NUREG-0003, Advises of Issuance of NUREG-0003, Statistical Studies of Vertical & Horizontal Earthquake Spectra. Explains Conclusion as Opposed to Reg Guide 1.60.PT Kuo Prof Qualifications Encl
| ML19331B531 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 07/22/1976 |
| From: | Sihweil I Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19331B489 | List: |
| References | |
| NUDOCS 8008120397 | |
| Download: ML19331B531 (5) | |
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UNITED STAT [$
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Jul. 2 3 M Members, Structural Engineering Branch RESPONSE SPECTRA IN THE VERTICAL DIRECTION Subsequent to the issuance of Regulatory Guide 1.60, Nathan M.
t'ewmark Consulting Engineering Services perfomed for us an additional statistical study of ground motions for a number of horizontal and vertical components of strong motion earthquake records to deter-mine the dependence of design response spectra on the earthquake ground acceleration level. The final report on this study entitled
" Statistical Studies of Vertical and Horizontal Earthquake Spectra" was issued M January 1976 by NRC as Report No. NUREG 0003.
One o' the important conclusions of this report was that the rescon_se spec' rum for vertical motion een be taken as 2/3 the caennnca e nac +mm W
. nnta i motion over tha entire rance of fracitancies in the Wes te rn United Sta tes. According to segulatory Guide 1.60, tne vertical response spectrum is equal to the horizontal response spectrum between 3.5 cps and 33 cps. To be consistent with the latest available data in NUREG 0003, we will allow acolicants the ootion of takino the vertical design response scectrum as 2/3 tne norizontal re<nenca (n-c trum over twentire ranca or rrecuencies in tne Wastern Uni ted States ([nly) For other locations, the vertical response spectrum o i s ue the same as that given in Regulatory Guide 1.60.
/.14.h tf W L I. Sihweil, Chief Structural Engineering Branch Division of Systems Safety cc:
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PROFESSIONAL QUALIFICATIONS PAO-TSIN KUD U.S. NUCLEAR REGULATORY CCMMISSICN STRUCTURAL ENGINEERING BRANCH DIVISION OF SYSTEMS SAFETY I am a Structural Engineer responsible for review and evaluation of design criteria for structural systems, static and dynamic ar.alyses, design, and testing of safety-related structures, and the criteria for protection against the adverse effects associated with natural environ-mental loads and postulated failures of fluid systems for nuclear facilities.
I received an Engineering Diplcma in Civil Engineering from Taipei Institute of Technology in 1958, a M.S. degree in Civil Engineering from North Dakota State University in 1966, and a Ph.D. degree in Civil Engineering fren Rice University in 1974.
I completed my graduate studies all under scholarships and fellcwships. My major fields of studies included structural dynamics, engineering mechanics and earthquake engineering in particular.
I was elected to be a member of Sigma Xi honor society in 1970. Currently, I am a member of both Earthquake Engineering Researen Institute and Anerican Society of Civil Engineers.
I am also a registered Professional Engineer in the State of Maryland.
From September 1958 to June 1960, I served as a commissioned lieutenant officer with Chinese Marine Corps. During the last eight months of this period I also served as a field engineer involved in the reconstruction of a reinforced concrete dam destroyed by a record flood.
From July 1960 to June 1961, I was employed by Taiwan Water Conservancy Sureau as a civil engineer involved in embankment line layout.
From July 1961 to March 1965, I joined Keelung Harbor Bureau in Taiwan, l
China.
I served as a field structural engineer responsible for construction I
O 2-of a number of harbor structures including both steel and reinforced concrete structures.
From April 1965 to September 1965, I was employed by John A. Mackel and Associates in Los Angeles, California as a Designer responsible for analysis and design of highrise commercial buildings.
Imediately after I received my MSCE degree, I was employed as a Senior Design Engineer by Cushing and Nevell Tecnnical Design Corporation on contract to Ebasco Services, Inc. in New York City from July 1966 to August' 1967. During this period I was primarily concerned with the structural analysis and design for a commercial nuclear power plant.
From liarch 1971 to May 1975 I was associated with Bechtel Power Corporation in Gaithersburg, Maryland. Between the years of 1971 to 1973, I served as a Senior Engineer in charge of seismic analyses for a commercial nuclear l
power plant.
I was also responsible for reviewing and approving the seismic qualifications of mechanical and electrical equipment by either analytical means or laboratory testing. During this period I was also engaged in impact analysis for cask drop and aircraft impact and in developing design criteria and methods for pipe whip restraint design.
l Between the years of 1973 to 1975, I served as an Engineering Specialist I
responsible for reviewing and establishing criteria for seismic analyses of structures, performing speciali:ed investigative studies in the seismic analysis area, and advising the Chief Engineer concerning problems related to sesimic analyses and design.
Representing the Gaithersburg Division, I also served as a member of the Bechtel Seismic Task Force Comittee during the period from 1972 to 1975.
The Comnittee had the responsibility of establishing the corporate s andards related to seismic analyses and design.. We co-authered the Bechtel topical report, GC-TOP-4A, entitled " Seismic Analyses of Structures and Ecuipmen:
for Nuclear Power Plants" which is widely referenced by the nuclear industry.
In June 1975, I joined the Nuclear Regulatory Commission and have remained with this organization since. During this time, I have participated in the review.and evaluation of many construction permits and operating licenses and in the generic review of topical reports, seismic analysis methodology, and structural aspects of suppression pool dynamics.
I have also partic-ipated in the NRC sponsored confirmatory research activities related to seismic analyses.
I have also served as a member of AISC Nuclear Specification Task Comnittee III responsible for writing the nuclear specification (ANSI N690).
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