Michigan Administrative Code › Department - Licensing and Regulatory Affairs › Bureau of Fire Services › Storage and Handling of Gaseous and Liquefied Hydrogen Systems › Part 2 - STORAGE AND HANDLING OF GASEOUS HYDROGEN NFPA 50A › Chapter 3 - Location of Gaseous Hydrogen Systems › Section R. 29.7034 - Specific requirements

Current through Vol. 24-12, July 15, 2024
Rule 34. Sections 3-2.1, 3-2.4, 3-2.5, and table 3-2.1
						are reproduced from NFPA 50A, and table 3-2.2, sections 3-2.2, 3-2.3 and 3-2.6
						to 3-2.9 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 a system, as determined by the
						maximum total contained volume of H2, shall be in the
						order of preference as indicated by Roman numerals in table 3-2.1.
Table 3-2.1
Preferred Locations of Gaseous Hydrogen Systems
Nature of Location
Size of Hydrogen System
Less than 3500 scf (99
								  m3)
3500 scf to 15,000 scf (99
								  m3 to 425 m3)
In Excess of 15,000 scf (425 m 
								  3)
Outdoors
I
I
I
In a separate building
II
II
II
In a special room
III
III
Not permitted
Inside buildings not in a special room or exposed
								  to other occupancies
IV
Not permitted
Not permitted
3-2.2 The minimum distance in feet from an
						H2 system of indicated capacity located either outdoors,
						in separate buildings, or in special rooms to any specified outdoor exposure
						shall be in accordance with table 3-2.2. The distances in numbers 1, 3 to 10,
						and 14 inclusive in table 3-2.2 shall not apply where protective structures
						having a minimum fire resistance rating of 2 hours are located between the
						system and the exposure.
(a) An
					 aboveground H2 storage container system shall be erected
					 per table 3-2.2, but not less than 50 feet (22.9 meters), from any of the
					 following:
A school.
A church.
A hospital. A theater.
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.
Table 3-2.2
Minimum Distance from Outdoor Gaseous Hydrogen Systems
						to Exposures
Total Gaseous Hydrogen Storage
Type of Outdoor Exposure
Less than 3500 scf (99
								  m3) Feet (meter)
3500 scf to 15,000 scf (99
								  m3 to 425 m3) Feet
								  (meter)
In excess of 15,000 scf (425
								  m3) Feet (meter)
1. Building or structure (a) Wall(s) adjacent to
								  system constructed of noncombustible or limited&combustible materials
(1) Sprinklered building or structure or
								  unsprinklered building or structure having noncombustible contents
0a (0)
5a (1.5)
5a (1.5)
(2) Unsprinklered building or structure with
								  combustible contents Adjacent wall(s) with fire resistance rating less than 2
								  hoursb
0c (0)
10 (3.1)
25d (7.6)
Adjacent wall(s) with fire resistance rating of 2
								  hours or greaterb
0 (0)
5 (1.5)
5 (1.5)
(b) Wall(s) adjacent to system constructed of
								  other than noncombustible or limited&combustible materials
10 (3.1)
25 (7.6)
50d (15.2)
2. Wall openings
(a) Not above any part of a system
10 (3.1)
10 (3.1)
10 (3.1)
(b) Above any part of a system
25 (7.6)
25 (7.6)
25 (7.6)
3. All classes of flammable and combustible
								  liquids above ground
10 (3.1)
25 (7.6)
25 (7.6)
(a) 0-1000 gal (3785L)
(b) In excess of 1000 gal (3785L)
25 (7.6)
50 (15.2)
50 (15.2)
4. All classes of flammable and combustible
								  liquids below ground
0-100 gal (3785L)e
10 (3.1)
10 (3.1)
10 (3.1)
(a) Tank
(b) Vent or fill opening of tank
25 (7.6)
25 (7.6)
25 (7.6)
5. All classes of flammable and combustible
								  liquids below ground in excess of 1000 gal (3785L)e
									 (a) Tank
20 (6.1)
20 (6.1)
20 (6.1)
(b) Vent of fill opening of tank
25 (7.6)
25 (7.6)
25 (7.6)
6. Flammable gas storage (other than
								  H2), either high pressure or low pressure (a)
								  0&15,000 scf (255 me) capacity
10 (3.1)
25 (7.6)
25 (7.6)
(b) In excess of 15,000 scf (255
								  me) capacity
25 (7.6)
50 (15.2)
50 (15.2)
7. Oxygen storage (a) 20,000 scf (566
								  me) or less
Refer to NFPA 51, Standard for the
								  Design and Installation of Oxygen&Fuel Gas Systems for Welding, Cutting,
								  and Allied Processes
(b) More than 20,000 scf (566
								  me)
Refer to NFPA 55, Standard for the
								  Storage, Use, and Handling of Compressed Gases and Cryogenic Fluids in Portable
								  and Stationary Containers, Cylinders, and Tanks
8. Fast&burning solids such as ordinary
								  lumber, excelsior, or paper
50 (15.2)
50 (15.2)
5 0 (15.2) 2 5 (7.6) 2 5 (7.6) 5 0
								  (15.2) 5 0 (15.2) 1 5 (4.6) 5 (1.5) 1 0 (3.1) 1 5 (4.6) 5 0 (15.2)
9. Slow&burning solids such as heavy timber or
								  coal
25 (7.6)
25 (7.6)
10. Open flames and welding
25 (7.6)
25 (7.6)
11. Air compressor intakes or inlets to
								  ventilating or air&conditioning equipment
50 (15.2)
50 (15.2)
12. Places of public assembly less than 50 people
25 (7.6)
50 (15.2)
13 Public sidewalks and parked vehicles
15 (4.6)
15 (4.6)
14 Line of adjoining property that can be built
								  upon
5 (1.5)
5 (1.5)
15. Flammable/Combustible liquid dispenser
10 (3.1)
10 (3.1)
16. Public Way, driveway
15 (4.6)
15 (4.6)
17. Railroad
50 (15.2)
50 (15.2)
a Portions of wall less
								  than 10 ft (3m) (measured horizontally) from any part of a system shall have a
								  fire resistance rating of at least 1/2 hour. 
								  bExclusive of windows and
								  doors (see number 2 of Table 3&2.2). 
								  cPortions of walls less
								  than 10 ft (3m) (measured horizontally) from any part of a system shall have a
								  fire resistance rating of at least 1 hour. 
								  dBut not less than 1/2 the
								  height of adjacent wall of building or structure.
eDistances can be reduced
								  to 15 ft (4.5m) for Class IIIB combustible liquids.
3-2.2.1 Loose or piled combustible material and weeds and
						long dry grass shall not be within 10 feet (3.1 meters) of any system.
Roof top storage.
Construction of the building/roof that carries the load
						of the storage tank must carry a minimum 1-hour fire rating.
System must be securely mounted to roof.
System must be located to allow for inspection of the
						system acceptable to the department based on the best interest of public
						health, safety, and welfare and the environment.
3-2.3 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.
(a) H2 transfer
					 between cargo transport vehicle and stationary container systems (single or
					 multiple containers utilizing a common or manifolded transfer line), 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 only permitted between the check valve
					 and the cargo vehicle unloading connection.
(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.