Page 453 - 2018_IFC

FLAMMABLE AND COMBUSTIBLE LIQUIDS

EXTENT OF CLASSIFIED AREA Within 3 feet of open end of vent, extending in all directions. Area between 3 feet and 15 feet from open end of vent, extending in all directions, and within 3 Within 3 feet of point of connection of both fill and vapor lines, extending in all directions. Within 3 feet of point of connection, extending in all directions, and up to 18 inches above grade within a horizontal radius of 10 feet from point of connection. Area up to 18 inches abo

TABLE 5703.1.1—continued CLASS I ELECTRICAL EQUIPMENT LOCATIONS a feet of edge of dome, extending in all directions. Pits or spaces below floor level. — such equipment. c such equipment. more than 50 percent of the tank circumference. Area above the roof and within the shell. When classifying extent of area, consideration shall be given to the fact that tank cars or tank vehicles can be spotted at varying points. Therefore, the extremities of the loading or unl

GROUP D DIVISION 1 2 2 2 1 2 Ordinary Ordinary Ordinary 1 2 1 2 1 2 1 2 1 Ordinary The release of Class I liquids can generate vapors to the extent that the entire building, and possibly a zone surrounding it, are considered a Class I, Division 2 location.

Tank vehicle and tank car b —continued Storage and repair garage for tank vehicles Garages for other than tank vehicles Outdoor drum storage could exist under normal operations could exist under normal operations Tank—Above ground Shell, ends or roof and dike area Floating roof Office and restrooms 1 inch = 25.4 mm, 1 foot = 304.8 mm. Locations as classified in NFPA 70.
LOCATION Loading through closed dome with atmospheric venting Loading through closed dome with vapor control Bottom loading with vapor control or any bottom unloading Indoor warehousing where there is no flammable liquid Indoor equipment where flammable vapor/air mixtures Outdoor equipment where flammable vapor/air mixtures

Vent
used.
For SI:
b.
c.
a.
420 transfer 2018 INTERNATIONAL FIRE CODE ®
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