Fixing electrical equipment

Fixed electrical equipment should not be installed Zone 2... 

Discharge from vent from the tank connections or shell (a) Where liquids or vapours discharged from the Fixed electrical equipment... 

Only wiring systems feeding fixed electrical equipment in the zone are permitted. 

Only wiring supplying fixed electrical equipment located in zones 0 and 1 must be installed. 

Only wiring supplying fixed electrical equipment located in zones 0, 1 and 2 must be installed. Switchgear, accessories incorporating switches or socket outlets must not be installed with the exception of ... 

Over recent years the process of classifying hazardous areas in such a way has been extended from its initial purpose of selecting fixed electrical equipment for use in the area, to helping to identify and eliminate potential ignition sources, including portable electrical equipment, vehicles, hot surfaces, etc. from flammable atmospheres. 

Fixed Electrical Equipment and Circuits Working ON OR Near Exposed De-energized Parts... 

When any employee is exposed to contact with parts of fixed electrical equipment or circuits that have been de-energized, the circuits energizing the parts shall be locked out or tagged out or both in accordance with the requirements of this paragraph. The requirements shall be followed in the order in which they are presented. 

Its compounds are used for high-temperature electrical equipment, for tanning leather, as a mordant (fixes the dyes in textiles so that they will not run), and as an anti chalking agent for paints. 

Fixed water spray systems are most commonly used to protect flammable liquid and gas vessels, piping and equipment, process structures and equipment, electrical equipment such as transformers, oil switches, rotating electrical machinery, and openings through which conveyors pass. The type of water spray will depend on the nature of the hazard and the purpose for which the protection is provided. 

IEC 62391-1. Fixed electric double layer capacitors for use in electronic equipment—Part 1 Generic Specification, 1st edn. International Standard, International Electrotechnical Commission, ICS codes 31.060.10, http //webstore.iec.ch/preview/info iec62391-l%7Bedl.0%7Den.pdf, Publication date April 10, 2006. 

Zone 1 - water heaters, showers and shower pumps and SELV fixed equipment may be installed in zone 1. The electrical equipment must have at least IPX4 protection against water splashing from any direction. If the electrical equipment may be exposed to water jets from, for example, commercial cleaning equipment, then the electrical equipment must have IPX5 protection. (The Index of Protection codes were discussed earlier, and are shown in Fig. 3.74.)... 

Zone 1 - water heaters, showers and shower pumps and SELV fixed equipment may be installed in zone 1. The electrical equipment must have... 

Electrical equipment must be free from recognized hazards that are likely to cause death or serious physical harm to employees. Elexible cords and cables (extension cords) should be protected from accidental damage. Unless specifically permitted, flexible cords and cable may not be used as a substitute for the fixed wiring of a... 

A diesel pump powered water system and portable and fixed chemical extinguishers have been provided to control any localized fire that would occur in electrical equipment or in grease, oil or solvents stored in the buildings Further, a continually manned central fire station Is located near the plant site ... 

The majority of fixed apparatus is of Class I construction, as defined in BS 2754 1999 Construction of electrical equipment for protection against electric shock. This means that it usually has a metal case enclosing the live parts and that the five parts are insulated from each other and from the carcass by basic insulation only. The case, which is earthed by connection to the protective conductor, protects the internal wiring and components from damage and prevents direct contact. 

Electrical equipment in the zone must have the degree of protection of at least IPX7. Only equipment which can reasonably only be located in the zone is permitted and it must be suitable for the conditions of use in the zone. Moreover, no switchgear or accessories are permitted unless they are incorporated in fixed current-using equipment suitable for use in the zone. 

In addition to the fixed installation, all other electrical equipment and apparatus used on the site should be included in the preventive maintenance programme. This will included portable electrical tools, handlamps, lighting equipment and so on. By far the most important element of this maintenance is a routine visual examination of the equipment, which will detect most faults that can lead to danger. These examinations should be carried out as pre-use user checks and then periodically as part of a formal visual inspection, typically at a frequency of once every week for 230 V hand-held equipment and extension leads, and monthly for 110 V equipment and fixed 230/400 V equipment. Guidance on the frequency of these examinations, and the frequency of tests aimed at detecting defects, is published in HSE s Guidance Note HS(G)141 and the lEE s Code of practice for in-service inspection and testing of electrical equipment. 

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