Implications of Revised Seismic Spectra for Eastern North America on Response of Nonstructural Components and Piping
Bibliographic record
Abstract
The seismic response and qualification of nuclear power plant related building structures and non-structural components are affected by the sub-systems’ dynamic properties as well as the external excitation level and characteristics; to which these subsystems are subjected in a seismic event. Recently a great interest in the seismic characteristics of Eastern North America has resulted in the revision of the methodology used to develop response spectra for Nuclear Power Plant (NPP) sites including Eastern Canada. Currently site specific Uniform Hazard Spectra (UHS) are developed based on updated data that is specific to the continental East North America region and modified ground motion prediction equations. The revised UHS exhibit higher amplification in the high frequency range as compared to standard spectral shapes traditionally used in CSA/CAN3 289.3 for 1981. This paper presents the numerical results and observations for an investigation aimed at identifying the effect of these revised UHS spectral shape on the response on non structural components including piping typically requiring seismic qualification in NPPs.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".