- Mobile, offline and isolation-control boundary:
- A vendor case study proves that one mining implementation used a full online/offline mobile workflow, QR isolation checks and permit hard stops. Do not generalize this to every module or deployment. Test device support, cached data, authentication expiry, competing edits, QR exceptions, failed sync, unconfirmed-isolation blocking and restoration authority against the buyer's procedure.
- Operational-data and model governance:
- For Dynamic Risk Pathways and emergency response, inventory every source system and define ownership for bowties, barrier status, thresholds, response plans and stale or missing data. Validate how operators distinguish a software indication from an authorized operational decision.