Abstract: A system and method for cleaning of heat exchanger tubes including an assembly, an indexer, and a communication device provided with specialized software and programming. The indexer includes orthogonally arranged first and second arms. A trolley and sensors are provided on the indexer arms. One or more lances are provided on the trolley to deliver water jets into the openings. Sensors measure displacement as the trolley is moved relative to the heat exchanger's face plate. An operator controls the system from a distance away using the communication device. During setup, the pattern of the face plate is learned and mapped utilizing information from the sensors as one of the inputs. This information is utilized to help navigate the face plate during a subsequent cleaning operation. A kit for retrofitting existing X-Y indexers is also disclosed.

Abstract: The present invention pertains to a composite package system that provides sufficient protection and containment of eight explosive devices that contain 33 grams each (264 grams total) of RDX explosive or the equivalent thereof, such as HMX, HNS, etc., to qualify for a U.S. Department of Transportation (DOT) classification of 1.4S. The composite package system of this invention comprises the combination of a prior art corrugated paper box in a wooden crate that meets DOT 4C1 requirements and that is lined with cement-fiber material.

Abstract: A circuit having a variable voltage source and a comparator with feedback capability detects high-speed input pulses of positive and negative polarities relative to selected voltage thresholds. The circuit also stretches and displays the detected pulses utilizing pulse stretching and LED circuitry.