| 摘要 |
PROBLEM TO BE SOLVED: To provide a warming method capable of efficiently using the heat of driving steam to warm a block valve. SOLUTION: A downstream drain valve 16 is opened, a high-temperature steam control valve 12 is closed, and a block valve 11 is opened, and at the same time, in the case wherein the temperature inside of driving steam pipes 10 is less than a predetermined temperature, an upstream drain valve 15 is opened, and in the case wherein the temperature inside of the driving steam pipes 10 is a predetermined temperature or more, the upstream drain valve 15 is closed. COPYRIGHT: (C)2009,JPO&INPIT
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