Environmental Engineering Reference
In-Depth Information
The IPC composition includes: built-in systems
module with processor, PCI/Ethernet local main
bus adapter, installed in the systems unit; built-in
video monitor; built-in symbolic keyboard.
The upper level equipment includes: operator
station MMI 201, which is included in the worksta-
tion (WS) of the turbine control engineer (TCE);
operator station MMI 202, which is part of the
unit shift supervisor (USS) workstation; opera-
tor station MMI 203, which is part of the reactor
control engineer (RCE) workstation; engineer
station (server EWS/SS 200), which is part of
the shift of I&C supervisor (SICS) workstation
in the CIS room; archiving station/documentation
server HSR/LS 161, which are included as part of
the shift I&C supervisor workstation; computer
servers CS 181, CS182, which are part of the shift
I&C supervisor workstation.
Equipment of the upper level also includes
single-color laser printers Laser Ptr that can be
hooked up directly to the main bus and are installed
in the CIS room and main control room. They are
used to print reports in the form of text and graphs
and color HP 1200C (Color Ptr) ink-jet printers
for outputting screen copies to the printer, and
also Genicom printers, which are hooked up to
the HSR/LS 161 server.
Low level stations - sub-complexes for gath-
ering and processing data - are implemented on
the base of DPU (distributed processing unit)
collection devices serially produced by Westing-
house Corporation. The DPU is a two-channel
(redundant) microprocessor system, each channel
of which contains: microprocessor; mathemati-
cal co-processor; specialized logic co-processor;
sentry timer; electrically erasable programmable
storage unit (flash memory); on-line memory
device; Westnet II local network controller (with
outputs for connection to both Westnet II main
buses); RS-232 sequential port for connecting
to the servicing portable computer; internal bus
Multibus I; internal (local) memory expansion bus;
one or two external input-output bus controllers;
secondary power supply.
One, two or three individual DPU are located
in a floor cabinet. Input/output modules are placed
in the same DPU cabinet (up to 36 modules)
and/or in expansion cabinets (up to 48 modules
in each one) and are connected to DIOB buses.
Direct current power of the modules comes from
two secondary sources (main and backup), which
are installed in the DPU cabinets and then the
expansion cabinets.
In addition to the input/output modules of the
analogue and digital signals “Westron” developed
and manufactured special modules (programmable
logic controllers) for inputting data into the DPU
along digital channels from other I&C systems
of the unit.
The DPU gathers information, converts input
signals to unified digital format, primary analysis
(inspection of output of parameters beyond limits
of maximum values, analysis of emergencies, gen-
eration of warning and emergency messages) and
issues dated to the Westnet II network. Technical
diagnosis, automatic restart, possibility of configu-
ration, inspection and change of DPU settings in
autonomous mode and in the operating process
(along the Westnet II man bus) are also provided.
The lower level equipment includes: stations
for distributed collection and processing of sig-
nals from the DPU1-DPU4 sensors together with
cabinets of the galvanic signal insulating devices
(1E insulators); the stations DPU5 without a
cabinet for such devices; the servers DLS 171,
DLS 172, and DLS 173 for communications with
the Westnet bus of associated systems along the
digital channels.
Associated systems with such connections
include: the “Kompleks-Titan” computer informa-
tion system (connection with high level complexes
SM-2M1, SM-2M2 and low level input/output
complexes KSO1-KSO3, KSO5, KSO6); in-core
reactor monitoring systems (communications with
IRMS1 and IRMS2); the hydrogen monitoring
system (HMS).
The DPU centers receive signals from sensors:
safety systems - DPU2, DPU3, DPU4; normal
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