Page 429 - 2018_IFC

CRYOGENIC FLUIDS

TABLE 5504.3.1.1 from exposure hazards in accordance with Table
SEPARATION OF STATIONARY 5504.3.1.2.1.
CONTAINERS FROM EXPOSURE HAZARDS
TABLE 5504.3.1.2.1
MINIMUM DISTANCE
EXPOSURE SEPARATION OF PORTABLE
(feet)
CONTAINERS FROM EXPOSURE HAZARDS
Buildings, regardless of construction type 1
EXPOSURE MINIMUM DISTANCE
Building exits 10 (feet)
Wall openings 1 Building exits 10
Air intakes 10 Wall openings 1
Lot lines 5 Air intakes 10
Places of public assembly 50 Lot lines 5
Nonambulatory patient areas 50 Combustible materials such as paper, 15
leaves, weeds, dry grass or debris
Combustible materials such as paper,
15
leaves, weeds, dry grass or debris In accordance with
Other hazardous materials
In accordance with Chapter 50
Other hazardous materials
Chapter 50 For SI: 1 foot = 304.8 mm.
For SI: 1 foot = 304.8 mm. 5504.3.1.2.2 Surfaces beneath containers. The sur-
face of the area on which stationary containers are
5504.3.1.1.1 Point-of-fill connections. Remote
transfer points and fill connection points shall not be placed, including the surface of the area located
positioned closer to exposures than the minimum below the point where connections are made for the
distances required for stationary containers. purpose of filling such containers, shall be compati-
ble with the fluid in the container.
5504.3.1.1.2 Surfaces beneath containers. Con-
tainers shall be placed on surfaces that are compati- 5504.3.1.2.3 Drainage. The area surrounding porta-
ble with the fluid in the container. ble containers shall be provided with a means to pre-
vent accidental discharge of fluids from endangering
5504.3.1.1.3 Location. Containers of cryogenic flu- adjacent containers, buildings, equipment or adjoin-
ids shall not be located within diked areas contain- ing property.
ing other hazardous materials.
Exception: These provisions shall not apply
5504.3.1.1.4 Areas subject to flooding. Stationary where it is determined by the fire code official
containers located in areas subject to flooding shall that the container does not constitute a hazard.
be securely anchored or elevated to prevent the con-
tainers from separating from foundations or sup-
ports. SECTION 5505
5504.3.1.1.5 Drainage. The area surrounding sta- USE AND HANDLING
tionary containers shall be provided with a means to 5505.1 General. Use and handling of cryogenic fluid con-
prevent accidental discharge of fluids from endan- tainers and systems shall comply with Sections 5505.1.1
gering personnel, containers, equipment and adja- through 5505.5.2.
cent structures or to enter enclosed spaces. The 5505.1.1 Cryogenic fluid systems. Cryogenic fluid sys-
stationary container shall not be placed where tems shall be suitable for the use intended and designed by
spilled or discharged fluids will be retained around persons competent in such design. Equipment, machinery
the container.
and processes shall be listed or approved.
Exception: These provisions shall not apply 5505.1.2 Piping systems. Piping, tubing, valves and joints
where it is determined by the fire code official and fittings conveying cryogenic fluids shall be installed in
that the container does not constitute a hazard, accordance with the material-specific provisions of Sec-
after consideration of special features such as tion 5501.1 and Sections 5505.1.2.1 through 5505.1.2.6.
crushed rock utilized as a heat sink, topographi-
cal conditions, nature of occupancy, proximity to 5505.1.2.1 Design and construction. Piping systems
structures on the same or adjacent property, and shall be suitable for the use intended through the full
the capacity and construction of containers and range of pressure and temperature to which they will be
character of fluids to be stored. subjected. Piping systems shall be designed and con-
structed to provide adequate allowance for expansion,
5504.3.1.2 Outdoor storage of portable containers. contraction, vibration, settlement and fire exposure.
Outdoor storage of portable containers shall comply
with Section 5503 and Sections 5504.3.1.2.1 through 5505.1.2.2 Joints. Joints on container piping and tub-
5504.3.1.2.3. ing shall be threaded, welded, silver brazed or flanged.
5504.3.1.2.1 Exposure hazard separation. Porta- 5505.1.2.3 Valves and accessory equipment. Valves
ble containers in outdoor storage shall be separated and accessory equipment shall be suitable for the

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