From device vendors
| Request | Why |
|---|---|
| Functional safety certificate (scope, SIL, SC, conditions) | SC and validity of use |
| Safety manual | Configuration, diagnostics, proof test procedure, useful life |
| FMEDA report or failure rates λSD, λSU, λDD, λDU, with units | PFDavg and SFF |
| Element type (A or B) and hardware fault tolerance | Architectural constraints |
| Stated proof test procedures and their coverage | PTC |
| Partial stroke coverage for the defined method (valves) | PST credit |
| Useful life and environmental limits | Mission time and renewal |
From the site
| Request | Why |
|---|---|
| Proof test records and failures found | Field data and achieved coverage |
| Actual test intervals and turnaround cycle | T1 |
| Repair times achieved for detected failures | MTTR |
| Bypass records and spurious trips | Periodic review |
| Demands on the SIF in the period | LOPA validation |
Ask First Out AI to turn this into a tailored request for your function: "Give me a data request table for the vendors of the devices in this function."
Written for First Out AI as engineering guidance. It supports engineering work and does not replace it; check every value against your standards, certificates and company rules with a competent functional safety engineer.