汽嘴之上仍用压阀扣上，以保证多余的蒸汽能自由排放。
The pressure limit valve is still used to cover the steam nozzle for ensuring the surplus steam to exhaust freely.
确认燃烧物能自由排放(烟囱阀门要打开)并且锅炉中有水。
Make sure that the discharge of combustion products can take place freely (chimney lock-gates should be open) and that there is water in the boiler.
所有用于水或水溶液贮藏的贮槽应在设计和建造上确保能够自由排放和清洗。
All tanks used for storage of water or aqueous solutions should be designed and constructed to ensure that they are free draining and cleanable.
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