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5704.2.9.6.3 Separation Between Adjacent Tanks Containing Flammable or Combustible Liquids and LP-Gas
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The minimum horizontal separation between an LP-gas container and a Class I, II or IIIA liquid storage tank shall be 20 feet (6096 mm) except in the case of Class I, II or IIIA liquid tanks operating at pressures exceeding 2.5 psig (17.2 kPa) or equipped with emergency venting allowing pressures to exceed 2.5 psig (17.2 kPa), in which case the provisions of Section 5704.2.9.6.2 shall apply.
An approved means shall be provided to prevent the accumulation of Class I, II or IIIA liquids under adjacent LP-gas containers such as by dikes, diversion curbs or grading. Where flammable or combustible liquid storage tanks are within a diked area, the LP-gas containers shall be outside the diked area and not less than 10 feet (3048 mm) away from the centerline of the wall of the diked area.
Exceptions:
- Liquefied petroleum gas containers of 125 gallons (473 L) or less in capacity installed adjacent to fuel-oil supply tanks of 660 gallons (2498 L) or less in capacity.
- Horizontal separation is not required between above-ground LP-gas containers and underground flammable and combustible liquid tanks.
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5704.2.9.6.3 Flammable and Combustible Liquids, Separation Between Adjacent Tanks Containing Flammable or Combustible Liquids and LP-Gas
The minimum horizontal separation between an LP-gas container and a Class I, II or IIIA liquid storage tank shall be 20 feet (6096 mm) except ...
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5704.2 Flammable and Combustible Liquids, Tank Storage
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6104.3.
TABLE 6104.3
LOCATION OF LP-GAS CONTAINERS
LP-GAS CONTAINER CAPACITY (water gallons)
MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS ...