H2S Emergency Drill Log
Document hydrogen sulfide emergency drills for your site H2S program. Track participants, response times, and corrective actions.
Why H2S Drills Are Critical
Hydrogen sulfide (H2S) is one of the most dangerous hazards in oil and gas operations. This colorless gas smells like rotten eggs at low concentrations but can cause olfactory fatigue at higher levels, making it impossible to smell. At 100 ppm (the IDLH level), H2S can cause rapid unconsciousness and death within minutes.
Regular H2S emergency drills help crews practice the alarm, wind check, evacuation route, muster, and accountability steps in the site plan. Texas RRC Rule 36 requires H2S training and, when its exposure triggers apply, contingency planning and additional safeguards. It does not prescribe a universal quarterly drill schedule.
100 ppm = IDLH
Immediately Dangerous to Life or Health. Rapid unconsciousness possible.
Heavier than Air
H2S collects in low areas, cellars, and confined spaces. Check wind direction.
Plan-Specific Schedule
Follow the operator contract, company plan, and standards that govern the site.
What to Document in Your H2S Drill Log
Location & Details
- Company name, rig/location, well name
- Drill date, time, and type
- Weather conditions and wind direction
- Expected H2S concentration (if applicable)
Participants & Results
- All participant names and signatures
- Evacuation/response time measured
- Equipment checks (SCBA, alarms, monitors)
- Deficiencies and corrective actions
Types of H2S Drills
Evacuation Drill
Practice orderly evacuation to safe briefing areas and muster points. Time the evacuation and verify all personnel are accounted for.
Rescue Simulation
Simulate rescue of an incapacitated worker from an H2S environment using SCBA equipment and rescue teams.
Monitor Calibration Check
Verify all H2S monitors are properly calibrated and alarming at the thresholds defined by the applicable site plan, exposure standard, and operator requirements.
Communication/Alarm Test
Test alarm systems, windsocks, and communication equipment. Verify all personnel can hear alarms from their work areas.
Frequently Asked Questions
Need to Track H2S Drills Across Multiple Rigs?
BasinCheck helps safety managers track H2S drills across all locations, schedule reminders to match their chosen policy, and maintain audit-ready documentation.