Employer duties

Dienst, m, service duty, employment. Dienstag, m. Tuesday, dienstbereit, a. ready for service. 

The equipment can be made in a wide range of sizes, from about 10 mm diameter to in excess of 2 m diameter. Operating speeds are effective from a fraction of a r/min to over 500 r/min, although most duties employ screw speeds in the range of 20-100 r/min. This variable capacity is used to control transfer rates hence many metering duties are undertaken with helical screw devices. 

These requirements are in addition to the duties employers have under road traffic law, e.g. the Road Traffic Act and Road Vehicle (Construction and Use) Regulations, which are administered by the police and other agencies such as the Vehicle and Operator Services Agency. 

The finding of misappropriation is highly dependent upon the protection that the owner has given the trade secret, as weU as the notice provided to employees. That is, an employee has a duty of confidentiaHty to his employer for that information which is considered secret, but the employer must provide the employee fair notice of the confidential nature of the material. 

HammerMills. One of the most versatile, economical, and widely used impact mills is the hammer mill (Fig. 12). Many variations are produced, with special types available for specialized appHcations, eg, quick screen change for animal feed, heavy duty for minerals, and light constmctions for woodchip. The principle employed is similar to that of the impact cmsher however, the rotation speed can vary from 20 up to 100 m/s with high speed fine-grinding versions. The oudet screen is used to vary the residence time, which in turn affects final particle size. The size of the end product is an order of magnitude finer than the size of the perforations in the outlet screen. 

Based on dryer cost alone, indirect-heat dryers are more expensive to build and install than direct-heat dryers designed for the same duty. As environmental concerns and resulting restrictions on process emissions increase, however, indirect-heat dryers are more attractive because they employ purge gas only to remove vapor and not to transport heat as well. Dust and vapor recovery systems for indirect-heat dryers are smaller and less cosdy to supply heat for drying, gas throughput in direct-heat dryers is 3—10 kg/kg of water evaporated indirect-heat dryers require only 1—1.5 kg/kg of vapor removed. System costs vary directly with size, so whereas more money may be spent for the dryer, much more is saved in recovery costs. Wet scmbbers ate employed for dust recovery on indirect-heat dryers because dryer exit gas usually is close to saturation. Where dry systems are employed, all external surfaces must be insulated and traced to prevent vapor condensation inside. 

The heavy-duty jacketed type (Fig. ll-62a) is a special custom-built adaptation of a heavy-duty vibratory conveyor shown in Fig. 11-60. Its apphcation is continuously to cool the crushed materi [from about 177°C (350°F)] produced by the vibratoiy-type caster of Fig. 11-53. It does not have the liqmd dam and is made in longer lengths that employ L, switchback, and S arrangements on one floor. The capacity rate is 27,200 to 31,700 kg/h (30 to 35 tons/h) with heat-transfer coefficients in the order of 142 to 170 W/(m °C) [25 to 30 Btii/(h ft °F)]. For heating or drying applications, it employs steam to 414 kPa (60 IbFin ). 

Continuous Furnaces Continuous furnaces are employed for the same general duties cited for batch furnaces. Units are gas, oil, or electrically heated and utihze direct circulation of combustion gases or muffles for heat transfer. Continuous furnaces frequently have an extension added for cooling the charge before exposure to atmospheric air. 

FIG. 18-91 Rake-mechanism designs employed for specific duties. (EIMCO Process Equipment Co.)... 

The resistance units, when used only for starting purpose, are in the circuit for only a short time and are thus short-time rated. However, when they are employed for speed control, braking or plugging operations, in addition to the starting duty, they may be rated for continuous duty. The resistance units are thus classified according to their duty demand, i.e. number of operations per hour (c/h). See Chapter 3 on the duty cycle. 

For drives with longer starling limes, relays suitable for heavy-duty starling, i.e. CT operated, must be employed (Section 12.4.1). 

For loads with fast variations, this type of a modified version too may be sluggish, due to step-by-step tuning. In such cases it is possible to employ two relays, one for coarse correction, such as through a serial relay (FIFO) which can quickly switch the large banks, and the other for fine tuning, which may be a binary relay. These two relays may be combined into one hybrid unit. The binary scheme can thus be modified to suit any required duty with prompt and finer corrections and least strain on a particular unit or on the system. 

The employer s duty is to ensure that the exposure of employees to a hazardous substanee is prevented or, if this is not reasonably praetieable, adequately eontrolled. Duties under tlie Regulations... 

Three additional mass-load paths S3-R2-S2, S3-R1-S1, S3-R1-S2 ) can be employed to shift removal duties from the process MSAs to the external MSA until all the waste load (0.104 kg phenol/s) is removed by the external MSA... 

The solution involves the use of two water substreams for scrubbing at 293 and 298 K. The first coolant is employed to undertake the cooling duty. Several conceptual flowsheets can be developed to implement this solution. Figures 9.18a and b illustrate such configurations. The developed mass exchanger is composed two sections. The top section employs Si,3 to reduce the ammonia composition in the gas from 0.13% to 0.10% and operates at an average water temperature of 293 K. In Fig. 9.18a, temperature is reduced by indirect contact cooling of the... 

Expert in the operations of equipment, not necessarily employees of the employer, and may perform temporary emergency response Examples crane or earth-moving equipment operations, or medical personnel whose typically duties do not include treating contaminated patients. 

Documenting training is important to ensure that a company can prove that the requirements have been met. Employers should train each affected employee assigned duties requiring the use of PPE on the following information ... 

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