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BS 7963:2000

Current

Current

The latest, up-to-date edition.

Ergonomics of the thermal environment. Guide to the assessment of heat strain in workers wearing personal protective equipment

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-07-2000

€231.38
Excluding VAT

Committees responsible
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 PPE and heat balance
5 Analysis of work situations
6 The individual
Annex A (informative) Application of the measurement methods
                      given in BS EN 27243:1994 and BS EN
                      12515:1997 to workers wearing PPE
Annex B (informative) Worked examples
Annex C (informative) Examples of clothing worn and
                      corresponding thermal insulation
                      values
Annex D (informative) Theory behind modifications to BS EN
                      12515:1997 for workers wearing PPE
Bibliography
Figure 1 - Routes of heat loss from the body
Table 1 - Examples of metabolic rates for typical industrial
          activities
Table 2 - Estimated increases in metabolic rate due to
          wearing PPE
Table 3 - Body coverage of garments (from BS ISO 9920:1995)
Table A.1 - Correction factors to be applied to BS EN
            27243:1994 WBGT reference values when PPE is worn
            (from ACGIH, 1990 [1])
Table B.1 - Thermal insulation of clothing ensemble
Table B.2 - Calculation of proportion of the body covered
Table C.1 - Intrinsic thermal insulation values for typical
            clothing and footwear
Table C.2 - Typical thermal insulation values of clothing
            ensembles

Gives a guide to assessing the effects of personal protective equipment (PPE) on heat stress and its consequences for possible heat-related health problems (heat strain).

Committee
PH/9
DevelopmentNote
Supersedes 98/541260 DC (10/2005) Reviewed and Confirmed by BSI, August 2006. (07/2006)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Current
Supersedes

This British Standard gives guidance on assessing the effects of personal protective equipment (PPE) on heat stress and its consequences for possible heat-related health problems (heat strain). This standard gives guidance on the application of the methods for measuring heat stress given in BS EN 12515:1997 and BS EN 27243:1994 to workers wearing PPE. NOTE 1 The conditions in which BS EN 12515:1997 and BS EN 27243:1994 are applicable (as outlined in the scope of each of these standards) are not extended by this British Standard. NOTE 2 Guidance on the application of the methods given in BS EN 12515:1997 and BS EN 27243:1994 to measurement of heat stress in workers wearing PPE is given in annex A and worked examples are given in annex B. Examples of the thermal insulation values of clothing are given in annex C. The theory behind the modifications to the method given in BS EN 12515:1997 for workers wearing PPE is given in annex D. This British Standard is intended for use by all who: have a responsibility for the health and safety of workers wearing PPE in situations which could lead to heat strain; advise those with this responsibility; provide information to those with this responsibility. This British Standard applies to all PPE, which includes clothing worn in the workplace to protect the wearer. It does not consider special thermal protective clothing (e.g. water-cooled suits, ventilated suits, heated clothing) because the effect of these items requires special consideration. It does not apply to heat stress in hypo- or hyperbaric environments, or when the body is immersed in water. This British Standard is not concerned with thermal comfort. Methods for assessing thermal comfort are given in BS EN ISO 7730 and BS ISO 10551. This British Standard applies to workers wearing PPE in cool and moderate thermal environments, as well as hot environments, as wearing PPE can contribute to heat stress even in cool or moderate thermal environments.

BS 7184:2001 Selection, use and maintenance of chemical protective clothing. Guidance
BS 8469:2007 Personal protective equipment for firefighters. Assessment of ergonomic performance and compatibility. Requirements and test methods
BS 7971-2:2003 Protective clothing and equipment for use in violent situations and in training Guidance on risk assessment and on the selection, use, cleaning and maintenance of protective clothing and equipment

BS EN 27243:1994 Hot environments. Estimation of the heat stress on working man, based on the WBGT-index (wet bulb globe temperature)
ISO 12894:2001 Ergonomics of the thermal environment Medical supervision of individuals exposed to extreme hot or cold environments
BS EN 563:1994 Safety of machinery. Temperatures of touchable surfaces. Ergonomics data to establish temperature limit values for hot surfaces
BS EN 27726:1994 Thermal environments. Instruments and methods for measuring physical quantities
BS EN 28996:1994 Ergonomics. Determination of metabolic heat production
BS EN ISO 7730:2005 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
BS 7915:1998 Ergonomics of the thermal environment. Guide to design and evaluation of working practices for cold indoor environments
BS ISO 10551:1995 Ergonomics of the thermal environment. Assessment of the influence of the thermal environment using subjective judgement scales
BS EN 12515:1997 Hot environments. Analytical determination and interpretation of thermal stress using calculation of required sweat rate
BS ISO 9920 : 1995 AMD 15269 ERGONOMICS OF THE THERMAL ENVIRONMENT - ESTIMATION OF THE THERMAL INSULATION AND EVAPORATIVE RESISTANCE OF A CLOTHING ENSEMBLE
ISO 9886:2004 Ergonomics Evaluation of thermal strain by physiological measurements
BS EN 143:2000 Respiratory protective devices. Particle filters. Requirements, testing, marking
ISO 13731:2001 Ergonomics of the thermal environment Vocabulary and symbols
BS ISO 11399 : 1995 AMD 13444 ERGONOMICS OF THE THERMAL ENVIRONMENT - PRINCIPLES AND APPLICATION OF RELEVANT INTERNATIONAL STANDARDS

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