First Aid, CPR & Emergency Response in the Heavy-Truck Shop

Why Emergency Response Training Belongs in the Shop

A diesel service shop is a demanding environment. Technicians work alongside high-voltage hybrid and electric systems, compressed air and fuel, heavy rotating components, hydraulic lifts, and sharp metal edges. Injuries can happen quickly, and the nearest hospital may be miles away. Your ability to act correctly in the first few minutes of an emergency — before EMS arrives — is the single biggest factor in whether a coworker survives a cardiac arrest or keeps a limb after a severe laceration. This lesson teaches you to be that person.

The Emergency Response Chain in a Diesel Shop

Every shop should have a written emergency action plan (EAP) posted and communicated to all employees — OSHA requires it for most workplaces. The chain looks like this:

1. Recognize the emergency. Stop work. Make the scene safe for you before you approach — check for live electricity, spilled fuel, or moving equipment.

2. Call for help. Shout for a coworker, then call 911 (or have someone else call while you act). Give the shop address, nature of injury, and your name.

3. Notify the supervisor. Even mid-emergency, someone must inform the supervisor so the EAP activates — they secure the shop, clear the bay, and meet EMS at the entrance.

4. Provide care until EMS arrives. CPR, bleeding control, or stabilization as appropriate.

5. Document. After the event, an incident report is completed. This is required and helps prevent future injuries.

Know your shop's 911 address, the location of every AED, eyewash station, fire extinguisher, and exit before an emergency occurs.

Adult CPR: Hands-Only and Full CPR

Cardiac arrest can follow electrocution, trauma, or medical emergency. The American Heart Association and American Red Cross agree on the core steps for adult CPR:

• Check for responsiveness. Tap shoulders and shout. If no response, call 911 immediately (or direct someone to do so).
• Position the patient. Flat on their back on a firm surface — a concrete shop floor is ideal.
• Chest compressions. Place the heel of one hand on the center of the chest (lower half of the sternum), place your other hand on top, and compress at least 2 inches deep at a rate of 100–120 compressions per minute. Allow full chest recoil between compressions. Minimize interruptions.
• Rescue breaths (full CPR). If trained and willing, give 2 breaths after every 30 compressions (30:2 ratio). Tilt the head, lift the chin, seal the mouth, and deliver a breath over about 1 second, enough to see the chest rise.
• Hands-only CPR. If you are not trained in rescue breaths or are unwilling, continuous chest compressions alone are effective for adults.
• Switch compressors every 2 minutes to maintain quality; compressor fatigue degrades depth and rate.

The CPR manikin feedback device will tell you in real time if your rate and depth are correct. Use that feedback during practice — it reflects exactly what happens in a real arrest.

AED Use

An Automated External Defibrillator (AED) delivers a controlled electrical shock to restore a normal heart rhythm in ventricular fibrillation or pulseless ventricular tachycardia. Every second counts.

1. Power on the AED (open lid or press power button).

2. Attach pads as shown in the diagram on the pads — one below the right collarbone, one on the left side below the armpit. Remove clothing and dry the chest first.

3. Let the AED analyze. Everyone must stand clear — do not touch the patient.

4. Deliver the shock if advised. Shout "Clear!" Visually confirm no one is touching the patient, then press the shock button.

5. Resume CPR immediately after the shock. Do not wait to see if the patient responds.

Bleeding Control: Direct Pressure and Tourniquet

Sharp metal, broken glass, and grinding sparks create laceration risks every day in the shop. Severe bleeding can be fatal within minutes.

Direct pressure:

• Don nitrile gloves before contact with blood — standard precaution.
• Apply firm, continuous pressure with a clean cloth or gauze directly over the wound.
• Elevate the limb above heart level if no fracture is suspected.
• Do not remove soaked dressings — add more on top.
• Maintain pressure and report to the supervisor.

Tourniquet (for life-threatening limb bleeding that direct pressure cannot control):

• Apply 2–3 inches above the wound on the limb (not on a joint).
• Tighten until bleeding stops.
• Note and report the time of application — EMS must know.
• Once applied, do not remove the tourniquet.
• The Combat Application Tourniquet (CAT) is a common commercial option; follow the manufacturer's directions.

Shop Safety Stations: Know Before You Need Them

All technicians must know the exact location of:

• ABC fire extinguishers — for Class A (ordinary combustibles), B (flammable liquids), and C (electrical) fires
• CO2 fire extinguishers — preferred near sensitive electronics or where residue damage matters
• Eyewash stations — must be reachable within 10 seconds from areas where chemical exposure is possible (ANSI Z358.1)
• AED
• First-aid kit
• All emergency exits

Your emergency map exercise puts this knowledge on paper — if you can draw it, you know it.

Earning Your First Aid/CPR/AED Card

You will complete a recognized provider course (American Red Cross or American Heart Association) that includes both a skills evaluation and a written component. Passing both earns you a certification card that is portable and recognized by employers. This card is a baseline expectation at many heavy-truck fleets and dealers.