R 408.11234 Fuel gas manifolding.

Rule 1234. (1) Fuel gas connected to 1 manifold inside a building shall have a total gas capacity of not more than 3,000 cubic feet (85 cubic meters approximately) or 11.8 cubic feet (.33 cubic meters) of liquefied gas, which is 735 pounds (333 kilograms) water capacity. More than 1 manifold unit may be located in a room, but the manifolds shall be not less than 50 feet (16 meters) apart or be separated by a noncombustible barrier not less than 5 feet (1.6 meters) high having a fire-resistance rating of 1/2 hour. (2) Fuel gas capacity on 1 manifold of more than 3,000 cubic feet (85 cubic meters approximately) or 11.8 cubic feet (.33 cubic meters) of liquefied gas, which is 735 pounds (333 kilograms) water capacity, is permissible in a separate room or compartment, as specified in R 408.11222(8), or located outside the building. (3) The pressure in the gas cylinders connected to, and discharged simultaneously through, a common manifold shall be approximately equal. (4) Manifolds shall be approved either separately for each component part or as an assembled unit. Editor's Note: An obvious error in R 408.11234 was corrected at the request of the promulgating agency, pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256. The rule containing the error was published in Annual Administrative Code Supplement, 2013. The memorandum requesting the correction was published in Michigan Register, 2014 MR 13. MANIFOLDING--SERVICE PIPING