Abstract: Disclosed is a method for reducing embrittlement of certain materials of pressurized water reactor vessels caused by neutron flux. According to this method, "shadow shielding" is placed within the core support barrel in areas having a more benign flow environment than that of the downcomer area. This shadow shielding provides an increased neutron scattering cross section. In one example, the shadow shielding replaces segments of the core shroud plate in a manner which does not interfere with coolant flow in the vessel. The segments of the shroud plate which are replaced are those near critical regions of the vessel, typically welds. The size and shape of the shielding is determined according to plant specific requirements.

Abstract: A package for containing a preselected amount of a product in the form of a pill or the like is adapted to be converted for use as a cup for containing liquid and includes a pair of sidewalls made of paperboard which are joined together along three mutual edges thereof, the fourth mutual edges defining the top of the cup. A support flap is connected by a perforated score line along an edge of one of the sidewalls at the top of the cup and has a plastic blister bonded to one face thereof within which a pill or other product may be contained. The support flap is provided with an aperture therein registering with the interior of the blister and a frangible closure, preferably a metal foil, is secured in overlapping relationship to the aperture to prevent loss of the product prior to the time of use. Spaced fold lines in the sidewalls allow folding of the package to a compact condition for storage, and the support flap may be torn away from the top of the cup during use to allow ready access to the product.