[Q&A Question 111] 2016.08.09
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【Q&A Question 111】August 09, 2016: What precautions should be taken when using a temporary steam belt for purging on the pipeline drain during maintenance? The answer key will be available after responding; scoring is based on answering the key points. Make sure the belt is properly connected, and verify that the drain is unobstructed. If the drain is blocked, be careful when using a wire to clear it; do not open the drain valve too wide.
This post was last edited by zdl1966 on 2016-8-9 07:10. Temporary pipelines must be securely fixed during purging, and the valves should be opened slowly when starting to discharge fluid.
Drain the condensate to prevent the belt from breaking and to avoid injuries; pay attention to safety. Turn on the steam slowly to prevent water hammer
The back route cannot withstand pressure; rubber hoses are not fatigue-resistant and tend to burst. The rubber hose should also be tied securely, or a quick connector should be used
Make sure the belt is properly connected, and verify that the drain is unobstructed. If the drain is blocked, be careful when using a wire to clear it; do not open the drain valve too wide.
During the purging process, it is necessary to adhere to the \"five no’s\": no leakage, no explosion, no combustion, no poisoning, and no water hammer
Ensure that the hose is firmly connected to the Dowling. Step on it while draining hydrogen gas to prevent the hose from flailing around. Use it in such a way as to avoid burns caused by high temperatures of the hose
1. The steam belt needs to be tightened； 2. Set up warning lines at the posterior access site, with someone stationed there to keep watch ； 3. Prepare a plan
The interface should be secure, the voltage increase should be gradual, and attention should be paid to the drainage of condensate
Care should be taken to prevent water hammer and scalding accidents; it is recommended to use rigid connections