Each compressed gas cylinder must--
(a) Be stored in a ventilated area;
(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.