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 2 - Design of liquefied hydrogen systems › Section R. 29.7079 - Containers

Current through Vol. 24-12, July 15, 2024
Rule 79. Sections 2-1 to 2-1.10.1.3 and figure 2-1.2 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 the following.
(a) Storage
					 containers shall be designed, constructed, and tested in accordance with
					 appropriate requirements of the ASME "Boiler and Pressure Vessel Code," section
					 VIII, "Rules for the Construction of Pressure Vessels," adopted by reference in
					 section 8-1.
(b) Portable
					 containers shall be designed, constructed, and tested in accordance with title
					 49 CFR.
(c) 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.
(d) 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.
(e) The exchange or interchange of pressure
					 vessel appurtenances intended for the same purpose shall not be considered a
					 repair or alteration but must comply with these rules.
2-1.2 Permanently installed containers shall be provided
						with substantial supports of noncombustible material securely anchored on firm
						foundations of noncombustible material, and shall comply with the following
						subsections as applicable:
(a) Steel
					 supports in excess of 18 inches (46 centimeters) in height shall be protected
					 with a protective coating having a 2-hour fire resistance rating, see figure
					 2-1.2.
(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) Aboveground containers shall be protected
					 by painting or other equivalent means where necessary to inhibit
					 corrosion.
(f) Temperature effects.
					 Foundations or supports that could come in contact with the cryogenic fluid in
					 the event of a spillage, such as at fill connections, and flanges, shall be
					 constructed of materials that are capable of withstanding the cryogenic
					 temperature effects, such as concrete and stainless steel.
(g) Excessive loads. Stationary containers
					 shall be supported to prevent the concentration of excessive loads causing
					 differential settlement of the support system.
(h) Expansion and contraction. Foundations
					 for horizontal containers shall be constructed to accommodate expansion and
					 contraction of the container.
(i)
					 Support of ancillary equipment. Foundations shall be provided to support the
					 weight of ancillary equipment such as vaporizers and/or heat exchangers.
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2-1.3 Marking. Liquefied H2
						containers and systems shall be marked in accordance with this section.
2-1.3.1 Portable containers. Portable containers shall be
						marked in accordance with CGA C-7, "Guide to the Preparation of Precautionary
						Labeling and Marking of Compressed Gas Containers," adopted by reference in
						section 8.
2-1.3.2 Stationary containers. Stationary containers
						shall be marked in accordance with NFPA 704, "Standard Systems for the
						Identification of the Hazards of Materials for Emergency Response," adopted by
						reference in section 8.
2-1.3.3 Identification of contents. Each container shall
						be marked as follows:
LIQUEFIED HYDROGEN - FLAMMABLE GAS in letters that are
						not less than 3 inches (7.62 centimeters) in height.
2-1.3.4 Container specification. Stationary containers
						shall be marked with the manufacturing specification and maximum allowable
						working pressure on a permanent nameplate in accordance with the standard to
						which the container was manufactured.
2-1.4 An owner or operator that has had a container
						subjected to heat exposure due to an engulfing fire, a fire in which at least
						25% of the container surface is exposed, shall remove the container from
						service, and shall not return the container to service, unless the owner or
						operator provides documentation to substantiate mechanical and performance
						integrity of the container in accordance with section 2-1.1 to the department.
						Such documentation shall be issued by a qualified engineer.
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 shall be permitted as a means of securing portable
						containers.
2-1.8 Overfill protection and prevention systems. An
						approved means or method shall be provided to prevent the overfilling of
						storage containers.
2-1.9 Vacuum level monitoring. An approved monitoring
						method shall be provided to indicate vacuum degradation within the vacuum
						jacket(s).
2-1.10 Underground containers. Underground containers for
						the storage of liquefied H2 shall be in accordance with
						this subsection.
2-1.10.1 Construction. Storage containers for liquefied
						H2 shall be designed and constructed in accordance with
						section VIII of ASME "Boiler and Pressure Vessel Code," adopted by reference in
						section 8, and shall be vacuum-jacketed in accordance with section
						2-1.10.1.1.
2-1.10.1.1 Vacuum jacket construction. The vacuum jacket
						shall be designed and constructed in accordance with section VIII of ASME
						"Boiler and Pressure Vessel 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, hydrostatic, and seismic
						loading.
2-1.10.1.2 Material. The vacuum jacket shall be
						constructed of stainless steel or other approved corrosion-resistant
						material.
2-1.10.1.3 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 5-3.