Document: NUREG-0800
Document ID: 45f5d841-54ef-4876-be3e-86eafc6ca90a
Document Type: srp
Title: Each calculated spectrum of the artificial time history is considered to envelop
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12352A305.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.0
CFR Part: 
CFR Title: 

Content:
ped, 1.0 g, target response spectrum at all frequencies above 0.25 Hz, the PSD specified in Tables 1 through 4 can be used with the resulting time history being clipped at ±1.0 g (see NUREG/CR-3509). To produce a response spectrum that conservatively envelops the 1.0 g target response spectrum at 2 percent damping and greater, a PSD set at 130 percent of the PSD specified in Tables 1 through 4 can be used with the resulting time history being clipped at ±1.0 g. Table 1 – Central and Eastern US Rock Sites frequency (hz) 0-50 km 50-100 km 0-10 km 10-50 km 50-100 km 100-200 km 0-10 km 10-50 km 50-100 km 100-200 km in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 in 2/sec3 0.3 0.73 0.05 7.72 1.76 0.88 7.72 1.76 0.88 0.4 0.95 0.07 10.39 3.61 1.69 4.76 10.39 3.61 1.69 4.76 0.5 1.19 0.09 15.55 6.95 3.08 9.52 15.55 6.95 3.08 9.52 0.6 1.55 0.12 21.44 9.16 4.93 14.45 21.44 9.16 4.93 14.45 0.7 1.96 0.18 24.60 10.49 6.92 18.08 24.60 10.49 6.92 18.08 0.8 2.43 0.27 26.74 11.18 7.90 20.16 26.74 11.18 7.90 20.16 0.9 2.87 0.40 31.62 12.71 10.46 22.86 31.62 12.71 10.46 22.86 1