Abstract: A ventilating radiant barrier for reducing the solar or thermal load into a home through a rood while also providing ventilation beneath the exterior of the roof to protect the roof from moisture damage. The ventilating radiant barrier includes a panel has a pair of faces, a pair of end edges and a pair of side edges extending between the end edges of the panel. A first of the faces of the panel has a spaced apart pair of perforations rows extending between the end edges of the panel. The second face of the panel has a spaced apart pair of perforations rows extending between the end edges of the panel. The perforation rows of the second face of the panel are positioned between the perforation rows of the first face of the panel.

Abstract: A method and apparatus for servicing a nuclear reactor system is disclosed whereby a reactor vessel (10) filled with radioactive water from a refueling canal (16) and associated steam generator (30) and pump units (38) may be serviced simultaneously while the reactor is out for refueling. The apparatus includes a plug unit (A) and an installation assembly (B) for inserting a plurality of plug units into reactor vessel nozzles (40). Each plug unit (A) includes a radially expandable seal rings (50, 52) and secondary seal (58) carried by a tapered portion (56) which wedges the plug unit (A) into the nozzle (40) under hydrostatic pressure. Installation assembly (B) includes a pair of telescoping units (70) having a pair of telescoping arms (72) and (74) which moves axially in opposite directions to insert plug units (A) carried at the ends thereof into diametrically opposed nozzles. A brace (120) provides a reactionary force against which the nozzles may be pulled out in the case of difficulty.