EMP Protection for Structures Having Coal Combustion Residual Components

An EMP-protective composite structure, comprising:

• (a) at least one enclosure having walls, a ceiling, at least one ingress/egress portal and a base, each of the walls, the ceiling, the ingress/egress portal and the base including at least one blast-resistant structural panel and at least one layer of an EMP barrier comprised of CCR that provides magnetic conduction, field absorption and field reflection fully-enclosing the structural panel, the blast-resistant structural panel comprising a frame constructed of a spaced-apart frame members of a ferrous material, frame reinforcing members extending between the frame members, a cementitious layer in which the frame is embedded and an EMP absorbing mesh embedded in the cementitious layer;
• (b) an encapsulation barrier comprising an overlying layer of an impermeable cementitious material having a blast-deflecting surface defining an acute blast-deflecting angle with respect to a major plane of the base overlying the at least one enclosure;
• and
• (c) a HEMP protective door formed in the enclosure to absorb and deflect EMP.

A structural panel for use in constructing an EMP-protective composite structure, the structural panel comprising;

• (a) spaced-apart frame members of a ferrous material;
• (b) frame reinforcing members extending between and connecting the spaced-apart frame members;
• and
• (c) a cementitious layer in which the frame is embedded.

An RF filter, comprising:

• (a) an electrically-conductive pipe defining a void filled with carbon-containing materials to provide high-frequency filtering, and enclosed on both ends by end caps including openings through which extend respective electrical stress-protected bushings;
• (b) an electrically-conductive cable extending through the length of the filter;
• and
• (c) the filter adapted to be positioned to extend between an RF unshielded area through a shield to a shielded area of a facility to be protected from RF.

An RF filter, comprising:

• (a) a plurality of electrically-conductive elements defining a void filled with carbon-containing materials to provide high-frequency filtering, and enclosed on both ends by through which extend respective electrical stress-protected bushings;
• (b) an electrically-conductive cable extending through the length of each of the filter elements;
• and
• (c) the filter elements positioned in an array within an enclosure, the enclosure having a RF shield positioned within the enclosure defining on one side an RF shielded area and on another side an RF unshielded area, and through which the filter elements extend into and from an area of a facility to be protected from RF.