International Organization for Standardization standards

for assessing thermal environments ISO standards for assessing thermal environments can be divided into three categories: hot, moderate and cold (Orosa and Oliveira 2012; Parsons 2006).
For hot environments, the ISO standards include:

  • BS EN ISO 27243:1994, ISO 7243:1989 (British Standards Institution 1994; Parsons 2006) for the estimation of heat stress based on the Wet Bulb Globe Temperature (WBGT).
  • BS EN ISO 7933:2004 (British Standards Institution 2005) for the analytical determination and interpretation of heat stress using calculation of the predicted heat strain.
  • BS EN ISO 9886:2004 (British Standards Institution 2004) for the evaluation of thermal strain by physiological
    measurements. Also applicable to cold and moderate environments.
  • BS EN ISO 13732-1:2008 (British Standards Institution 2009) for methods for the assessment of human responses to contact with hot surfaces.

For moderate environments, the ISO standards include:

  • BS EN ISO 7730:2005 (British Standards Institution 2006) for the analytical determination and interpretation of thermal comfort using calculation of the Predicted Mean Vote (PMV) and Predicted Percent Dissatisfied (PPD) indices and local thermal comfort criteria.
  • BS EN ISO 10551:2001 (British Standards Institution 2002) for the assessment of the influence of the thermal environment using subjective judgement scales.
  • BS EN ISO 9886:2004 (British Standards Institution 2004) for the evaluation of thermal strain by physiological measurements. Also applicable to hot and cold environments.
  • BS EN ISO 13732-2:2001 (British Standards Institution 2013) for methods for the assessment of human responses to contact with moderate temperature surfaces.

For cold environments, the ISO standards include:

  • BS EN ISO 11079:2007 (British Standards Institution 2008) for the determination and interpretation of cold stress when using required clothing insulation and local cooling effects.
  • BS EN ISO 9886:2004 (British Standards Institution 2004) for the evaluation of thermal strain by physiological measurements. Also applicable to hot and moderate environments.
  • BS EN ISO 13732-3:2008 (British Standards Institution 2009) for methods for the assessment of human responses to contact with cold temperature surfaces.
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