Pennsylvania Dep of Labor and Industry Titles 34 and 37 Flammable and Combustible Liquids Regulations Flashcards
- What is the definition of “inflammable”? (Flammable & Combustible Liquids regulations, Title 34, Section 14.1)
flammable
- If end failure of a horizontal tank may endanger adjacent property, how must the tank be positioned? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.1 (b))
The tank shall be placed with the longitudinal axis parallel to the more severe exposure
- What is the minimum distance allowed between tanks storing unstable liquids? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.2 (d))
Not Less than 3ft
- What effect does heating have on the volatility of a liquid? (Flammable & Combustible Liquids regulations, Title 34, Section 14.6(c
heating a liquid to its flash point or higher increases its volatility, meaning it becomes more prone to vaporization and forming flammable vapors, requiring Class II and Class III liquids to be handled with the same precautions as Class I and II liquids.
What factors determine the required venting capacity of a tank? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.25 (c))
the required venting capacity of a tank is determined by several factors, primarily the filling or withdrawal rate (whichever is greater) and the vent-line length. The section also specifies that vent pipes must be at least 1 ¼ inch nominal inside diameter. Importantly, the venting capacity needs to be sufficient to prevent backpressure from exceeding 2.5 psig during filling or withdrawal.
How shall tanks and piping be tested prior to being placed in use? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.26(a))
All tanks shall be tested for strength and tightness before they are placed in service in accordance with the applicable code or standard under which they were built. This test shall be made at operating pressure with air, inert gas or water prior to placing the tank in service.
- The area surrounding a tank or group of tanks may be provided with a drainage system to prevent accidental discharge of liquid from endangering adjoining property of reaching waterways. In what areas is this drainage system NOT allowed to discharge? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.6 (b)(3))
According to Title 34, Section 14a.6 (b)(3) regarding flammable and combustible liquids, a drainage system surrounding tanks or groups of tanks is not allowed to discharge to adjoining property, natural water courses, public sewers, or public drains unless the discharge is deemed non-hazardous or the system is designed to prevent flammable/combustible liquid release.
Where vent piping for tanks storing class I liquids is located adjacent to buildings or public ways, what is the minimum height above adjacent ground level that vapors may be discharged? What is the minimum distance required between vent openings and building openings? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.8 (c)(1))
For vent piping of tanks storing Class I liquids adjacent to buildings or public ways, the minimum height for vapor discharge is 12 feet above adjacent ground level, and the minimum distance between vent openings and building openings is 5 feet.
How far above maximum flood stage must the top of a vertical tank extend? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.212 (a))
the top of a vertical tank storing flammable or combustible liquids must extend at least 30% of its allowable storage capacity above the maximum flood stage.
When is anchoring (or some other method of keeping the tank from floating) required for aboveground horizontal tanks located in flood areas? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.212 (b))
anchoring or other methods to prevent floating are required for aboveground horizontal tanks located in flood areas if more than 70% of the tank’s storage capacity will be submerged at the established flood stage.
What should be done with tank vents or other openings which are not liquid tight on horizontal tanks in flood areas? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.212 (b))
in flood areas, tank vents and other non-liquid-tight openings on horizontal tanks storing flammable and combustible liquids, as per Title 34, Section 14a.212(b), must be extended above the maximum flood stage water level to prevent floodwater contamination.
What categories of aboveground storage tanks are exempt from emergency venting requirements? (Flammable & Combustible Liquids regulations, Title 34, Section 14a.8(b))
Aboveground storage tanks containing Class III-B liquids (flashpoint at or above 200°F or 93.3°C) exceeding 12,000 gallons and not located in a containment dike or drainage path for Class I or II liquids are exempt from emergency venting requirements.
What are the rules for emergency vents on tanks inside vaults? (Flammable & Combustible Liquids regulations, Title 37, Section 14.2(k))
For tanks inside vaults storing flammable and combustible liquids, according to 37 Pa. Code § 14.2(k), emergency vents must be vapor-tight and can discharge inside the vault, but long-bolt manhole covers are not permitted for this purpose.
What is the definition of a Class I flammable liquid? (Flammable & Combustible Liquids,
Section 14.6)
What is the distance required between an underground tank storing a Class I liquid and the
nearest wall of any basement, pit or cellar or adjoining property line? (Flammable &
Combustible Liquids, Section 14a.21)
How far apart must underground tanks be set? (Flammable & Combustible Liquids,
Section 14a.22)
Tanks not subject to traffic loading may be covered with not less than ________ of backfill
topped with a slab of reinforced concrete not less than ________ thick. (Flammable &
Combustible Liquids, Section 14a.22)
What are the minimum requirements for underground tank cover in traffic areas?
(Flammable & Combustible Liquids, Section 14a.22)
How far beyond the outline of a tank must concrete or asphalt paving used as part of the
cover of an underground tank extend? (Flammable & Combustible Liquids, Section 14a.22)
What are two requirements for underground tank fill lines? (Flammable and Combustible
Liquids, Section 14a.24a)
What are three requirements for filling and vapor recovery connections? (Flammable and
Combustible Liquids, Section 14a.24a)
The design and location of vent pipe systems shall take into consideration ________________ .
(Flammable and Combustible Liquids, Section 14a.25)
Before being covered or placed in use, tanks and piping shall _______ . (Flammable
and Combustible Liquids, Section 14a.26)
What three procedures are required when an underground tank is taken out of service for a
period of three months or less? (Flammable and Combustible Liquids, Section 14a.221)
a.)
b.)
c.)
If a tank is to be disposed of as junk, it shall be ________ . (Flammable and Combustible
Liquids, Section 14a.222)
UR
If a tank is to be closed in place, it must be filled with ___________ . (Flammable and
Combustible Liquids, Section 14a.222)
