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Showing posts with label sce. Show all posts
Showing posts with label sce. Show all posts

Tuesday, 8 October 2013

SCE Demands Mitsubishi Allow Contractually Mandated Audit

Posted on 07:23 by Unknown
The following press release was received last evening from Southern California Edison.

----------

Media Contact: Media Relations, (626) 302-2255

SCE Demands that Mitsubishi Submit to Contractually Mandated Audit

Mitsubishi Has Refused Repeated Requests to Allow the Audit in the Months Since Its Failed Replacement Steam Generators Resulted in the Permanent Closure of San Onofre

ROSEMEAD, Calif., Oct. 7, 2013 — Southern California Edison (SCE) today announced that it has formally demanded that Mitsubishi Heavy Industries agree to undergo a contractually mandated audit of Mitsubishi's design and manufacture of Replacement Steam Generators (RSGs) for the San Onofre nuclear plant. On Sept. 20, the Nuclear Regulatory Commission (NRC) concluded that a flaw in Mitsubishi's computer model led to the failure of the Replacement Steam Generators. The NRC's investigation also uncovered internal Mitsubishi consultant materials that expressed concerns about Mitsubishi's computer model.

Edison's latest formal audit demand, set forth in a letter from SCE president Ron Litzinger, can be found at http://www.songscommunity.com/docs/093013_letter.pdf. The letter notes that SCE “officials and lawyers have made this [audit] request on at least three prior occasions, but Mitsubishi has steadfastly refused to date to submit to this audit.” Litzinger wrote that he was appealing once again “because Mitsubishi's repeated refusal to agree to such an audit is harmful to the public, regulators and our entire industry, as it hinders efforts to understand and learn from the RSGs’ failures.”

The SCE audit demand letter says that “[t]he contractual language requiring Mitsubishi to undergo this audit could not be clearer . . .: Section 1.9.6 of the contract gives [SCE] the right to ‘examine and copy’ Mitsubishi's ‘books, accounts, relevant correspondence, specifications, time cards, drawings, designs, and other documentation, to the extent that these are related and relevant to the Work under the Purchase Order[.]’”

In repeatedly refusing to submit to the audit, Mitsubishi has argued that this contractual language applies only to financial information necessary to support invoices. SCE’s demand letter characterizes Mitsubishi's excuse as “disappointing” and says that it “will only confirm the suspicion that Mitsubishi refuses to be transparent.”

Litzinger's letter concludes by saying that SCE “stands ready to begin the audit as soon as Mitsubishi advises that it will abide by the straightforward terms of the contract.”

In July, SCE filed a Notice of Dispute with Mitsubishi in an attempt to recover all damages caused by Mitsubishi’s failed design and manufacture of the San Onofre Replacement Steam Generators that led to the shutdown of the nuclear plant. SCE has also announced that it continues to reserve all of its rights as to any and all legal remedies available against Mitsubishi. Finally, SCE has made public key documents regarding the failure of the San Onofre Replacement Steam Generators in a Digital Document Library located at www.SONGScommunity.com/library, although the Digital Library remains incomplete because of Mitsubishi’s continued refusal to permit other key documents to be made public.

About Southern California Edison
An Edison International (NYSE:EIX) company, Southern California Edison is one of the nation’s largest electric utilities, serving a population of nearly 14 million via 4.9 million customer accounts in a 50,000-square-mile service area within Central, Coastal and Southern California. 

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10:24 AM Eastern 10/8/2012
ATOMIC POWER REVIEW
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Posted in mitsubishi, san onofre, sce, songs, steam generators | No comments

Sunday, 22 September 2013

NRC Finds Flaws in Mitsubishi RSG Design for San Onofre

Posted on 16:43 by Unknown
Those of us watching the San Onofre situation closely have been waiting for a good, solid hint, one way or the other as to which way the continuing situation between SCE and Mitsubishi would play out.  The matters covered in the release below may constitute a significant, if early, hint.

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(Press release from SCE, Sunday evening 9/22)

Media Contact: Media Relations, (626) 302-2255

SCE Announces that Nuclear Regulatory Commission Finds Flaws in Mitsubishi Heavy Industries’ Design that Led to Failed Steam Generators at San Onofre

ROSEMEAD, Calif., Sept. 22, 2013 — The Nuclear Regulatory Commission (NRC) has confirmed to Southern California Edison (SCE) that the NRC has identified flaws in how Mitsubishi Heavy Industries (MHI) used its computer codes to design the failed steam generators at the San Onofre Nuclear Generating Station (SONGS). The NRC further informed Southern California Edison that it is issuing a “Notice of Non-Conformance” against MHI for its flawed computer modeling in the failed design. The NRC is also citing SCE for failing to ensure that MHI’s modeling and analysis were adequate.

In particular, the NRC reports indicate that MHI’s use of its computer codes in the design of the steam generators inaccurately predicted thermal hydraulic conditions in the steam generators, leading to tube vibration and wear, and a steam generator tube leak. The NRC also found that MHI embedded the same computer modeling error in the design of steam generators at four other nuclear plants, although none developed the fluid elastic instability that caused San Onofre to shut down. The NRC inspection findings reinforce an NRC Augmented Inspection Team report a year ago that identified MHI’s computer modeling errors. The San Onofre units were permanently shut down in June.

Pete Dietrich, SCE senior vice president and chief nuclear officer, said it is not unusual for the NRC to cite the licensed operator of the nuclear plant as a responsible party even when problems are created by a vendor or contractor, and that SCE takes its licensee oversight responsibilities seriously. The NRC’s decision to also directly cite MHI reflects the fact that MHI created the flawed design and also failed to properly perform the verification and checking that SCE hired MHI to do.

“Mitsubishi designed the system. Mitsubishi built the system. Mitsubishi’s system failed. They are the experts. SCE was the customer,” Dietrich said.

“SCE is responsible for the safe operation of San Onofre and will continue to make safety our top priority as the plant is decommissioned,” Dietrich added. “MHI is accountable for its failure to provide properly functioning steam generators.”

Dietrich said SCE relied upon MHI, the qualified vendor authorized to design, manufacture and test the steam generators in accordance with American Society of Mechanical Engineers Code requirements, to meet specifications. Dietrich added that during the design of the steam generators, SCE appropriately questioned MHI about its design and use of computer models on multiple occasions. MHI repeatedly reassured SCE that its design and models were correct.

In its letter to SCE, the NRC also noted that MHI hired consultants with expertise in designing large steam generators, but that MHI did not rigorously evaluate their concerns about MHI’s computer modeling.

No financial penalties were imposed by the NRC.

On July 18, SCE served MHI with a Notice of Dispute http://www.songscommunity.com/docs/noticeofdispute.pdf for breach of contract and warranty for supplying defective steam generators that resulted in the permanent closure of San Onofre. The notice details MHI’s failures in designing the steam generators.

SCE announced June 7 that it would permanently shut down San Onofre Units 2 and 3, and begin the process to decommission the facility.

SCE has provided an online Digital Document Library containing thousands of pages of primary documents about the history of the design and testing of the Replacement Steam Generators, and a summary of design review minutes at http://www.songscommunity.com.

For more information about SCE, follow us on Twitter and on Facebook.

About Southern California Edison
An Edison International (NYSE:EIX) company, Southern California Edison is one of the nation’s largest electric utilities, serving a population of nearly 14 million via 4.9 million customer accounts in a 50,000-square-mile service area within Central, Coastal and Southern California.

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BACKGROUND LINKS  (for further information)

SCE:  Rates not impacted by San Onofre (APR Sept. 8)

SCE Releases San Onofre documents (APR Sept. 7)

MHI Document Release by NRC, and evisceration of the claims by Boxer / Markey that "SCE and MHI knew the steam generators were bad."  My analysis of just the MHI documents, an injection of reality, and proof that Boxer and Markey have no idea what they're talking about.  Also contains many further informative links on steam generator design and testing (these are past APR articles as well.)

7:45 PM Eastern 9/22/2013
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Posted in decommissioning, MHI, nrc, san onofre, sce, songs, steam generators | No comments

Wednesday, 24 July 2013

San Onofre Nuclear Generating Station Operating License to be Retired

Posted on 17:44 by Unknown
Press release courtesy Southern California Edison follows.

---------

Media Contact: Media Relations, (626) 302-2255


San Onofre Nuclear Plant Operating License to be Retired After Final Fuel Removal

ROSEMEAD, Calif., July 24, 2013 — The San Onofre nuclear plant has completed the final regulatory step required to formally retire its operating license.

Southern California Edison (SCE), majority owner of the nuclear plant, sent a letter to the Nuclear Regulatory Commission (NRC) on Tuesday certifying that fuel has been removed from the Unit 2 reactor. A similar letter for Unit 3 was submitted on June 28. Once the NRC certifies the Unit 2 defueling, the nuclear plant will have a “possession” license rather than an operating license, and will no longer be authorized to place fuel in the reactor vessel.

“While we have safely performed this kind of defueling work for four decades, the final removal of fuel from the Unit 2 reactor marks a significant milestone in San Onofre’s history,” said Pete Dietrich, SCE senior vice president and chief nuclear officer. “We are committed to remaining focused on public health and safety as we transition through decommissioning.”

The defueling of Unit 2 was completed on July 18. The 217 fuel assemblies were moved to the spent fuel pool where they will be stored and cooled until transferred to dry cask storage. The transfer was executed entirely under water by specialized equipment, as captured in this video.

SCE announced June 7 that it would retire San Onofre Units 2 and 3, and begin the process to decommission the facility. For more information about SCE, follow us on Twitter and on Facebook.

About Southern California Edison

An Edison International (NYSE:EIX) company, Southern California Edison is one of the nation’s largest electric utilities, serving a population of nearly 14 million via 4.9 million customer accounts in a 50,000-square-mile service area within Central, Coastal and Southern California.

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Southern California Edison has constructed a new section on its SONGS website covering the topic of decommissioning the plant.  Click here to view it. 

Click here to see the NRC website's information on decommissioning of nuclear facilities.

8:45 PM Eastern 7/24/2013
ATOMIC POWER REVIEW
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Monday, 1 April 2013

SCE Draft License Amendment for SONGS Unit 2 restart

Posted on 11:27 by Unknown
Press release from Southern California Edison follows:

----------

MediaContact: Media Relations, (626) 302-2255
Investor Relations Contact: Scott Cunningham, (626) 302-2540


SCE Submits Draft License Amendment for Nuclear Plant Unit 2 Restart
Amendment Submitted to Meet Customer Electricity Demand During Hot Summer Months

ROSEMEAD, Calif., April 1, 2013 — Southern California Edison (SCE) has voluntarily submitted a draft license amendment request to the Nuclear Regulatory Commission (NRC) for discussion. The draft is designed to support safely restarting Unit 2 of the San Onofre Nuclear Generating Station to address customer electricity demand and grid reliability concerns during the upcoming summer months. SCE is considering submitting a final amendment request after discussing it with the NRC staff at a public meeting Wednesday in Rockville, Maryland.

The draft license amendment request, if finalized and submitted for NRC approval, would support SCE’s plan to operate Unit 2 at 70 percent power for five months. Operating at 70 percent power prevents conditions that caused the tube-to-tube wear in Unit 3 that resulted in the nuclear plant being shut down since January 2012. SCE and three independent companies with expertise in nuclear generation have confirmed it is safe to operate the Unit 2 steam generators. The NRC has been evaluating these analyses, which are based on exhaustive testing and inspections, since October 2012.

“Since last fall, SCE has provided the public and the NRC with
detailed analyses from global experts that support safe restart of Unit 2,” said Ron Litzinger, SCE president.“We are considering the proposed voluntary amendment as the best path to get Unit 2 safely up and running before the hottest months of the year hit our region.”

SCE would be asking the NRC to act on the amendment before the end of May to facilitate timely restart of Unit 2 to meet peak summer electricity demand. Following the initial five-month operating period, SCE would shut down Unit 2 for steam generator tube inspections. Based on inspection data, Unit 2 would resume operation at 70 percent power for an appropriate operating period during the remainder of the 18-24 month fuel cycle while SCE updates its analysis to determine the appropriate long-term power level.

The San Onofre nuclear plant is the largest source of baseload generation and voltage support in the region and is a critical asset in meeting California’s clean energy needs. According to testimony filed by SCE for its General Rate Case and as part of a report prepared in 2010 by IHS Global Insight, operating the nuclear plant directly generates economic activity worth on average $2.2 billion per year. The impact grows to $3.3 billion per year if secondary economic effects are considered, which include the supply chain purchases of businesses supported by the nuclear plant and spending by those employed by the plant.

Both units at the San Onofre nuclear plant are currently safely shut down. Unit 2 remains shut down since it was taken out of service Jan. 9, 2012, for a planned outage. Unit 3 was safely taken offline Jan. 31, 2012, after station operators detected a leak in a steam generator tube.

More information is available at www.edison.com/SONGSupdateand at www.SONGScommunity.com. San Onofre is jointly owned by SCE (78.21 percent), San Diego Gas & Electric (20 percent) and the city of Riverside (1.79 percent). Follow us on Twitter (www.twitter.com/SCE) and like us on Facebook (www.facebook.com/SCE).

About Southern California Edison
An Edison International (NYSE:EIX) company, Southern California Edison is one of the nation’s largest electric utilities, serving a population of nearly 14 million via 4.9 million customer accounts in a 50,000-square-mile service area within Central, Coastal and Southern California.
###

Jennifer Manfrè
Principal Manager, Media Relations
Southern California Edison
626-302-7964


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2:25 PM Eastern 4/1/2013
Atomic Power Review
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Posted in license amendment, nrc, press release, san onofre, sce, songs, southern california edison | No comments

Saturday, 9 February 2013

Tube Wear Insights from San Onofre Reviewed at NRC Meeting

Posted on 09:58 by Unknown
{SCE Press Release Courtesy Jennifer Manfre.}

Tube Wear Insights from San Onofre Nuclear Plant Reviewed at NRC Meeting
 
ROSEMEAD, Calif., Feb. 7, 2013—Southern California Edison (SCE) shared its analysis of the causes of steam generator tube wear at the San Onofre Nuclear Generating Station today at a Nuclear Regulatory Commission (NRC) meeting on industry steam generator tube wear issues.
The presentation to the NRC reviewed the extensive analysis by SCE and its independent global experts of causes of tube wear in San Onofre Unit 3 and the corrective actions to eliminate those causes in Unit 2.
“After extensive analysis from three independent experts, we are confident that we understand the causes of the tube wear and have taken the appropriate steps to prevent it in Unit 2,” said Pete Dietrich, SCE senior vice president and chief nuclear officer. During the NRC meeting in Rockville, Md, other nuclear industry vendors and the Electric Power Research Institute also made presentations on steam generator issues.
SCE determined the tube-to-tube wear in the Unit 3 steam generators was caused by a phenomenon known as fluid elastic instability. This phenomenon stems from three factors: high steam velocity, low-moisture conditions in specific locations of the tube bundles, and ineffective tube supports in the same locations. SCE has proposed operating Unit 2 at 70 percent to decrease velocity, increase damping and prevent fluid elastic instability.
San Onofre is the largest source of baseload generation and voltage support in the region and is a critical asset in meeting California’s clean energy needs. Both units at San Onofre are currently safely shut down. Unit 2 remains shut down since it was taken out of service Jan. 9, 2012, for a planned outage. Unit 3 was safely taken offline Jan. 31, 2012, after station operators detected a leak in a steam generator tube.
NRC approval is required before SCE can restart Unit 2. The repair, corrective action and restart plan for Unit 2, along with additional technical information to address questions from the NRC, are available to the public at www.SONGScommunity.com

More information is available at www.edison.com/SONGSupdate and at www.SONGScommunity.com.
San Onofre is jointly owned by SCE (78.21 percent), San Diego Gas & Electric (20 percent) and the city of Riverside (1.79 percent). Follow us on Twitter (www.twitter.com/SCE) and like us on Facebook (www.facebook.com/SCE).

About Southern California Edison
An Edison International (NYSE:EIX) company, Southern California Edison is one of the nation’s largest electric utilities, serving a population of nearly 14 million via 4.9 million customer accounts in a 50,000-square-mile service area within Central, Coastal and Southern California.

1:00 PM Eastern 2/9/2013
ATOMIC POWER REVIEW

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Posted in san onofre, sce, songs, steam generators | No comments
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