Wide Area Collective Protection

The team of Toyon and HDT Global propose to develop technologies to enable achieving Collection Protection of the scale of a city block. In Phase I, we successfully demonstrated that a system comprising retrofit air purification, temporary shelters and mass-efficient sealant can create this environment within a two-day setup period. HDT developed conceptual designs for a HEPA-based system capable of supplying 100,000 CFM and fit on a mobile trailer. To meet Class II shelter requirements, an analysis of 2nd-world construction identified the need to reduce the overall leakage area by 80% or more. Environmentally-robust polyurea foams were identified as the best means to tighten the envelope within a two-day period. In Phase II, we will assemble and demonstrate a prototype system system, including the components identified in Phase I (mobile air purification unit, polyurea sealant material system) optimized for large-scale, field-expedient deployment. Formulations of polyurea foam combined with fabric sheeting and real-world substrates will be developed into standard assemblies. Final form articles of the sealant system applied to a range of representative building envelope features will be evaluated in functional and environmental performance trials. The envisioned customer primarily involves JPEO CBD and the armed services anti-terrorism force protection construction units.