Page 459 - 2018_IFC

FLAMMABLE AND COMBUSTIBLE LIQUIDS

2
5704.2.8.12 Liquid removal. Means shall be provided square feet (139 m ), and is in accordance with one
to recover liquid from the vault. Where a pump is used of the following:
to meet this requirement, the pump shall not be perma- 1. Used for the storage of Class I or II liquids.
nently installed in the vault. Electric-powered portable
pumps shall be suitable for use in Class I, Division 1, or 2. Used for the storage of crude oil.
Zone 0 locations, as defined in NFPA 70. 3. Used for in-process products and is located
5704.2.8.13 Normal vents. Vent pipes that are pro- within 100 feet (30 480 mm) of a fired still,
vided for normal tank venting shall terminate not less heater, related fractioning or processing appa-
than 12 feet (3658 mm) above ground level. ratus or similar device at a processing plant or
petroleum refinery as herein defined.
5704.2.8.14 Emergency vents. Emergency vents shall
be vapor tight and shall be allowed to discharge inside 4. Considered by the fire code official as posing
the vault. Long-bolt manhole covers shall not be an unusual exposure hazard because of topo-
allowed for this purpose. graphical conditions; nature of occupancy,
proximity on the same or adjoining property,
5704.2.8.15 Accessway. Vaults shall be provided with and height and character of liquids to be
an approved personnel accessway with a minimum stored; degree of private fire protection to be
dimension of 30 inches (762 mm) and with a perma- provided; and facilities of the fire department
nently affixed, nonferrous ladder. Accessways shall be to cope with flammable liquid fires.
designed to be nonsparking. Travel distance from any
point inside a vault to an accessway shall not exceed 20 5704.2.9.2.2 Foam fire protection system installa-
feet (6096 mm). At each entry point, a warning sign tion. Where foam fire protection is required, it shall
indicating the need for procedures for safe entry into be installed in accordance with NFPA 11.
confined spaces shall be posted. Entry points shall be 5704.2.9.2.2.1 Foam storage. Where foam fire
secured against unauthorized entry and vandalism. protection is required, foam-producing materials
5704.2.8.16 Fire protection. Vaults shall be provided shall be stored on the premises.
with a suitable means to admit a fire suppression agent. Exception: Storage of foam-producing materi-
5704.2.8.17 Classified area. The interior of a vault als off the premises is allowed as follows:
containing a tank that stores a Class I liquid shall be 1. Such materials stored off the premises
designated a Class I, Division 1, or Zone 0 location, as shall be of the proper type suitable for
defined in NFPA 70. use with the equipment at the installa-
5704.2.8.18 Overfill protection. Overfill protection tion where required.
shall be provided in accordance with Section 2. Such materials shall be readily available
5704.2.9.7.5. The use of a float vent valve shall be pro- at the storage location at all times.
hibited.
3. Adequate loading and transportation
5704.2.9 Above-ground tanks. Above-ground storage of facilities shall be provided.
flammable and combustible liquids in tanks shall comply
with Section 5704.2 and Sections 5704.2.9.1 through 4. The time required to deliver such mate-
5704.2.9.7.9. rials to the required location in the event
of fire shall be consistent with the haz-
5704.2.9.1 Existing noncompliant installations. ards and fire scenarios for which the
Existing above-ground tanks shall be maintained in foam supply is intended.
accordance with the code requirements that were appli-
cable at the time of installation. Above-ground tanks 5. At the time of a fire, these off-premises
that were installed in violation of code requirements supplies shall be accumulated in suffi-
applicable at the time of installation shall be made code cient quantities before placing the
compliant or shall be removed in accordance with Sec- equipment in operation to ensure foam
tion 5704.2.14, regardless of whether such tank has production at an adequate rate without
been previously inspected (see Section 107.4). interruption until extinguishment is
accomplished.
5704.2.9.2 Fire protection. Fire protection for above-
ground tanks shall comply with Sections 5704.2.9.2.1 5704.2.9.2.3 Fire protection of supports. Supports
through 5704.2.9.2.4. or pilings for above-ground tanks storing Class I, II
or IIIA liquids elevated more than 12 inches (305
5704.2.9.2.1 Required foam fire protection sys- mm) above grade shall have a fire-resistance rating
tems. Where required by the fire code official, foam of not less than 2 hours in accordance with the fire
fire protection shall be provided for above-ground exposure criteria specified in ASTM E1529.
tanks, other than pressure tanks operating at or
above 1 pound per square inch gauge (psig) (6.89 Exceptions:
kPa) where such tank, or group of tanks spaced less 1. Structural supports tested as part of a pro-
than 50 feet (15 240 mm) apart measured shell to tected above-ground tank in accordance
shell, has a liquid surface area in excess of 1,500 with UL 2085.

426 2018 INTERNATIONAL FIRE CODE ®
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.