33 C.F.R. § 154.820 Fire, explosion, and detonation protection.
Title 33 - Navigation and Navigable Waters
(a) A vapor control system with a single facility vapor connection that receives vapor only from a vessel with inerted cargo tanks and processes vapor with a vapor recovery unit must: (1) Be capable of inerting the vapor collection line in accordance with §154.824(a) of this subpart prior to receiving vapors from the vessel; (2) Have at least one oxygen analyzer that samples the vapor concentration continuously at a point not more than 6 meters (19.7 ft.) from the facility vapor connection; and (3) Meet §154.824 (f)(1), (f)(2), (g), (h)(2), and (h)(3) of this subpart. (b) A vapor control system with a single facility vapor connection that receives vapor only from a vessel with inerted cargo tanks and processes vapor with a vapor destruction unit must: (1) Have a detonation arrester located not more than 6 meters (19.7 ft.) from the facility vapor connection; or (2) Have an inerting system that meets the requirements of §154.824 of this subpart. (c) A vapor control system with a single facility vapor connection that receives vapor from a vessel with cargo tanks that are not inerted and processes vapor with a vapor recovery unit must: (1) Have a detonation arrester located not more than 6 meters (19.7 ft.) from the facility vapor connection; or (2) Have an inerting, enriching, or diluting system that meets the requirements of §154.824 of this subpart. (d) A vapor control system with a single facility vapor connection that receives vapor from a vessel with cargo tanks that are not inerted and processes the vapor with a vapor destruction unit must: (1) Have a detonation arrester located not more than 6 meters (19.7 ft.) from the facility vapor connection; and (2) Have an inerting, enriching, or diluting system that meets the requirements of §154.824 of this subpart. (e) A vapor control system with multiple facility vapor connections that processes vapor with a vapor recovery unit must have a detonation arrester located not more than 6 meters (19.7 ft.) from each facility vapor connection. (f) A vapor control system with multiple facility vapor connections that processes vapor with a vapor destruction unit must: (1) Have a detonation arrester located not more than 6 meters (19.7 ft.) from each facility vapor connection; and (2) Have an inerting, enriching, or diluting system that meets the requirements of §154.824 of this subpart. (g) A vapor control system that uses a vapor balancing system in which cargo vapor from a vessel is transferred through the facility vapor collection system to facility storage tanks must: (1) Have a detonation arrester located not more than 6 meters (19.7 ft.) from each facility vapor connection; (2) Have a detonation arrester located within the storage tank containment area as close as practical to the vapor return connection of each facility storage tank; and (3) Have facility storage tank high level alarm systems and facility storage tank overfill control systems arranged to prevent cargo from entering the vapor return line. (h) Except for a discharge vent from a vapor destruction unit, each outlet of a vapor control system that vents to atmosphere and is not isolated with a pressure-vacuum relief valve must have a flame arrester located at the outlet.
Title 33: Navigation and Navigable Waters
PART 154—FACILITIES TRANSFERRING OIL OR HAZARDOUS MATERIAL IN BULK
Subpart E—Vapor Control Systems
§ 154.820 Fire, explosion, and detonation protection.
