Abstract: A subtended communication network includes a first node servicing a plurality of first subscribers and having a subtend module and a corresponding first identifier. The first node can store a second identifier corresponding to a second node coupled to the subtend module. The subtended communication network also includes a second node servicing a plurality of second subscribers and having a network interface module and corresponding second identifier. The second node can store the first identifier corresponding to the first node coupled to the network interface module. The subtended communication network further includes a management module coupled to the first node and the second node. The management module can determine a subtending relationship between the first node and the second node by retrieving the first identifier from the second node and the second identifier from the first node.

Abstract: An integrated data management system for compiling information concerning a plurality of nuclear power plant components includes a distributed database for maintaining the information over a lifetime of each of the nuclear power plant components, data entry terminals for entering the information in the distributed database, and data retrieval terminals for retrieving the information from the distributed database. The database is distributed by a wide-area network interconnecting the data entry and data retrieval terminals with distributed workstations which access the information.

Abstract: An automated system for determining positions of a plurality of nuclear fuel assemblies organized in an array within a housing of a nuclear power plant includes a radiation hardened, underwater camera for inputting images of the nuclear fuel assemblies with respect to each other or with respect to a baffle wall of a nuclear reactor core, a digital signal processor for generating a second digitized image including a plurality of pixel elements of the nuclear fuel assemblies from the first image, and a workstation for determining the positions of the nuclear fuel assemblies with respect to the baffle wall from counts of the pixel elements.

Abstract: A self locking device that is used with a overhead, horizontally pivoted, door in combination with a power operated door opener is disclosed. The device comprises a latch mechanism that is activated by the movement of the door arm and a striker that receives a locking dog. A door arm, which is a part of the door opener, is the member that transfers the movement of the power operated door opener to the door. When the door arm is closing the door, the locking dog is free to interface with a striker. A striker mounted on the header of the door frame receives the locking dog and keeps the door from being forced open which can be done by breaking the door opener mechanism. The latching dog is released by the door opener mechanism with the reverse movement of the door arm and therefore the door is moved to its open position.