Page 463 - 2018_IFC

FLAMMABLE AND COMBUSTIBLE LIQUIDS

2. The distance from any part of a tank storing liq- or be removed in accordance with Section
uids to the nearest wall of a basement, pit, cellar 5704.2.14:
or lot line shall be not less than 3 feet (914 mm). 1. Flammable or combustible liquids shall be
3. A minimum distance of 1 foot (305 mm), shell to removed from the tank.
shell, shall be maintained between underground 2. All piping, including fill line, gauge opening,
tanks. vapor return and pump connection, shall be
5704.2.11.2 Depth and cover. Excavation for under- capped or plugged and secured from tamper-
ground storage tanks shall be made with due care to ing.
avoid undermining of foundations of existing struc- 3. Vent lines shall remain open and be main-
tures. Underground tanks shall be set on firm founda- tained in accordance with Sections 5704.2.7.3
tions and surrounded with not less than 6 inches (152 and 5704.2.7.4.
mm) of noncorrosive inert material, such as clean sand.
5704.2.13.1.3 Out of service for one year. Under-
5704.2.11.3 Overfill protection and prevention sys- ground tanks that have been out of service for a
tems. Fill pipes shall be equipped with a spill container period of one year shall be removed from the ground
and an overfill prevention system in accordance with in accordance with Section 5704.2.14 or abandoned
NFPA 30.
in place in accordance with Section 5704.2.13.1.4.
5704.2.11.4 Leak prevention. Leak prevention for 5704.2.13.1.4 Tanks abandoned in place. Tanks
underground tanks shall comply with Sections abandoned in place shall be as follows:
5704.2.11.4.1 and 5704.2.11.4.2.
1. Flammable and combustible liquids shall be
5704.2.11.4.1 Inventory control. Daily inventory removed from the tank and connected piping.
records for underground storage tank systems shall
be maintained. 2. The suction, inlet, gauge, vapor return and
vapor lines shall be disconnected.
5704.2.11.4.2 Leak detection. Underground storage
tank systems shall be provided with an approved 3. The tank shall be filled completely with an
method of leak detection from any component of the approved inert solid material.
system that is designed and installed in accordance 4. Remaining underground piping shall be
with NFPA 30. capped or plugged.
5704.2.12 Testing. Tank testing shall comply with Sec- 5. A record of tank size, location and date of
tions 5704.2.12.1 and 5704.2.12.2. abandonment shall be retained.
5704.2.12.1 Acceptance testing. Prior to being placed 6. All exterior above-grade fill piping shall be
into service, tanks shall be tested in accordance with permanently removed when tanks are aban-
Section 21.5 of NFPA 30. doned or removed.
5704.2.12.2 Testing of underground tanks. Before 5704.2.13.1.5 Reinstallation of underground
being covered or placed in use, tanks and piping con- tanks. Tanks that are to be reinstalled for flammable
nected to underground tanks shall be tested for tight- or combustible liquid service shall be in accordance
ness in the presence of the fire code official. Piping with this chapter, ASME Boiler and Pressure Vessel
shall be tested in accordance with Section 5703.6.3. Code (Section VIII), API 12-P, API 1615, UL 58
The system shall not be covered until it has been and UL 1316.
approved.
5704.2.13.2 Above-ground tanks. Above-ground
5704.2.13 Abandonment and status of tanks. Tanks tanks taken out of service shall comply with Sections
taken out of service shall be removed in accordance with 5704.2.13.2.1 through 5704.2.13.2.3.
Section 5704.2.14, or safeguarded in accordance with Sec-
tions 5704.2.13.1 through 5704.2.13.2.3 and API 1604. 5704.2.13.2.1 Temporarily out of service. Above-
ground tanks temporarily out of service shall have
5704.2.13.1 Underground tanks. Underground tanks all connecting lines isolated from the tank and be
taken out of service shall comply with Sections secured against tampering.
5704.2.13.1.1 through 5704.2.13.1.5.
Exception: In-place fire protection (foam) sys-
5704.2.13.1.1 Temporarily out of service. Under- tem lines.
ground tanks temporarily out of service shall have
the fill line, gauge opening, vapor return and pump 5704.2.13.2.2 Out of service for 90 days. Above-
connection secure against tampering. Vent lines ground tanks not used for a period of 90 days shall be
safeguarded in accordance with Section 5704.2.13.1.2
shall remain open and be maintained in accordance
with Sections 5704.2.7.3 and 5704.2.7.4. or removed in accordance with Section 5704.2.14.
5704.2.13.1.2 Out of service for 90 days. Under- Exceptions:
ground tanks not used for a period of 90 days shall 1. Tanks and containers connected to oil burn-
be safeguarded in accordance with all the following ers that are not in use during the warm sea-

430 2018 INTERNATIONAL FIRE CODE ®
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