company 20 Turnpike Road Westboro, Massachusetts 01581
Dear Mr. Groce:
RE: REQUEST FOR ADDITIONAL INFORMATION SYSTEMATIC EVALUATION PROGRAM STRUCTURAL TOPICS YANKEE R0WE NUCLEAR STATION To continue our review of the Systematic Evaluation Program structural topics, we request that you provide the infomation described in the enclosure for each of the identified topics.
Your response is requested within 30 days so triat we can maintain our review schedule.
Sincerely,
' hwg A.
< GrC Cannis L. Zieman ' Chief Operating Reactors Branch #2 Divisien of Operating Reactors
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page 3EiS10.'
7909180Ill P
Mr. Robert H. Groce August 9, 1979 cc Mr. Lawrence E. Minnick, President Yankee Atomic Electric Company 20 Turnpike Road Westboro, Massachusetts 01581 Greenfield Community College 1 College Drive Greenfield, Massachusetts 01301 K M C Inc.
ATIN:
Mr. Richard E. Schaffstall 1747 Pennsylvania Avenue, N. W.
Suite 1050 Washington, D. C.
20006 3US$.O[3
Enclosure YANKEE R0WE NUCLEAR STATION REQUEST FOR ADDITIONAL INFORMATION STRUCTURAL TOPICS Additional information is needed for the following structural topics:
III-2 Wind and Tornado Loads For each safety-related structure, provide:
1.
Design basis for wind loading including:
the vertical wind velocity profiles (or maximum wind speed) a.
b.
gust fac' tor procedures to transform wind data into design pressure c.
2.
Design basis, if any, for tornado loading including:
a.
maximum rotational wind speed b.
translational wind speed c.
pressure drop d.
radius of maximum rotational wind speed e.
procedures to transform tornado data into design pressure III-3.A Effects of High Water Level on Structures For each safety-related structure:
1.
Describe the water loads considered in the original design and the extent to which dynamic effects due to flooding were considered.
2.
Clarify the water level for each load combination discussed in response to items 2 of Topic III-7.B.
III-7.B Design Codes, Design Criteria and Load Combinations For each safety-related structure:
1.
List the codes and standards (including edition date) used for design and construction of concrete and steel elements (Vapor containment, internal structures, primary auxiliary building, diesel generator buildings, control room, etc.).
Edi$.Ob
Enclosure
. 2.
Provide the loads, load combinations and acceptance criteria employed for the design.
3.
Provide the design and/or actual material properties (fc and fy) used for concrete and steel elements.
For concrete, provide the age specified and any admixture used.
4.
Provide a copy of the specifications used for design ano construction.
5.
Provide representative stress levels (compression, tension, and shear) at the critical location of each structure (e.g., at base column of internal structures) for each of the load combinations provided in response to (2) above.
6.
Provide the buckling criteria used in the design of the steel containment shell.
III-7.D Containment Structural Integrity Test Provide a description of the procedures and results of the containment structural integrity test.
3[NO.k/2