# Nuclear Stockpile Stewardship **Domain:** Austin Research / Concepts **Doc Type:** Corpus analysis **Source basis:** Supplied research cluster with linked references; see the [[wiki/Austin Research Evidence Map|evidence map]] for verification scope. **Nuclear Stockpile Stewardship** is the scientific and engineering maintenance of confidence in nuclear weapons through assessment, surveillance, experiments, and modeling. In this cluster it supplies the consequential predictive problem behind ASC and [[wiki/Predictive Science Academic Alliance Program|PSAAP]]. Restrictions on full-scale explosive testing increase reliance on models and other forms of physical evidence. Verification checks numerical implementation; validation tests suitability against physical observations; uncertainty quantification evaluates how remaining limitations affect predictions. These questions make confidence part of the engineering task. The Austin master uses stewardship as a genealogy for predictive trust, then follows [[wiki/PECOS|PECOS]] and Oden into other applications. This is an account of methodological transfer, with the validation burden renewed for each new system. ## Connected entries [[wiki/National Nuclear Security Administration|National Nuclear Security Administration]] · [[wiki/Advanced Simulation and Computing|Advanced Simulation and Computing]] · [[wiki/Predictive Science Academic Alliance Program|Predictive Science Academic Alliance Program]] · [[wiki/Verification Validation and Uncertainty Quantification|Verification Validation and Uncertainty Quantification]] ## Sources and corpus context - [[research/The Austin Executable Loop|The Austin Executable Loop — master document]] - [NNSA Announces Selection of the Next Round of Predictive Science Academic Alliance Program Centers](https://www.energy.gov/nnsa/articles/nnsa-announces-selection-next-round-predictive-science-academic-alliance-program) - [U.S. Nuclear Weapon Computer Simulations](https://2009-2017.state.gov/t/avc/rls/202014.htm) **Cluster:** [[wiki/Austin Executable Loop|Austin Executable Loop]] · [[wiki/Austin Research Evidence Map|Austin Research Evidence Map]]