Placard with UN3256 number (flammable elevated temperature liquid), 10-3/4 in X 10-3/4 in, for transportation

UN3256 placard for hot flammable liquids, class 3, 10-3/4 in X 10-3/4 in

This item is not kept in stock. Please allow 5 days for delivery.

The UN3256 placard identifies a load of flammable elevated temperature liquid, class 3, on heated and insulated tank trucks delivering high-temperature process liquids. It shows the number 3256 in black in its white box, the flame symbol and the class number 3, on a red 10-3/4 X 10-3/4 in diamond that fits most placard holders. Made in Canada, it is sold individually.

Features of the pre-printed UN3256 placard

• UN3256 number pre-printed with the flame symbol and the class number 3: no digits to apply yourself.
• 10-3/4 X 10-3/4 in diamond, the standard size that fits most placard holders.
• High-contrast printing, legible from a distance.
• Three materials: low-cost cardboard, reusable rigid plastic or permanent self-adhesive vinyl.
• Designed, according to the manufacturer, for the Canadian TDG Regulations, the US DOT and the IMDG, IATA and ICAO codes: convenient for cross-border transport.

Available formats: cardboard, rigid plastic or self-adhesive vinyl

Aluminum placard available on request: contact customer service for a quote.

Flammable liquids carried hot: what to do in case of a spill

UN number 3256 corresponds to the shipping name ELEVATED TEMPERATURE LIQUID, FLAMMABLE, N.O.S., with flash point above 60°C, at or above its flash point, class 3, packing group III. It is found in heated transfer and transport of process liquids; the composition is on the safety data sheet. Transport Canada's 2024 Emergency Response Guidebook (ERG) places it under guide 128: at its transport temperature, its vapours can ignite despite a high flash point, and the hot liquid causes burns.

In case of a spill during transport or in your storage area, guide 128 calls for dialing 911, then the emergency number on the shipping document, and isolating at least 50 m around the leak. Eliminate all ignition sources (cigarettes, road flares, sparks, flames), ground the handling equipment, do not touch the product and, if you can do it without risk, stop the leak. Keep the hot liquid out of waterways, sewers, basements and confined areas. Absorb or cover the liquid with dry earth, sand or another non-combustible material, then transfer it into containers with clean non-sparking tools. For a large spill, dike far ahead of the liquid and consider an initial evacuation of 300 m downwind.

For a material carried hot, use only earth, sand or another non-combustible material, as the guide calls for, and keep traffic pylons (EPTCONE28B), barricade tape (ECT3YB1) and an extendable barrier (EPT195) in the vehicle to keep people away from the hot liquid.

Fire safety for hot flammable liquids: which extinguisher to keep in the vehicle and at the warehouse

For a small fire, guide 128 names dry chemical and CO₂ among the extinguishing agents: an ABC dry chemical (EXABC10) extinguisher or a CO₂ (EXCO10) unit is therefore the right choice. Place it in the vehicle cab and at an accessible spot near the storage area, outside the hazard zone. A large fire is a job for firefighters. If a tank, rail tank car or highway tank is involved in a fire, the guide calls for isolating 800 m in all directions and considering an initial evacuation over the same distance.

These guidelines from the 2024 ERG help you prepare your transport and storage procedures. For the exact product and the real situation, the current safety data sheet and the ERG prevail; emergency measures are for trained and equipped personnel, with a positive pressure self-contained breathing apparatus (SCBA), as the guide specifies.

UN3256 placard applications

The UN3256 placard is intended for heated tank carriers and companies producing or using process liquids delivered at high temperature. Cardboard is handy for a one-time load, rigid plastic is reused from one trip to the next, and self-adhesive vinyl stays in place on a tank dedicated to this product.

Complete your display with an aluminum flip chart placard, with five (ECLAP5) legends including class 3, or fourteen (ECLAP14) legends, for trucks whose cargo changes; the class 3 placard with a blank (ECLA3UN) UN box, to write in a number yourself; the class 3 flammable liquid placard (ECLA3); and the yellow and black warning adhesive tape (ECT751JN108) to mark off the storage area.

UN3256 placard technical specifications

Placard installation and care

Apply the self-adhesive vinyl to a clean, dry surface. Keep the placard clean so the number stays legible, and replace it if it is damaged, faded or illegible. For a placard exposed to the weather for a long time, choose rigid plastic or vinyl over cardboard.

FAQ: UN3256 placard and hot flammable liquids transport

Which material should I choose for the UN3256 placard: cardboard, plastic or vinyl?

Cardboard is the low-cost option for temporary use. Rigid plastic is weatherproof and reusable. Self-adhesive vinyl suits permanent application on a tank or trailer.

Why does a liquid with a high flash point carry a class 3 placard?

Because it travels at or above its flash point: at that temperature, its vapours can ignite like those of a flammable liquid.

What safety perimeter is needed for a spill of the hot liquid?

Guide 128 of the 2024 ERG calls for isolating at least 50 m around the leak. For a large spill, consider an evacuation of 300 m downwind, and 800 m in all directions if a tank is on fire.

Which extinguisher should I keep in a vehicle carrying the hot liquid?

For a small fire, an ABC or BC dry chemical extinguisher, or a CO₂ extinguisher. A large fire is a job for firefighters: move away and dial 911.

Does the UN3256 placard fit in a placard holder?

Yes. Its 10-3/4 X 10-3/4 in format is the standard size that fits most placard holders.

Suggestions for transport and storage of hot flammable liquids

For the driver or handler who deals with the hot liquid at loading, delivery or in the warehouse, plan for Centurion splash goggles (YG454), a 6000 series full face respirator (R6800) for routine handling, with cartridges selected according to the SDS and the risk assessment, 18 in nitrile gloves (GL37185), waterproof PVC steel toe boots (VC18821C) and a flame-resistant high-visibility vest (VV510FR) to stay visible on the road and at the loading station.

To mark off a hot liquid spill and respond to a starting fire, keep a 10 lb ABC dry powder (EXABC10) extinguisher, a 10 lb Purple (EXPK) K BC unit or a 10 lb dioxide (EXCO10) extinguisher close at hand, along with 28 in traffic markers (EPTCONE28B) and 1000 ft yellow barricade perimeter (ECT3YB1) tape to keep people at a distance. For a driver working in isolation: the type 1 personal (TR01) first aid kit suits an isolated worker with no access to another kit, a vehicle with 1 to 5 workers, or a vehicle with more than 5 workers less than 30 minutes from medical services; for a vehicle with more than 5 workers more than 30 minutes from medical services, provide the type 2 basic (TR02M) first aid kit. Complete the truck's equipment with a portable road safety kit (TR16) and the set of three removable reflectors (EPTR) to signal a stopped vehicle.

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