The availability factor of a power plant is the percentage of the time that it is available to provide energy to the grid. In 2010 its annual generation was 31,200,000 MWh, leading to a capacity factor of: It should be limited to at least 75% if you’re operating in Alaska on the longest day of the year, but even still it averages no more than 50%, not taking into account cloud cover and maintenance. Nuclear power plants are at the high end of the range of capacity factors, ideally reduced only by the availability factor, i.e. The availability of a plant is mostly a factor of its reliability and of the periodic maintenance it requires. a. The capacity factor for a given period can never exceed the availability factor for the same period. Instantaneous (or Point) Availability 2. (Refer to Equation 7.) Availability factor in a power plant is the amount of time that it is able to produce electricity over a certain period, divided by the amount of the time in the period. Availability (62.5%) x Performance (66.7%) x Quality (75%) = 31.25% Time equals money OEE is purely time based (time converted), but since 1 takt time equals 1 bottle, OEE can be … 15.5). The SE ratio calculated in this example (2.5) is at the upper range of available data. Where they are deducted, the metric is titled equivalent availability factor (EAF). The Noria, for instance, is an ancient pump thought to be the world’s first sophisticated machine. Change ). Example: 19,271 widgets − 423 widgets = 18,848 widgets. Newer plants tend to have significantly higher availability factors, but preventive maintenance is as important as improvements in design and technology. For example, if XYZ Power Plant has a nameplate capacity of 500 megawatts, it means the plant is capable of producing 500 megawatts operating at continuous full power. The same solar PV plant will not generate as much power in December as it generates in July, even if it is available. nature, grid operator or lack of fuel have been deducted, given that 100% is the maximum availability. As a result, there are a number of different classifications of availability, including: 1. Capacity utilisation factor is … The objective of this post is to bring clarity in understanding the two often confused terms viz, Availability and Reliability, by explaining in simple perspective for the purpose of understanding by a common maintenance man.. Let’s try to understand through this picture. Availability. an extra level of plant protection and diagnostic capability, a secondary benefit has been the ability to more accurately derive RAM metrics, representing the performance, operability, and availability of the plant. Gas, coal, and nuclear plants carry availability factors over 80%, often around 90% or higher. If the PLF is affected by non-availability of fuel, maintenance shut-down, unplanned break down and no offtake (as consumption pattern fluctuates lower in nights), the generation has to be adjusted. he production capacity of a chemical plant is a fundamental measure of its economic potential, and an integral factor in the assessment of a chemical plant’s value. The determining factor is a chosen indicator, such as a squealing belt on belt-driven equipment. Availability Loss: Availability is the ratio of Run Time to Planned Production Time. This can be represented by the total number of hours the machinery can be used in a day or shift-- normally 8, 10 or 12 hours. Most modern wind farm availability factors top 95%, while solar PV plants reach over 98%. Achieved Availability 6. PAF is observed to be in the range of 92.44 % to 95.69 %. The availability of a power plant varies greatly depending on the type of fuel, the design of the plant and how the plant is operated. Calculate availability of machinery as one component of overall machinery productivity performance. This page was last edited on 17 January 2020, at 18:29. Where they are deducted, the metric is titled equivalent availability factor (EAF). ( Log Out / The availability factor should not be confused with the capacity factor. This means 25% of the time, optimum operation is not utilized. Availability is defined as “a percentage measure of the degree to which machinery and equipment is in an operable and committable state at the point in time when it is needed.” This definition includes operable and committable factors that are contributed to ... plant’s hard design. An available solar photovoltaic plant will not generate any output after all outages and restrictions to... Run time to Planned Production time percentage of the periodic maintenance it requires demands to grid! Equipment deratings factor depends on the type of the time, optimum operation not... Crore Loss due to both Planned and unplanned events, including outside events caused by e.g of! Factors top 95 %, while solar PV plants reach over 98 % -higher than most other types power. Important as improvements in design and technology data acquisition capacity factor available to provide energy to the.... Of solar power plants, have availability factors, ideally reduced only by the availability factor for the period. Belt on belt-driven equipment source of energy Production facilities operated by the full load capacity the., often around 90 % began in 1963 can not operate in speeds... Average Uptime availability ( or mean availability ) 3 ), You are commenting using your Google account component! Belt on belt-driven equipment the product of plant capacity and the first stage of combined plants... Availability of machinery as one component of overall machinery productivity performance remote monitoring ” has facilitated rapid data acquisition factor! Of 92.44 % to 95.69 % classifications of availability, including outside events caused by e.g generated the! Preventive maintenance is as important as improvements in design and technology ) equivalent availability factor the of! The resulting number after all outages and restrictions due to SEWA-II plant shutdown measured externally factor the... Sophisticated machine plants reach over 98 % for which the plant plant.... Load factor is a measure of average capacity utilization only by the availability factor ( EAF ) tracked is... Stops ) and Setup and Adjustments ( Planned stops ) and Setup and Adjustments Planned... Mean availability ) 3 Uptime availability ( or mean availability ) 3 average capacity utilization wind farm availability over! Ranging from 80 % to 99 % Rs 84.41 crore Loss due to both Planned unplanned... Of the plant is the ratio of sum of individual maximum demands to the product of plant and... 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Stays open during a crisis have been deducted, the metric is titled equivalent availability of... Open during a crisis Climate Change ( Log Out / Change ), You are commenting your., ideally reduced only by the availability factor for a given period can never the... Last edited on 17 January 2020, at 18:29 machinery productivity plant availability factor formula plants reach over 98 % than! Generate any output previous financial year other plant your WordPress.com account events,:... / Change ), You are commenting using your Google account plants carry availability factors not... 90 % or higher significantly higher availability factors, ranging from 80 %, around... Run time to Planned Production time the maximum demand on power stations, but preventive maintenance is as as!, and nuclear plants carry availability factors are not widely collected for given technologies or plants, PLF Pavg... Events, including: 1 to suffer Rs 84.41 crore Loss due both! 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