Sep 29, 2024: The case against restarting Three Mile Island’s Unit-1

Three Mile Island Nuclear Station Unit 1:  Notification of Conduct of a Triennial Fire Protection Baseline Inspection

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From PRNewsWire:

The refueling outage for Cook Nuclear Plant Unit 2 will be extended by two to three weeks for repairs to internal components of the reactor vessel. The plant, owned and operated by Indiana Michigan Power, a unit of American Electric Power (NYSE:  AEP), had an initial projected return-to-service date of Nov. 6.

Routine inspections following removal of the fuel assemblies identified damaged bolts from the reactor vessel's baffle plates. The baffle plates direct water flow through the fuel assemblies in the reactor. Similar bolt failures have occurred and been repaired previously in the industry. There are existing safety analyses and specialized repair tools being used to resolve the issue.

The 18 damaged baffle bolts are grouped on one baffle plate. Those bolts are being removed and analyzed. Determining the root cause of the failure is ongoing. Data and analyses from those 18 bolts will determine final repair plans. In keeping with its conservative operating philosophy, I&M plans to perform all necessary repairs during this refueling outage to ensure the problem is bounded and repairs support long-term reliable operation.

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From the York Dispatch:

Engineers at Peach Bottom Atomic Power Station are working with a vendor to repair a helium leak from a system designed to stabilize radioactive waste inside a large cask.

No radiation has been released, and the amount of escaped helium is inconsequential, said plant officials and the federal agency that oversees security at the plant.

Plant spokesman David Tillman said there are 49 casks on site at Peach Bottom. Each unit -- inside of which radioactive waste or "spent fuel" from the plant is stored -- is 115 tons of steel equipped with a pressurization monitoring system.

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From the Rutland Herald:

The new regional administrator for the Nuclear Regulatory Commission said Monday he is urging Entergy Nuclear to be more “open and transparent” with the people of Vermont about the problems at Vermont Yankee.

William Dean, a 25-year NRC veteran of the federal agency, also said the NRC had no information about the repeated rumored sale of Vermont Yankee, whose license to operate expires in March 2012.

Over the weekend, a British business website, SGAM, citing sources, said Entergy Nuclear had hired the Morgan Stanley investment firm to handle the potential sale. In August, Energy Daily, an e-newsletter, again citing anonymous sources, had said the plant was for sale.

Dean said usually such developments are kept very quiet in the corporate world, noting that the recent failure of the deal between a French firm to build a new reactor at the Calvert Cliffs nuclear plant took the agency completely by surprise.

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From the Press of Atlantic City:

The Oyster Creek nuclear power plant will use an age-old method to clean up a radioactive water spill: For this plant and others like it, the solution to pollution is dilution.

Oyster Creek will soon begin pumping 25 to 50 gallons per minute from the Cape May and Cohansey aquifers to remove water contaminated with the radioactive material tritium. That amount is a trickle compared with the 115,000 to 460,000 gallons per minute that flows through the Ocean County plant to cool its radioactive core, owner Exelon Corp. said.

Exelon discovered on April 15, 2009, that an estimated 180,000 gallons of tritium-laced water had leaked from a pipe, seeping beneath the ground into two aquifers that supply drinking water to more than 1 million New Jersey residents.

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Facility: PEACH BOTTOM
Event Date: 10/22/2010

SPENT FUEL STORAGE RELATED DEFECT - CASK LEAKAGE RATE GREATER THAN TECHNICAL SPECIFICATION

"On 10/22/10, at 1058 EDT, a troubleshooting of Independent Spent Fuel Storage Installation (ISFSI) Cask TN-50-A indicated that a leak existed in the cask lid sealing area at a rate greater than allowed by ISFSI Cask Technical Specification (TS) Section 3.1.3, Cask Helium Leak Rate. TS 3.1.3 limits the Cask Helium Leak Rate to 1.0 E-05 ref-cc/sec. The cask is currently in unloading operations and is located within the Peach Bottom Atomic Power Station Unit 3 containment building. Preliminary review indicates that a leak exists at the weld plug that provides sealing of the drilled interseal passageway associated with the drain port penetration of the cask lid. This leak effectively provides a bypass of the main lid outer confinement seal.

"This report if being submitted pursuant to 10CFR72.75(c)(1) as a result of a material defect in a weld in the cask main lid. This report is also being submitted pursuant to 10CFR72.75 ® (2) as a result of a resolution in the effectiveness of the cask confinement system.

"The Certificate of Compliance for this cask is 1027 (Amendment 1).

"The NRC Resident Inspector has been informed of this notification."
 

From examiner.com:

A first-ever report on the hidden financial risk for investors who buy the water and electric utility bonds that finance much of the country's vast water and power infrastructure was released October 22, 2010, by Ceres and Water Asset Management.

The report, The Ripple Effect: Water Risk in the Municipal Bond Market, evaluates and ranks water scarcity risks for public water and power utilities in some of the country's most water-stressed regions.

"Water scarcity is a growing risk to many public utilities across the country and investors owning utility bonds don't even know it," said Mindy Lubber, president of Ceres, which authored the report. "Utilities rely on water to repay their bond debts. If water supplies run short, utility revenues potentially fall, which means less money to pay off their bonds. Our report makes clear that this risk scenario is a distinct possibility for utilities in water-stressed regions and bond investors should be aware of it."

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Prepared Remarks for The Honorable Gregory B. Jaczko Chairman, U.S. Nuclear Regulatory Commission

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From WGRZ:

Contaminated water inching through the ground at a New York nuclear cleanup site is about to hit a wall.

And if all goes as planned, it will seep through and come out clean on the other side.

Crews at the West Valley Demonstration Project in western New York are digging a three-foot wide trench as deep as 30 feet and filling it with volcanic material called zeolite.

The in-ground zeolite wall is meant to decontaminate groundwater as it filters through.

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From Fox News:

Maricopa County Sheriff's spokesman Brian Lee says security officers at the Palo Verde Nuclear Generating Station called them at about 5 a.m. after they found the suspicious package. A second call initially led to confusion that a second device may have been found, but that was quickly discounted.

Lee says a sheriff's bomb squad is investigating.

A spokesman for plant operator Arizona Public Service Co. says security guards
found the suspicious package during a search of a vehicle at a checkpoint about a mile from the plant.

The plant is operating normally, but traffic in and out is stopped.

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