8. Heat and cold stress
Background
A distinction can be made between heat and cold stress (extreme situations) and problems regarding indoor climate (temperate conditions). In this section we will mainly focus on (extreme) cold and hot conditions, both indoors and outdoors. Technological cold can be mainly found in the food industry (walk-in coolers and freezers, fisheries, slaughterhouse, ...) while technological heat can be found in industries with high process temperatures (bakery, steel- and glass production, boiler houses, kitchens, fire-brigade, ...). Up to a certain level, the human body can deal with thermal stress (thermoregulation): vasodilation and sweating occur upon heat stress and shivering and vasoconstriction upon cold stress. Uponcold and heat stress, the most important adverse health effects occur in situations when it is no longer possible to keep the body temperature sufficiently under control (frostbite, coldinjuries, hypothermia upon cold stress, heat rash, edema, dehydration, cramps, heat stroke upon heat stress).
Legislation
- KB Thermal environment factors (04/06/2012) (Dutch)
- (ARAB (Dutch) Chapter II Section I art. 55 to 58)
- (ARAB (Dutch) Chapter II Section I art. 64 to 68)
- (ARAB (Dutch) Chapter III Section II art. 148 decies)
- Decree indoor air (11/06/2004) (Dutch)
Standards
- General:
- Comfort:
- NBN EN ISO 7730:2006 Ergonomics of the thermal environment - Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO 7730:2005)
- ISO/TS 13732-2:2001 Ergonomics of the thermal environment -- Methods for the assessment of human responses to contact with surfaces -- Part 2: Human contact with surfaces at moderate temperature
- Heat stress:
- NBN EN 27243:1994 Hot environments - Estimation of the heat stress on working man, based on the WBGT-index (wet bulb globe temperature) (ISO 7243:1989)
- NBN EN ISO 7933:2004 Ergonomics of the thermal environment - Analytical determination and interpretation of heat stress using calculation of the predicted heat strain (ISO 7933:2004)
- NBN EN ISO 13732-1:2009 Ergonomics of the thermal environment - Methods for the assessment of human responses to contact with surfaces - Part 1: Hot surfaces (ISO 13732-1:2006)
- Cold stress:
- NBN EN ISO 11079:2008 Ergonomics of the thermal environment - Determination and interpretation of cold stress when using required clothing insulation (IREQ) and local cooling effects (ISO 11079:2007)
- NBN EN ISO 15743:2008 Ergonomics of the thermal environment - Cold workplaces - Risk assessment and management (ISO 15743:2008)
- NBN EN ISO 13732-3:2009 Ergonomics of the thermal environment - Methods for the assessment of human responses to contact with surfaces - Part 3: Cold surfaces (ISO 13732-3:2005)
- BS 7915:1998 Ergonomics of the thermal environment. Guide to design and evaluation of working practices for cold indoor environments
- Measurements:
- Physiological measurements, health surveillance and sensitive groups:
- NBN EN ISO 9886:2004 Ergonomics - Evaluation of thermal strain by physiological measurements (ISO 9886:2004)
- NBN EN ISO 8996:2004 Ergonomics of the thermal environment - Determination of metabolic rate (ISO 8996:2004)
- NBN EN ISO 12894:2001 Ergonomics of the thermal environment - Medical supervision of individuals exposed to extreme hot or cold environments (ISO 12894:2001)
- NBN EN ISO 28803:2012 Ergonomics of the physical environment - Application of international standards to people with special requirements (ISO 28803:2012)
- ISO/IEC Guide 71 (2001) Guidelines for standards developers to address the needs of older persons and persons with disabilities
- Clothing and PPEs:
- NBN EN ISO 9920:2009 Ergonomics of the thermal environment - Estimation of thermal insulation and water vapour resistance of a clothing ensemble (ISO 9920:2007, Corrected version 2008-11-01)
- BS 7963:2000 Ergonomics of the thermal environment. Guide to the assessment of heat strain in workers wearing personal protective equipment
- Risk assessment and survey:
- NBN EN ISO 15265:2004 Ergonomics of the thermal environment - Risk assessment strategy for the prevention of stress or discomfort in thermal working conditions (ISO 15265:2004)
- NBN EN ISO 15743:2008 Ergonomics of the thermal environment - Cold workplaces - Risk assessment and management (ISO 15743:2008)
- NBN EN ISO 10551:2001 Ergonomics of the thermal environment - Assessment of the influence of the thermal environment using subjective judgement scales (ISO 10551:1995)
- NBN EN ISO 28802:2012 Ergonomics of the physical environment - Assessment of environments by means of an environmental survey involving physical measurements of the environment and subjective responses of people (ISO 28802:2012)
- Vehicles
- ISO/TS 14505-1:2007 Ergonomics of the thermal environment - Evaluation of thermal environments in vehicles - Part 1: Principles and methods for assessment of thermal stress
- NBN EN ISO 14505-2:2007 Ergonomics of the thermal environment - Evaluation of thermal environments in vehicles - Part 2: Determination of equivalent temperature (ISO 14505-2:2006)(+ AC:2009)
- NBN EN ISO 14505-3:2006 Ergonomics of the thermal environment - Evaluation of the thermal environment in vehicles - Part 3: Evaluation of thermal comfort using human subjects (ISO 14505-3:2006)
- more information on http://www.nbn.be
Documentation
- Arbokennisdossier Thermal Indoor climate (Dutch)
- Arbokennisdossier Extreme heat (Dutch)
- Arbokennisdossier Extreme cold (Dutch)
- BOHS Technical Guide No. 12 The Thermal Environment (2nd Ed.) and accompanying addendum
- BSOH Archive Seminar Thermal Environment factors (Dutch)
- INRS Working in heat and thermal confort (French)
- Health Council of the Netherlands - Heat stress in the workplace
- NVAB Dossier Working in cold or warm weather (Dutch)
- SIA Physical Hazards: Thermal Environment
- Sobane brochure Thermal Environment factors (Dutch)
- UCL Work in the heat (French) (Prof. J. Malchaire)
- The Ultimate Guide to Heat Stress (English)
Tools
- FNV WBGT Calculator (Dutch)
- IREQ, RT & TWC Calculator
- IRSST Tools Heat stress, work/rest regim RSST and ACGIH
- Physical agents (Prof. T. Bernard)
- PIMEX movies heat stress: turning off drying oven well in advance (Dutch), various cooling techniques (Dutch), drinking before intervention (Dutch) and forearm cooling effect (Dutch)
- PMV/PPD/WBGT/PHS and PREVHEAT (Prof. J. Malchaire)
Websites
- http://www.arbokennisnet.nl (Dutch) Specialised Dutch site to gain ‘arbokennis’ with a specific section Climate and lighting (Dutch)
- http://www.arboportaal.nl/ (Dutch) Starting point of the Dutch Ministry of Social Affairs and Employment for information on working conditions, specific section Climate (Dutch)
- http://www.bossons-fute.fr/ (French) French site with occupational flash cards and occupational risk flash cards: see flash card cold chambers, working at cold, working in heat,... (French)
- http://www.cdc.gov/ Centers for Disease Control and Prevention subsite on cold stress and heat stress
- http://www.deparisnet.be/ and click on Thermal Environments
- http://www.epa.gov/ the U.S. Environmental Protection Agency has a subsite natural disasters with pages on extreme heat as well as on snow and ice
- http://www.ggdkennisnet.nl/ (Dutch) has a specific file heat and environment (Dutch)
- http://www.hse.gov.uk/ the British Health and Safety Executive has a subsite cold stress and heat stress
- http://www.ihsa.ca/ The Canadian Infrastructure Health and Safety Association has a theme page on heat stress
- http://en.inrs.fr/ The French National Institute for Research and Security has a special section Physical agents (French) on the site, with pages on cold and heat (French)
- http://www.osha.gov/ The American Occupational Safety and Health Administration has a specific subsection on heat stress and pages with guidelines on cold stress and heat stress
- http://www.travailler-mieux.gouv.fr/ (French) The French ministry of labour has some specific flashcards on risk factors, e.g. on extreme temperatures (French)
- http://www.ubf-aca.be/ (Dutch and French) Union of Belgian frigorists (grouping of the Belgian society for cold and air treatment)
- http://www.employment.belgium.be/ has theme pages on thermal environment (Dutch) and high (Dutch) and low (Dutch) temperatures at work
- http://www.who.int/ has a specific page on the climate change