The development of an innovative low cost RHP hardening approach is proposed for Navy sites/locations. The Hardening solution ie defined in the form of an ECP, and focuses on reducing costs by having an integrated approach to the design, fabrication, installation, testing, and maintenance of the shield systems. The approach uses prefab parts as much as possible. The coat effectiveness of several concepts for shielding material will be explored, including ioesh, foils, and composites. An expert system is proposed for tailoring the design approach to unique features of the site/stations being hardened.