Gas Emergency Shutdown and Controlled Blowdown Log

Inspection log for documenting emergency isolation and controlled blowdown of gas facilities, including shutdown verification, pressure readings, vented volume, emission mitigation, and post-event safety checks.

Inspection Details and Event Context

• Event date and time recorded
• Facility, unit, or distribution asset identified
• Trigger for emergency shutdown documented
• Area isolated and access controlled

Isolation and Shutdown Verification

• Emergency shutdown devices activated and verified
• Isolation valves closed and position verified
• Lockout-tagout applied where required
• Residual pressure before blowdown recorded

Controlled Blowdown Measurements

• Initial system pressure recorded
• Final pressure after blowdown recorded
• Estimated vented volume documented
• Blowdown duration recorded

Emission Mitigation and Environmental Controls

• Emission mitigation method selected
• Visible emissions or odor observed during blowdown
• Noise, ignition, or static control measures in place

Post-Event Safety Checks and Restoration

• Gas testing completed and atmosphere verified safe
• All valves, blinds, and temporary connections accounted for
• Corrective actions or follow-up maintenance identified
• Inspector signature