NFPA 30: Flammable Liquids Storage Guidelines
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Questions and Answers

What is the maximum quantity of Category 1 flammable liquids allowed outside of a storage area?

  • 660 gallons
  • 45 gallons
  • 25 gallons (correct)
  • 120 gallons

    • Which method is NOT permitted for transferring flammable liquids within a building?

  • By means of air pressure on the container (correct)
  • By gravity through an approved self-closing valve
  • From safety cans
  • Through a closed piping system

    • What must be provided during transfer operations of flammable liquids?

  • Substantial lighting
  • Adequate ventilation (correct)
  • No ventilation
  • Minimal ventilation

    • When transferring flammable liquids, which equipment is specified for use?

    <p>Safety cans</p> Signup and view all the answers

    What is required for the storage of Category 2, 3, or 4 flammable liquids in containers outside of a storage area?

    <p>120 gallons maximum</p> Signup and view all the answers

    What is a primary hazard associated with flammable liquids?

    <p>Explosion</p> Signup and view all the answers

    According to standard 29 CFR 1910.106, what is the flash point threshold for flammable liquids?

    <p>Below 200ºF</p> Signup and view all the answers

    Which of the following best describes an aerosol?

    <p>A material dispensed as a mist under pressure</p> Signup and view all the answers

    What does the term 'approved' refer to in the context of flammable liquids?

    <p>Listed by a testing laboratory</p> Signup and view all the answers

    Which organization provides the primary basis for the standards in 29 CFR 1910.106?

    <p>National Fire Protection Association</p> Signup and view all the answers

    What aspect does 29 CFR 1910.106 primarily address to prevent hazards from flammable liquids?

    <p>Design and construction standards</p> Signup and view all the answers

    Which factor is NOT a concern outlined in the regulations for handling flammable liquids?

    <p>Chemical composition analysis</p> Signup and view all the answers

    What does the boiling point of a liquid depend on according to the standard?

    <p>The pressure at which it is measured</p> Signup and view all the answers

    What is the term used for the range of flammable vapor concentrations that can ignite?

    <p>Flammable range</p> Signup and view all the answers

    What are the boundary limits of flammability known as?

    <p>Lower and upper flammable limits</p> Signup and view all the answers

    Which term is synonymous with the lower flammable limit (LFL)?

    <p>Lower explosive limit</p> Signup and view all the answers

    What happens to a vapor/air mixture that is below the lower flammable limit?

    <p>It is too lean to ignite.</p> Signup and view all the answers

    What is the capacity limit for individual containers that fall under the specified storage scope?

    <p>60 gallons</p> Signup and view all the answers

    Which of the following is exempt from the cold storage requirements?

    <p>Flammable paints</p> Signup and view all the answers

    What type of container is defined as having a liquid capacity of over 60 gallons and is portable?

    <p>Portable tank</p> Signup and view all the answers

    Which type of flammable liquids does the storage section not apply to?

    <p>Flammable liquids in portable engine tanks</p> Signup and view all the answers

    What is the minimum aisle width that must be maintained in every inside storage room?

    <p>3 feet</p> Signup and view all the answers

    What type of fire door is required for openings in inside storage rooms?

    <p>Approved self-closing fire doors</p> Signup and view all the answers

    For which category of flammable liquids must electrical wiring be approved for Class I, Division 2 Hazardous Locations?

    <p>All of the above</p> Signup and view all the answers

    What is the required air change frequency for ventilation systems in inside storage rooms?

    <p>Six times per hour</p> Signup and view all the answers

    How should dispensing of flammable liquids be conducted in inside storage rooms?

    <p>Only by approved pump or self-closing faucet</p> Signup and view all the answers

    Where must the fresh air intake and exhaust outlet be located when gravity ventilation is provided?

    <p>On the exterior of the building</p> Signup and view all the answers

    What is the restriction on stacking containers in inside storage rooms?

    <p>Containers over 30 gallons capacity shall not be stacked</p> Signup and view all the answers

    What must not be obstructed by the storage of flammable liquids?

    <p>Exits and stairways</p> Signup and view all the answers

    What is the definition of flash point?

    <p>The temperature at which a liquid emits sufficient vapor to ignite when exposed to a flame.</p> Signup and view all the answers

    Which category includes liquids with flashpoints below 73.4 °F and boiling points at or below 95 °F?

    <p>Category 1</p> Signup and view all the answers

    What happens to a liquid when the temperature exceeds the boiling point?

    <p>The liquid forms bubbles and cannot remain liquid.</p> Signup and view all the answers

    What does a closed container prevent from escaping?

    <p>Neither liquid nor vapor.</p> Signup and view all the answers

    How are closed-cup and open-cup flash points determined?

    <p>With a standard closed container and open-surface dish respectively.</p> Signup and view all the answers

    What characterizes a flammable liquid?

    <p>Any liquid with a flashpoint at or below 199.4 °F.</p> Signup and view all the answers

    What is the minimum temperature at which Category 3 liquids must be handled like Category 3 liquids with lower flashpoints?

    <p>100 °F</p> Signup and view all the answers

    Which organization specifies the methods for determining flash points?

    <p>ASTM (American Society for Testing and Materials)</p> Signup and view all the answers

    Study Notes

    Introduction

    • This document covers only two sections of the standard titled Flammable Liquids: Container and portable tank storage & Industrial Plants.
    • The standard is primarily based on NFPA 30, Flammable Liquids Code.
    • The standard addresses the handling, storage, and use of flammable liquids with a flashpoint below 200°F.
    • This standard addresses the primary concerns of design & construction, ventilation, ignition sources, and storage.

    Definitions

    • An aerosol is a material that is dispensed from a container as a mist, spray, or foam using a propellant under pressure.
    • Approved or listed refers to approval by a nationally recognized testing laboratory
    • Boiling point is the temperature at which a liquid changes to vapor at a pressure of 14.7 pounds per square inch absolute (psia) which is equivalent to 760 millimeters of mercury (760 mm Hg).
    • Container includes any can, barrel, or drum.
    • Closed container is a container with a lid or other device that prevents liquid or vapor from escaping at ordinary temperatures.
    • Fire area is a building area separated from the rest of the building by construction with a fire resistance of at least 1 hour and any communicating openings are protected by an assembly with a fire resistance rating of at least 1 hour.
    • Flash point is the minimum temperature at which a liquid releases sufficient vapor to form an ignitable mixture with air near the surface of the liquid.
    • The flammable range is also known as the explosive range, and it includes all concentrations of flammable vapor or gas in air where a flash or flame will travel if ignited.
    • The lower flammable limit (LFL) or lower explosive limit (LEL) is the minimum concentration of flammable vapor or gas in air below which a flame will not propagate.
    • The upper flammable limit (UFL) or upper explosive limit (UEL) is the maximum concentration of flammable vapor or gas in air above which a flame will not propagate.

    Container and Portable Tank Storage

    • This section only applies to the storage of flammable liquids in drums or other containers not exceeding 60 gallons individual capacity and portable tanks of less than 660 gallons individual capacity.
    • It does not apply to the following:
      • Storage of containers in bulk plants, service stations, refineries, chemical plants, and distilleries.
      • Storage of Category 1, 2, or 3 flammable liquids in the fuel tanks of a motor vehicle, aircraft, boat, or portable or stationary engine.
      • Storage of flammable paints, oils, varnishes, and similar mixtures used for painting or maintenance when not kept for a period in excess of 30 days.
      • Storage of beverages when packed in individual containers not exceeding 1 gallon in size.

    Design, Construction, and Capacity of Containers

    • Only approved containers and portable tanks shall be used.
    • Openings shall be provided with approved self‐closing fire doors.
    • The room shall be liquid‐tight where the walls join the floor.

    Rating and Capacity

    • Containers over 30 gallons capacity shall not be stacked one upon the other.

    Dispensing

    • Dispensing shall be only by approved pump or self‐closing faucet.

    Storage Inside Building

    • Flammable liquids, including stock for sale, shall not be stored so as to limit use of exits, stairways, or areas normally used for the safe egress of people.

    Outside Storage Rooms

    • The quantity of liquid that may be located outside of an inside storage room or storage cabinet in a building or in any one fire area of a building shall not exceed:
      • 25 gallons of Category 1 flammable liquids in containers
      • 120 gallons of Category 2, 3, or 4 flammable liquids in containers
      • 660 gallons of Category 2, 3, or 4 flammable liquids in a single portable tank.

    Handling Liquids at Point of Final Use

    • Flammable liquids shall be kept in covered containers when not actually in use.
    • Where flammable liquids are used or handled, except in closed containers, means shall be provided to dispose promptly and safely of leakage or spills.
    • Flammable liquids shall be drawn from or transferred into vessels, containers, or portable tanks within a building only in the following manner:
      • Through a closed piping system.
      • From safety cans.
      • From containers or portable tanks by gravity through an approved self‐closing valve.
    • Transfer operations must be provided with adequate ventilation.
    • Sources of ignition are not permitted in areas where flammable vapors may travel.
    • Transferring liquids by means of air pressure on the container or portable tanks is prohibited.
    • Fire protection systems including sprinkler, water spray, carbon dioxide, or other systems are required.

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    Related Documents

    Flammable Liquids 29 CFR 1910.106 PDF

    Description

    This quiz focuses on the NFPA 30 standards regarding the storage of flammable liquids, specifically container and portable tank storage as well as guidelines for industrial plants. It covers essential aspects such as design, construction, ventilation, and ignition sources relevant to handling these materials safely.

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