5705.3.4 Location of processing vessels.
FC § 5705.3.4
Processing vessels shall be located with respect to distances to lot lines, in accordance with FC Tables 5705.3.4(1) and 5705.3.4(2). Processing vessels for flammable liquids shall be limited to not more than 550 gallons (2082 L). Processing vessels for Class II and IIIA combustible liquids shall be limited to not more than 1,100 gallons (4164 L). Processing vessels for Class IIIB combustible liquids shall be limited to not more than 20,000 gallons (75 700 L). Exception: Where the exterior wall facing the adjoining lot line is a blank wall having a fire-resistance rating of not less than 4 hours, the commissioner may modify the distances. The distance shall not be less than that set forth in the construction codes, including the Building Code, and when Class IA or unstable liquids are involved, explosion control shall be provided in accordance with FC 911. FC Table 5705.3.4(1)Separation of Processing Vessels from Lot Lines Processing Vessels with Emergency Relief VentingLocationStable liquidsUnstable liquidsNot in excess of 2.5 psigFC Table 5705.3.4(2)two and one-half timesFC Table 5705.3.4(2)Over 2.5 psigone and one-half timesFC Table 5705.3.4(2)four timesFC Table 5705.3.4(2) For SI: 1 pound per square inch gauge = 6.895 kPa. FC Table 5705.3.4(2)Reference Table for Use with FC Table 5705.3.4(1) Tank Capacity(gallons)Minimum Distance fromLot Line(feet)Minimum Distance from a Building, Public Street or Private Road(feet)275 or less55Over 275 to 750105Over 750 to 12,000155Over 12,000 to 20,000205 For SI: 1 foot = 304.8 mm, 1 gallon = 3.785 L.
