Technical Evaluation Report - Nato

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Technical Evaluation Report - Nato

T-4

protection in the standard combat suit is essential, as this is the only way to reduce the number of

clothing layers in the NBC protected state. Another paper dealt with a theoretical analyses of

penetration of wind into the microclimate (Sobera et al., [7]), which is relevant for NBC protection

too. This and Kaaijk and Brasser’s [40] study on chemical protection at various wind penetration

speeds and material air permeabilities lead the way to a theoretical understanding of how increasing

air permeability can be used to reduce heat stress, while keeping up required protection levels.

In all presentations, it was obvious that the scientists involved can only optimise heat stress levels

within the fixed protection requirements. As a message to the ‘protection’ people, it would be

interesting to review the protection requirements. Are they still based on the scenarios we would deal

with today? Do we need more differentiation? Emergency services may need different levels from

military personnel given their deployment.

Any differentiation would allow further optimisation of the protection-heat stress balance.

Testing on

Human subjects

Testing on

Equipment

Level 5 Large scale field trials (n>>100)

Level 4 Medium scale, controlled field trials (20

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