Generators increased safety

Private-sector benefits Provide more-secure and higher-quality electricity Become more profitable Help companies meet environmental and other regulations Reduce electricity costs—in particular, demand charges Reduce price uncertainty Increase safety Back-up generators... 

The first main feature of increased safety is the reduction of operational temperatures for (organic) insulating materials in order to achieve a higher lifetime in service and to reduce the probability of an early breakdown of the insulation in the windings of motors, generators, transformers (and inductances). 

This heading describes an extended application of increased safety. Terminal compartments are connected to the main part of the apparatus supplied with or generating electric power. In many applications, the main part... 

Compared with rotating machines in increased safety - e there are no additional requirements for the windings or for the gap between stator core and rotor. The interior of flameproof motors and generators is identical... 

Because fast neutrons are more effective at decaying many radioactive nuclides, the material separated from the uranium and plutonium during reprocessing is less radioactive than waste from other reactors. However, generation of relatively high levels of plutonium coupled with the need for reprocessing is problematic in terms of nuclear nonproliferation. Thus, political factors coupled with increased safety concerns and higher operational costs make fast breeder reactors quite rare. 

If you manage hazardous wastes properly, there should be fewer hazards for you, your co-workers, your community, and the environment. Recycling and reducing the amounts of waste generated can also increase safety. In fact, used oil, lead-acid and nickel-cadmium batteries, scrap metal, pesticides, and mercury-containing thermostats should be re- cycled where possible. 

Before we address some of the above questions in more detail here are two examples, if any are needed, which demonstrate that premium incentives do sometimes generate real safety improvements. In 1981-82, Repco in Launceston experienced 22 claims for RSI—repetition strain injury (Dunstone 1985, pp. 151-3). As a result its compensation premium jumped from 123 000 to 310 000, an almost threefold increase. This dramatic increase focussed management attention wonderfully on the problem of RSI. Repco accepted that the injuries were real and preventable, contrary to the approach taken by some employers, and set about solving the problem. It identified incorrect movements made by machine operators, trained its employees and introduced job rotation and exercise programs. The result was a major reduction in the number of new claims and a reduction in the premium over the next four years to close to its original level. 

SAKHA-92 is a maintenance-free nuclear power plant of increased safety. Plant design was developed on the basis of PWR technology, but implements integrated steam and gas pressurizer systems and relies on natural circulation of the primary coolant (Fig. 1). The use of such designs as leak-tight turbine-generator, canned condensate and feed pumps allows to secure the tightness of both primary and secondary circuits, which in turn make it possible to exclude some auxiliary systems. 

Steam line break accident sudden depressurization of the secondary side of the steam generators increases heat removal from the primary system with the consequent core overpower. Reactor shutdown (FSS and SSS) and the residual heat removal system are demanded and the reactor reaches a safe condition. In case of an hypothetical failure of both shutdown systems, reactor overpower does not compromise critical safety values (DNB and CPR) because primary total heat removal by the steam generators is intrinsically limited by the reduced tube-side water inventory. 

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