![]() |
Code of Federal Regulations (Last Updated: May 6, 2024) |
![]() |
Title 46 - Shipping |
![]() |
Chapter I - Coast Guard, Department of Homeland Security |
![]() |
SubChapter O - Certain Bulk Dangerous Cargoes |
![]() |
Part 154 - Safety Standards for Self-Propelled Vessels Carrying Bulk Liquefied Gases |
![]() |
Subpart C - Design, Construction and Equipment |
![]() |
Cargo and Process Piping Systems |
§ 154.528 - Piping joints: Flange type.
Latest version.
-
§ 154.528 Piping joints: Flange type.
(a) A flange must be one of the following types:
(1) Welding neck.
(2) Slip-on.
(3) Socket weld.
(b) If the piping is designed for a temperature between −10 °C (14 °F) and −55 °C (−67 °F), the pipe flange may be a:
(1) Slip-on type, if the nominal pipe size is 100 mm (4 in.) or less;
(2) Socket weld, if the nominal pipe size is 50 mm (2 in.) or less; or
(3) Welding neck.
(c) If the piping is designed for a temperature lower than −55 °C (−67 °F), the pipe flange must be a welding neck type.