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UN HAZARD CLASSIFICATION CODES (HCC)

UN HAZARD CLASSIFICATION CODES (HCC). C4 Slide 1. Introduction. Hazard Division. Compatibility Groups. Hazard Classification Codes. Denotes the type of hazard to be expected. Denotes what can be stored together to minimise risk. Facilitates safer storage and transportation.

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UN HAZARD CLASSIFICATION CODES (HCC)

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  1. UN HAZARD CLASSIFICATION CODES (HCC) C4 Slide 1

  2. Introduction Hazard Division Compatibility Groups Hazard Classification Codes Denotes the type of hazard to be expected Denotes what can be stored together to minimise risk Facilitates safer storage and transportation

  3. Introduction to Hazard Divisions (HD) The Hazard Division here is 1.1 It is also shown with Compatibility Group, here it is ‘D’ Note that ammunition and its containers generally has many other types of markings as well.

  4. Class 1 Hazard Divisions (HD)

  5. Hazard Division 1.1

  6. Hazard Division 1.2

  7. Hazard Division 1.3

  8. Hazard Division 1.4

  9. Hazard Division 1.5

  10. Hazard Division 1.6

  11. Fire Divisions

  12. Compatibility Groups (CG) • Identify commonalities between ammunition stores • More importantly – identify incompatible stores • The CG is added to the HD to form the complete • HAZARD CLASSIFICAITON CODE (HCC) • The practical use of these is when applying the ‘Mixing Rules’

  13. CG – Worked Example Compatibility Group B: Articles containing a primary explosive substance and not containing two or more effective protective features Example: Detonators

  14. CG B – Detonators

  15. CG – Worked Example Compatibility Group H: Article containing both explosive substance and white phosphorus Example: Incendiary Grenades.

  16. CG H – Incendiary Grenades

  17. CG – Worked Example Compatibility Group S: Substance or article so packed or designed that any hazardous effects arising from accidental functioning are confined within the package Example: Small Arms Ammunition (Ball)

  18. CG S – Small Arms Ammunition

  19. CG – Worked Example Compatibility Groups E and F: Question - What is the difference?

  20. What are the “Mixing Rules” • Compatibility Groups – identify types of stock • Theoretical ideal – store each type individually • Practically – this is not likely to be viable • Need to compromise: mix suitable groups • Aim – to reduce the risk / to improve safety • Mixing Rules state what can be stored with what

  21. Mixing Rules Table

  22. Mixing Rules for Field Storage

  23. Mixing Rules Table – Field Storage

  24. Questions? C4 Slide 24

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