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 §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.