[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: 33CFR154.810]

[Page 314-315]
 
                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. 154.810  Vapor line connections.

    (a) A remotely operated cargo vapor shutoff valve must be installed 
in the vapor collection line between the facility vapor connection and 
the nearest point where any inerting, enriching, or diluting gas is 
introduced into the vapor collection line or where a detonation arrester 
is fitted. The valve must:
    (1) Close within thirty (30) seconds after detection of a shutdown 
condition

[[Page 315]]

by a component required by this subpart;
    (2) Close automatically if the control signal is lost;
    (3) Activate an alarm when a signal to shut down is received;
    (4) Be capable of manual operation or manual activation;
    (5) Have a local valve position indicator or be designed so that the 
valve position can be readily determined from the valve handle or valve 
stem position; and
    (6) If the valve seat is fitted with resilient material, not allow 
appreciable leakage when the resilient material is damaged or destroyed.
    (b) Except when a vapor collection arm is used, the last 1.0 meter 
(3.3 feet) of vapor piping before the facility vapor connection must be:
    (1) Painted red/yellow/red with:
    (i) The red bands 0.1 meter (0.33 feet) wide, and
    (ii) The middle yellow band 0.8 meter (2.64 feet) wide; and
    (2) Labeled ``VAPOR'' in black letters at least 50 millimeters (2 
inches) high.
    (c) Each facility vapor connection flange must have a permanently 
attached 0.5 inch diameter stud at least 1.0 inch long projecting 
outward from the flange face. The stud must be located at the top of the 
flange, midway between bolt holes, and in line with the bolt hole 
pattern.
    (d) Each hose used for transferring vapors must:
    (1) Have a design burst pressure of at least 25 psig;
    (2) Have a maximum allowable working pressure of at least 5 psig;
    (3) Be capable of withstanding at least 2.0 psi vacuum without 
collapsing or constricting;
    (4) Be electrically continuous with a maximum resistance of ten 
thousand (10,000) ohms;
    (5) Have flanges with:
    (i) A bolt hole arrangement complying with the requirements for 150 
pound class ANSI B16.5 flanges, and
    (ii) One or more 0.625 inch diameter holes in the flange located 
midway between bolt holes and in line with the bolt hole pattern;
    (6) Be abrasion resistant and resistant to kinking; and
    (7) Have the last 1.0 meter (3.3 feet) of each end of the vapor hose 
marked in accordance with paragraph (b) of this section.
    (e) Vapor hose handling equipment must be provided with hose saddles 
which provide adequate support to prevent kinking or collapse of hoses.
    (f) Fixed vapor collection arms must:
    (1) Meet the requirements of paragraphs (d)(1) through (d)(5) of 
this section;
    (2) Have the last 1.0 meter (3.3 feet) of the arm marked in 
accordance with paragraph (b) of this section.
    (g) The facility vapor connection must be electrically insulated 
from the vessel vapor connection in accordance with section 6.10 of the 
OCIMF International Safety Guide for Oil Tankers and Terminals.
    (h) A vapor collection system fitted with an enriching system that 
operates at a positive gauge pressure at the facility vapor connection 
must be fitted with:
    (1) A manual isolation valve between each facility vapor connection 
and the remotely operated cargo vapor shutoff valve required by 
paragraph (a) of this section; and
    (2) A means to prevent backflow of enriched vapor to the vessel's 
vapor collection system.