ML20151X083
| ML20151X083 | |
| Person / Time | |
|---|---|
| Issue date: | 09/02/1998 |
| From: | Bohannon L, Pool S NRC OFFICE OF ADMINISTRATION (ADM), STANFORD UNIV., STANFORD, CA |
| To: | |
| References | |
| CON-NRC-G-04-95-075, CON-NRC-G-4-95-75, CON-NRCG-04-95-075, CON-NRCG-4-95-75 NUDOCS 9809160255 | |
| Download: ML20151X083 (2) | |
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OCb MODIFICATION NO. 2 TO GRANT NO. NRC-04-95-075 BETWEEN STANFORD UNIVERSITY AND THE U.S. NUCLEAR REGULATORY COMMISSION The purpose of this modification is to extend the period of performance of this grant through November 30,1998 and no additional cost or obligation to the Govemment and to authorize the rebudgeting of funds due to indirect rate changes to the efforts described on the attached modification description. Therefore, the Govemment hereby accepts the Grantee's letter dated July 17,1998 subject to the time and work descriptions mentioned above. Accordingly, the following change is hereby made:
- 1. Block No. 3, Grant Period, is deleted in its entirety and replaced with the following:
"FROM: 8/31/95 TO: 11/30/98" l
l 2. The attached modification description is added to block 9 of the grant award and modifies the grantee proposal for the last three months of the grant effort.
. All other terms and conditions remain unchanged, including the grant ceiing amount of l $100,000.
l This mooification does not obligate any FY 98 funds.
EXECUTED GRANTEE United States of America U.S. Nuclear.Regylstory Commission BY: BY: uf 1A // 'k
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NAME: NAME: Steohen M. Pool LESUE A. BOHANNON GRANTS OFFICER SEP 0 TITLE: TITLE: Grants Officer 2 Men
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,' ],L e i Internal reference no. RES ID RES-C98-501 1 ". ^' F ,1 1 9809160255 980902 PDR CONTR .
NRCG-04-95-075 PDR l
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STANFORD UNIVERSITY GRANT NRC-04 95-075 l l
MODIFICATION c2. I Develop a " load and resistance factor" (LRFD) format based on the " risk-equation" and the previous project developments. These latter developments combine conventional probabilistic seismic hazard analysis with statistical analysis of nonlinear dynamic analyses of structural l models to produce " displacement demand hazard curves". Putting these developments into a l
more conventional engineering format will facilitate their use in practice. The grantee shallt also incorporate the epistemic uncertainty either in similar factors or in the format of a "confid?nce limit' on 7.he structure's "10-4' interstory drift or ductility, where 10-4 is the annual probability of exceedance. Such epistemic uncertainty resides both in the PSHA and in the dynamic analysis, e.g., in the latter case because only a small finite sample of accelerograms has been used to estimate the mean and variance of the nonlinear response (to records of given intensity).
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