Statement
Demonstrate bounded material accounting with a declared system boundary, interval, inventories, flows, losses, maintenance media, and measurement uncertainty, plus independent emergency reserves, manual control, and recovery from contamination.
Evidence dimensions
- Basis
- normative
- Readiness
- operational
- Confidence
- strong
Assessment rationale
This is an evidence-admission and safety rule grounded in mass balance, metrology, verification, validation, independent reserves, and recovery rather than a claim that closure is achieved.
Citations and locators
- NASA Systems Engineering Handbook (opens external site in a new tab)
Verification, validation, intended environment, interfaces, risk, and technical assessment. · direct method - Advanced Life Support Baseline Values and Assumptions Document (opens external site in a new tab)
Declared life-support flow values and assumptions. · direct method - NASA Achieves Water Recovery Milestone on International Space Station (opens external site in a new tab)
Bounded operational recovery, treatment, and quality-verification example. · context only
Assumptions and limits
The assessment applies to this bounded statement and the cited source scopes. A source can support one relationship without validating a generation ship, and an editorial grade does not substitute for independent review or representative demonstration.
What would change this conclusion?
A stronger independently reviewed assurance standard that preserves system boundary, interval, inventories, flows, losses, uncertainty, manual control, reserves, and fault recovery could replace this rule.
Editorial record
- Prepared by: GShips Project
- Last reviewed: 2026-07-25
- Review status: substantive editorial review
- Reviewer: GShips Project editorial synthesis
- Independent review: pending two person required
- Conflicts: Publisher intends to explore a commercial venture based on some GShips work.
- High-consequence domains: life-support-continuity, medical