Electrical, instrumentation and control systems.Containments, structures and component supports.Reactor vessel, internals and reactor coolant system.These systems and structures were grouped into the following areas: In order to prepare for the licence renewal application, the plant operator carried out a scoping and screening process to define which systems and structures were relevant for the renewed licence. Preparing for the period of extended operation The application has not, however, been withdrawn although Vistra’s focus is now on gaining a new and substantially longer licence for the existing plant. Meanwhile MHI shifted its focus to restarting its Japanese reactors following the Fukushima event. However, that application was suspended in 2013 when falling gas prices and the build out of wind in Texas hollowed out the financial case for expansion at the site. Vistra subsidiary Luminant formed a joint venture with Mitsubishi Heavy Industries for this purpose and in 2008 they jointly applied for a combined construction and operating licence from NRC, planning to build two 1,700 MW advanced PWRs of a Mitsubishi design. As a consequence, electricity output has also been increasing Unit 1 was uprated in autumn 2008 from 1,210 MWe to 1,259 MWe and Unit 2 was uprated in autumn 2009 from 1,208 MWe to 1,245 MWe.Īt that time it was thought that additional units could potentially be built at the site. Each reactor was initially operated at a rated thermal power of 3411 MWt, but by 2008, the two units were each producing 3612 MWt after a series of upratings. They are among the youngest of the USA’s fleet of nuclear stations – commercial operation began at Unit 1 on 13 August 1990 and Unit 2 on 3 August 1993. Each unit is based on a four-loop Westinghouse Electric nuclear steam supply system. The application for licence renewal – which requires no physical plant alterations or modifications – was submitted to the Nuclear Regulatory Commission (NRC) in October and was recently made public.Ĭomanche Peak 1 and 2 are sited 65 miles (108 km) southwest of Dallas-Fort Worth, Texas. The existing licences for unit 1 and unit 2 expire on 8 February 2030 and 2 February 2033, respectively. The company – acting both on its own behalf and on behalf of the plant owner, Comanche Peak Power Company – has submitted a formal application for licences that would add an additional 20 years to the plant lifetimes, bringing them up to 60 years each. Vistra Operations Company, the operator of Comanche Peak nuclear power plant in Texas, has sought renewed operating licences for Comanche Peak 1 and 2. One of the USA’s youngest nuclear plants has sought a renewed licence, which will extend its operating lifetime by 20 years.
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