S93 Practice test

The maximum amount of Class IB, IC, II, or III liquids that can be stored in a single portable tank at a construction site is 660 gallons. This limit is set to balance practical needs with safety considerations in the dynamic environment of a construction site.

The storage of Class I flammable liquids in basement areas of buildings under construction is always prohibited, regardless of building features. This strict rule is in place due to the high risk associated with flammable vapors accumulating in lower areas and the difficulty of evacuation from basements in case of fire.

Oily or solvent-soaked rags should be disposed of in self-closing, non-combustible containers. This prevents the potential for spontaneous combustion and contains any vapors. Open containers, regular trash disposal, or burying on-site are all unsafe practices.

Underground storage tanks are not a requirement for outdoor storage of flammable and combustible liquids at construction sites. In fact, above-ground storage is often preferred for easier inspection and maintenance. The other options are typical requirements for such storage areas.

The primary purpose of bonding when transferring flammable liquids is to equalize potential between containers and prevent static spark. This is crucial for preventing ignition of flammable vapors due to static electricity discharge during the transfer process.

Safety cans for flammable liquids must be equipped with a spring-closing lid and spout cover. This design helps to prevent spills and contain vapors. They are typically made of steel (not any metal), are required for various quantities (not just over 5 gallons), and are intended for temporary use, not permanent storage.

The maximum capacity of a single portable tank for storing Class II or Class III combustible liquids at a construction site is 660 gallons. This limit is set to balance practical needs with safety considerations in the dynamic environment of a construction site.

Mercury is not a flammable liquid; it's a liquid metal at room temperature. Acetone, ethanol, and gasoline are all common flammable liquids that might be found at construction sites for various purposes.

The correct procedure is to eliminate ignition sources, contain the spill, and use appropriate absorbents. Water should not be used as it can spread the flammable liquid. Waiting for evaporation is dangerous, and calling the fire department for all spills regardless of size is unnecessary if the spill can be safely managed on-site.

While the name of the liquid, statement of hazards, and precautionary measures are required on labels for flammable and combustible liquids, the manufacturer's contact information is not typically a mandatory element.

The minimum distance required between outdoor portable tank storage of flammable or combustible liquids and the nearest building or property line is 20 feet. This separation distance is crucial for fire safety, allowing for emergency access and reducing the risk of fire spread.

Both the dispensing and receiving containers must be bonded before transfer begins. This is crucial for preventing the accumulation of static electricity, which could potentially cause a spark and ignite the flammable vapors.

The maximum quantity of Class II combustible liquids allowed to be stored outside a flammable liquid storage room or cabinet in a single fire area is 240 gallons. This limit is set to minimize the fire risk in areas not specifically designed for large quantities of flammable or combustible liquids.

Natural ventilation only is not a requirement for storage rooms or cabinets. In fact, proper mechanical ventilation is often required to ensure the safe storage of flammable and combustible liquids.

For Class IA flammable liquids, the maximum allowable container size in safety cans at construction sites is 2 gallons. This restriction is in place due to the highly volatile nature of Class IA liquids and the increased risks associated with construction environments.