3 ms·
Was it safe? I mean was there any chance that the system could be turned on and injure the person crawling? I was trying to imagine a 1/4 mile crawl in a small
by dm2 13y ago
Was it safe? I mean was there any chance that the system could be turned on and injure the person crawling?
I was trying to imagine a 1/4 mile crawl in a small tube as an engineer and was just thinking, "NOPE." but if I had built the system and it was near 100% safe, maybe...
- walshemj 13y agoI presume they used standard safety procedures (Lockout/Tagout) everyone working in the tunnel locked the controls to off with their own lock and took the key with them into the tunnel. https://en.wikipedia.org/wiki/Lockout-tagout https://en.wikipedia.org/wiki/Lockout-tagout