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. 29.7033 - General requirements

Universal Citation: MI Admin Code R. 29.7033

Current through Vol. 24-16, September 15, 2024

Rule 33. Sections 3-1.1, and 3-1.4 are reproduced from NFPA 50A, and sections 3-1.2, 3-1.3, and 3-1.5 to 3-1.10 of the storage and handling of gaseous and Liquefied H2 code are added as follows:

3-1 General requirements.

3-1.1 The system shall be located so that it is accessible to delivery equipment and to authorized personnel. Roadways or other means of access for emergency equipment, such as fire department apparatus, shall be provided.

3-1.2 Above ground systems shall be located either at grade or above grade.

3-1.3 Aboveground systems shall not be located beneath or where exposed to failure of the following:

(a) Electric power lines as follows:

(i) Not less than 50 feet (15.24 meters) horizontally from the vertical plane below the nearest overhead wire of an electric trolley, train, or bus line.

(ii) Not less than 5 feet (1.52 meters) horizontally from the vertical plane below the nearest overhead electrical wire.

(b) Piping containing all classes of flammable or combustible liquids, see definition in Section 1-5.

3-1.4 Systems within 50 feet (15.24 meters) of aboveground storage of all classes of flammable and combustible liquids shall be located on ground higher than such storage, except where dikes, diversion curbs, grading, or separating solid walls are used to prevent accumulation of these liquids under the system.

3-1.5 Underground systems shall be located underground, mounded, or partially buried and outside of any buildings. Buildings shall not be constructed over any underground, mounded, or partially buried container. Sides of adjacent containers shall be separated by not less than 3 feet (1 meter) unless approved by the department.

(a) Excavation for underground, mounded, or partially buried containers shall be made with due care to avoid damage to an existing structure or its foundation. Containers shall not be installed where loads from adjacent structures may be transmitted to the container. A structure or foundation of a structure on the same property shall not be erected or constructed within 10 feet (3.1 meters) of any point on the container surface, unless the footings extend to the bottom of the container. A container shall not be installed less than 10 feet (3.1 meters) from the nearest wall of any basement, pit, or property line.

3-1.6 All underground containers shall be set on firm foundation and surrounded with 6 inches (15.24 centimeters) minimum of noncorrosive inert material such as clean sand or pea gravel.

3-1.7 Underground or mounded containers shall be covered with not less than 2 feet (0.6 meter) of earth or with not less than 1 foot (30.48 centimeters) of earth on top of which shall be placed a reinforced concrete slab not less than 4 inches (10.16 centimeters) thick. If containers are likely to be subjected to traffic, they shall be protected against damage from vehicles passing over them by at least 3 feet (1 meter) of earth cover plus 6 inches (15.24 centimeters) of reinforced concrete. When reinforced concrete paving is used as part of the protection, it shall extend at least 1 foot (30.48 centimeters) horizontally beyond the outline of the container in all directions 3-1.8 Containers installed in an area subject to flooding, high water table, or other buoyant forces shall be safeguarded from movement by anchoring or other means acceptable to the department based on the best interests of public health, safety, and welfare and the environment.

3-1.9 Aboveground gaseous H2 systems shall be fenced and posted to prevent entrance by unauthorized personnel.

Exception: Gaseous H2 dispensers may be located outside the fence.

3-1.10 Underground installations shall be deemed to provide engineered protection from overhead power lines.

Disclaimer: These regulations may not be the most recent version. Michigan may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.

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