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WHAM6 is used to calculate pressure and velocity transients in liquid-filled piping networks. It can be applied to multiloop complex piping networks consisting of dead ends, elbows, orifices, multiple-branch tees, changes of flow passage cross section, check valves, pumps, pressurizers or tanks, and exit valves or breaks. Hydraulic losses are considered. Transients can be initiated either by closure or opening of one or more exit valves (equivalent to system ruptures) or by a prescribed gas pressure history in a pressurizer tank. Maxima of 100 legs 50 nodes per leg 2 different valves or breaks (additional ones have the properties of the second one) 4 pumps 1 pressurizer 1 case per execution. The limits of 100 legs and 50 nodes per leg are imposed by DIMENSION and DATA statements, and can be changed to accommodate other models whenever memory space is available. Applications using 244 legs, 26 nodes per leg, for the hydraulic model have been completed at EG and G. Turbine operation range is not considered because it is assumed that each pump is provided with a check valve. (ERA citation 08:020562)...Software Description: IBM360,370;CDC6600,7600; FORTRAN IV and BAL (IBM360). FORTRAN IV (CDC7600); OS/360,370 (IBM360,370), SCOPE 2.1.3 (CDC7600); 480K bytes of memory (IBM370/195), 101,000 (octal) words.