What type of material should personnel NOT wear during repair party activities?

During repair party activities, safety is of paramount importance, and the choice of clothing material can significantly impact personnel's well-being. Polyester double knit is not suitable for these activities because it is a synthetic material that can melt when exposed to high heat or flames. This characteristic poses a risk of severe burns if a fire were to occur during repair operations.

In contrast, natural fibers such as cotton and wool are generally better choices because they tend to be more breathable and do not melt or stick to the skin when exposed to heat. Cotton provides comfort and is less likely to cause injury in emergencies, while wool offers better insulation and can retain warmth even when wet. Gabardine, being a tightly woven fabric, may be more durable but still poses less risk than polyester double knit in terms of heat exposure. Thus, the avoidance of polyester double knit ensures a higher level of safety for personnel involved in repair work.