Abstract: A nozzle plug (22) for blocking a nozzle (46) in a nuclear steam generator (16) is improved by the addition of hinges (40a, 40b) which allow the nozzle plug (22) to be inserted into the steam generator (16) through an access port (52) of substantially smaller diameter than the nozzle (46). A recess (54) is provided in one of the semi-circular plates (28) allowing the plates to nest, further reducing the necessary size of the access port (46).

Abstract: A plug means for effecting a temporary blockage of a passage through which liquid is designed to flow. The subject plug means includes a frame means capable of being readily disassembled and embodying in the assembled state dimensions corresponding to the cross-sectional dimensions of the passage in which the plug means is to be employed, and inflatable means mountable on the frame means and co-operable therewith for providing a liquid tight seal in the passage. The frame means comprises a frame member including a plurality of readily interconnectable sections of plate, the latter each possessing a high strength-to-weight ratio; interconnecting means for effecting the interconnection of the plurality of plate sections; and securing means cooperable with means provided in the side walls of the passage for securing the frame means and thereby the plug means in the passage in blocking relation thereto.

Abstract: A lid for a plastic container, which container is particularly useful for containing paint, includes a sealing flange which engages the inner surface of a rim defining the opening of the container. The sealing flange is held in engagement with the rim by a plurality of locking tabs which are integral with the lid and fit beneath an inwardly projecting lip on the flange. The flange has a generally convex configuration while the rim has a concave configuration so that the lid is prevented from moving axially out of or into the container once it is locked in place by the tabs.