Minn. R. 4675.1200
MEDICAL GASES AND FLAMMABLE LIQUIDS
Storage and distribution systems for anesthetic gases and oxygen shall be in compliance with NFPA Standard No. 56A, 1973 edition, and NFPA Standard No. 56F, 1973 edition. Storage or installations for flammable liquids shall comply with NFPA Standard No. 30, 1973 edition.