NFPA 30: Flammable and Combustible Liquids Code Flashcards
What is the definition of “emergency relief venting”? (NFPA 30, Section 3.3.61.1)
An opening, construction method, or device that will automatically relieve excessive internal pressure due to an exposure fire.
What is meant by the term “fugitive emissions”? (NFPA 30, Section 3.3.22)
Releases of flammable vapor that continuously or intermittently occur from process equipment during normal operations.
What is the definition of a “stable liquid”? (NFPA 30, Section 3.3.33.3)
Any liquid not defined as unstable.
What is the definition of an “unstable liquid”? (NFPA 30, Section 3.3.33.4)
A liquid that, in the pure state or as commercially produced or transported, will vigorously polymerize, decompose, undergo condensation reaction, or become self-reactive under conditions of shock, pressure, or temperature.
What is the NFPA definition of “ventilation”? (NFPA 30, Section 3.3.62)
For the purpose of this code, movement of air that is provided for the prevention of fire and explosion.
What is the definition of “boiling point”? (NFPA 30, Section 3.3.5)
The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure.
What is the definition of “flash point”? (NFPA 30, Section 3.3.21)
The minimum temperature of a liquid at which sufficient vapor is given off to form an ignitable mixture with the air, near the surface of the liquid or within the vessel used, as determined by the appropriate test procedure and apparatus specified in Section 4.4.
What is the definition of “vapor pressure”? (NFPA 30, Section 3.3.55)
The pressure, measured in pounds per square inch, absolute (psia), exerted by a liquid, as deter‐ mined by ASTM D323, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method).
What is the definition of a “class I flammable liquid”? (NFPA 30, Section 4.3.1)
Any liquid that has a closed-cup flash point below 100°F (37.8°C), as determined by the test procedures and apparatus set forth in Section 4.4 and a Reid vapor pressure that does not exceed an absolute pressure of 40 psi (276 kPa) at 100°F (37.8°C), as determined by ASTM D323, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method).
What is the definition of a “combustible liquid”? (NFPA 30, Section 3.3.33.1)
Any liquid that has a closedcup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in Section 4.4.
What does adequate venting of an atmospheric storage tank prevent? (NFPA 30, Section 21.4.3.1)
Storage tanks shall be vented to prevent the development of vacuum or pressure that can distort the tank or exceed the rated design pressure of the tank when the tank is filled or emptied or because of atmospheric temperature changes.
In order to be able to separate a tank from its piping in an emergency, what must be provided at each opening in an aboveground tank through which liquid can normally flow? (NFPA 30, Section 22.13.1)
Each connection to an aboveground tank through which liquid can normally flow shall be provided with an internal or an external valve located as close as practical to the shell of the tank.
Each opening below liquid level in an aboveground tank through which liquid does NOT normally flow must be equipped with a liquid tight closure. What are some examples of the type of hardware that can be used to meet this requirement? (NFPA 30, Section 22.13.2)
Each connection below the liquid level through which liquid does not normally flow shall be provided with a liquid‐ tight closure such as a valve, plug, or blind, or a combination of these.
In order to control static electricity, what must be done with metallic equipment? (NFPA 30, Section 6.5.4)
All metallic equipment such as tanks, machinery, and piping where the potential exists for an ignitable mixture to be present shall be bonded and grounded.
What are three things that must be included in the written procedures to prevent overfilling of aboveground tanks? (NFPA 30, Section 21.7.1.4)
1) Instructions covering methods to check for lineup and receipt of initial delivery to tank designated to receive shipment.
2) Provision for training and monitoring the performance of operating personnel by supervisors.
3) Schedules and procedures for inspection and testing of gauging equipment and high-level instrumentation and related systems. Inspection and testing intervals shall be approved but shall not exceed 1 year.
If loading and unloading is done through a common pipe system, a check valve is not required. However, what type of valve is required? Where should this valve be located? (NFPA 30, Section 27.6.7)
An isolation valve shall be provided. This valve shall be located so that it is accessible or shall be remotely operable.
If the piping test procedures in ASME B31 are not followed, what procedures should be used to test piping before it is covered, enclosed or placed in use? (NFPA 30, Section 27.7)
Testing shall be done hydrostatically to 150 percent of the maximum anticipated pressure of the system or pneumatically to 110 percent of the maximum anticipated pressure of the system, and the test pressure shall be maintained while a complete visual inspection of all joints and connections is conducted.
How long must a hydrostatic or pneumatic test of piping that has not yet been covered or enclosed last? (NFPA 30, Section 27.7.1.1)
In no case shall the test pressure be maintained for less than 10 minutes.
In order to control static electricity, what must be done with non-metallic equipment? (NFPA 30, Section 6.5.4)
All nonmetallic equipment and piping where the potential exists for an ignitable mixture to be present shall be designed and operated to prevent electrostatic ignition.
What is the definition of an “atmospheric tank”? (NFPA 30, Section 3.3.52.2)
A storage tank that has been designed to operate at pressures from atmospheric through a gauge pressure of 1.0 psi (6.9 kPa) (i.e., 760 mm Hg through 812 mm Hg) measured at the top of the tank.
What is the definition of a “low-pressure tank”? (NFPA 30, Section 3.3.52.3)
For the purposes of this code, a storage tank designed to withstand an internal pressure above a gauge pressure of 1.0 psi (6.9 kPa) but not more than a gauge pressure of 15 psi (103 kPa) measured at the top of the tank.
What is the definition of a “pressure vessel”? (NFPA 30, Section 3.3.44)
A container or other component designed in accordance with the ASME Boiler and Pressure Vessel Code or CSA B51, Boiler, Pressure Vessel and Pressure Piping Code. [52, 2016]
What is meant by the term “protection for exposures”? (NFPA 30, Section 3.3.46)
Fire protection for structures on property adjacent to liquid storage that is provided by (1) a public fire department or (2) a private fire brigade maintained on the property adjacent to the liquid storage, either of which is capable of providing cooling water streams to protect the property adjacent to the liquid storage.
What is the definition of a “secondary containment tank”? (NFPA 30, Section 3.3.52.5)
A tank that has an inner and outer wall with an interstitial space (annulus) between the walls and that has a means for monitoring the interstitial space for a leak.