Iec 61508-7 -

Not fancy. Not new. Just a table. On the left: “Technique.” On the right: “Recommended SIL.” Buried in the footnotes:

I spent that night cross-referencing. Section B.6.9 (Software error effect analysis) with D.2.2 (Diverse programming). I realized: our single codebase was the real hazard. The counter overflow was trivial to fix. But what other latent overflows were sleeping in the memory? iec 61508-7

“How long?”

“It’s in the standard,” I said, sliding the open binder toward her. Page 147. Table C.5: “Diverse programming – Recommended for SIL 3 and SIL 4.” Not fancy

Dr. Aris Thorne, Principal Systems Engineer, Hailstone Automated Mining ” I said