Moisture Barrier Field Testing Methods
topic
Field moisture barrier integrity testing uses portable hydrostatic pressure test tools applying a defined water pressure of 45 centimetres water column to moisture barrier fabric sections while observing for water penetration that indicates moisture barrier failure, supplemented by visual inspection for seam tape delamination, moisture barrier film puncture from sharp object contact, and flex cracking from repeated garment use, with positive field test results triggering retirement or moisture barrier replacement.
Role
Provides the practical in-service verification of moisture barrier integrity that laboratory bench testing provides at certification but which degrades progressively through service, with field hydrostatic testing being the most reliable method for detecting moisture barrier failures that would expose firefighters to water and steam penetration in water-involved firefighting operations where moisture barrier integrity is critical for protection.