DIESEL ENGINE EXHAUST SYSTEM DRAWING FS 459 The exhaust systems for the diesel engines consist of vertically mounted spark-proof heat exchanger silencers to reduce objectionable noises and to act as a steam supply to the distillation units, equipped with gauges, feed water regulator, auxiliary electric heater, necessary valves, fittings and pipe. The gases are exhausted out of silencer through a butterfly valve V-31, and flexible pipe through the roof, to isolate the system from engine vibration and eliminate any stresses caused by thermic expansion and differential settlement. The exhaust system will require periodic (once a month) inspection and removal of carbon accumulations. In some instances it may be neces- sary to clean the system oftener than once a month, should the exhaust temperatures exceed 550°F. Observe the exhaust; smoky exhaust indicates poor operation and incorrect adjustments, The importance of keeping the carbon formations to a minimum cannot be over-emphasized. A periodic check should be made of all silencer piping support nuts, Make sure these nuts are drawn up tight. AUXILIARY EXHAUST SYSTEM In addition to the regular exhaust system there is at Runit, the Aomon Group, and Engebi, an exhaust system consisting of an outlet on the main exhaust tee below the silencer, through a butterfly valve V-30 and flexible pipe to a 12 inch header inside of the plant that exhausts from a 24 inch electrically operated valve V-32 through the wall located just above floor and to right of plant entrance. 3-11