Section III. PRINCIPLES OF OPERATION
Functional Description of Supplemental Petroleum Laboratory Support Systems........................................... 1-12
Functional Description of Supplemental Petroleum Laboratory Unique Equipment........................................ 1-13
1-12. FUNCTIONAL DESCRIPTION OF SUPPLEMENTAL PETROLEUM LABORATORY SUPPORT
The following paragraphs describe the systems designed to support the Supplemental Petroleum Laboratory. For details of
major equipment, refer to the appropriate equipment manual.
Electrical System (Refer to Figure 1-5 and FO-1). The Supplemental Petroleum Laboratory has an input power
requirement of 208V, 60Hz, 3-phase power. Power is supplied by an external generator via a 50-foot (15
meter), 5-wire cable. Power enters the Laboratory through connector J1 located in the POWER INPUT
PANEL. From connector J1 power is applied to Main Circuit Breaker A1CB1 in MAIN POWER PANEL A1
after a 5-minute time delay for a purge cycle. When the purge cycle is completed, A1CB1 may be closed. The
panel will now supply 110V, 60Hz, single-phase power to the laboratory compartment normal and emergency
lighting, convenience outlets, and various equipment located in the laboratory compartment. It also supplies
208V, 60Hz, 3-phase power to POWER PANEL NO. 2 through A1CB2. POWER PANEL NO.2 is located in
the mechanical room and supplies 110V, 60Hz, single-phase power for lighting, convenience outlets and
various equipment located in the mechanical room. POWER PANEL NO.2 also supplies 208V, 60Hz, 3-phase
power to the four environmental control units and to the air compressor located in the mechanical room.
If B Lab is operated with the A Lab as part of the MBPL, power is
connected to the Power Distribution Module, where it is distributed to the A
and B Labs.
Circuit breakers in MAIN POWER PANEL A1 are coded Al and circuit
breakers in POWER PANEL NO. 2 are coded A15.
MAIN POWER PANEL A1 houses 21 circuit breakers. This includes 225A Main Circuit Breaker A1CB1.
A1CB2 is a 100-amp circuit breaker that supplies POWER PANEL NO. 2. There are 12 15-amp, five 20-
amp, and one 30-amp circuit breaker that supply power for compartment lighting, convenience outlets and
other equipment in the compartment. Also located in MAIN POWER PANEL are the following items:
Fuses A1F1, A1F2, and A1F3. These are 25-amp fuses used to protect the ECU blowers during the
Fuse A1F4. This 5-amp fuse supplies power to the gas alarm control unit.
Relay A1K1. This relay is used to turn on the control devices for the purge system. It also prevents
the Main Circuit Breaker A1CB1 from being closed until the purge cycle is completed.
POWER PANEL NO. 2. This panel is located in the mechanical room. It receives an input of 208V, 60Hz,
3-phase power from MAIN POWER PANEL A1 via circuit breaker A1CB2. POWER PANEL NO. 2
houses 12 circuit breakers. There are six 20-amp circuit breakers, one of which supplies 110V, 60Hz,
single-phase power to the water chiller and four which supply 208V, 60Hz, 3-phase power to the four
environmental control units via control relays located in Purge Control Distribution Box A13. The other
20-amp circuit breaker supplies 208V, 60Hz, 3-phase power to the air compressor.