Michigan Administrative Code › Department - Licensing and Regulatory Affairs › Bureau of Fire Services › Storage and Handling of Gaseous and Liquefied Hydrogen Systems › Part 3 - STORAGE AND HANDLING OF LIQUEFIED HYDROGEN NFPA 50B › Chapter 3 - Location of liquefied hydrogen systems › Section R. 29.7098 - Specific requirements

Current through Vol. 24-12, July 15, 2024
Rule 98. Sections 3-2.1, 3-2.4 and table 3-2.1 are
						reproduced from NFPA 50B, and sections 3-2.2, 3-2.2.1, 3-2.3, 3-2.5 to 3-2.8
						and table 3-2.2 of the storage and handling of gaseous and Liquefied
						H2 code are added as follows:
3-2 Specific requirements.
3-2.1 The location of liquefied hydrogen storage, as
						determined by the maximum total quantity of liquefied hydrogen, shall be in the
						order of preference indicated by the Roman numerals in table 3-2.1.
Table 3-2.1 Preferred Locations of Liquefied
						Hydrogen Systems
Nature of Location
Size of Hydrogen Storage
39.63 gal to 50 gal (150 L to 189.25 L)
51 gal to 300 gal (193.03 L to 1135.5 L)
301 gal to 600 gal (1139.29 L to 2271 L)
In excess of 600 gal (2271 L)
Outdoors
I
I
I
I
In a separate building
II
II
II
Not permitted
In a special room
III
III
Not permitted
Not permitted
Inside buildings Not in a special room or exposed
								  to other occupancies
IV
Not permitted
Not permitted
Not permitted
3-2.2 The minimum distance in feet from liquefied
						H2 systems of indicated storage capacity located either
						outdoors, in a separate building, or in a special room to any specified
						exposure shall be in accordance with table 3-2.2.
Exception: The distances in numbers 1, 4, 6, 7, 8, and 11
						in table 3-2.2 may be reduced by 2/3, but not to less than 5 feet (1.5 meters),
						for insulated portions of the systems. For uninsulated portions of the system,
						the distances may be reduced by the use of protective structures having a
						minimum fire resistance rating of 2 hours. The protective structure or the
						insulated liquefied H2 container shall interrupt the
						line of sight between uninsulated portions of the liquefied
						H2 storage system and the exposure.
(a) An aboveground H2
					 storage container system shall be erected per table 3-2.2 but not less than 75
					 feet (22.9 meters) from any of the following:
(i) A school.
(ii) A church.
(iii) A hospital.
(iv) A theater.
(v) Assembly occupancy for 50 or more
					 persons.
Exception: The restrictions in section 3-2.2(a) shall not
						apply to an aboveground H2 system used exclusively for
						stationary power generation.
3-2.2.1 Loose or piled combustible materials and weeds
						and long dried grass shall not be permitted within 10 feet (3.1 meters) of any
						system.
Table 3-2.2 Minimum Distance from Liquefied Hydrogen
						Systems to Exposures
Total Liquefied
								  H2 Storage
Type of Exposure
39.63 gal to 3,500 gal (ft)
3,501 gal to 15,000 gal (ft)
15,001 gal to 75,000 gal (ft)
1. Building or structure
(a) Wall(s) adjacent to system constructed of
								  non-combustible or limited-combustible materials
(1)Sprinklered building or structure or
								  unsprinklered building or structure having noncombustible contents
5a
5a
5a
(2) Unsprinklered building or structure with
								  combustible contents.
25
50
75
Adjacent wall(s) with fire resistance rating less
								  than 3 hoursb
Adjacent wall(s) with fire resistance rating of 3
								  hours or greaterb
5
5
5
(b) Wall(s) adjacent to system constructed of
								  combustible materials (1) Sprinklered building or structure
50
50
50
(2) Unsprinklered building or structure
50
75
100
2. Wall openings (a) Openable
75
75
75
(b) Unopenable
25
50
50
3. Air compressor intakes or inlets for
								  air-conditioning or ventilating equipment
75
75
75
4. All classes of flammable and combustible liquid
								  containers (above ground, and vent or fill openings if
below
								  ground)
(see -1.3)c
50
75
100
5. Between stationary liquefied
								  H
2
containers
5
5
5
6. Flammable gas storage other than
								  H
2
50
75
75
7. Liquid oxygen storage and other oxidizers (see
								  3&1.3)
75
75
75
8. Combustible solids
50
75
100
9. Open flames and welding
50
50
50
10. Places of public assembly for 50 or more
								  persons
75
75
75
11. Public ways, railroads, and property lines
25
50
75
12. Inlet to underground sewers
10
10
10
13. Places of public assembly less than 50 people
25
50
50
14. Flammable/Combustible liquid dispenser other
								  than H2
10
10
10
For SI units: 1 ft = 0.305 m; 1 gal =
								  3.785 L. a Portions of wall less than 10 ft (3 m) (measured horizontally) from
								  any part of a system shall have a fire resistance rating of at least 1/2 hour.
								  b Exclusive of windows and doors. c Distances can be reduced to 15 ft (4.6 m)
								  for class IIIB combustible liquids.
3-2.3 Cargo transport unloading. Unloading connections on
						delivery equipment shall not be positioned closer to any of the exposures cited
						in table 3-2.2 than the distances given for the storage system. The following
						shall apply:
(a) For stationary
					 container system installations or stationary multiple container systems
					 utilizing a common or manifolded transfer line, or railroad tank car transfer
					 systems to fill trucks with no stationary storage involved shall comply with
					 all of the following:
(i) Owners and
					 operators shall ensure that fixed piping is used between the container and
					 master shutoff and check valves. The piping and manifolds shall be secured to
					 the container frame. Flexible hoses are permitted between the check valve and
					 the cargo vehicle unloading connection.
Exception: Bulkheads will be located at a minimum of 1.5
						feet (45.72 centimeters) when crash protection is provided at 10 feet (3.1
						meters) from storage container.
(ii) Emergency shutoff valves required in
					 this section shall be tested annually for proper operation. The results of the
					 tests shall be documented.
(iii)
					 All installations shall have at least 1 clearly identified and easily
					 accessible manually operated remote emergency shutoff device. Within 1 year
					 after the effective date of these rules, existing installations shall have at
					 least 1 clearly identified and easily accessible manually operated remote
					 emergency shutoff device. The emergency shutoff device shall be located not
					 less than 20 feet (6.1 meters) nor more than 100 feet (30.5 meters) in the path
					 of egress from the emergency shutoff valve and not less than 20 feet (6.1
					 meters) from the container system.
(iv) During transfer of
					 H2 to and from cargo vehicles, the hand or emergency
					 brake of the vehicle shall be set, and chock blocks shall be used to prevent
					 rolling of the vehicle.
(v)
					 Transfer systems shall be capable of depressurizing to facilitate
					 disconnection. Bleed connections shall lead to a safe point of
					 discharge.
(vi) Cargo vehicle shall
					 be equipped with air-brake interlock in front of the unloading connection to
					 protect against drive-away.