Abstract
This paper introduces the order and operation performance of 600 MW supercritical W-flame boiler in China and Vietnam. The investigation and survey results about 600 mw supercritical W-flame boiler water wall cracking are indicated. The reason of water wall cracking is analyzed according to the boiler operation and the main reason is the furnace thermal deviation in horizontal direction. The paper indicated the performance and some measures to prevent the water wall cracking from design, installation and commissioning & operation in Vinh Tan 1 Power Company Limited. The fully mixing header is provided on the transitional section of the water wall, which is the most useful method to prevent the water wall cracking.
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