Press

Nuclear Power Plant Outages Were Relatively Low This Summer


graph of daily U.S. nuclear capacity outage, as explained in the article text

Source: U.S. Energy Information Administration

U.S. nuclear power plant outages averaged 4.6 gigawatts (GW) during the summer of 2017 (June through August), 10% lower than outages during the summer of 2016. Nuclear outages were highest in June, averaging 7.4 GW, but then averaged 3.8 GW in July and 2.6 GW in August. On August 14, nuclear outages reached their summer low, when just 0.4 GW of nuclear power plants were out.

Nuclear outages are typically lowest during the summer and winter months when electricity demand is relatively high. Outages can be either scheduled or unscheduled, and they can range from a partial outage, where only some of a plant's capacity is offline, to a full outage, where the entire plant is shut down.

A scheduled shutdown of a nuclear power plant may be timed to accommodate facility inspection, refueling, or maintenance and is typically planned well in advance. On rare occasions, these scheduled outages are deferred if the reactors are needed to continue operating during times of high electricity demand.

Most scheduled outages take place during the fall and spring when electricity demand is lower. Nuclear power plants typically refuel every 18 to 24 months. Other maintenance work, such as repairs and power uprates (operational changes that allow existing plants to produce more electricity), is often scheduled at the same time as refueling to minimize downtime.

A forced, or unscheduled, shutdown of a nuclear power reactor is one that is not planned. These shutdowns can be the result of equipment failure, operational error, fuel shortages or limitations, or weather or environmental concerns such as a hurricane. Most unplanned outages are becaused of non-reactor core issues—including external plant conditions, such as severe weather, or non-nuclear internal plant conditions, such as those involving steam turbine and electricity generation sub-systems.

Two significant forced outages in Tennessee and Texas affected the summer outage capacity in 2017. The newest U.S nuclear power plant, Watts Bar Unit 2, located in southeastern Tennessee, shut down because of a steam condenser failure on March 23, 2017, only five months after it first started producing electricity. The plant came back online on August 11. Comanche Peak Unit 2, located near Fort Worth, Texas, was forced to shut down from June 5, 2017, until August 15 to perform repairs to its main generator.

Hurricane Irma led to an unscheduled outage at both of Florida's nuclear power plants: Turkey Point and St. Lucie. The Turkey Point plant, on Florida's southeastern coast near Miami, was forced into unscheduled shutdown and reduced its output starting September 9. The St. Lucie plant, located on Florida's eastern coast, north of West Palm Beach, reduced power in advance of the hurricane-force winds. As a precaution, nuclear power reactors are required to shut down at least two hours before the onset of hurricane-force winds, usually between 70 and 75 miles per hour. Turkey Point and St. Lucie resumed 100% output on September 18 and September 14, respectively.

More information on the daily operation of U.S. nuclear power plants is available through EIA's Status of Nuclear Outages page, which is largely based on data collected by the U.S. Nuclear Regulatory Commission.

Principal contributor: Marta Gospodarczyk



New service from OilVoice
Trip Shepherd is for companies who need to track their staff in areas of risk.
It's free to use, so we invite you to try it.

Visit source site

https://eia.gov/todayinenergy/detail.php?id=33112&...

NuclearElectricity GenerationHurricaneEnergy Information Administration EIAUnited States

More items from oilvoice


Cyber Security Experts Unite to Protect Europe’s Critical Industries

CS4CA Summit Returns to London this October Staying abreast of fast-paced industry developments is crucial for cyber security professionals. And while one can learn a lot from publications and social media, it's hard to beat the value of insights gained first-hand from peers. This is why 150+ IT ...

OilVoice Press - OilVoice


Posted 13 days agoPress > cybereurope

Africa E&P Summit

The organisers of the Africa E&P Summit are bringing together Africa's leading exploration companies and governments, just one of the many reasons why you should be attending frontier's event that they are organising and hosting in London at the IET: Savoy Place, 22-23 May. Over 200 key senior exec ...

OilVoice Press - OilVoice


Posted 4 months agoPress > Africasummitoil summit +2

Equinor Deepens in Offshore Wind in Poland

Equinor has exercised an option to acquire a 50 % interest in the offshore wind development project Bałtyk I in Poland from Polenergia. This transaction is a follow-up of the agreement between the two companies which came into force in May 2018 , by which Equinor acquired a 50 % inter ...

OilVoice Press - OilVoice


Posted 9 months agoPress > EquinorEquinor EnergyPoland +2

Nigeria has highest capex on crude and natural gas projects in sub-Saharan Africa Over Next Seven Years, says GlobalData

Nigeria accounts for more than 34% of the proposed capital expenditure (capex) on planned and announced crude and natural gas projects in the sub-Saharan Africa over the period 2018–2025, according to GlobalData , a leading data and analytics company. The company's report: ‘H2 2018 Production ...

OilVoice Press - OilVoice


Posted 9 months agoOpinion > GlobalDataNigeriaCrude +5

CNOOC Signs Strategic Cooperation Agreements with 9 International Oil Companies

HONG KONG, Dec. 18, 2018 /PRNewswire/ -- CNOOC Limited (the "Company", SEHK: 00883, NYSE: CEO, TSX: CNU) announced today that its parent company, China National Offshore Oil Corporation (CNOOC), has signed Strategic Cooperation Agreements with 9 international oil companies including: Chevron, Conoco ...

OilVoice Press - OilVoice


Posted 9 months agoPress > CNOOCChina National Offshore Oil CorporationChevron +11
All posts from oilvoice