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NuclearPlantJournal.com Nuclear Plant Journal, July-August 2015
design. This spring, Entergy installed
test assemblies for the latest GNF fuel
design, GNF3, in the River Bend plant.
Based on evolutionary design changes
and advanced technology developed by
GNF, the GNF3 fuel assembly design will
provide customers with improved fuel
economics, increased performance and
flexibility in operation while maintaining
the superior reliability of GNF2, the most
reliable design in GNF’s history.
Fuel for the Entergy plants will be
fabricated by GNF at its state-of-the-art
facility in Wilmington, N.C.
Contact: Jon Allen, Global Nuclear
Fuel, telephone: (910) 819-2581, email:
.
Full Scope Simulator
L-3 MAPPS
announced that it has
received a contract from Nucleoeléctrica
Argentina S.A. (NA-SA) to upgrade the
Embalse full scope simulator. Work will
commence immediately and the upgraded
simulator is expected to return to service
in the third quarter of 2016.
Since the full scope simulator was
put into service in the first quarter of
2013, the Embalse plant has been through
numerous design changes in response to
NA-SA’s ongoing plant refurbishment.
The simulator upgrade is intended to
reflect these design changes, including
updates to the shutdown control systems,
introduction of larger emergency
diesel generators, improvements to the
emergency core cooling system, addition
of a new turbine control system, and a
power uprate involving several thermal-
hydraulic systems to increase the gross
capacity of the plant from 648 MWe to
683 MWe. The project will also see an
update to the Digital Control Computer
emulation provided by L-3 MAPPS.
The simulator’s main control room
panels will also be updated with numerous
modifications, including the addition of
simulated human-machine interfaces for
the ABB Symphony Harmony turbine
controls and ABB UNITROL 6800
Automatic Voltage Regulator (AVR)
control terminal.
The simulator’s instructor booth will
be enhanced to include L-3 MAPPS’
revamped audio-visual recording and
playback system, Orchid Multimedia
Manager. Orchid Multimedia Manager
will be used to record inputs from six
new high-zoom digital cameras and six
digital microphones to be added overhead
in the simulator main control room.
Orchid Multimedia Manager’s advanced
features and professional surveillance-
grade interface will make it easy to
monitor and follow Embalse trainees
during simulator training sessions. The
audio and video recordings, synchronized
with the simulator, will make debriefing
sessions much more informative and aid
instructors to explain what actions and
behaviors should be corrected.
Contact: Sean Bradley, L-3 MAPPS,
telephone: (514) 787-4953.
Safety Upgrade
Westinghouse Electric Company
was contracted by Arizona Public Service
to provide the first Mobius™ system,
a continuous mobile boration system
designed for use at the PaloVerde Nuclear
Generation Station. Work already is
underway on the project. Delivery of the
Mobius system to PaloVerde is scheduled
for late 2015.
The Mobius system provides a
continuous supply of highly borated
water at high flow rates. Westinghouse
developed this patented approach at
the request of international customers
in response to post-Fukushima safety
requirements. Working with Palo Verde,
the approach was customized to provide
plant-specific
operational
benefits,
including an automated control system
with touch screen operator interface.
At Palo Verde, the Mobius system
will be used at the start of outages to
borate the plant to refueling boron
concentrations much faster than current
methods, resulting in reduced outage
duration. The system then will be used as
part of the defense-in-depth outage risk
mitigation strategies.
The Westinghouse Mobius system
requires four main inputs: water, a power
source, boric acid powder and a pH
control agent powder. Both discharge
flow rate and concentration are controlled
using an automated platform.
Contact: Westinghouse Electric
Company, telephone: (412) 374-6379,
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telephone: (630) 364-4780
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