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 7 - Liquefied hydrogen dispensing systems › Section R. 29.7121 - General system requirements

Current through Vol. 24-12, July 15, 2024
Rule 121. Sections 7-2 to 7-2.15 of the storage and
						handling of gaseous and Liquefied H2 code are added as
						follows:
7-2 General system requirements.
7-2.1 All fuel dispensing facilities shall meet the
						provisions of this chapter.
7-2.2 Compression, processing, generation, storage, and
						dispensing equipment shall be protected to prevent damage from vehicles and
						minimize the possibilities of physical damage and vandalism and meet the
						requirements of section 2-1.5 and section 3-4.4.
7-2.2.1 Access to liquefied H2
						storage, compression, and processing equipment by members of the public shall
						be restricted by a suitable secure area.
7-2.3 Control devices shall be installed so that internal
						or external icing does not cause vehicle or fueling station malfunction.
7-2.4 Vehicles shall not be considered a source of
						ignition with respect to the provisions of this chapter.
Exception: Vehicles containing fuel-fired equipment, such
						as recreational vehicles and catering trucks, shall be considered a source of
						ignition unless this equipment is shut off completely before entering an area
						in which ignition sources are not permitted.
7-2.5 The fueling connection shall prevent the escape of
						H2 where the connector is not properly engaged or
						becomes separated.
7-2.6 Fueling nozzles for H2
						service shall be in accordance with section 2-14.1.
7-2.7 Compression and processing equipment shall be
						designed for use with H2 and for maximum pressures and
						temperatures to which it can be subjected under normal operating
						conditions.
7-2.8 Compression and processing equipment shall have
						pressure relief devices that limit each stage pressure to the maximum allowable
						working pressure for the compression cylinder and piping associated with that
						stage of compression and meets the requirements of chapter 2.
7-2.9 H2 compression equipment
						shall be equipped with appropriate automatic shutdown controls.
7-2.10 Control circuits that shut down, shall remain down
						until manually activated or reset by qualified personnel.
7-2.11 A hazard analysis shall be conducted on every
						H2 fueling system installation by a qualified
						engineer(s) with proven expertise in H2 fueling systems
						and installations.
7-2.11.1 The hazard analysis shall include the following:
						fire protection measures, fire protection and suppression systems, detection
						systems, and ventilation.
7-2.11.2 At a minimum, the hazard analysis shall include
						consideration of potential failures in hoses, nozzles, dispensing equipment, as
						well as failures for maintenance and service.
7-2.11.3 Method used for hazard analysis shall be 1 or
						combination of several of the following recognized procedures: hazard and
						operability studies (HAZOPs), failure mode effects and criticality analysis
						(FMECA), preliminary hazards analysis (PHA), fault tree analysis (FTA) and
						event tree analysis (ETA). Other analysis methods, when used, shall ensure same
						level of system safety as provided by any of the recognized procedures or
						acceptable to the department based on the best interest of public health,
						safety, and welfare, and the environment.
7-2.11.4 Standard designs that have been analyzed by
						recognized procedure need not be studied each and every time such installation
						occurs. Site-specific elements that are unique to the installation shall be
						reviewed in concert with the analysis performed on the standard system to
						ensure that the standard design has not been altered in a way that would
						negatively affect the hazard analysis.
7-2.11.5 These hazard analyses shall be available for
						review at final inspection, prior to the installation being placed into
						service, shall be maintained on site, and be available to the department upon
						request.
7-2.12 Dispensing systems shall be equipped with overfill
						protection.
7-2.13 Warning signs shall be conspicuously posted in the
						dispensing area and shall incorporate the following or equivalent wording:
						"Stop Motor, No Smoking, Non-Odorized Flammable Gas, Cryogenic Liquid or Cold
						Gas. Remain in attendance outside of the vehicle and in view of the nozzle. No
						filling of portable containers in or on a motor vehicle."
7-2.14 Each outdoor H2-dispensing
						device shall be located not less than 10 feet (3.1 meters) from property lines,
						openings to buildings, and buildings of combustible wall construction. A
						dispensing device shall not be less than 20 feet (6.1 meters) from any activity
						that involves a fixed source of ignition. In addition,a dispenser shall not be
						placed beneath a power line.
7-2.15 Each container filling location that is open to
						the public shall have an attendant or supervisor on duty who meets the
						requirements of section 1-8 of the rules.