silo 3 - U.S. Department of Energy

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Process Control Pian for the Silo 3 Project
Document No. 40430-PL-0003. Rev. 1
Jacobs Project Number 35H19605
September 5, 2003 _.
5069' _-
The Excavator is an electrically powered machine. Operator control and machine status ' 0
monitoring are by radio-frequency (RF)-based remote control. An umbilical system is
provided in case of failure of the RF system. Since umbilical controls are local to the
Excavator, operators must enter either the Excavator Room or the silo to use this system.
A remote control operator box allows the Excavator to be controlled from an observation
room adjacent to the Excavator Room. This operator station is capable of initiating and
performing all machine surface travel and silo material removal functions. An excavator
emergency stop is also provided.
The silo material is raked, carried, or pushed out of the silo to the Retrieval Bin (HBN-11-
5054). The Retrieval Bin Discharge Feeder (FDR-11-5106) is speed-controlled to feed the
material onto the Inclined Conveyor (DFC-11-5056). Material loading of the Inclined
Conveyor is monitored through the Motor Current Transmitter (IT-DFC-11-5056). Material
in the Inclined Conveyor is transported to the Transfer Cgnveyor (FDR-11-5100), which
then deposits the material onto the Feed Conveyor (FDR-10-5102). This conveyor (FDR-
10-5102) has two outlets, one leading to Package Loading Stand A and the other leading
to Package Loading Stand B. These conveyors are started at the main operator panel by I
the packaging operators. Each conveyor is interlocked with the upstream conveyor(s).
CCTV cameras are provided in the silo interior, on the Excavator, and near the Retrieval I
- - - - - - -
- --Birr to atlow the Excavator aperator to view the silomaterial and-the ExzwaTo-r ape-ration: - - - - - -
3.4 MRS INTERLOCKS
A detailed listing of interlocks for the MRS is provided in the P&IDs and Table 3-2.
3.5 MRS SETPOINTS
A detailed listing of setpoints for the MRS is provided in Table 3-3.
3.6 MRS DATA ARCHIVING
The following MRS parameters are archived:
run time for all motorized equipment,
alarm events, and
0 interlock events.
3-3