[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
NRC indicates will OK restart of Texas nuclear plant
Index:
NRC indicates will OK restart of Texas nuclear plant
Texas Genco puts South Texas nuke repair at $4 mln
AEP to replace vessel lids at Mich. nuclear plant
France's Chirac Defends Polynesia Nukes
Boeing-Led Team to Study Nuclear-Powered Space Systems
U.S. House OKs ban on aid to build KEDO nuke reactors
Unearthed data say Hiroshima bomb dropped later
===================================
NRC indicates will OK restart of Texas nuclear plant
BAY CITY, Texas, , July 28 (Reuters) - Officials from the U.S.
Nuclear Regulatory Commission indicated on Monday they were satisfied
with repairs to the huge South Texas nuclear power plant and would
give the go ahead by Friday to restart operations.
The NRC officials told a public hearing on the 1,250-Megawatt South
Texas 1 unit that tiny cracks found in instrumentation tubes beneath
the reactor had been properly repaired and posed no threat to safety.
"I think you can tell from our presentation that we are very
satisfied with the actions you've taken," Dwight Chamberlain, acting
deputy regional administrator for the NRC told plant officials at the
meeting about 80 miles (128 km) southwest of Houston.
He said the NRC would issue a letter on Friday with its official
verdict on the plant's condition.
The unit has been shut since late March when inspections during
refueling turned up boric acid deposits on the instrumentation tubes,
which go into the reactor and provide readings on its performance.
The plant, which also includes a second nuclear unit and provides
enough power for more than a million homes, is operated by STP
Nuclear Operating Co. for a consortium of owners who include
CenterPoint Energy's <CNP.N> Texas Genco Holdings Inc. <TGN.N> (30.8
percent), Austin Energy of the city of Austin (16 percent), AEP's
<AEP.N> AEP Texas Central Co. (25.2 percent) and City Public Service
of San Antonio (28 percent).
Plant officials had said they expected the unit to restart later this
summer and had no comment on the possible approval to restart on
Friday or how long before it could be running again.
But, STP president Joe Sheppard said he was confident the problems
had been solved and the unit was ready to go.
"We believe we are ready to return Unit 1 to service in a safe and
reliable manner," he said.
The cause of the cracks has not been identified, but STP believes
they were the result of stresses on the instrumentation tubes when
the reactor core was constructed.
Senior NRC reactor analyst Russell Bywater told the 70 or so people
at the public hearing "the repair was acceptable no matter what
caused the cracks."
The South Texas plant is one of 69 pressurized water reactors active
in the United States. A total of 103 nuclear units are in operation
across the country, providing about 20 percent of the U.S. power
supply.
-----------------------
Texas Genco puts South Texas nuke repair at $4 mln
NEW YORK, July 29 (Reuters) - Texas Genco Holdings Inc. <TGN.N> said
Tuesday that repairs on the 1,250 megawatt South Texas 1 nuclear
unit, expected to return to service later in the summer, will cost
the company $4 million.
The unit, near Bay City, Texas, has been out of service since late
March, when routine refueling turned up tiny boric acid deposits on
the bottom of the reactor vessel.
The $4 million is lower than early estimates of $5 million to $6
million.
During a conference call with investors and reporters, Texas Genco
President and CEO David Tees said repairs at the plant were complete
and STP Nuclear Operating Co., which runs the plant for a consortium
of owners, has refueled the unit in preparation to restart it.
"The plant is in the final stages of returning and we anticipate its
return later this summer," Tees said.
The plant will need to be refueled next in 2005, Tees added.
Officials from the U.S. Nuclear Regulatory Commission met with STP
officials on Monday near the plant and indicated they were satisfied
with repairs and would by Friday give their official go ahead to
restart operations.
The NRC said tubes beneath the reactor had been properly repaired and
posed no threat to safety.
The NRC is expected to issue a letter on Friday with its official
verdict on the plant's condition.
The plant includes a second 1,250 MW unit and provides enough power
for more than a million homes.
Owners of the plant include CenterPoint Energy Inc.'s <CNP.N> Texas
Genco (30.8 percent), Austin Energy of the city of Austin (16
percent), AEP's <AEP.N> AEP Texas Central Co. (25.2 percent) and City
Public Service of San Antonio (28 percent).
The South Texas plant contains two of 69 pressurized water reactors
active in the United States. A total of 103 nuclear units are in
operation across the country, providing about 20 percent of the U.S.
power supply.
-------------------
AEP to replace vessel lids at Mich. nuclear plant
SAN FRANCISCO, July 28 (Reuters) - Energy company American Electric
Power Co. <AEP.N> said on Tuesday it will replace the reactor vessel
heads at its big twin-unit Cook nuclear power station in Michigan in
2006 and 2007.
Columbus, Ohio-based AEP said in a statement that French nuclear
reactor maker Framatome ANP will fabricate the two vessel heads for
the $44 million project.
The Cook plant, in Bridgman Michigan, is one of the largest power
stations in the Midwest, with more than 2,000 megawatts of generating
capacity -- power for about 2 million homes.
The Cook Unit 1 vessel head will be replaced during a refueling
outage in autumn 2006 and Cook Unit 2's head during the autumn 2007
refueling.
AEP noted that the Nuclear Regulatory Commission's requirements for
reactor vessel head inspections have increased due to concerns over
potential cracking and corrosion.
The company said the replacement heads would be made of an alloy more
resistant to cracking.
The NRC has stepped up inspection rules for operators of pressurized
water reactors following problems at an Ohio nuclear station operated
by FirstEnergy Corp. <FE.N>.
FirstEnergy's Davis-Besse nuclear plant has been shut for 17 months
for repairs following the discovery that a slow acid leak had eaten a
hole in the reactor vessel head.
"Although we don't have current vessel head problems at Cook,
replacement is the right long-term solution and demonstrates AEP's
commitment to extended operation," said Chris Bakken, AEP's senior
vice president for nuclear generation.
Previously, AEP said it was considering replacement of the Cook
vessel heads, and in May the company said it was repairing small
cracks on the Cook 2 head.
-------------------
France's Chirac Defends Polynesia Nukes
PAPEETE, Tahiti (AP) - French President Jacques Chirac, making his
first visit to Polynesia since ordering a final round of nuclear
tests in the South Pacific in 1995, on Saturday defended the decades
of testing that some islanders claimed gave them cancer.
Chirac, making a five-day visit to the French territory of Tahiti,
said the atomic tests that generated international outrage helped
establish France as a world power.
``Without Polynesia, France would not be the great power that it is,
capable of expressing in the concert of nations an autonomous,
independent and respected position,'' he said.
Dancers wearing traditional garb and beating drums greeted the
president the day before at the airport in Papeete, the capital, with
cries of ``Chirac, Chirac,'' in a welcome ceremony organized by his
close ally and friend, Tahiti Gov. Gaston Flosse.
But behind the orchestrated show of public support, an association of
hundreds of former nuclear test site workers urged the French
government to recognize its claim that the nuclear tests made them
sick.
France detonated at least 123 nuclear weapons in the volcanic rock
beneath Mururoa Atoll, about 750 miles southeast of Tahiti, between
1975 and 1996. The French exploded another eight under nearby
Fangataufa Atoll.
Chirac broke a three-year international moratorium on nuclear testing
shortly after coming to power in 1995, sparking a global uproar. The
testing was stopped a year later.
But workers vowed to stage demonstrations during Chirac's four-day
visit to the Pacific region to force the government to ``recognize
the health consequences of the military nuclear tests.''
The Association for the Veterans of Nuclear Tests has asked France to
fund studies about the effects of radiation exposure and pay for
doctor's visits for workers and their families.
But in a local newspaper interview published Friday, Chirac squarely
denied the tests had sickened workers and said surveys of radiation
exposure were unnecessary.
``There are no health consequences, either in the short-term or long-
term,'' he told daily ``les Nouvellles de Tahiti.'' He said experts
had concluded that detailed radiation surveys were not needed, though
the government would keep checking radiation levels.
A researcher for the Association for the Veterans of Nuclear Tests
estimated last year that former workers at the sites had a 34 percent
risk of developing cancer over their lifetime - twice the rate seen
in France's overall population.
The association has said it wants the government to fund studies
about the effects of radiation exposure, pay for doctor's visits for
workers and their families and recognize the link between their
exposure to radiation and cancer.
In 1998, a report by the International Atomic Energy Agency said
France's tests in the South Pacific had left ``extremely modest
radiation levels'' and posed no threats to people. It also predicted
that there would be no change in cancer incidence.
The last series of tests at Mururoa and Fangataufa, about 750 miles
southeast of Tahiti, broke a three-year international moratorium on
nuclear testing. The tests sparked criticism of Chirac in many
Pacific nations.
Between 30,000 and 40,000 military personnel worked at least
temporarily at the nuclear sites during the 30-year span of tests,
Marcus said.
--------------------
Boeing-Led Team to Study Nuclear-Powered Space Systems
CHICAGO, July 29 /PRNewswire-FirstCall/ -- NASA's Jet Propulsion
Laboratory (JPL) has awarded a contract to a Boeing-led (NYSE:BA)
team to study deep space propulsion systems for the Jupiter Icy Moons
Orbiter (JIMO) mission, scheduled to launch no earlier than 2011.
JIMO would be the first space science mission in NASA's Project
Prometheus, a part of the space agency's initiative to develop space
nuclear power and electric propulsion technologies to revolutionize
space exploration.
The contract, valued at $6 million with a $5 million option for
further research, is one of three awarded and runs through fall 2003.
The Boeing-led team will study technology options for the reactor,
power conversion, electric propulsion and other subsystems of the
JIMO spacecraft meant to explore the Jovian moons Ganymede, Callisto
and Europa. NASA plans to select an industry prime contractor in
fall 2004 to work with JPL to develop, launch and operate the
spacecraft.
JIMO would show nuclear reactors can be operated safely and reliably
in space to provide electrical power needed for propulsion and
scientific exploration. The JIMO reactor would provide more than 100
times more usable onboard power than has been available to previous
science probes. This opens new possibilities for exploration,
including more flexible flight schedules less dependent on planetary
positions and longer loiter times around multiple destinations on the
same mission.
Nuclear-powered spacecraft would allow for the collection and return
of an enormous amount of imagery and scientific data and could
support scientific instruments such as ice-penetrating radar,
electromagnetically launched deep penetrators and laser
spectroscopes.
"JIMO will be an ambitious project and Boeing is ready to develop new
ways to travel and explore the solar system," said Joe Mills, Boeing
vice president and program manager for JIMO. "I'm excited about the
exploration of Jupiter's icy moons and unlocking their secrets."
Boeing Phantom Works, the company's advanced R&D unit, took a best-of-
industry approach to build its JIMO team, which includes the
company's NASA Systems, Boeing Satellite Systems, Boeing Electronic
Dynamic Devices Inc. and Rocketdyne Propulsion and Power. Among the
companies teamed with Boeing are BWX Technologies Inc., and Ball
Aerospace & Technologies Corp.
BWX Technologies Inc., a division of McDermott Inc., will evaluate
reactor options for the JIMO spacecraft. For the past five decades,
BWXT has supplied nuclear components to the Navy with an
unprecedented operational and safety record. Ball Aerospace &
Technologies Corp. brings its deep space experience from the
Discovery and Mars Exploration Programs to the team. In addition,
Ball has a long heritage of providing scientific instruments to NASA.
Boeing brings large-scale systems and payload integration experience
from a wide range of military and commercial aircraft, spacecraft and
satellite programs, including some of NASA's most complex systems,
such as the International Space Station. Boeing also offers
experience in space electric propulsion from NASA's Deep Space 1
probe and the 702 series satellites.
In another part of the NASA Prometheus program, Boeing is also
currently working on a next generation radioisotope power source
under a recently- awarded U.S. Department of Energy contract. This
generator is designed for use both in space and on the surface of
planetary bodies such as Mars.
Scientists believe Jupiter's icy moons have briny oceans beneath
their crusts. These oceans are high-priority destinations for NASA's
strategic mission to understand life in the universe because they
could have the key ingredients for supporting microbial life. These
ingredients are liquid water, chemical nutrients and sources of
energy. JIMO's mission -- orbiting and intensively studying multiple
moons -- could not be accomplished with conventional propulsion.
--------------------
U.S. House OKs ban on aid to build KEDO nuke reactors
WASHINGTON, July 29 (Kyodo) - The U.S. House of Representatives has
unanimously passed an amendment to the Energy Department's fiscal
2004 budget appropriation bill to suspend all aid for building two
nuclear reactors in North Korea under an international project,
congressional sources said Monday.
A similar amendment is expected to be added to a related bill in the
Senate under the lead of Republican lawmakers, the sources said.
The Senate is likely to pass it in September, which will terminate
U.S. support for the construction under the New York-based Korean
Peninsula Energy Development Organization (KEDO).
Amid the acceleration of North Korea's nuclear weapons development,
if multilateral talks with Pyongyang do not bring significant
progress toward resolving the issue, the construction project for the
two light-water nuclear reactors will likely be suspended even before
the new fiscal year starts in October.
One of the sources said the probability of the project being stopped
as early as in August is high. The KEDO executive board, comprising
Japan, South Korea, the United States and the European Union, is
expected to decide on the final plan with the project during an
official meeting as early as next month.
The board will try to coordinate opinions in an informal meeting
Tuesday and Wednesday, the source said.
The amendment prohibits budgetary spending for exports such as
nuclear-related materials and components for the nuclear reactors, as
well as the transfer of related technologies and information to the
project.
The U.S. government has approved more than 3,000 cases of
technological information provision to KEDO, but they will all become
illegal under the amendment. The U.S. will fully disengage from the
construction project as it also bans giving support through third
countries.
KEDO is an international consortium in charge of implementing a 1994
U.S.-North Korean agreement that requires Pyongyang to freeze and
eventually dismantle its weapons-grade nuclear facilities in exchange
for the construction of two light-water reactors and an interim
supply of fuel oil.
In December, KEDO stopped fuel-oil shipments to North Korea after the
crisis over North Korea's nuclear ambitions emerged last October,
when the U.S. said Pyongyang had admitted to running a secret program
to enrich uranium for nuclear arms.
-------------------
Unearthed data say Hiroshima bomb dropped later
HIROSHIMA, July 29 (Kyodo) - The atomic bomb dropped on Hiroshima by
the United States in August 1945 may have exploded about two minutes
later than commonly thought, according to data found Tuesday at a
former weather station in the city.
An atmospheric pressure graph recorded at the station about 3.6
kilometers south-southwest of the hypocenter shows a bomb blast at
8:18 a.m. on Aug. 6, 1945, contradicting records from the U.S. bomber
Enola Gay that the atomic bomb was dropped at 8:15 a.m. and exploded
about 43 seconds later.
If the graph is accurate, it would mean the bomb was dropped at about
8:17 a.m.
''Meteorological data at that time were military secrets and time was
recorded strictly based on Japan Standard Time,'' Fumitaka
Wakabayashi, head of the Hiroshima City Ebayama Museum of
Meteorology, told Kyodo News.
''Equipment error, if any, would have been within one minute and I
believe (the data) recorded the explosion time quite accurately,'' he
added.
On the graph recorded at the Ebayama weather station, the line for
atmospheric pressure stops about three minutes after 8:15 a.m.,
possibly due to the explosion's effect on the equipment. Pointing to
the end of the line are pencil markings saying ''bomb blast'' and
''8h18m6,'' or 8:18 a.m.
The discovery follows a similar one made in Nagasaki three years ago
in which data at the Nagasaki marine observatory showed the other
atomic bomb dropped on Japan by the U.S. detonated there at 10:52 or
10:45 a.m. on Aug. 9, 1945, instead of the common belief of 11:02
a.m.
Kazuhiko Takano, deputy head of the Hiroshima Peace Memorial Museum,
cautioned, ''Issues such as the weather station's geographical
conditions, the path and amount of time taken for the blast to reach
it must also be considered. The data contradict Enola Gay records,
but I believe they would be difficult to verify.''
Reports and witness accounts in Japan indicate explosion times
ranging from 8:10 a.m. to 8:20 a.m.
U.S. documentation also fails to agree on the exact timing of the
Hiroshima bomb, which created a holocaust and destroyed the city.
Aviation records from the Enola Gay indicate the bomb was dropped 30
seconds after 8:15 a.m., while some crew members recalled 17 seconds.
A U.S. investigative team reported in 1947 that the atomic bomb
exploded at about 8:17 a.m.
The bomb dropped on Hiroshima created a massive fireball that brought
temperatures at the hypocenter to an estimated 3,000-4,000 C.
Approximately 140,000 people had died by the end of December 1945 as
a result of the bomb and many others suffered radiation illnesses.
-------------------------------------------------
Sandy Perle
Director, Technical
ICN Worldwide Dosimetry Service
ICN Plaza, 3300 Hyland Avenue
Costa Mesa, CA 92626
Tel:(714) 545-0100 / (800) 548-5100 Extension 2306
Fax:(714) 668-3149
E-Mail: sandyfl@earthlink.net
E-Mail: sperle@icnpharm.com
Personal Website: http://sandy-travels.com/
ICN Worldwide Dosimetry Website: http://www.dosimetry.com/
************************************************************************
You are currently subscribed to the Radsafe mailing list. To unsubscribe,
send an e-mail to Majordomo@list.vanderbilt.edu Put the text "unsubscribe
radsafe" (no quote marks) in the body of the e-mail, with no subject line.
You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/