If H2S exposure is anticipated, fixed monitoring devices aboard a MODU should have a low level concentration alarm to alert personnel. at what concentration level will the alarm activate?

Correct Answer: Option A — 10 PPM

Offshore safety standards and 46 CFR requirements for Mobile Offshore Drilling Units (MODUs) dictate that fixed hydrogen sulfide (H2S) monitoring systems must trigger a low-level visual and audible alarm at 10 PPM to protect personnel.