Page 22 - Nuclear Plant Journal - March April 2013
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Peach
Bottom’s
12.4% EPU
By Michael Massaro, Exelon Generation.
Michael Massaro
Massaro is responsible for the
safe and efficient operation of the
facility, including coordination and
management of
personnel, overall
station performance
and financial
plan oversight.
His guidance and
leadership help to
ensure the safe and
efficient operation
of the plant as the
Peach Bottom team
works together to
generate electricity
for our customers.
Massaro most recently held the position
of Site Vice President at the Oyster
Creek Generating Station in Forked
River, New Jersey.
Massaro earned a bachelor’s degree
in mechanical design engineering
technology in 1979 from Pennsylvania
State University and holds a
Professional Engineer’s license in the
State of Pennsylvania. He has also held
a Senior Reactor Operator license at
Hope Creek Generating Station.
Response to questions by Newal
Agnihotri, Editor of Nuclear Plant
Journal.
1.
What is the percentage target for
the planned Extended Power Operate
(EPU)?
The percentage target is 12.4% (3514
MWT to 3951 MWT).
2.
Provide an overview of proposed
EPU.
Peach Bottom Atomic Power Station
is planning an Extended Power Uprate
(EPU) to 3951 MWt core power for both
units, which is 120% of Original Licensed
(core) Thermal Power. The project was
authorized for full implementation by
co-owners Exelon (NYSE: EXC) and
PSEG in July 2012
and implementation
of
modifications
required for the
EPU are planned
over the next three
refueling outages as
well as during online
periods.
To support the
increase in output
at EPU conditions
and to improve the
material condition
at the plant, certain
plant
modifications
are required, including steam dryer re-
placements; high pressure service water
and residual heat removal system piping
changes, feedwater heater replacements;
generator rerate and rotor upgrade; hp
turbine upgrades; condensate pump and
motor upgrades; feedwater pump turbine
rotor and casing upgrades, isophase bus
duct partial replacement; and additional
condensate filter demineralizers.
The Peach Bottom Atomic Power
Station is a two unit BoilingWater Reactor
(BWR) plant with a Nuclear Steam
Supply System (NSSS) provided by
General Electric (GE). The units entered
commercial operation in July 1974 (Unit
2) and December 1974 (Unit 3) with an
Original Licensed (core) Thermal Power
(OLTP) of 3293 MWt. In 2002, the
station pursued a 1.62% Measurement
Uncertainty Recapture Power Uprate to a
core thermal power of 3514 MWt.
3.
Are there any fuel upgrades being
undertaken as part of the EPU?
No, fuel is not part of the EPU project
scope.
4.
Describe
the
instrumentation
modification being undertaken as part of
this EPU?
The Peach Bottom Extended Power
Uprate (EPU) will require an increase
in certain plant parameters, causing a
number of instruments to experience
process conditions beyond their current
calibrated range. As a consequence,
re-scaling and replacement of affected
instrumentation is necessary to allow
correct indication when operating at EPU
conditions.
5.
What will be the increase in the
electrical output of the station due to the
EPU?
130 MWe average per unit.
6.
Will the increased electrical
output need any upgrade of the turbine,
generator, transformers, and isolated
phase bus?
Turbine Retrofit.
22
Nuclear Plant Journal, March-April 2013
