nrc information notice 201120 concrete degradation by

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

NRC Information Notice 2011-20: Concrete Degradation by ...

NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION OFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDS OFFICE OF NEW REACTORS WASHINGTON, DC 20555-0001 November 18, 2011 NRC INFORMATION NOTICE 2011-20: CONCRETE DEGRADATION BY ALKALI-SILICA REACTION ADDRESSEES All holders of an operating license or construction permit for a nuclear ...

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NRC: ML12097A556 - nrc.gov

U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 References: 1) Fermi 3 Docket No. 52-033 2) NRC Information Notice 2011-20, "Concrete Degradation by Alkali-Silica Reaction," dated November 18, 2011 Subject: Detroit Edison Company Submittal of Actions to Address NRC Information Notice 2011-20

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UNITED STATES OF AMERICA NUCLEAR REGULATORY

“Concrete Degradation by Alkali-Silica Reaction,” NRC Information Notice 201120 (Nov. 18, - 2011), at 2 (ADAMS accession no. ML112241029) (IN 2011-20). - 3 - of moisture. 6. This reaction produces an alkali-silica gel that can absorb water and expand to cause micro-cracking of the concrete. 7.

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Request for Additional Information Docket No. 72 ... - nrc.gov

NRC Information Notice 2011-20, “Concrete Degradation by Alkali-Silica Reaction,” [November 10, 2011]. These two information notices address recent operating history for dry cask storage systems. This information is required to demonstrate compliance with 10 CFR 72.240(c)(3).

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NRC Information Notice 2014-07: Degradation of Leak-Chase ...

May 05, 2014  nuclear regulatory commission . office of nuclear reactor regulation . office of new reactors . washington, dc 20555-0001 . may 5, 2014 . nrc information notice 2014-07: degradation of leak-chase channel systems for floor welds of metal containment shell and concrete containment metallicliner . addressees

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Expert Panel Workshop on Concrete Degradation - nrc.gov

the U.S. Nuclear Regulatory Commission (NRC) to evaluate the degradation of concrete structures in spent nuclear fuel dry cask storage systems (DCSSs). In DCSSs, concrete is commonly used for shielding structures, such as overpacks, as well as for the support pads on which the DCSS is placed. The NRC Office of Nuclear Material Safety and Safeguards

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Information Notice No. 98-26: Settlement Monitoring ... - NRC

Jul 24, 1998  Information Notice No. 98-26: Settlement Monitoring and Inspection of Plant Structures Affected by Degradation of Porous Concrete Subfoundations. UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION WASHINGTON, D.C. 20555-0001. July 24, 1998

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NRC Guidance Documents - Energy

Dec 16, 1991  NRC Information Notices [link to NRC website: Information Notices] Information Notice 84-72: Clarification of Conditions for Waste Shipments Subject to Hydrogen Gas Generation. Information Notice 97-47: Inadequate Puncture Tests For Type B Packages Under 10 CFR 71.73(c)(3)

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Noise Reduction Coefficients (NRC) Ratings for Common ...

For example, a concrete wall could be 0% to 35% absorptive. If available, it is always best to get the tested NRC rating from the manufacturer. Because of these ranges and the limitations of the NRC rating system, it is highly recommended to have an acoustical professional analyze your

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Concrete deterioration at Seabrook Station prompts ...

Dec 02, 2011  "The NRC has issued an information notice to all U.S. nuclear power plant operators regarding the issue of alkali-silica reaction-induced (ASR) concrete degradation," NRC Region 1 spokesman Neil ...

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Nuclear Engineering and Design

(ML121160422, 2012; Haberman, 2013), for which the US Nuclear Regulatory Commission (NRC) issued Information Notice (IN) 2011-20, ‘‘Concrete Degradation by Alkali Silica Reaction,” on November 18, 2011. Considering that US commercial reactors in operation have reached the age when ASR degradation could be

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NRC discusses concrete degradation at Seabrook Station ...

Dec 12, 2012  NRC representatives believe the concrete condition is the first confirmed instance of such deterioration in a safety-related concrete structure at a nuclear plant in the United States.

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NRC Closes Out Confirmatory Action Letter o n Steps Taken ...

The NRC will seek to reschedule the meeting once normal government operations resume. Further information on the status of the open house and meeting will be posted on the NRC . website. as it becomes available. More information about the NRC’s reviews of Seabrook concrete degradation can be found on an agency . webpage devoted to that topic.

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N-plants notified of concrete problem Local News ...

Dec 02, 2011  WASHINGTON, D.C. — The Nuclear Regulatory Commission has sent a notice to all nuclear power plants in the nation, alerting them to a potential concrete problem first discovered at the

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Information Notice No. 98-26: Settlement Monitoring and ...

nuclear regulatory commission office of nuclear reactor regulation washington, d.c. 20555-0001. july 24, 1998. nrc information notice 98-26: settlement monitoring and inspection of plant structures affected by degradation of porous concrete subfoundations : addressees.

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TABLE OF CONTENTS I. Introduction 2 II. Dry Storage System ...

ATTACHMENT 19 - NRC Information Notice 2012-20: Potential Chloride-Induced Stress ... COMMISSION, Expert Panel Workshop on Degradation of Concrete in Spent Nuclear Fuel Dry Cask Storage Systems, February 24, 2015, Pages 138-161, 335-351

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NRC Information Notice 2011-15: Steel Containment ...

united states nuclear regulatory commission office of nuclear reactor regulation washington, dc 20555-0001 august 1, 2011 nrc information notice 2011-15: steel containment degradation and associated license renewal aging management issues

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Information Notice 1990-02, Potential Degradation of ...

Information Notice 1990-02, Potential Degradation of Secondary Containment. From kanterella. Jump to navigation Jump to search. Potential Degradation of Secondary Containment; ML031130355: Person / Time; Site: Beaver Valley, ...

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Information Notice 2013-07, Premature Degradation of Spent ...

united states nuclear regulatory commission office of nuclear material safety and safeguards washington, dc 20555-0001 april 16, 2013 nrc information notice 2013-07: premature degradation of spent fuel storage cask structures and components from environmental

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Concerns, support voiced at NRC hearing News ...

Feb 17, 2019  This has resulted in the degradation of some of the concrete as shown by patterns of cracking, Donahue said. ASR is a progressive but slow-moving degradation of concrete, NRC officials stated.

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NRC wants more information on Seabrook concrete tests ...

Dec 26, 2015  "The NRC is still reviewing NextEra’s plans for addressing concrete degradation, also known as alkalai silica reaction, at the Seabrook nuclear power plant and how it might impact the facility ...

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NRC to increase oversight of concrete degradation reviews ...

The Nuclear Regulatory Commission will conduct additional inspections and reviews to independently verify and assess work being done to address concrete degradation identified at the Seabrook nuclear power plant. The single-reactor facility is located in Seabrook, N.H., and is operated by NextEra Energy Seabrook, LLC.

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U.S. NUCLEAR REGULATORY COMMISSION REGION I

NOTICE OF PUBLIC MEETING . MN No. 17-015 . May 26, 2017 . Licensee: NextEra Energy, Seabrook, LLC ... New Hampshire03842 . Purpose: The U.S. Nuclear Regulatory Commission (NRC) will host a meeting with the public to present the NRC’s assessment of safety performance at the ... Information on the NRC’s . oversight of concrete degradation at ...

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Effect of Alkali-Silica Reaction on Shear Strength of ...

Oct 01, 2015  Several cases of ASR in nuclear generating stations have been disclosed in Japan (Takatura et al. 2005), Canada at Gentilly 2 NPP (Tcherner and Aziz 2009) 1, and more recently, in the United States for which the U.S. Nuclear Regulatory Commission issued Information Notice (IN) 2011-20, ’Concrete Degradation by Alkali Silica Reaction,’ on ...

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Coming Attractions Facility updates

Information Notice 2011-20, Concrete Degradation by Alkali-Silica Reaction ADAMS Accession No. ML112241029 Perry Nuclear Power Plant, Unit No. 1 - Request for additional information regarding 60-

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NRC to increase oversight of concrete degradation reviews ...

The Nuclear Regulatory Commission will conduct additional inspections and reviews to independently verify and assess work being done to address concrete degradation identified at the Seabrook nuclear power plant. The single-reactor facility is located in Seabrook, N.H., and is operated by NextEra Energy Seabrook, LLC.

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Nuke Plant Cited Over Widening Concrete Cracks Town ...

Aug 12, 2021  It has been called “concrete cancer.” The inspectors were also concerned with the degradation of the steel rebar in the concrete structures. The NRC report from the inspection conducted in June was released two days after NRC Commissioner Jeff Baran visited the plant for the first time to learn about Seabrook’s degrading concrete.

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NRC wants more information on Seabrook concrete tests ...

Dec 26, 2015  "The NRC is still reviewing NextEra’s plans for addressing concrete degradation, also known as alkalai silica reaction, at the Seabrook nuclear power plant and how it might impact the facility ...

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NRC board delays Seabrook concrete decision until July ...

Mar 28, 2020  Also last year, the NRC approved an amendment to address the concrete degradation caused by ASR. The amendment is being challenged by C-10. For more information on C-10, visit c-10

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Concerns, support voiced at crowded NRC hearing Local ...

Feb 15, 2019  The NRC has since decided to seek community feedback on a license amendment addressing the presence of concrete degradation caused by alkali-silica reaction, or

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NRC to discuss 100-year licenses for nuclear plants ...

Jan 20, 2021  Prior to and while Seabrook Station was undergoing its recent license renewal process, C-10 pressed the NRC to address concrete degradation caused by alkali-silica reaction in which tiny cracks ...

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Plan to deal with Seabrook's concrete problem with NRC ...

Aug 03, 2016  The NRC’s eventual acceptance of NextEra’s plan to monitor and manage the alkali-silica reaction concrete problem over the coming decades is critical to Seabrook Station’s gaining the agency ...

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NRC grants license extension to Seabrook Station News ...

Mar 13, 2019  In response, opponents, including the Newburyport-based watchdog group C-10, have urged the NRC not to renew the license because of the concrete degradation. A few weeks ago, C-10 filed an ...

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Nuclear Generating Station) ) April 3, 2006 )

Document Date: 12/03/1990 provided to NRC PDR Title: GPU Nuclear forwards supplemental information supporting utility overall plan to address drywell corrosion issue at facility. Document Date: 11/26/1990 Title: NRC Information Notice No. 86-99, Supplement 1: Degradation of Steel Containments issued in response to drywell corrosion at Oyster Creek.

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Premature failure of U.S. spent nuclear fuel storage ...

Aug 21, 2014  The California Public Utilities Commission (CPUC) should delay funding the new San Onofre dry cask storage system until Southern California Edison provides written substantiation that the major problems identified below are resolved. Sign petition to STOP California from wasting $400 million on inferior nuclear waste storage canisters. Print version: Premature Failure of U.S. Spent Nuclear ...

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Markey, Warren ask NRC for stricter conditions at Seabrook ...

May 11, 2021  “ASR degradation at Seabrook — which NextEra first identified in 2009 — is a serious concern because the station sits on a marsh and its concrete has continual contact with water,” Markey ...

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(PDF) Proceedings of the 15th World Multi-Conference on ...

Proceedings of the 15th World Multi-Conference on Systemics, Cybernetics and Informatics (WMSCI 2011), Vol 2

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