Ohio Admin. Code 1301:7-7-58 - Flammable gases and flammable cryogenic fluids
(A)
Section 5801
General
(1)
5801.1 Scope. The storage and use of flammable gases and
flammable cryogenic fluids shall be in accordance with this rule and rule
1301:7-7-55 of
the Administrative Code. Compressed gases shall also comply with rule
1301:7-7-53 of
the Administrative Code and cryogenic fluids shall also comply with rule
1301:7-7-55 of
the Administrative Code. Flammable cryogenic fluids shall comply with paragraph
(F)(5806) of this rule. Hydrogen motor fuel-dispensing stations and repair
garages and their associated above-ground hydrogen storage systems shall also
be designed, constructed and maintained in accordance with rule
1301:7-7-23
of the Administrative Code and NFPA 2 as listed in rule
1301:7-7-80
of the Administrative Code.
Exceptions:
1.
Gases used as
refrigerants in refrigeration systems (see paragraph (F)(606) of rule
1301:7-7-06
of the Administrative Code).
2.
Liquefied
petroleum gases and natural gases regulated by rule
1301:7-7-61
of the Administrative Code.
3.
Fuel-gas systems
and appliances regulated under the International Fuel Gas Code as listed in
rule
1301:7-7-80
of the Administrative Code other than gaseous hydrogen systems and
appliances.
4.
Pyrophoric gases in accordance with rule
1301:7-7-64
of the Administrative Code.
(2)
5801.2 Permits.
Permits shall be required as set forth in rule
1301:7-7-01
of the Administrative Code.
(B)
Section 5802
Definitions
(1)
5802.1 Definitions. The following terms are defined in rule
1301:7-7-02 of the
Administrative Code.
"Flammable gas."
"Flammable liquefied gas."
"Gaseous hydrogen system."
"Hydrogen fuel gas room."
"Metal hydride."
"Metal hydride storage system."
(C)
Section 5803
General requirements
(1)
5803.1 Quantities not exceeding the maximum allowable
quantity per control area. The storage and use of flammable gases in amounts
not exceeding the maximum allowable quantity per control area indicated in
paragraph (C)(1)( 5003.1) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with paragraphs (A)(5001) and
(C)(5003) of rule
1301:7-7-50
of the Administrative Code, and paragraphs (A)(5801) and (C)(5803) of this
rule.
(a)
5803.1.1 Special limitations for indoor storage and use.
Flammable gases shall not be stored or used in Group A, E, I or R occupancies
or in offices in Group B occupancies.
Exceptions:
1.
Cylinders of
nonliquefied compressed gases not exceeding a capacity of 250 cubic feet ( 7.08
m3) or liquefied gases not exceeding a capacity of
40 pounds (18 kg) each at normal temperature and pressure (NTP) used for
maintenance purposes, patient care or operation of equipment.
2.
Food service
operations in accordance with paragraph (C)(2)(a)(vii) (6103.2.1.7) of rule
1301:7-7-61
of the Administrative Code.
3.
Hydrogen gas
systems located in a hydrogen fuel gas room constructed in accordance with
section 421 of the building code as listed in rule
1301:7-7-80
of the Administrative Code.
(i)
5803.1.1.1 Medical gases. Medical gas system supply
cylinders shall be located in medical gas storage rooms or gas cabinets as set
forth in paragraph (F)(5306) of rule
1301:7-7-53 of
the Administrative Code.
(ii)
5803.1.1.2 Aggregate quantity. The aggregate quantities
of flammable gases used for maintenance purposes and operation of equipment
shall not exceed the maximum allowable quantity per control area indicated in
Table 5003.1.1(1) of rule
1301:7-7-50
of the Administrative Code.
(b)
5803.1.2 Storage
containers. Cylinders and pressure vessels for flammable gases shall be
designed, constructed, installed, tested and maintained in accordance with rule
1301:7-7-53 of
the Administrative Code.
(c)
5803.1.3 Emergency shutoff Compressed gas systems
conveying flammable gases shall be provided with approved manual or automatic
emergency shutoff valves that can be activated at each point of use and at each
source.
(i)
5803.1.3.1 Shutoff at source. A manual or automatic
fail-safe emergency shutoff valve shall be installed on supply piping at the
cylinder or bulk source. Manual or automatic cylinder valves are allowed to be
used as the required emergency shutoff valve where the source of supply is
limited to unmanifolded cylinder sources.
(ii)
5803.1.3.2
Shutoff at point of use. A manual or automatic emergency shutoff valve shall be
installed on the supply piping at the point of use or at a point where the
equipment using the gas is connected to the supply system.
(d)
5803.1.4 Ignition source control. Ignition sources in areas
containing flammable gases in storage or in use shall be controlled in
accordance with paragraph (C)(7)( 5003.7) of rule
1301:7-7-50
of the Administrative Code.
Exception: Fuel gas systems connected to building service utilities in accordance with the International Fuel Gas Code as listed in rule 1301:7-7-80 of the Administrative Code.
(i)
5803.1.4.1 Static producing equipment. Static-producing
equipment located in flammable gas storage areas shall be
grounded.
(ii)
5803.1.4.2 Signs. "No Smoking" signs shall be posted at
entrances to rooms and in areas containing flammable gases in accordance with
paragraph (C)(7)(a)(5003.7.1) of rule
1301:7-7-50
of the Administrative Code.
(e)
5803.1.5
Electrical. Electrical wiring and equipment shall be installed and maintained
in accordance with paragraph (E)(605) of rule
1301:7-7-06
of the Administrative Code and NFPA 70 as listed in rule
1301:7-7-80
of the Administrative Code.
(i)
5803.1.5.1 Bonding of electrically conductive
materials and equipment. Exposed noncurrent-carrying metal parts, including
metal gas piping systems, that are part of flammable gas supply systems located
in a hazardous (electrically classified) location shall be bonded to a grounded
conductor in accordance with the provisions of NFPA 70 as listed in rule
1301:7-7-80
of the Administrative Code.
(ii)
5803.1.5.2
Static-producing equipment. Static-producing equipment located in flammable gas
storage or use areas shall be grounded.
(f)
5803.1.6
Liquefied flammable gases and flammable gases in solution. Containers of
liquefied flammable gases and flammable gases in solution shall be positioned
in the upright position or positioned so that the pressure relief valve is in
direct contact with the vapor space of the container.
Exceptions:
1.
Containers of
flammable gases in solution with a capacity of 1.3 gallons (5 L) or less.
2.
Containers of flammable liquefied gases, with a capacity not
exceeding 1.3 gallons (5 L), designed to preclude the discharge of liquid from
safety relief devices.
(2)
5803.2 Quantities
exceeding the maximum allowable quantity per control area. The storage and use
of flammable gases in amounts exceeding the maximum allowable quantity per
control area indicated in paragraph (C)(1)( 5003.1) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with rule
1301:7-7-50
of the Administrative Code and this rule.
(D)
Section 5804
Storage
(1)
5804.1 Indoor storage. Indoor storage of flammable gases in
amounts exceeding the maximum allowable quantity per control area indicated in
Table 5003.1.1(1) of rule
1301:7-7-50
of the Administrative Code, shall be in accordance with paragraphs (A)(5001),
(C)(5003) and (D)(5004) of rule
1301:7-7-50
of the Administrative Code, and this rule.
(a)
5804.1.1
Explosion control. Buildings or portions thereof containing flammable gases
shall be provided with explosion control in accordance with paragraph (K)(911)
of rule
1301:7-7-09
of the Administrative Code.
(2)
5804.2 Outdoor
storage. Outdoor storage of flammable gases in amounts exceeding the maximum
allowable quantity per control area indicated in Table 5003.1.1(3) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with paragraphs (A)(5001),
(C)(5003) and (D)(5004) of rule
1301:7-7-50
of the Administrative Code, and this rule.
(E)
Section 5805
Use
(1)
5805.1
General. The use of flammable gases in amounts exceeding the maximum allowable
quantity per control area indicated in Table 5003.1.1(1) or 5003.1.1(3) of rule
1301:7-7-50
of the Administrative Code shall be in accordance with paragraphs (A)(5001),
(C)(5003) and (E)(5005) of rule
1301:7-7-50
of the Administrative Code, and this rule.
(F)
Section 5806
Flammable cryogenic fluids
(1)
5806.1 General. The storage and use of flammable
cryogenic fluids shall be in accordance with paragraphs (F)(2)( 5806.2) to
(F)(4)(g)(iii)(5806.4.8.3) of this rule and rule
1301:7-7-55 of
the Administrative Code.
(2)
5806.2 Limitations. Storage of flammable cryogenic
fluids in stationary containers outside of buildings is prohibited within the
limits established by law as the limits of districts in which such storage is
prohibited.
(3)
5806.3 Above-ground tanks for liquid hydrogen.
Above-ground tanks for the storage of liquid hydrogen shall be in accordance
with paragraphs (F)(3) ( 5806.3) to (F)(3)(b)(i)(5806.3.2.1) of this
rule.
(a)
5806.3.1 Construction of the inner vessel. The inner vessel
of storage tanks in liquid hydrogen service shall be designed and constructed
in accordance with Section VIII, Division 1 of the ASME Boiler and Pressure
Vessel Code as listed in rule
1301:7-7-80
of the Administrative Code and shall be vacuum jacketed in accordance with
paragraph (F)(3) (b)(5806.3.2) of this rule.
(b)
5806.3.2
Construction of the vacuum jacket (outer vessel). The vacuum jacket used as an
outer vessel for storage tanks in liquid hydrogen service shall be of welded
steel construction designed to withstand the maximum internal and external
pressure to which it will be subjected under operating conditions to include
conditions of emergency pressure relief of the annular space between the inner
and outer vessel. The jacket shall be designed to withstand a minimum
collapsing pressure differential of 30 psi (207 kPa).
(i)
5806.3.2.1 Vacuum
level monitoring. A connection shall be provided on the exterior of the vacuum
jacket to allow measurement of the pressure within the annular space between
the inner and outer vessel. The connection shall be fitted with a
bellows-sealed or diaphragm-type valve equipped with a vacuum gauge tube that
is shielded to protect against damage from impact.
(4)
5806.4
Underground tanks for liquid hydrogen. Underground tanks for the storage of
liquid hydrogen shall be in accordance with paragraphs (F)(4)(a)(5806.4.1) to
(F)(4)(g)(iii)(5806.4.8.3) of this rule.
(a)
5806.4.1
Construction. Storage tanks for liquid hydrogen shall be designed and
constructed in accordance with ASME Boiler and Pressure Vessel Code (Section
VIII, Division 1) as listed in rule
1301:7-7-80
of the Administrative Code and shall be vacuum jacketed in accordance with
paragraph (F)(4)(h)(5806.4.8) of this rule.
(b)
5806.4.2
Location. Storage tanks shall be located outside in accordance with the
following:
(i)
Tanks and associated equipment shall be located with respect
to foundations and supports of other structures such that the loads carried by
the latter cannot be transmitted to the tank.
(ii)
The distance
from any part of the tank to the nearest wall of a basement, pit, cellar or lot
line shall be not less than 3 feet (914 mm).
(iii)
A minimum
distance of 1 foot (305 mm), shell to shell, shall be maintained between
underground tanks.
(c)
5806.4.3 Depth,
cover and fill. The tank shall be buried such that the top of the vacuum jacket
is covered with not less than 1 foot (305 mm) of earth and with concrete not
less than 4 inches (102 mm) thick placed over the earthen cover. The concrete
shall extend not less than 1 foot (305 mm) horizontally beyond the footprint of
the tank in all directions. Underground tanks shall be set on firm foundations
constructed in accordance with the building code as listed in rule
1301:7-7-80
of the Administrative Code and surrounded with not less than 6 inches (152 mm)
of noncorrosive inert material, such as sand.
Exception: The vertical extension of the vacuum jacket as required for service connections.
(d)
5806.4.4
Anchorage and security. Tanks and systems shall be secured against accidental
dislodgement in accordance with this rule.
(e)
5806.4.5 Venting
of underground tanks. Vent pipes for underground storage tanks shall be in
accordance with (paragraph (C)(3)( 5503.3) of rule
1301:7-7-55 of
the Administrative Code.
(f)
5806.4.6 Underground liquid hydrogen piping.
Underground liquid hydrogen piping shall be vacuum jacketed or protected by an
approved means and designed in accordance with rule
1301:7-7-55 of
the Administrative Code.
(g)
5806.4.7 Overfill protection and prevention systems. An
approved means or method shall be provided to prevent the overfill of all
storage tanks.
(h)
5806.4.8 Vacuum jacket construction. The vacuum jacket
shall be designed and constructed in accordance with Section VIII of ASME
Boiler and Pressure Vessel Code as listed in rule
1301:7-7-80
of the Administrative Code and shall be designed to withstand the anticipated
loading, including loading from vehicular traffic, where applicable. Portions
of the vacuum jacket installed below grade shall be designed to withstand
anticipated soil, seismic and hydrostatic loading.
(i)
5806.4.8.1
Material. The vacuum jacket shall be constructed of stainless steel or other
approved corrosion-resistant material.
(ii)
5806.4.8.2
Corrosion protection. The vacuum jacket shall be protected by approved or
listed corrosion-resistant materials or an engineered cathodic protection
system. Where cathodic protection is utilized, an approved maintenance schedule
shall be established. Exposed components shall be inspected not less than twice
a year. Records of maintenance and inspection events shall be
maintained.
(iii)
5806.4.8.3 Vacuum level monitoring. An approved method
shall be provided to indicate loss of vacuum within the vacuum
jacket(s).
(G)
Section 5807
Metal hydride storage systems
(1)
5807.1 General requirements. The storage and use of
metal hydride storage systems shall be in accordance with paragraphs (A)(5801),
(C)(5803), (D) (5804), (E)(5805) and (G)(5807) of this rule. Those portions of
the system that are used as a means to store or supply hydrogen shall also
comply with rules
1301:7-7-50
and
1301:7-7-53 of
the Administrative Code as applicable.
(a)
5807.1.1
Classification. The hazard classification of the metal hydride storage system,
as required by paragraph (A)(2)(b)(5001.2.2) of rule
1301:7-7-50
of the Administrative Code, shall be based on the hydrogen stored without
regard to the metal hydride content.
(b)
5807.1.2 Listed
or approved systems. Metal hydride storage systems shall be listed or approved
for the application and designed in a manner that prevents the addition or
removal of the metal hydride by other than the original equipment
manufacturer.
(c)
5807.1.3 Containers, design and construction.
Compressed gas containers, cylinders and tanks shall be designed and
constructed in accordance with paragraph (C)(2)( 5303.2) of rule
1301:7-7-53 of
the Administrative Code.
(d)
5807.1.4 Service life and inspection of containers.
Metal hydride storage system cylinders, containers or tanks shall be inspected,
tested and requalified for service at not less than 5- year
intervals.
(e)
5807.1.5 Marking and labeling. Marking and labeling of
cylinders, containers, tanks and systems shall be in accordance with paragraph
(C)(4)( 5303.4) of rule
1301:7-7-53 of
the Administrative Code and paragraphs (G)(1)(e)(i)(5807.1.5.1) to
(G)(1)(e)(iv)(5807.1.5.4) of this rule.
(i)
5807.1.5.1 System
marking. Metal hydride storage systems shall be marked with all of the
following:
(a)
Manufacturer's name.
(b)
Service life
indicating the last date the system can be used.
(c)
A unique code or
serial number specific to the unit.
(d)
System name or
product code that identifies the system by the type of chemistry used in the
system.
(e)
Emergency contact name, telephone number or other
contact information.
(f)
Limitations on refilling of containers to include rated
charging pressure and capacity.
(ii)
5807.1.5.2 Valve
marking. Metal hydride storage system valves shall be marked with the
following:
(a)
Manufacturer's name;
(b)
Service life
indicating the last date the valve can be used; and
(c)
Metal hydride
service in which the valve can be used, or a product code that is traceable to
this information.
(iii)
5807.1.5.3
Pressure relief device marking. Metal hydride storage system pressure relief
devices shall be marked with all of the following:
1.
Manufacturer's
name.
2.
Metal hydride service in which the device can be used,
or a product code that is traceable to this information.
3.
Activation
parameters to include temperature, pressure or both.
(a)
5807.1.5.3.1
Pressure relief devices integral to container valves. The required markings for
pressure relief devices that are
integral
components of valves used on cylinders, containers and tanks shall be allowed
to be placed on the valve.
(iv)
5807.1.5.4
Pressure vessel markings. Cylinders, containers and tanks used in metal hydride
storage systems shall be marked with all of the following:
(a)
Manufacturer's
name.
(b)
Design specification to which the vessel was
manufactured.
(c)
Authorized body approving the design and initial
inspection and test of the vessel.
(d)
Manufacturer's
original test date.
(e)
Unique serial number for the vessel.
(f)
Service life
identifying the last date the vessel can be used.
(g)
System name or
product code that identifies the system by the type of chemistry used in the
system.
(f)
5807.1.6
Temperature extremes. Metal hydride storage systems, whether full or partially
full, shall not be exposed to artificially created high temperatures exceeding
125°F (52°C) or subambient (low) temperatures unless designed for use under the
exposed conditions.
(g)
5807.1.7 Falling objects. Metal hydride storage systems
shall not be placed in areas where they are capable of being damaged by falling
objects.
(h)
5807.1.8 Piping systems. Piping, including tubing,
valves, fittings and pressure regulators, serving metal hydride storage
systems, shall be maintained gas tight to prevent leakage.
(i)
5807.1.8.1
Leaking systems. Leaking systems shall be removed from
service.
(i)
5807.1.9 Refilling of containers. The refilling of
listed or approved metal hydride storage systems shall be in accordance with
the listing requirements and manufacturers' instructions.
(i)
5807.1.9.1
Industrial trucks. The refilling of metal hydride storage systems serving
powered industrial trucks shall be in accordance with paragraph (I)(309) of
rule
1301:7-7-03
of the Administrative Code.
(ii)
5807.1.9.2
Hydrogen purity. The purity of hydrogen used for the purpose of refilling
containers shall be in accordance with the listing and the manufacturer's
instructions.
(j)
5807.1.10 Electrical. Electrical components for metal
hydride storage systems shall be designed, constructed, and installed in
accordance with NFPA 70 as listed in rule
1301:7-7-80
of the Administrative Code.
(2)
5807.2 Portable
containers or systems. Portable containers or systems shall comply with
paragraphs (F)(2)(a)(5807.2.1) to (F)(2)(b)(5807.2.2) of this rule.
(a)
5807.2.1 Securing
containers. Containers, cylinders and tanks shall be secured in accordance with
paragraph (C)(5)(c)(5303.5.3) of rule
1301:7-7-53 of
the Administrative Code.
(i)
5807.2.1.1 Use on mobile equipment. Where a metal
hydride storage system is used on mobile equipment, the equipment shall be
designed to restrain containers, cylinders or tanks from dislodgement, slipping
or rotating when the equipment is in motion.
(ii)
5807.2.1.2
Motorized equipment. Metal hydride storage systems used on motorized equipment,
shall be installed in a manner that protects valves, pressure regulators,
fittings and controls against accidental impact.
(a)
5807.2.1.2.1
Protection from damage. Metal hydride storage systems, including cylinders,
containers, tanks and fittings, shall not extend beyond the platform of the
mobile equipment.
(b)
5807.2.2 Valves. Valves on containers, cylinders and
tanks shall remain closed except when containers are connected to closed
systems and ready for use.
(H)
Section 5808 Hydrogen fuel gas rooms
(1)
5808.1 General.
Where required by this rule, hydrogen fuel gas rooms shall be designed and
constructed in accordance with paragraphs (H)(1)( 5808.1) to (H) (7)( 5808.7)
of this rule and the building code as listed in rule
1301:7-7-80
of the Administrative Code.
(2)
5808.2 Location.
Hydrogen fuel gas rooms shall not be located below grade.
(3)
5808.3 Design and
construction. Hydrogen fuel gas rooms not exceeding the maximum allowable
quantity per control area in Table 5003.1.1(1) of rule
1301:7-7-50
of the Administrative Code shall be separated from other areas of the building
in accordance with section 509.1 of the building code as listed in rule
1301:7-7-80
of the Administrative Code.
(a)
5808.3.1 Pressure control. Hydrogen fuel gas rooms
shall be provided with a ventilation system designed to maintain the room at a
negative pressure in relation to surrounding rooms and spaces.
(b)
5808.3.2 Windows.
Operable windows in interior walls shall not be permitted. Fixed windows shall
be permitted where in accordance with section 716 of the building code as
listed in rule
1301:7-7-80
of the Administrative Code.
(4)
5808.4 Exhaust
ventilation. Hydrogen fuel gas rooms shall be provided with mechanical exhaust
ventilation in accordance with the applicable provisions of paragraph
(K)(7)(a)(i)(2311.7.1.1) of rule
1301:7-7-23
of the Administrative Code.
(5)
5808.5 Gas
detection system. Hydrogen fuel gas rooms shall be provided with an approved
flammable gas detection system in accordance with paragraphs (H)
(5)(a)(5808.5.1) to (H)(5)(d)(5808.5.4) of this rule.
(a)
5808.5.1 System
design. The flammable gas detection system shall be listed for use with
hydrogen and any other flammable gases used in the hydrogen fuel gas room. The
gas detection system shall be designed to activate when the level of flammable
gas exceeds 25 per cent of the lower flammable limit (LFL) for the gas or
mixtures present at their anticipated temperature and pressure.
(b)
5808.5.2 Gas
detection system components. Gas detection system control units shall be listed
and labeled in accordance with UL 864 or UL 2017 as listed in rule
1301:7-7-80
of the Administrative Code. Gas detectors shall be listed and labeled in
accordance with UL 2075 as listed in rule 1301:7-7-80 of the Administrative
Code for use with the gases and vapors being detected.
(c)
5808.5.3
Operation. Activation of the gas detection system shall result in both of the
following:
(i)
Initiation of distinct audible and visual alarm signals both
inside and outside of the hydrogen fuel gas room.
(ii)
Activation of
the mechanical exhaust ventilation system.
(d)
5808.5.4 Failure
of the gas detection system. Failure of the gas detection system shall result
in activation of the mechanical exhaust ventilation system, cessation of
hydrogen generation and the sound of a trouble signal in an approved
location.
(6)
5808.6 Explosion control. Explosion control shall be
provided where required by paragraph (K)(911) of rule
1301:7-7-09
of the Administrative Code.
(7)
5808.7 Standby
power. Mechanical ventilation and gas detection systems shall be connected to a
standby power system in accordance with paragraph (D)(604) of rule
1301:7-7-06
of the Administrative Code.
Replaces: 1301:7-7-35.
Notes
Promulgated Under: 119.03
Statutory Authority: 3737.22, 3737.82, 3737.83
Rule Amplifies: 3737.22, 3737.82, 3737.83
Prior Effective Dates: 07/01/1979, 06/01/1985, 06/15/1992, 07/01/1993, 09/01/1995, 03/30/1998, 09/01/2005, 07/01/2007, 11/01/2011
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