[Code of Federal Regulations] [Title 46, Volume 7] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR197.338] [Page 429-430] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 197--GENERAL PROVISIONS--Table of Contents Subpart B--Commercial Diving Operations Sec. 197.338 Compressed gas cylinders. Each compressed gas cylinder must-- (a) Be stored in a ventilated area; [[Page 430]] (b) Be protected from excessive heat; (c) Be prevented from falling; (d) Be tested after any repair, modification, or alteration to the pressure boundaries as set forth in Sec. 197.462; and (e) Meet the requirements of-- (1) Part 54 of this chapter; or (2) 49 CFR 173.34 and 49 CFR part 178, subpart C.