Steam power plants, their design and construction . IS<* - —-- The Engineering OF BOILER PIPING. iBo/fs. sU P ^r K-I* 91- *3^ The Enoineehcng RECDETAIL OF PIPE METHOD OF CONNECTING DUPLICATE MAINS TO BOILERS. Figure 43.—Steam Piping Details at Great Northern Paper Co. SHEAFF AND JAASTED, ENGINEERS. STEAM POWER PLANTS. 97 covering obtainable, and in making a selection the question ofdurability should be looked into fully as much as the efficiencyof the covering when new. Sometimes the pipe covering is madepart of the piping specifications, and again a contract is m
Steam power plants, their design and construction . IS<* - —-- The Engineering OF BOILER PIPING. iBo/fs. sU P ^r K-I* 91- *3^ The Enoineehcng RECDETAIL OF PIPE METHOD OF CONNECTING DUPLICATE MAINS TO BOILERS. Figure 43.—Steam Piping Details at Great Northern Paper Co. SHEAFF AND JAASTED, ENGINEERS. STEAM POWER PLANTS. 97 covering obtainable, and in making a selection the question ofdurability should be looked into fully as much as the efficiencyof the covering when new. Sometimes the pipe covering is madepart of the piping specifications, and again a contract is made forit with a manufacturer direct. The latter arrangement is muchto be preferred. Specifications for piping.—When an engineer prepares accu-rate and complete scale drawings of the entire system of pipe-fittings, etc., the written specifications can be quite brief. Theyshould call for bids on the engineers drawings, name the lo-cality of the power house, give the time allowed to complete thework, and specify by name or make the following, if they are tobe used, and are not marked on the drawings: Steam valves;water valves; reducing valves ; back-pressure valves; steam traps;in
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