Design considerations serviceability

Below we discuss briefly the constructional requirements and general manufacturing practices for cubicle-type switchgear and controlgear assemblies, and the electrical and the mechanical design considerations to comply with the above design parameters and service conditions. 

These are the basic maximum ratings that a current-carrying conductor can carry under ideal operating conditions. They are influenced by the service conditions and other design considerations, a.s discussed in Section 28.5. Apply suitable derating factors to arrive at the actual current ratings of these conductors under actual operating conditions. 

Introduction Types of metal-enclosed bus systems Design parameters and service conditions for a metal enclosed bus system Short-circuit effects Service conditions Other design considerations Skin effect Proximity effect Sample calculation for designing a 2500 A non-isolaled phase aluminium busbar systern... 

Ensure the adequacy (in terms of quality, quantity and reliability) of services/ufilities, e.g. steam, process/cooling water, electricity, compressed air, inert gas, fire suppression systems, ventilation. Stand-by or emergency services may be required. Some general safety design considerations are summarized in Table 12.11. 

Moisture and corrosives content are the major gas stream characteristics requiring design consideration. Standard fabric filters can be used in pressure or vacuum service, but only within the range of about 640 mm of water column (25 inches of water column). Well-designed and operated baghouses have... 

Performance In general, a service performs more poorly than an in-process method call due to network latency and bandwidth constraints. To make things worse, a service may call other services to fulfill its responsibilities—a chain of services. Performance has to be a design consideration throughout the development cycle. 

What are some primary considerations in the design of services ... 

Service access to system utilities is an important design consideration. Routine calibration, maintenance, and repair are integral parts of maintaining a GMP facility. Areas to store critical spare parts and supplies should be included. 

AY-103 The Application and Maintenance of Polyurethane Foam Systems for Outdoor Service Vessels Operating Between -30°F and 225°F. Reconunended design considerations and guide specifications (PFCD-G52-10/87. 

ASTM C 945-81 (1987) Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels, 11 pp (Comm C-16)... 

Design considerations include the proximity to other metallic structures and existing CP systems, the type of grounding, the estimated remaining service life of the tank, the type and temperature of the stored product, the amount of product stored, the cycling rates, the method of tank bottom plate construction, the type of tank foundation, the type of secondary containment, if any, and the backfill soil characteristics. 

The reactor and steam generator internals important to acoustic and flow-induced design considerations comprise those systems, components, and structures whose structural integrity in service is essential to maintaining the safety function of the Neutron Control System and the Reseirve Shutdown Control Equipment. 

Anania, T.L., and J.A. Seta. 1975. Lead Exposure and Design Considerations for Indoor Firing Ranges. HEW (NIOSH) 76-130. U.S. Department of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, Cincimiati, OH [online]. Available http //www. cdc.gOv/niosh/docs/76-130/pdfs/76-130.pdf [accessed Apr. 24,2012]. 

The strength of a cast-in joint has to be determined only when adhesive/resin failure leads to a total failure of the structure or when the serviceability limits are exceeded due to adhesive/resin failure. This is because in many applications the adhesive/resin is primarily used for purposes other than load transfer and in these cases the bond strength is not a design consideration. 

Contents The contents of the vessel may require special design considerations and/or material selection. The following is a list of some of these special services ... 

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