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Guidance

Management of health and safety in defence - chapter 41: heat illness prevention (JSP 375, volume 1)

Provides the guidance and best practice that will assist the user to comply management of health and safety in defence.

Updates to this page

From:
Ministry of Defence
Published:
29 October 2020
Last updated:
9 May 2025
Show all updates

  1. Updated 'Heat illness prevention' and 'Annex A: Commander's Guide to Heat Illness Prevention'.

  2. Updated 'Heat illness prevention' and 'Annex A: Commander's Guide to Heat Illness Prevention'.

  3. Updated 'Heat illness prevention (V1.5 June 2024)' and Annexes A-F.

  4. Updated: 'Heat illness prevention (V1.4 April 2023)' and 'Annex A: Commanders' guide to preventing heat illness'.

  5. Updated Annex A: Commanders' guide to preventing heat illness.

  6. Updated 'Heat illness prevention' to version 1.3 (August 2022).

  7. Updated Heat illness prevention (V1.2 August 2022) and added Annex H: basic guidance for all personnel during extreme heat.

  8. Added updates to JSP 375 - Heat illness prevention (V1.1 January 2022) and Annex's A to G.

  9. Updated Annex C: work/rest tables.

  10. Updated: Annex A, Commanders' guide to preventing heat illness.

  11. First published.

Documents

Heat illness prevention (V1.8 May 2025)

PDF, 536 KB, 25 pages

Annex A: Commander's Guide to Heat Illness Prevention

Ref: JSP 375, Volume 1, Chapter 41, Annex A

PDF, 792 KB, 26 pages

Annex B: individual's guide to heat illness

Ref: JSP 375, Volume 1, Chapter 41, Annex B

PDF, 1.97 MB, 2 pages

Annex C: work/rest tables and an aide memoire (summary guidance) for using the QuestTemp 34 wet bulb globe temperature (WBGT) monitor

PDF, 3.68 MB, 20 pages

Annex D: procurement, calibration and repair of the QT34 wet bulb globe temperature (WBGT) monitor and associated training

Ref: JSP 375, Volume 1, Chapter 41, Annex D

PDF, 148 KB, 3 pages

Annex E: heat acclimatisation for deployment to hot climates

Ref: JSP 375, Volume 1, Chapter 41, Annex E

PDF, 110 KB, 3 pages

Annex F: hydration guidance

Ref: JSP 375, Volume 1, Chapter 41, Annex F

PDF, 135 KB, 3 pages

Annex G: examples of policy compliance

Ref: JSP 375, Volume 1, Chapter 41, Annex G

PDF, 356 KB, 9 pages

Annex H: basic guidance for all personnel during extreme heat

Ref: Ref: JSP 375, Volume 1, Chapter 41, Annex H

PDF, 21.1 KB, 1 page

Details

If you require any of the PDF’s on this page in an alternative format then please contact: DDC-MODInternet@mod.gov.uk.

Read more related chapters from JSP 375 on the Management of health and safety in defence: arrangements (JSP 375 volume 1) page.

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