(a) The manway cover must be an approved design.
(b) If no valves or measuring and sampling devices are mounted on manway cover, no protective housing is required. [29 FR 18995, Dec. 29, 1964. Redesignated at 32 FR 5606, Apr. 5, 1967, and amended by Amdt. 179-50, 60 FR 49077, Sept. 21, 1995]