Ohio CDL Hazmat flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Hazardous material definition

A material that DOT lists in the 49 CFR 172.101 Hazardous Materials Table or that meets one of the nine hazard class definitions; hazardous wastes, marine pollutants, and hazardous substances are included.

Class 2 gas divisions

Class 2 divides into 2.1 flammable gas, 2.2 non-flammable non-toxic gas, and 2.3 toxic gas; 2.3 material with a poison-inhalation-hazard notation gets the strictest handling rules.

Hazmat endorsement H requirements

The H endorsement permits driving a CMV carrying placarded quantities of hazmat; it requires passing the hazmat knowledge test and completing a TSA security threat assessment.

Table 1 versus Table 2

Table 1 lists materials needing placards in any quantity; Table 2 materials need placards once the aggregate gross weight of that category in the vehicle reaches 1,001 pounds.

Reportable quantity (RQ)

The amount of a hazardous substance that, if released, must be reported to the National Response Center; RQs appear in the Hazardous Materials Table and in Appendix A to the table.

Packing group I, II, III

Packing group I means great danger, II moderate danger, III minor danger; packing groups apply to Classes 3, 4, 5, 6.1, 8, and some Class 9 materials.

Forbidden hazardous materials

Materials shown as forbidden in the Hazardous Materials Table may not be offered or transported by any mode; no packaging choice, exemption, or special permit makes them legal.

Hazmat training cycle

Training is required within 90 days of hire and every three years afterward, covering general awareness, function-specific duties, safety, and security awareness; records are kept while employed plus two years.

Shipping paper basic description order

Shipping papers show the proper shipping name, hazard class or division, UN/NA identification number, and packing group in that order, followed by total quantity and package count.

Emergency response phone number

Every hazmat shipping paper must list an emergency response telephone number that is answered at all times during transport by someone who can give response advice.

1,001-pound placard rule

When the total gross weight of a Table 2 hazmat category in one vehicle reaches 1,001 pounds, the required placard for that category must be displayed.

DANGEROUS placard substitution limits

DANGEROUS may replace two or more Table 2 placards, but never for Table 1, bulk packages, Division 1.1, 1.2, 1.3, 4.3, 2.3, or 6.1 packing group I.

Placard placement on vehicle

Placards are 250 mm square and go on both sides and both ends of the vehicle or container, upright, legible, and not covered by dirt, equipment, or signs.

Package label size

Labels measure at least 100 mm (4 inches) on each side, are applied near the shipping name on the package, and must not cover required markings.

UN number on bulk packages

Bulk packages, cargo tanks, and portable tanks show the UN identification number on two sides plus the rear, along with the proper shipping name.

Hazardous waste manifest copies

A hazardous waste manifest lists the generator, transporter, and receiving facility; the transporter keeps a copy, and the generator receives a signed return copy.

Segregation table 177.848

The table at 49 CFR 177.848 marks combinations that may not be loaded together in one vehicle; Division 4.3 is kept apart from liquids and oxidizers, and acids from cyanides.

Flammable liquid loading steps

Before loading or unloading flammable liquid, shut off the engine, set the parking brake, forbid smoking, and bond and ground the tank to prevent static ignition.

Poison-inhalation-hazard loading

Packages of poison-inhalation-hazard material must be loaded away from food and feed, kept from heat and ignition sources, and handled so a leak cannot reach the cab.

Cargo securement requirement

49 CFR 393.100 requires all cargo, including hazmat, to be secured against shifting, rolling, or spilling with tiedowns, blocking, or bracing strong enough for the load.

Cylinder loading rules

Keep valve protection caps in place, cylinders upright and secured against movement, away from heat; never drag or drop cylinders, and separate oxygen from flammable gases.

Blocking and bracing

Blocking and bracing uses wood or bars to stop packages from sliding, while straps and tiedowns hold them down; loose hazmat packages must never be left to shift.

Unauthorized riders

No unauthorized person may ride in a vehicle carrying hazardous materials; the driver is responsible for keeping passengers out of the cab and cargo area.

Food and hazmat separation

Poisonous and infectious substances must not be loaded in the same space with food, feed, or products for human or animal consumption unless separated.

Attending a hazmat vehicle

Vehicles carrying explosives, flammable liquids, or flammable gases must be attended, meaning the driver stays with the vehicle, awake, except in a secure lot or at a shipper's premises.

300-foot parking rule

A placarded vehicle may not park within 5 feet of the traveled roadway or within 300 feet of a bridge, tunnel, dwelling, or place where people assemble.

Railroad crossing stop

A vehicle carrying hazmat that requires placards must stop before each railroad grade crossing, look both ways, and cross only after confirming the track is clear.

National Response Center

The National Response Center at 1-800-424-8802 receives reports of hazardous material releases and relays them to federal, state, and local responders.

Emergency Response Guidebook steps

Look up the material by name or UN number, go to the numbered orange guide page for protective actions, and use the green table for initial isolation distances.

Shipping paper accessibility

The shipping paper must stay within the driver's reach, such as on the seat or in a door pocket, and be handed to an inspector who boards the vehicle.

Upwind approach to incident

Park away from the release, upwind and uphill, shut off the engine, keep bystanders back, and do not walk into vapor, liquid pools, or smoke.

Hazmat fire response

If cargo is on fire or threatened, evacuate the area and call 911; only trained responders in protective clothing and SCBA should attempt to fight a hazmat fire.