An explosion happens in seconds. The chaos after it can last minutes that feel like hours, and what your team does in those minutes determines who walks out of hospital.

The Health and Safety Authority is clear that employers in high-risk industrial environments must have trained first responders capable of managing trauma until emergency services arrive. The gap between what the regulations require and what most sites actually have in place is wide. Surveys of industrial workers after recent explosion incidents in Ireland and the UK found the majority could not correctly describe the priority sequence for managing a blast casualty. That is not a training problem. That is a planning failure.

What an Explosion Actually Does to the Body

Blast injuries are not just burns. They are a category of their own, and treating them only as burns gets people killed.

The HSA and international emergency medicine break blast trauma into four types. Primary blast injury comes from the pressure wave itself. It ruptures eardrums, collapses lungs, and tears hollow organs. A person can look fine, be standing and talking, and be dying from a pulmonary blast injury. Secondary blast injury is fragmentation, shrapnel, debris. Tertiary is the body being thrown and striking something. Quaternary covers burns, chemical exposure, and crush from structural collapse.

Most untrained responders see the visible burns and the obvious bleeding and miss the person in the corner who took the overpressure full in the chest. That person needs oxygen and hospital, now, not reassurance.

The Priority Order on Scene

Do not run in. Confirm the scene is safe and the ignition source is controlled before anyone approaches. One explosion can precede another. This is not overcaution. It is the reason secondary responders become casualties.

Once safe:

Call 112. Do it first. Do not wait to assess. Do it while approaching.

Triage quickly. In a multi-casualty incident, you need to sort before you treat. Anyone unconscious and not breathing is tagged last. Anyone breathing and responsive gets immediate attention. Anyone walking and talking can wait briefly.

Manage catastrophic bleeding first. A blast fragment to the femoral artery kills in under three minutes. Pack the wound and apply direct pressure. A tourniquet on a limb wound is appropriate here. Severe bleeding won't wait for the ambulance and blast injuries produce it fast.

Assume spinal injury. Any victim thrown by the blast, or struck by debris, has a potential spinal injury until hospital says otherwise. Do not move them unless the scene becomes immediately life-threatening.

Burn Treatment on Site

Industrial burns from explosions are often partial or full thickness and cover larger body surface areas than a typical workplace burn. The rule of nines is the standard field tool: each arm is 9% of body surface area, each leg 18%, the torso front 18%, torso back 18%, head 9%.

Burns covering more than 20% of body surface area in an adult are a major medical emergency regardless of depth.

Cool the burn. Run cool, not cold, water over the burn for a minimum of 20 minutes. This is the single most effective first aid intervention for burns. Not ice. Not butter. Not any industrial solvent or lubricant someone suggests in the panic. Water, 15 to 25 degrees Celsius, for 20 minutes. Starting this within three hours of the burn still reduces depth and pain significantly.

Cover it. Cling film is the recommended cover in pre-hospital burn care. It reduces infection risk, limits heat loss, and does not stick. Do not wrap it around a limb or the airway. Lay it over the burn. If no cling film is available, a clean non-fluffy material is acceptable.

Do not remove clothing fused to skin. Cut around it.

Do not burst blisters. Intact blisters are sterile barriers. Breaking them is opening a wound.

Manage heat loss. A patient with extensive burns loses body heat fast. Cover unburned areas with a foil blanket if available.

For chemical burns specifically, the approach differs: brush off dry chemical before applying water, and flush for longer, at least 30 minutes. Know your site's hazardous substances because the first aid response changes depending on what caused the burn.

Managing the Airway After an Explosion

Inhalation injury is the number one cause of death in burn patients. The upper airway swells rapidly after exposure to heat, smoke, or superheated gases. A patient who is breathing fine at minute two can have a critically compromised airway at minute fifteen.

Warning signs: singed nasal hair, soot around the mouth or nose, a hoarse voice, stridor, or any patient who was in an enclosed space during the explosion. All of these mean airway compromise is likely incoming. Keep the patient upright if spinal injury is not suspected. Do not leave them.

If the patient loses consciousness and stops breathing, start CPR. Blast casualties respond to CPR. Do not assume that blast trauma makes resuscitation futile.

What the HSA Expects Your Site to Have Ready

Under the Safety, Health and Welfare at Work Act 2005 and the General Application Regulations, employers must provide first aid equipment and trained personnel appropriate to the risks present. A chemical plant, a quarry, or any facility handling explosive materials must go beyond the standard kit.

The HSA expects:

  • A written emergency response plan specific to explosion risk
  • Trained occupational first aiders, not just basic aiders, on every shift
  • A first aid kit that includes burn dressings, tourniquets, foil blankets, and wound packing material
  • Regular drills that include realistic casualty simulation
  • Clear communication routes to emergency services, including grid references for rural or large industrial sites

A first aid box with plasters and an instruction leaflet does not meet this standard. The HSA's published guidance on first aid provision makes this explicit, and inspectors check it.

The Turn

The pattern in post-incident reviews of industrial explosions is consistent: the injuries were survivable, the response was not adequate, and the gap was training that existed on paper but not in practice. A course completed three years ago and never revisited is not a prepared workforce.

Run a scenario. Not a slideshow. Put your first responders in front of a simulated casualty and see what they do. You will find out very quickly what the training actually retained.

The ambulance will come. What happens in the eight to twelve minutes before it arrives is yours to own.