StacksVerified U.S. regulatory reference

46 CFR §56.50-110

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)In addition to the requirements of this part, piping for diving installations which is permanently installed on the vessel must meet the requirements of subpart B of part 197 of this chapter.
  2. (b)Piping for diving installations not permanently installed on the vessel need not meet the requirements of this part, but must meet the requirements of subpart B of part 197 of this chapter.
  3. (c)Piping internal to a pressure vessel for human occupancy (PVHO) need not meet the requirements of this part, but must meet the requirements of subpart B of part 197 of this chapter.