Download The Safety of the Bataan Nuclear Plant with focused on Seismic Safety

The First Kashiwazaki International Symposium on
Seismic Safety of Nuclear Installations
Sponsored by
Japan Nuclear Energy Safety Organization (JNES)
in cooperation with the
International Atomic Energy Agency (IAEA)
By:
Victor M. Delgado Jr
National Power Corporation
Philippines
Background
 Bataan Nuclear Power Plant is a nuclear power plant,
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completed but never fueled – 620 MW
Located 100 kilometers (60 miles) west of Manila, on a 3.57
square kilometer government reservation at Napot Point in
Morong, Bataan
The plant is only 9 kilometers away from a dormant
volcano called Mt. Natib.
Mt. Natib stands between the Philippine Fault and the
West Luzon Fault.
It was the Philippines' only attempt at building a nuclear
power plant.
Construction on the Bataan Nuclear Power Plant began in
1977 and almost completed in 1984.
Background
 Following the 1979 Three Mile Island accident in the
US, construction on the BNPP was stopped to check
the safety of the plant.
 In 1986 the nuclear power plant project was scrapped
by the new government.
 Reasons:
 The Chernobyl accident of 1986
 Located in an area where earthquakes are likely to occur.
Focused of the Presentation
IS THE BATAAN NUCLEAR POWER
PLANT SAFE IN TERMS OF SEISMIC
ACTIVITY
CAN IT WITHSTAND A TSUNAMI
CAUSED BY EARTHQUAKE OF
TECTONIC ORIGINS
The BNPP Safety Inquiry
 In 1979, upon the government instruction, a
Commission was formed to review the safety of BNPP.
 Among others, the focused of the inquiry is centered
on seismic safety and its associated hazards.
 The inquiry attracted resource persons & consultants
of renowned qualification
Site Location of BNPP
 The BNPP is located at Napot Point, Morong west coast of
Bataan Province
 There were 2 volcanic centers in the area, Mt. Natib & Mt
Mariveles
 The location of the power plant was chosen among several
sites in Luzon Island, meaning the best location among
others.
 Point in question on the Site
 Is the occurrence of large earthquake of at least 7.2
magnitude withstand the design of the plant?
 In case of volcanic eruption & tsunami due to earthquake,
what will be its effect?
The Philippine Fault Zone
The Philippine Nuclear
Power Plant Site
Results of the Investigation
 ON THE EARTHQUAKE ISSUE
 There are no convincing evidence that BNPP is located on an
active fault.
 Occurrence of earthquake (7.8 magnitude) is most unlikely
event at plant site
 Earthquake of (7.8 magnitude) may originate from known
active faults surrounding the Central Luzon Tectonic
Province – Philippine Fault, Taal Fracture Zone & Manila
Trench
 Earthquake that may originate at nearest earthquake zone as
well as postulated earthquake of magnitude 7 was duly
considered in arriving at the acceleration value of 0.4g.
Results of the Investigation
 ON THE EARTHQUAKE ISSUE
 There is a reasonable assurance that the largest postulated
earthquake that can be felt at the plant site would not result
in leakage or spillage that will result contamination
 Since the 1900 only one earthquake had been recorder to
have its epicenter in Bataan Peninsula with a magnitude of 4
& 4.4
Results of the Investigation
 ON THE TSUNAMI ISSUE
 The plant is located at the elevation 18 meters above sea level
 The known tsunami that hit the country had the maximum
height of 7 meters
 The plant would be safe from tsunami resulting from an
earthquake of tectonic origin
Conclusion
 The Commission finds that there is a reasonable assurance
that any occurrence of earthquake will not cause leakage or
spillage resulting nuclear contamination.
 The seismic design of 0.4g has taken into account the
strongest earthquake that may be felt at the plant site.
 An eruption of Mt. Natib is within the realm of probability
but is considered remote – dormant in the last 70,00 years.
 Should it erupt the only likely hazard it could cause to the
plant site would be ashfall.
 The plant site appears to be safe from the effects of tsunami
as it was located 18 masl., as compared to the known
tsunami recorded in the Philippines – 7 meters.
The 1990 Luzon Earthquake
 The 1990 Luzon earthquake occurred on July 16, 1990, at
4:26 PM local time.
 The densely populated island of Luzon was struck by an
earthquake with a 7.8 magnitude
 The earthquake produced a 125 km-long ground rupture
 The earthquake epicenter was around 150 kms from
the Bataan Nuclear Plant
The 1991 Mount Pinatubo
Eruption
 In June 1991, Mount Pinatubo erupted, considered as
the second largest volcanic eruption of the twentieth
century.
 The volcano is about 52 kms away from the Bataan
Nuclear Plant
 The 1991 Mount Pinatubo eruption began in July 1990,
when a magnitude 7.8 earthquake occurred 100
kilometers (62 miles) northeast of the Pinatubo region,
determined to be a result of the reawakening of Mount
Pinatubo.
The Status of the Philippine
Nuclear Power Plant
The 2008 IAEA Mission Review
Key Findings
1. Infrastructure of Nuclear Power
• No Apparent Nuclear Energy Policy
• The joint mechanism among the government, utilities and the
industry is not established.
• Legislative and regulatory framework is incomplete/needs
updating.
-International Instruments
-Licensing Basis
• Declining expertise to implement nuclear energy plan and lack
of systematic human resources development plan.
2. The Bataan Nuclear Power Plant
• Verification data of plant conditions needed for rehabilitation
is not available.
• Primary Island: the detailed preservation program was
reduced since 1997 due to budget limitation.
• Conventional Island: maintained minimum preservation to
keep the functions for the selected components.
The 2008 IAEA Mission Review
Key Findings
2. The Bataan Nuclear Power Plant (cont..)
• Verification data of plant conditions needed for rehabilitation
is not available.
• Primary Island: the detailed preservation program was
reduced since 1997 due to budget limitation.
• Conventional Island: maintained minimum preservation to
keep the functions for the selected components.
• Some components were sold/moved.
• No project management organization to preserve the plant.
• No provisions to control environmental conditions for
components/documents.
• All documents including test results are maintained but under
uncontrolled environment.
• Relationship with the OEM was terminated.
• Components in the warehouses were not maintained
and preserved properly.
The 2008 IAEA Mission Review
Key Findings
2. The Bataan Nuclear Power Plant (cont..)
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No systematic evaluation system for the feasibility study
of rehabilitation.
Nuclear power Infrastructure degradation due to mothballing
of the first NPP.
High uncertainty of functionality of components because mothballing
was done when the plant is almost complete and the reduction of
preservation level in 1997.
The cost of rehabilitation may be more because of no preservation
of the Nuclear Steam Supply System.
The 2008 IAEA Mission Review
Recommendations
1. Infrastructure of Nuclear Power
• Set the National Nuclear Energy Policy
• Utilize IAEA’s “Milestones in the Development of a National
Infrastructure for Nuclear Power” document to assess
Infrastructure preparedness and progress.
• Consider technical cooperation between IAEA and Philippines
focused on BNPP and holistic Infrastructure Building.
2. The Bataan Nuclear Power Plant
• Establish a dedicated core group with nuclear experience and
expertise, for management of preservation and all necessary
activities in BNPP.
• Produce a BNPP Status Verification Report (SVR) on actual
status of the plant.
The 2008 IAEA Mission Review
Recommendations
2. The Bataan Nuclear Power Plant (cont..)
• Establish a reactor licensing capability in the regulatory body and
update Licensing Bases Document (LBD).
• Utility to determine the scope of technology update, considering –
- Nuclear experience in similar NPPs (Krsko, Kori, Angra); and
- What System, Structure and Components (SCC) need to be replaced
in SVR.
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Survey of the available resources (consultants, suppliers).
Update the Environmental Impact Assessment Report for the
government review and public consultation to reduce uncertainty.
Preparation of the Feasibility Study for the rehabilitation of BNPP.
Recommendations of Philippine
Counterparts
• Setting-up of Steering Committee on Nuclear
Power
-DOE Secretary as Chairman
-Policies and Directions
• Setting-up of Project Management Office
-Headed by a Project Director
-Implementing arm of Committee
-Reports Directly to DOE Secretary
…Thank you for your attention