Construction site installations temporary installation

Another expense which is included under indirect plant cost is the item of construction or field expense and includes temporary construction and operation, construction tools and rentals, home office personnel located at the construction site, construction payroll, travel and living, taxes and insurance, and other construction overhead. This expense item is occasionally included under equipment installation, or more often under engineering, supervision, and construction. If construction or field expenses are to be estimated separately, then Table 15 will be useful in establishing the variation in percent of fixed-capital investment for this indirect cost. For ordinary chemical-process... 

Temporary electrical supplies provided on construction sites can save many man hours of labour by providing the energy required for fixed and portable tools and lighting which speeds up the completion of a project. However, construction sites are dangerous places and the temporary electrical supply which is installed... 

In this chapter we have looked at many different types of electrical installations and wiring systems. Most of this type of work is carried out alongside other trades as a part of the construction process. Electricians have an important part to play in any construction project. However, a construction site has the potential to be hazardous because of the temporary and changing nature of the building environment. We have looked at the common causes of accidents at work and how to control the risks associated with various hazards in earlier chapters of this book. To make your work environment safe always ... 

Cranes are any lifting machine and associated parts where the movement of the load is not restricted by guides or rails. The description includes permanent fixed installations in buildings such as overhead traveling cranes, temporary installations typically found on construction and building sites, self-contained mobile cranes and hand-operated chain pulley blocks. 

Section 551 was introduced by Amendment 2 and applies to low voltage installations that incorporate generating sets running either continuously or in stand-by mode for permanent and temporary installations. This would include, for example, generators supplying temporary accommodation on construction sites and diesel generator sets operating in stand-by mode in hospitals. 

Subsection 611-03 recognises that many installations do not have isolating switches and are fed from the supply company s combined cut-out, neutral link and sealing box on the end of the service cable, so in such cases electrical maintenance is restricted to qualified persons. The restriction does not apply to relamping if an isolating switch is available. Supplies are sometimes taken from street furniture to feed temporary installations such as market stalls, Christmas decorative street lighting and small roadworks. Subsection 611-06 requires no impairment of the safety of the permanent installation so it must not be overloaded and the connection must be safe. The temporary installation should comply generally with section 604 for construction sites. 

External influences are dealt with in section 4, which should be considered in conjunction with Appendix B which tabulates the external influences and the appropriate protection against them to be found in Appendix B for the IP Code (ingress protection) and the IK Code (impact protection). The latter is relevant to the temporary installation equipment used on construction sites. 

The Construction (Design and Management) (CDM) Regulations require the installation designer to cooperate with other designers, such as the architect, the planning supervisor and chent, to ensure that the installation will be safe both initially and subsequently as it is altered to suit the various phases of the construction work. This entails a consideration of the risks and a determination of the means to be used to minimise them. When the site work begins, the electrical contractor responsible for the temporary installation has to plan his work so that it can be done safely. 

Construction sites are a special case. The electrical installation is temporary and is altered from time to time to meet the changing needs of the con-... 

Both temporary and permanent electrical supply installations should be installed in accordance with the latest addition of BS 7671 (lEE Wiring Regulations and the Electricity at Work Regulations 1989). Installations, particularly if of a temporary nature, for example in construction works, must be inspected regularly and tested at intervals no greater than those specified by the installation company. It should be noted that if temporary installations are in position for a greater period than 3 months on a construction site then they should be subject to test in line with HSE guidance every 3 months or when they have been altered. 

Subpart K deals with the means of providing electrical power, both permanent and temporary, to a jobsite. Subpart K also states that the electrical standards do not apply to existing permanent installations that were on the site before construction began. There are four major divisions of this subpart including installation safety requirements, safety-related work practices, maintenance and environmental considerations, and requirements for speciai equipment. 

Is there any construction on the site using power tools or any temporary power installation ... 

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