Machinery item designations

Support base design must also facilitate the initial positioning of the supported equipment, which may be problematic if for instance cast-in foundation bolts are employed. The designer should ensure that the system of dimensional tolerancing matches the needs of the supported equipment. For example, if two related machinery items have a small specified tolerance on their relative positions, the feature of the foundation design that limits the machinery positions, say the spacing of the cast-in foundation bolts, should be directly dimensioned one to another. If the relative positions are determined by dimensioning each set of bolts from an individual machine centreline, the possible cumulative tolerance error is tripled. 

Other modifications came in the form of paver kits which provide the screed control discussed in item 4, above and changes to the strike-off bar to minimize tearing in very fine, one-sized sand mixes. These modification kits have been designed primarily on Barber Greene series 100 and Blaw-Knox pavers. Successful demonstrations of these innovations were made by Shell in a number of small scale trials during 1976 and 1977. The most recent concept utilizes a totally self-contained paver-mixer developed by Shell in cooperation with Midland Machinery Co.,... 

Once the main items of equipment have been selected, it is possible to proceed with the design of the layout of the mill, design of the buildings, and some initial work on the layout of the machinery. Final work on the machinery layout will have to await working drawings from the suppliers, which will not be forthcoming until after the orders have been placed for the equipment. 

Finally, the mine s physical assets were removed and disposed of. All fuel, chemicals, and designated special wastes were removed and disposed of according to applicable regulations. Contaminated areas were rehabilitated. Buildings, machinery, and equipment were sold through an international firm specializing in disposal of such items. Structures not purchased for ongoing use on site were dismantled and their sites were reclaimed as wildlife habitat. 

A risk factor is defined as an attribute or exposure that increases the probability of a disease or disorder (Putz-Anderson, 1988). Biomechanical risk factors for musculoskeletal disorders include repetitive and sustained exertions, awkward postures, and application of high mechanical forces. Vibration and cold environments may also accelerate the development of musculoskeletal disorders. Typical tools that can be used to identify the potential for development of musculoskeletal disorders include conducting work-methods analyses and checklists designed to itemize undesirable work site conditions or worker activities that contribute to injury. Since most of manual work requires the active use of the arms and hands, the structures of the upper extremities are particularly vulnerable to soft tissue injury. WUEDs are typically associated with repetitive manual tasks with forceful exertions, such as those performed at assembly lines, or when using hand tools, computer keyboards and other devices, or operating machinery. These tasks impose repeated stresses to the upper body, that is, the muscles, tendons, ligaments, nerve tissues, and neurovascular structures. There are three basic types of WRDs to the upper extremity tendon disorder (such as tendonitis), nerve disorder (such as carpal tunnel syndrome), and neurovascular disorder (such as thoracic outlet syndrome or vibration-Raynaud s syndrome). The main biomechanical risk factors of musculoskeletal disorders are presented in Table 22. 

An agency designated or authorized to sanction, consent to, confirm, certify, or accept as good or satisfactory for a particular purpose or use, a method, procedure, practice, tool, or item of equipment or machinery. 

EN ISO 12100-2010. Safety of Machinery. General Principles for Design. Risk Assessment and Risk Reduction.This standard combines three previously issued ISO standards (including item 8 in this hsting) and replaces them. Risk assessments are explicitly required. 

In the APIOOO design the main items of rotating machinery are the reactor coolant pumps and the turbine generator. 

Notation is also made in Table 3.1 of which filtration equipment items are intended mainly or totally for gas filtration, and which, suitably designed, can be used for both fluids. It can be seen that the range of gas filtration equipment is much smaller than that for liquids. This is because the recovery of solids from a gas suspension is a task not often undertaken in a filter, a cyclone being used instead (and covered in Section 7). Gas filtration is almost always a decontamination process, whether it is of inlet air to buildings or machinery, or of exhaust streams from machines or processes. Solids recovery from liquid suspension, on the other hand, is a task frequently undertaken by filters, and the wide variety of types of liquid filter is almost entirely because of the problems imposed on filter design by the need to remove these collected solids from the inside of the filter. 

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