Restoring Confidence in Nuclear Power Plant
Operations
ON AUGUST 29, 2002, the Nuclear & Industrial Safety Agency
(NISA) of the Ministry of Economy, Trade and Industry (METI) and
the Tokyo Electric Power Company (TEPCO) announced that some cracks
and other indications of cracks in core internals such as shrouds
might not have been made public and repair records might have
been falsified at TEPCO’s power plants between the late
1980s and 1990s. This was during the period when General Electric
International Inc. (GEII) subcontracted inspection and maintenance
works.
NISA also announced that the equipment currently in use does
not present serious or imminent safety concerns.
On September 17, TEPCO acknowledged that such inappropriate activities
had occurred for many years under the voluntary inspection procedures
carried out by the utilities. TEPCO admitted that management was
responsible for failing to detect these problems and that the
executives themselves should be held accountable. The current
TEPCO president, three former presidents and the executive general
manager of the Nuclear Power Division resigned their posts.
TEPCO released background information regarding these maintenance
work issues as well as preventive measures to eliminate further
occurrences. These preventive measures include improved transparency
and disclosure of public information; conducting appropriate business
activities by checking all in-company regulations and manuals;
and carrying out more stringent internal audits by setting up
quality auditing departments in each nuclear power plant and at
corporate headquarters. TEPCO also established a Corporate Ethics
Committee to ensure that all employees comply with the company’s
ethics code.
The electric industry is a business with close regional links,
and consumer confidence is regarded as the industry’s most
important resource. The problem now faced by TEPCO is also a serious
issue for the entire Japanese electric industry. These revelations
may not only impair consumer confidence in nuclear energy, but
also jeopardize the existing trust between the industry and its
customers, which forms the very basis of the electric industry.
The Federation of Electric Power Companies, which comprises ten
Japanese utilities, has established a “Panel for Restoring
Confidence.” This panel consists of the presidents of the
ten utilities and three companies: the Japan Atomic Power Company
(JAPC), Japan Nuclear Fuel Limited (JNFL), and the Electric Power
Development Co. (EPDC). Through this coalition the entire industry
is working together to restore public confidence.
Regarding the falsification of voluntary inspection records,
NISA instructed TEPCO, along with fifteen other electric utilities
and nuclear-related companies and organizations, to conduct a
thorough examination of their implementation and supervision systems
of voluntary inspections, so as to ensure similar problems have
not occurred. Nuclear operators submitted an interim report on
November 15 and a final report is due by the end of March 2003.
TEPCO also announced on October 25 that improper acts had taken
place in relation to leak rate inspections conducted on the containment
vessel during periodic inspections carried out at Fukushima Daiichi
Nuclear Power Station Unit-1 in 1991 and 1992. As a result NISA
took administrative measures directing TEPCO to shut down the
unit for one year.
Japanese utilities are undertaking a thorough examination of
all procedures as the industry unites in its efforts to restore
public confidence as quickly as possible.
Unchanged Commitment to Nuclear Fuel Recycling
In an attempt to strengthen support for the MOX program (the
use of MOX fuel—uranium and plutonium extracted through
the reprocessing of spent fuel—in light water reactors),
the industry will actively work to regain public confidence in
nuclear operators and thereby restore general confidence in nuclear
power. TEPCO realizes that it is unacceptable from the standpoint
of local communities to begin MOX loading at this time until public
confidence is restored. However, TEPCO remains committed to MOX
and nuclear fuel recycling.
Japanese utilities emphasize that it is essential to employ the
nuclear fuel cycle through the implementation of the MOX program
in order to ensure a stable, long-term supply of power and energy
independence in Japan, which suffers from a scarcity of energy
resources.
JNFL reprocessing plant, under construction
Japan’s power companies should proceed steadily with the
implementation of the MOX program, including the reprocessing
of spent fuel, from a long-term perspective, while making efforts
to re-establish credibility. Industry will also continue to stress
that Japan is firmly committed to the international nuclear non-proliferation
regime and to the peaceful use of nuclear energy. |