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 2 - Design of Gaseous Hydrogen Systems › Section R. 29.7020 - Containers

Current through Vol. 24-12, July 15, 2024
Rule 20. Section 2-1.3 is reproduced from NFPA 50A, and
						sections 2-1, 2-1.1, 2-1.2, and 2-1.4 to 2-1.8.2 of the storage and handling of
						gaseous and Liquefied H2 code are added as
						follows:
2-1 Containers.
2-1.1 H2 containers shall comply
						with 1 of the following:
(a) Designed,
					 constructed, and tested in accordance with appropriate requirements of ASME
					 International, "Boiler and Pressure Vessel Code," Section
VIII, "Rules for the construction of pressure vessels, "
						adopted by reference in section 8-1.
(b) Designed, constructed, tested, and
					 maintained in accordance with Title 49, CFR.
(c) Metal hydride storage systems shall be
					 listed for the application and designed in a manner that prevents the removal
					 of the metal hydride.
(d) When
					 allowed by the department, fully over-wrapped carbon composite containers
					 designed to a standard acceptable to the department based on the best interest
					 of public health, safety, and the environment.
2-1.2 Permanently installed aboveground containers shall
						be provided with substantial supports, constructed of noncombustible material
						on firm foundations of noncombustible material, and shall comply with the
						following subsections as applicable:
(a) Steel supports in excess of 18 inches
					 (45.72 centimeters) in height, shall have a minimum 2-hour fire resistance
					 rating, see figure 2-1.2.
Exception: Supports may be greater than 18 inches (45.72
						centimeters) if owner demonstrates, to the satisfaction of the department, that
						the container will not be exposed to a 2-hour pool fire.
(b) If a permanently installed aboveground
					 container is in an area that is subject to buoyant forces, provision shall be
					 made to prevent the container, either full or empty, from floating during a
					 rise in water level, including up to the established maximum flood
					 stage.
(c) Horizontally installed
					 containers shall have not more than 2 points of support longitudinally or other
					 methods approved by the department based on the best interest of public health,
					 safety, and welfare and the environment.
(d) Horizontally installed containers shall
					 not be in direct contact with each other.
(e) Composite containers shall be protected
					 from UV radiation as required in the manufacturer's specifications.
(f) Aboveground containers shall be protected
					 by painting or other equivalent means where necessary to inhibit corrosion.
Exception: Composite containers shall not be painted
						without prior permission from the container manufacturer.
(g) Welding or brazing for the repair or
					 alteration of an ASME pressure vessel shall comply with the standard adopted in
					 section 8-1.2.1.
(h) Other welding
					 or brazing shall be permitted only on saddle plates, lugs, or brackets which
					 are attached to the pressure vessel by the pressure vessel
					 manufacturer.
(i) The exchange or
					 interchange of pressure vessel appurtenances intended for the same purpose
					 shall not be considered a repair or alteration and appurtenances must comply
					 with these rules.
Figure 2-1 .2
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2-1.3 Each portable container shall be legibly marked
						with the name hydrogen in accordance with ANSI/CGA C-4, Method of Marking
						Portable Compressed Gas Containers to Identify the Material Contained. Each
						manifold hydrogen supply unit shall be legibly marked with the name hydrogen or
						a legend such as "This unit contains hydrogen."
2-1.4 An owner or operator that has had a container
						subjected to heat exposure due to fire shall remove the container from service,
						unless the owner or operator provides documentation of recertification in
						accordance with section 2-1.1, to the department substantiating container
						integrity.
2-1.5 Guard posts or other approved means shall be
						provided to protect a container system subject to vehicular damage. When guard
						posts are installed, all of the following design specifications shall be
						met:
(a) Guard posts shall be
					 constructed of steel not less than 4 inches (10.16 centimeters) in diameter and
					 shall be filled with concrete.
(b)
					 Guard posts shall be spaced not more than 4 feet (1.2 meters) on
					 center.
(c) Guard posts shall be
					 set not less than 4 feet (1.2 meters) deep in a concrete footing that is not
					 less than 15 inches (38.1 centimeters) in diameter.
(d) Guard posts shall be not less than 4 feet
					 (1.2 meters) in height above grade.
(e) Other means as approved by the department
					 based on the best interests of public health, safety, and welfare and the
					 environment.
2-1.6 Physical protection. Containers, piping, valves,
						pressure-relief devices, regulating equipment, and other appurtenances shall be
						protected against physical damage and tampering.
2-1.7 Portable containers subject to shifting or upset
						shall be secured. Nesting may be used to secure portable containers.
2-1.8 Underground containers. Underground containers for
						the storage of gaseous H2 shall be in accordance with
						this subsection.
2-1.8.1 Construction. Storage containers for gaseous
						H2 shall be designed and constructed in accordance with
						Section VIII of ASME International, "Boiler and Pressure Vessel Code," adopted
						by reference in section 8-1, and shall be vacuum-jacketed in accordance with
						section 2-1.10.1.1.
2-1.8.2 Corrosion Protection. The underground container
						shall be protected by an engineered corrosion protection system designed by a
						corrosion expert. If cathodic protection is used the maintenance schedule shall
						meet the requirements of section 5-4.