Nuclear Seismic Qualification: seismic_category_ii
Seismic qualification requirements for nuclear power plant safety-related equipment per IEEE 344-2013, NRC Regulatory Guide 1.100 Rev.4, and NRC RG 1.60/1.61. Covers equipment seismic categories (Class 1E, Category I/II, non-seismic), test levels (OBE/SSE in g), Required Response Spectra (RRS) frequency ranges, damping ratios, fragility parameters (median capacity Am, randomness beta_R, uncertainty beta_U, HCLPF) by equipment class (switchgear, MCC, I&C panels, diesel generators, pumps, valves, piping, tanks), and anchorage design requirements.
| equipment category | qualification parameter | description | notes | qualification method | seismic category |
|---|---|---|---|---|---|
| seismic_category_ii | design_intent | Seismic Category II: not safety-related but must not collapse onto or impair Category I equipment. | Designed to prevent interaction (falling, swinging, flooding) with Category I SSCs. Typically requires Seismic Category II analysis per ASCE 7 or equivalent. | analysis,documentation | Seismic_Category_II |
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