ML19296B307
| ML19296B307 | |
| Person / Time | |
|---|---|
| Issue date: | 01/16/1980 |
| From: | Ahearne J NRC COMMISSION (OCM) |
| To: | Udall M HOUSE OF REP., INTERIOR & INSULAR AFFAIRS |
| Shared Package | |
| ML19296B308 | List: |
| References | |
| NUDOCS 8002200389 | |
| Download: ML19296B307 (1) | |
Text
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January 16, 1980 CHAIRMAN The Honorable Morris K. Udall, Chairman Subcommittee on Energy and the Environment Committee on Interior and Insular Affairs United States House of Representatives Washington, D. C.
20515
Dear Mr. Chairman:
Your letter dated December 3,1979 requested clarification of previous NRC statements regarding the use of the algebraic summation technique in the seismic design of nuclear power plants.
Following receipt of your letter, Dr. Henry Myers of your staff contacted individuals in the NRC's Office of Nuclear Reactor Regulation to discuss this issue.
In response to Dr. Myers' request, the enclosed letter from Darrell Eisenhut was sent on December 12, 1979.
The NRC's position is that from a mathematical and engineering standpoint, the use of the algebraic summation of incoherent forces and displacements obtained by spectral analysis in the seismic design of nuclear power plants is incorrect.
Mr. Denton's letter of November 28, 1979 to you contains a more detailed discussion of the. background of this matter and the results of our current analyses.
Sincerely,
(
l' hgQ John F. Ahearne
Enclosures:
1.
D. Eisenhut letter to Dr. Henry Myers, December 12, 1979 2.
H. Denton letter to Rep. Morris Udall, November 28, 1979 cc: Rep. Steven Symms 8002200.3 7 7