[Code of Federal Regulations]
[Title 33, Volume 2]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 33CFR154.820]

[Page 317-318]
 
                TITLE 33--NAVIGATION AND NAVIGABLE WATERS
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 154--FACILITIES TRANSFERRING OIL OR HAZARDOUS MATERIAL IN BULK--Table 
of Contents
 
                    Subpart E--Vapor Control Systems
 
Sec. 154.820  Fire, explosion, and detonation protection.

    (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 Sec. 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 Sec. 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:

[[Page 318]]

    (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 Sec. 
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 Sec. 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 Sec. 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 Sec. 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.