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Evaporative coolingĮvaporative coolers produce a moderate reduction in air temperature and increase humidity. When air conditioning systems are used, take care to ensure uniform air distribution throughout the workplace, otherwise some employees may complain of feeling cold while others are feeling hot.Īir conditioning units should be operated as per the manufacturer's instructions. This can range from small units that lower the air temperature but do not control humidity levels or air movement, to large units that can cope with extreme conditions as well as humidity and air movement. Large exhaust fans, mounted in roofs and walls, are useful for removing heated air and drawing in cooler air from outside. Large diameter ceiling fans can provide air movement that is effective over a wide area. There are many methods for increasing air movement, ie fans of various sizes (but may cause draught or noise problems). However, the beneficial effects may be restricted in some situations to the immediate locality of the heat source. under-floor heating systems using either electrical coils or heated fluids.electrical heating systems using electrical heaters.combined heat and ventilation systems using air conditioning systems. ![]() water-based central heating systems using radiators.Many types of heating systems are available: Although the initial cost of engineering controls may seem high, it has been found that the implementation cost is often offset by the resulting improvements to production.Īny practical solution to controlling thermal comfort is likely to require a combination of different options developed in consultation with employers, employees and their representatives. These should be the first choice to reduce or eliminate the hazard. Although some can be of a permanent nature, for example, emergency procedures and the provision of appropriate welfare facilities, such as competent first aiders with additional knowledge in the management and recognition of heat-related illnesses and injuries as well as ensuring the availability of appropriate first-aid equipment. your risk assessment should already address risks to pregnant employees, but you may choose to review it when an employee tells you she is pregnant, to help you decide if you need to do any more to control the risksĪdministrative controls include planning and rescheduling work times and practices and rest schedules, for example, scheduling 'hot' work for cooler times of the day or allowing employees to have flexible hours to help avoid the worst effects of working in high temperatures.Īdministrative controls are generally of a short-term, temporary nature. Improving comfort in clothing pdf professional#obtain medical advice from an occupational health professional for employees who are pregnant, have an illness or disability, or are on medication.provide appropriate supervision and training. Improving comfort in clothing pdf windows#
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