Page 503 - 2018_IFC

HIGHLY TOXIC AND TOXIC MATERIALS

cabinets or isolated from other hazardous material stor- other processing systems shall be installed in accor-
age by construction in accordance with the Interna- dance with the International Mechanical Code.
tional Building Code. 6003.2.4 Outdoor storage piles. Outdoor storage piles of
6003.1.5 Indoor use. Indoor use of highly toxic and toxic highly toxic and toxic solids and liquids shall be separated
3
solids and liquids shall comply with Sections 6003.1.5.1 into piles not larger than 2,500 cubic feet (71 m ). Aisle
through 6003.1.5.3. widths between piles shall be not less than one-half the
height of the pile or 10 feet (3048 mm), whichever is
6003.1.5.1 Liquid transfer. Highly toxic and toxic liq-
uids shall be transferred in accordance with Section greater.
5005.1.10. 6003.2.5 Weather protection for highly toxic liquids
and solids—outdoor storage or use. Where overhead
6003.1.5.2 Exhaust ventilation for open systems.
Mechanical exhaust ventilation shall be provided for weather protection is provided for outdoor storage or use
highly toxic and toxic liquids used in open systems in of highly toxic liquids or solids, and the weather protec-
accordance with Section 5005.2.1.1. tion is attached to a building, the storage or use area shall
either be equipped throughout with an approved automatic
Exception: Liquids that do not generate highly toxic sprinkler system in accordance with Section 903.3.1.1, or
or toxic fumes, mists or vapors. storage or use vessels shall be fire resistive. Weather pro-
6003.1.5.3 Exhaust ventilation for closed systems. tection shall be provided in accordance with Section
Mechanical exhaust ventilation shall be provided for 5004.13 for storage and Section 5005.3.9 for use.
highly toxic and toxic liquids used in closed systems in 6003.2.6 Outdoor liquid transfer. Highly toxic and toxic
accordance with Section 5005.2.2.1. liquids shall be transferred in accordance with Section
Exception: Liquids that do not generate highly toxic 5005.1.10.
or toxic fumes, mists or vapors.
6003.2 Outdoor storage and use. Outdoor storage and use SECTION 6004
of highly toxic and toxic materials shall comply with Sections HIGHLY TOXIC AND TOXIC COMPRESSED GASES
6003.2.1 through 6003.2.6.
6004.1 General. The storage and use of highly toxic and
6003.2.1 Quantities not exceeding the maximum allow- toxic compressed gases shall comply with this section.
able quantity per control area. The outdoor storage or
use of highly toxic and toxic solids or liquids in amounts 6004.1.1 Special limitations for indoor storage and use
not exceeding the maximum allowable quantity per con- by occupancy. The indoor storage and use of highly toxic
trol area indicated in Table 5003.1.1(4) shall be in accor- and toxic compressed gases in certain occupancies shall be
dance with Sections 5001, 5003 and 6001. subject to the limitations contained in Sections 6004.1.1.1
through 6004.1.1.3.
6003.2.2 Quantities exceeding the maximum allowable
quantity per control area. The outdoor storage or use of 6004.1.1.1 Group A, E, I or U occupancies. Toxic and
highly toxic and toxic solids or liquids in amounts exceed- highly toxic compressed gases shall not be stored or
ing the maximum allowable quantity per control area set used within Group A, E, I or U occupancies.
forth in Table 5003.1.1(4) shall be in accordance with Sec- Exception: Cylinders not exceeding 20 cubic feet
tions 6001 and 6003.2 and Chapter 50. (0.566 m ) at normal temperature and pressure
3
6003.2.3 General outdoor requirements. The general (NTP) are allowed within gas cabinets or fume
requirements applicable to the outdoor storage of highly hoods.
toxic or toxic solids and liquids shall be in accordance 6004.1.1.2 Group R occupancies. Toxic and highly
with Sections 6003.2.3.1 and 6003.2.3.2. toxic compressed gases shall not be stored or used in
6003.2.3.1 Location. Outdoor storage or use of highly Group R occupancies.
toxic or toxic solids and liquids shall not be located 6004.1.1.3 Offices, retail sales and classrooms. Toxic
within 20 feet (6096 mm) of lot lines, public streets, and highly toxic compressed gases shall not be stored
public alleys, public ways, exit discharges or exterior or used in offices, retail sales or classroom portions of
wall openings. A 2-hour fire barrier without openings Group B, F, M or S occupancies.
or penetrations extending not less than 30 inches (762
mm) above and to the sides of the storage is allowed in Exception: In classrooms of Group B occupancies,
lieu of such distance. The wall shall either be an inde- cylinders with a capacity not exceeding 20 cubic
3
pendent structure, or the exterior wall of the building feet (0.566 m ) at NTP are allowed in gas cabinets or
fume hoods.
adjacent to the storage area.
6004.1.2 Gas cabinets. Gas cabinets containing highly
6003.2.3.2 Treatment system—highly toxic liquids. toxic or toxic compressed gases shall comply with Section
Exhaust scrubbers or other systems for processing
5003.8.6 and the following requirements:
vapors of highly toxic liquid shall be provided where a
spill or accidental release of such liquids can be 1. The average ventilation velocity at the face of gas
expected to release highly toxic vapors at normal tem- cabinet access ports or windows shall be not less
perature and pressure (NTP). Treatment systems and than 200 feet per minute (1.02 m/s) with not less

470 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.