Licensing Issues

License renewal requested by Seabrook Nuclear Power Plant

On June 1, 2010, NextEra Energy Seabrook Station submitted an application to the Nuclear Regulatory Commission (NRC) for a license renewal to the year 2050, 20 years in advance of their current license expiration of 2030.

Long-standing groundwater infiltration issues at Seabrook Station are causing corrosion and degradation of plant systems and components. In researching NextEra’s license application, C-10 Foundation determined the application did not contain an adequate age management plan for inaccessible and submerged safety-related cables, transformers, and buried, below-ground or hard-to-access piping.

Of particular safety concern, NextEra did not include a plan for the moderate to severe Alkali-Silica Reaction (ASR) concrete degradation of four safety-related buildings. NextEra has not yet determined the extent of newly identified ASR concrete degradation or developed an age management plan for 2050.

The C-10 Foundation has supported contentions filed by interveners to Seabrook’s relicensing application.

To view the contentions, go to and scroll down to locate Seabrook from the ADAMS list on the left side of the page.


Petitions for Rulemaking & Contentions Submitted by C-10 and a coalition of environmental groups:

– On August 18, 2010, a Petition for Rulemaking to 10CFR 2.802: Seeking to Amend 10CFR 54.17(c) was submitted to the NRC by the C-10 Foundation, Friends of the Coast, Beyond Nuclear, SAPL, New England Coalition, and Pilgrim Watch. It requested that an application for license renewal may not be submitted to the Commission earlier than 10 years before license expiration from the current 20 year allowance.

View petition


Seabrook’s ASR-induced concrete degradation issue.

On Dec. 22, 2011, C-10 Foundation requested information from the Nuclear Regulatory Commission regarding Seabrook’s ASR-induced concrete degradation in several safety related buildings and structures. Read letter here (PDF file) NRC response (PDF file)

On Sept. 13, 2012, C-10 Foundation and Union of Concerned Scientists have requested the NRC require NextEra to conduct complete systematic testing and assessment of Seabrook Station’s containment to determine the current status of degradation of the concrete and corrosion of steel due to ASR concrete degradation. Read letter here (PDF file)



Seabrook Concrete Report 3-14-2012 (PDF file) , by Paul W. Brown, Ph.D.

Report finds many unanswered questions about concrete degradation at Seabrook Nuclear Plant. April 23, 2012 (Web article)

C-10 UCS Commentary March 2013 (PDF file)

Brown Comments on NRC Inspection Report (8-9-2013) (PDF file)

UCS C-10 Seabrook Concrete   10-29-2013 (PDF file)