Unit generators

Industrial—commercial—institutional steam-generating units (Subpart Db)... 

Table 1. Estimated Emissions from Fossil-Fueled Steam-Electric Generating Units at U.S. Electric Utilities, 10 t ...

Fossil-Fuel-Fired Steam Generators for Which Construction Commenced after August 17, 1971 Electric Utility Steam Generating Units for Which Construction Commenced after September 18, 1978... 

Industrial-Commercial-Institutional Steam Generating Units Incinerators Portland Cement Plants Nitric Acid Plants Sulfuric Acid Plants Asphalt Concrete Plants Petroleum Refineries... 

Installations prone to heavy vibrations and shocks stich as on the mounting platform near a laige power-generating unit, on a ship, locomotive and similar installations may require provisions to absorb shocks and dampen vibrations to prevent loosening of components and wire connections in a switchgear or a controlgear assembly. Some economical methods to achieve this can be by providing ... 

The total sequence of auto-synehronizing a standby generating unit with an existing system can thus be summarized as follows ... 

At this stage, an auto-synchronizing relay (Relay Code 25) is brought into the circuit. This relay is suitable for any size of a generating unit to be synchronized automatically with another unit or an infinite bus. The relay executes three basic functions ... 

Considering the system fault level at 32.8 kA, calculate the ground fault contribution by the generating units ... 

Remote supervision and automatic load-control of generating units, load dispatclt centres and suh-siatioris to maintain the desired operating parameters, including load sharing. 

When such large generating units are connected to a power grid the bus system connecting the generator and... 

The left-hand side of our equation says that fast fracture will occur when, in a material subjected to a stress a, a crack reaches some critical size a or, alternatively, when material containing cracks of size a is subjected to some critical stress cr. The right-hand side of our result depends on material properties only E is obviously a material constant, and G, the energy required to generate unit area of crack, again must depend only on the basic properties of our material. Thus, the important point about the equation is that the critical combination of stress and crack length at which fast fracture commences is a material constant. 

The large physical size of the later Magnox stations, such as Wylfa, led to the development of the more compact advanced gas-cooled reactor (AGR) design [31] that could utilize the standard turbine generator units available in the UK, Stainless-steel clad, enriched uranium oxide fuel can tolerate higher temperatures... 

Benefit The use of LNB decreases the amount of NOx formation at the facility and therefore may help facilities meet state RACT or BA CT (40 CFR 52) requirements. Additionally, this technology may help facilities meet standards of performance for industrial-commercial-institutional steam generating units in 40 CFR 60, Subpart Db. A decrease in a facility s NOx emissions may decrease the possibility that a facility will meet the Nox emission threshold for an air permit under 40 CFR 70 and 71. 

The required power for production facilities is either generated on site by engine- or turbine-driven generator units or purchased from a local utility company. For onshore facilities the power is generally purchased from a utility. However, if the facility is at a remote location where there... 

The NERC GADS ten-year review report for 1971-1980 on equipment availability presents statistical data sets on the performance of major types of electrical power generating units. Cumulative and unit.-year averages are calculated on such quantities as service hours, available hours, scheduled outage rate, mean time between full forced outages, shutdown because of economic reasons, and probability of outage. The number of start demands and successful starts are included. 

Component Failure and Repair Data tor Gasification-Combined-Cycle Power Generation Units Power Failure rates and averages restore times from published, analytical, and judgment data Data for 121 system/component groups from Coal Gasification Combined-Cycle Units 108. 

This report presents a set of failure rate and time-to-restore data for typical components of a coal gasification combined cycle power generation unit. The data was used to examine the reliability and availability of a generic power generation unit using risk analysis models. 

In the past, electric utilities dispatched generating units to meet demand on a lowest-to-highest cost basis. This form of dispatch is commonly referred to as economic dispatch. The marginal or incremental cost of dispatching units is traditionally the benchmark used to rank order available generators. These marginal costs, m the very short run, are typically... 

Historically, under both federal and state regulations, the demand for gas to heat homes and to meet needs of business and industiy took priority over utility use to generate electricity. These restrictions have been eased by amendments to the Fuel Use Act in 1987, and, as a result, new gas-fired generation units are being constructed. However, coal-fired units continue to provide over 50 percent of the total utility generation of electricity. 

The falling water hydrosystem is comprised of a dam, a reservoir, and a power generating unit (Figure... 

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