NJ CDL Tanker cheat sheet

Pre-trip walk-around must confirm tank shell, baffles or bulkheads, manhole covers and gaskets, discharge valves, venting, grounding/bonding cable, and placards are present and undamaged; a missing gasket or cracked vent is an out-of-service defect.

Check tire pressure and condition on every axle position; tanker loads raise the center of gravity, so tire failure and uneven inflation degrade roll stability more than on a dry van.

Inspect the fifth wheel, kingpin, and trailer frame for cracks; a partially filled tank's surge multiplies stress on the coupling during braking.

Test service and parking brakes, including the trailer spring brakes; a tanker with liquid surge needs full braking authority and a functioning ABS on the trailer.

Verify the cargo tank's external ring stiffeners and internal baffles are intact; damaged baffles let liquid move as a single mass and can cause loss of control.

Confirm the emergency kit: fire extinguisher (charged, mounted, tagged), spill kit, wheel chocks, and warning triangles/devices are aboard and accessible.

Secure all hatches and dome covers before moving; an open manhole on a moving tanker spills product and creates a static ignition hazard.

Drive below posted limits and brake early and gradually; liquid surge pushes the vehicle forward on stops and sideways in turns, so smooth inputs are mandatory.

Use lower gears and engine braking on downgrades; sustained service brake use overheats drums and lengthens stopping distance with a heavy liquid load.

Before loading, confirm the tank is clean, drained, and compatible with the product; residual product or water can contaminate the load or react with it.

Bond the tank to the loading rack and ground the rack before opening any hatch or connecting a hose; static discharge during transfer can ignite flammable vapor.

Connect hoses and vapor-recovery lines only after bonding; keep connections tight and inspect gaskets for cuts or swelling that cause leaks.

Load within the tank's marked maximum capacity; overflow during loading is a reportable spill and a fire hazard.

Open hatches slowly and stand upwind; vapors vent from the tank and can be toxic or flammable, and pressure can release suddenly.

During unloading, close the discharge valve and shut off the pump before disconnecting hoses; trapped pressure sprays product when a fitting is opened.

Attend the transfer at all times; unattended loading or unloading is the leading cause of overfill and spill incidents.

After unloading, drain hoses and lines, close valves, replace caps, and remove bonding cables last so any residual static is dissipated safely.

Record the product, quantity, and any discrepancies on the bill of lading before leaving the rack; mismatched paperwork causes delivery errors and compliance problems.

Outage is the empty space above the liquid; it is expressed as a percentage of total tank volume and must not be less than the minimum required for the product's expansion.

Liquid expands with heat: a tank filled to 100 percent with no outage can overflow or rupture as product warms; always leave the specified outage.

Surge is the forward and backward movement of liquid in a partially filled tank; a full tank surges least, an empty tank not at all, and a half-full tank surges most.

Baffles divide the tank into compartments and reduce surge, but they do not eliminate it; baffled tanks still require smooth braking and turning.

High center of gravity and surge combine to reduce rollover threshold in curves; slow down before entering a curve and avoid braking while turning.

Surging liquid shifts weight onto the tractor during braking, pushing the vehicle forward and lengthening stopping distance; increase following distance.

Side-to-side surge in a partially loaded tank can cause the trailer to sway; correct with smooth steering, not abrupt counter-steering.

Load density affects stability: heavy, high-density products raise the center of gravity and increase rollover risk compared with lighter products.

Keep the outage within the marked limits shown on the tank; overfilling and underfilling both create handling and safety problems.

On a leak or spill, stop, shut off the engine, set the parking brake, and move people upwind and uphill; then notify emergency services and the carrier.

Use the shipping papers and placards to identify the hazard class and UN number; give these to responders so they can select the correct response guide.

Do not attempt to stop a large leak or fight a fire involving an unknown product; evacuate and let trained responders handle it.

For a tire fire or small fire, use the extinguisher only if the fire is small and you can stay upwind; a tanker fire can lead to a boiling liquid expanding vapor explosion (BLEVE).

If a tank is heated by fire, evacuate to a large radius; a BLEVE can throw fragments and fireball far beyond the immediate scene.

Report a hazardous material release to the National Response Center when required by regulation; keep the report number and details.

Carry the required emergency response information with the shipping papers so responders can act before the carrier is reached.

If the vehicle is disabled with a load aboard, keep the placards visible, use warning devices, and do not leave the scene unattended unless required for safety.

After any incident, do not resume the trip until the vehicle and load are inspected and cleared by a qualified person.