Diablo Canyon: PG&E secretly used wrong design data for key safety equipment for 30 years

Press release from Friends of the Earth

Utility misled California PUC, seeks to pocket $133.5 million in ratepayer revenues

SAN FRANCISCO – Pacific Gas & Electric Co. used incorrect earthquake and accident data when building crucial safety equipment for the Diablo Canyon nuclear power plant, according to information released by Senator Barbara Boxer. Friends of the Earth said the revelation suggests that PG&E has acted with gross negligence and that the twin-reactor plant on California’s Central Coast should be immediately shut down pending a public investigation.

Correspondence from the U.S. Nuclear Regulatory Commission — released by Sen. Boxer in a recent hearing and reported Sunday on Page 1 of the San Francisco Chronicle (PDF) — shows that since Diablo Canyon’s first reactor came online in 1984, PG&E failed to use updated seismic and loss-of-coolant-accident data, known as LOCA loads, for replacement equipment. Failure of such equipment in an earthquake could lead to a catastrophic release of radiation. PG&E should have used new data after a previously unknown fault, the Hosgri, was discovered during initial construction, but violated its federal operating license by failing to use the updated data in conjunction with loss of cooling accident data in designing and constructing replacement steam generators and reactor vessel heads for the reactors.

In 2011, PG&E notified the NRC of its decades-long negligence, but incredibly, the NRC failed to cite PG&E for any infraction. Instead NRC and PG&E worked together to secretly and illegally alter the plant’s operating license in September 2013. Friends of the Earth has a case pending in the U.S. Court of Appeals asking that the illegal license revision be thrown out and that Diablo Canyon be shut pending public review to determine whether or not the reactors can withstand the forces of newly identified earthquake faults that surround the plant.

Instead of addressing its malfeasance, PG&E launched an internal effort to try to show that despite using the wrong design data, the equipment it had installed was OK. PG&E has asked the California Public Utilities Commission for $133.5 million from ratepayers for what it calls a “Licensing Basis Verification Program.” The utility did not explain that they were asking to bill their customers for a paper exercise to cover up its negligence in the faulty design of well over $1 billion worth of equipment, also paid by customers.

Since the Hosgri Fault was discovered, new research has revealed that at least four faults surrounding Diablo Canyon are capable of causing earthquakes more powerful than the reactors were designed to withstand The plant’s former NRC senior resident inspector, Dr. Michael Peck, warned last year that the increased risks from earthquakes meant that the plant was operating outside of its license and should be shut pending review — a warning that came before the revelations about PG&E’s use of outdated safety data.

“This shows gross negligence by PG&E and a shameful lack of oversight by federal regulators,” said Damon Moglen, senior strategic advisor to Friends of the Earth. “It’s terrifying to think that for 30 years PG&E used the wrong numbers for vital equipment at the U.S. reactors most at risk from earthquakes.”

“No one would dream of putting nuclear reactors in that location today,” Mogen said. “Diablo Canyon should never have been constructed in the first place, and now it is clear it should not be allowed to operate another day. Diablo Canyon must be shut down now, and there should be both state and federal investigations into PG&E’s negligence.”

Dave Freeman, former head of the federal Tennessee Valley Authority, the Los Angeles Department of Water and Power and the Sacramento Municipal Utility District, said PG&E’s negligence fits the utility’s pattern of cutting corners on safety, which led to the fatal gas pipeline explosion in San Bruno in 2010.

“There they go again,” said Freeman, now senior energy advisor to Friends of the Earth. “Just as with San Bruno, PG&E has again put profits before safety, has misused ratepayers’ money and misled state regulators at the PUC.”

Expert Contact: Damon Moglen, (202) 352-4223, dmoglen@foe.org

Communications Contacts: Bill Walker, (510) 759-9911, bw.deadline@gmail.com (West Coast)  Adam Russell, (202) 222-0722, arussell@foe.org (East Coast)

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http://www.foe.org/news/news-releases/2015-03-diablo-pge-secretly-used-wrong-data-for-safety-equipment#sthash.8DQl1ReI.dpuf

San Francisco Chronicle article:
http://www.sfgate.com/business/article/PG-E-overlooked-key-seismic-test-at-Diablo-Canyon-6
121386.php

US Nuclear Regulatory Commission expert says Diablo Canyon nuclear power plant should be shut down

In an internal report that was released August 25, NRC senior federal nuclear expert Michael Peck called for Pacific Gas and Electric’s Diablo Canyon NPP to be shut down pending a safety review. At issue is the recently discovered Shoreline Fault. However, the other three faults, including the Hosgri Fault, reportedly responsible for a devastating earthquake in Santa Barbara in the 1900’s, are also issues.

Here is a petition by Friends of the Earth to shut down Diablo Canyon:
http://action.foe.org/p/dia/action3/common/public/?action_KEY=16332

Last year, the Union of Concerned Scientists released a report on Diablo Canyon. They found the NRC was not holding Diablo Canyon to the same earthquake safety standards as other nuclear power plants.

This is a dangerous double standard,” said David Lochbaum, director of UCS’s Nuclear Safety Project and author of the report. “At other facilities, the NRC enforced its safety regulations and protected Americans from earthquake threats. Today, in the case of Diablo Canyon, the NRC is ignoring its regulations, unfairly exposing millions of Americans to undue risk.”

When similar concerns surfaced at nuclear facilities in California, Maine, New York, Pennsylvania and Virginia, the NRC did not allow the plants to continue to operate until the agency determined they met safety regulations…In contrast, the NRC has allowed PG&E to continue to operate Diablo Canyon’s reactors despite this known threat.
http://www.ucsusa.org/news/press_release/diablo-canyon-report-0381.html
NRC Fails to Apply Standard Earthquake Protection Protocols to Diablo Canyon Nuclear Plant, Report Finds

Peck first raised his concerns in September 2010 when he filed non-concurrence papers and later elevated them to differing professional opinion, the highest level of official dissent within the agency. His report said that pipes and other important plant equipment at the plant may not be able to withstand the maximum shaking that could be generated by the Shoreline fault, which runs 2,000 feet offshore of the plant.

“We find it completely disgraceful that the NRC hid these concerns for all these years,” said Jane Swanson, spokeswoman for the antinuclear group San Luis Obispo Mothers for Peace.

Peck recommended that Diablo Canyon be shut down until it can be proved that the plant could withstand a quake along the Shoreline fault, a process that could require an amendment to the plant’s current operating license.
http://www.sanluisobispo.com/2014/08/25/3211883_report-diablo-canyon-closure-nrc.html?rh=1
Report calling for Diablo Canyon’s closure raises concerns locally, August 25, 2014

According to Peck’s filing, PG&E research in 2011 determined that any of three nearby faults – the Shoreline, Los Osos and San Luis Bay – is capable of producing significantly more ground motion during an earthquake than was accounted for in the design of important plant equipment. In the case of San Luis Bay, it is as much as 75 percent more.
http://www.ktvu.com/news/news/ap-exclusive-expert-calls-diablo-canyon-shutdown/ng8Tj/
AP Exclusive: Expert calls for Diablo Canyon shutdown, Aug. 25, 2014

On August 26, Friends of the Earth filed a formal petition with the NRC:

Friends of the Earth — an advocacy group critical of the nuclear power industry — filed a petition with the Nuclear Regulatory Commission asking for a hearing and charging the Diablo Canyon plant is violating its operating license.

… The group argues the reactors located between Los Angeles and San Francisco should remain closed until a rigorous safety review is completed and PG&E amends its federal license.
http://www.sanluisobispo.com/2014/08/26/3213001/group-files-petition-to-idle-california.html#storylink=relast
Group files petition to idle Diablo Canyon nuclear plant, August 26,, 2014

Here is the AP exclusive on the Diablo Canyon report, and other news articles.

http://www.ktvu.com/news/news/ap-exclusive-expert-calls-diablo-canyon-shutdown/ng8Tj/
AP Exclusive: Expert calls for Diablo Canyon shutdown, Aug. 25, 2014

http://www.sanluisobispo.com/2014/08/25/3211883_report-diablo-canyon-closure-nrc.html?rh=1
Report calling for Diablo Canyon’s closure raises concerns locally, August 25, 2014

http://www.sanluisobispo.com/2014/08/26/3213001/group-files-petition-to-idle-california.html#storylink=relast
Group files petition to idle Diablo Canyon nuclear plant, August 26,, 2014

http://www.ucsusa.org/news/press_release/diablo-canyon-report-0381.html
NRC Fails to Apply Standard Earthquake Protection Protocols to Diablo Canyon Nuclear Plant, Report Finds, November 13, 2013