davefitz
Mechanical
- Jan 27, 2003
- 2,927
Can anyone advise the official definition of "water space" as used in the ASME code sect I PG 59.3.3 ?
Specifically, the code requires the supply of a bottom blowoff connected to the "lowest water space practicable ". IN our case we have a high pressure power boiler with a single steam drum, no mud drum, and downcomers feeding the evaporator inlet headers. The boiler vendor only supplied an intermitent blowoff connected to the steam drum, but this connection is 85 ft above the bottom of the downcomers. In my opinion, the downcomer should be included in the definition of "water space", but can anyone else confirm this interpretation.
Specifically, the code requires the supply of a bottom blowoff connected to the "lowest water space practicable ". IN our case we have a high pressure power boiler with a single steam drum, no mud drum, and downcomers feeding the evaporator inlet headers. The boiler vendor only supplied an intermitent blowoff connected to the steam drum, but this connection is 85 ft above the bottom of the downcomers. In my opinion, the downcomer should be included in the definition of "water space", but can anyone else confirm this interpretation.