Exploratory Shaft Seismic Design Basis Working Group report; Yucca Mountain Project

Abstract

Their contributions include participating in the working group meetings, providing technical consultation and input to the working group, providing text for the report, reviewing the report's contents, and helping resolve review comments on the report. Their contributions are gratefully acknowledged.

Volume II: near-field and altered-zone environment report

“…For unlined underground excavations in rock, such damage occurs as rock fall, spalling, local opening of rock joints, and block motion. Subramanian et al (1990) have provided recommendations for seismic parameters for the design of the shafts associated with the ESF. Their recommendations are summarized in section 1.22 of the RIB.…”

“…Recommended surface-control motion values that are used for the natural earthquake design are 0.30 g horizontal acceleration and 30.0 cm/s peak horizontal velocity (Subramanian et al, 1990; Attempts to catalogue records of the performance of underground excavations subjected to seismic loading and develop simple empirical design criteria have indicated a damage threshold of approximately 20 cm/s (8 in./s). No damage should be experienced if the peak particle velocity is beneath that threshold.…”

Site characterization progress report: Yucca Mountain, Nevada, October 1, 1994--March 31, 1995, Number 12. Nuclear Waste Policy Act (Section 113)

“…After the release, the breaker addition and replacement will be initiated, with planned completion in FY 1995. (Subramanian et al, 1990) to determine if the proposed seismic design basis was still appropriate given the current configuration of the ESF and the current understanding of seismic hazards at Yucca Mountain. Second, if the proposed basis could no longer be supported, the team was to recommend a new seismic design basis.…”

“…Forecast: The assessment of Subramanian et al (1990) and the ESF Seismic Design Inputs Report will be combined to form the review record of the technical assessment. The completed review record will be submitted.…”

Preliminary near-field environment report; Volume 1, Technical bases for EBS design

“…For untined underground excavations in rock, such damage occurs as rock fall, spalling, local opening of rock joints, and block motion. Subramanian et al (1990) have provided recommendations for seismic parameters for the design of the shafts associated with the ESF. These are summarized in Section 2.1.1 of the RIB.…”