[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: 33CFR154.812]

[Page 315-316]
 
                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. 154.812  Facility requirements for vessel liquid overfill protection.

    (a) Each facility which receives cargo vapor from a tank barge which 
is fitted with overfill protection in accordance with 46 CFR 39.20-9(a) 
as its only means of overfill protection must provide a 120 volt, 20 amp 
explosion proof receptacle which meets:
    (1) ANSI/NEMA WD6;
    (2) NFPA 70, Articles 410-57 and 501-12; and
    (3) 46 CFR 111.105-9.
    (b) Each facility that receives cargo vapor from a tank barge fitted 
with an intrinsically safe cargo tank level sensor system complying with 
46 CFR 39.20-9(b) as its only means of overfill protection must have an 
overfill control panel on the dock capable of powering and receiving an 
alarm and shutdown signal from the cargo tank level sensor system that:

[[Page 316]]

    (1) Closes the remotely operated cargo vapor shutoff valve required 
by Sec. 154.810(a) of this subpart and activates the emergency shutdown 
system required by Sec. 154.550 of this part when:
    (i) A tank overfill signal is received from the barge, or
    (ii) Electrical continuity of the cargo tank level sensor system is 
lost;
    (2) Activates an alarm which is audible and visible to barge 
personnel and facility personnel when a tank overfill signal, or an 
optional high level signal corresponding to a liquid level lower than 
the tank overfill sensor setting, is received from the barge;
    (3) Has a means to electrically and mechanically test the alarms and 
automatic shutdown systems prior to transferring cargo to or ballasting 
the tank barge;
    (4) Has suitable means, such as approved intrinsic safety barriers 
able to accept passive devices, to ensure that the overfill and optional 
alarm circuits on the barge side of the overfill control panel, 
including cabling, normally closed switches, and pin and sleeve 
connectors, are intrinsically safe;
    (5) Is labeled with the maximum allowable inductance and capacitance 
to be connected to the panel, as specified by the equipment 
manufacturer; and
    (6) Has a female connecting plug for the tank barge level sensor 
system with a 5 wire, 16 amp connector body meeting IEC 309-1/309-2 
which is:
    (i) Configured with pins S2 and R1 for the tank overfill sensor 
circuit, pin G connected to the cabling shield, and pins N and T3 
reserved for an optional high level alarm connection;
    (ii) Labeled ``Connector for Barge Overflow Control System''; and
    (iii) Connected to the overfill control panel by a shielded flexible 
cable.