ABWR Procedure Based Automation NEI Presentation Jerold S. Marks, GE Hitachi Nuclear Energy

ABWR Procedure Based
Automation
NEI Presentation
Jerold S. Marks, GE Hitachi Nuclear Energy
Electronic Procedures
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Controlled Electronic Repository contains
electronic copies (PDF) of approved procedures.
User can easily navigate to specific procedures
and within the procedures.
User can also print procedure attachments
Hyperlink from alarm system to specific
associated page in Annunciator Response
Procedure
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Automation
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ABWR provides for automation of the Integrated Operating
Procedures (IOPs) for plant startup, shutdown and power
maneuvers.
Automation limited to well known plant and system states
and expected evolutions – terminates automation upon
deviation
System based on automation system at K-6/K-7, lessons
learned from operator feedback on FOAKE program and
additional HSI design considerations.
Supervisory automation system, Power Generation Control
System [PGCS], sends requests to perform a specific task to
a system Programmable Logic Controller [PLC].
The operator is prompted to perform safety controls.
Automation monitors those manual steps for completion.
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Automation: System PLC
The System PLC:
a) Grants permissive for system to be in “PGCS”
(automation) mode.
b) Performs the task (such as, start an additional
feedwater pump)
c) Operates in compliance with system logic
including all interlocks and setpoints
d) Sends success or failure flag to PGCS
Failure of any task reverts automation to manual
mode.
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Automation: PGCS system
The PGCS system
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Monitors overall plant condition for continued automation
or transfers to manual mode
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Monitors conditions unique to the specific group of tasks
(“breakpoints”) for conditions that will transfers to manual
mode
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Contains built in pauses as well as operator initiated
pauses or operator “transfer to manual mode”
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Contains optional single-step mode of operation requiring
operator confirmation after each task.
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Shadow mode allows shift supervisor to observe
progress
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Overall Philosophy
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The operator remains in control at all times
Operator has all information needed on display (live
parameters) and progress of individual steps that are being
performed by the system PLC
System screens available at nearby VDUs
Keep operator involved – just because a step can be
automated does not mean it should.
IOP with automation contains additional manual instructions for
(optional) surveillances and additional operator guidance not
performed by PGCS (example: notify load dispatcher, check
reactor chemistry, etc.)
Upon transition to manual, operator is in the same IOP step in
the IOP without automation
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Video
Video example of PGCS presented at
Washington, DC ANS Conference 2007
Note: Operator interface is touch screen.
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