Safety Flash
Oxy-arc cutting
Oxy-arc cutting
- IMCA
- Safety Flash
- IMCA SF 07/01
- Control of WorkDivingExplosionHot Work and Fire
- ExplosionHydrogen safety
- Diving operationsHot work
- Competence and trainingIgnition source controlOperational supervisionRisk assessment
- Subsea
Summary
A safety flash describes a diver fatality during subsea oxy-arc cutting, with spark ignition of trapped gas identified as the most likely explosion cause. Company instructions address alternatives, task approval, risk assessment, training and cavity venting, alongside oxygen flow through the Broco rod to prevent electrolytic hydrogen accumulation.
Classifications: Explosion; explosive atmospheres.
Classifications: Hydrogen safety.
Classifications: Diving operations; diving; commercial diving.
Classifications: Hot work; welding and cutting.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Ignition source control; ignition prevention.
Classifications: Operational supervision.
Classifications: Risk assessment; hazard assessment.
Classifications: Subsea; underwater worksite.
Summary
Subsea oxy-arc cutting created an explosion hazard through trapped gas and hydrogen accumulation, requiring strict planning and venting.
IMCA SF 07/01. Themes: control of work, diving, explosion, hot work and fire.