Testing should adopt special measuring instruments which are qualified or measuring devices which meet the current national standards (flow measurement throttling devices). The air leakage tube test device can adopt the air duct type or the air chamber type. The orifice plate is used as metering element in the air duct type test device, and the nozzle is used as metering element in the air chamber type test device. The final measured value and the design given value should not be less than 10% qualified.

　　濟南廚房排煙

　　Kitchen smoke exhaust in Jinan

　　（1）應設置在該排煙系統高排煙口的上部，并應設在用耐火極限不小于2.5h的隔墻隔開的機房內，濟南廚房排煙機房的門應采用耐火極限不低于0.6h的防火門。

　　(1) The upper part of the highest exhaust outlet of the smoke exhaust system should be set in the machine room partitioned by partitions whose fire resistance limit is not less than 2.5 hours, and the door of the smoke exhaust machine room of Jinan kitchen should be fireproof door whose fire resistance limit is not less than 0.6 hours.

　　（2）為了方便維修，排煙罩外殼墻壁或設備的距離不應小于60cm.

　　(2) In order to facilitate maintenance, the distance from the hood shell to the wall or equipment should not be less than 60 cm.

　　（3）排煙罩與排煙道的連接方式應合理。實踐證明，因為排煙罩與排煙風道連接方式不正確，常常會引起風機的性能顯著下降。

　　(3) The connection mode between exhaust hood and exhaust flue should be reasonable. Practice has proved that the performance of the fan is often significantly reduced because of the incorrect connection between the exhaust hood and the exhaust duct.

　　（4）排煙罩與排煙口應設有連鎖裝置。當任何一個排煙口開啟時，濟南廚房排煙即能自動啟動。即一經報警，確認發牛火災時，由手動或由消防控制室遙控開啟排煙口，則排煙罩立即投入運行，同時立即關閉著火區的通風空調系統。核查風管嚴密性試驗是否符合設計和現行施工質量驗收規范規定，若不符合要求，有無進行返修處理，處理結果是否符合規定。核查測定所使用的儀器儀表是否有檢定證書，其精度是否符合要求，各項記錄的測定日期是否在其檢定有效期內。對照施工圖紙，核對試驗項目中系統是否齊全，試驗數據是否準確、真實，簽證是否齊全。

　　(4) The smoke hood and the smoke outlet shall be equipped with interlocking devices. When any smoke outlet opens, the kitchen smoke exhaust in Jinan can start automatically. That is to say, once the alarm is given and the cattle fire is confirmed, the smoke exhaust outlet is opened manually or remotely by the fire control room, the smoke exhaust hood will be put into operation immediately, and the ventilation and air conditioning system in the fire area will be closed immediately. Firstly, check whether the air duct tightness test meets the requirements of design and current construction quality acceptance criteria. If it does not meet the requirements, whether it has been repaired or not, and whether the treatment results meet the requirements. Verify whether the instrument used in the test has a certificate of verification, whether its accuracy meets the requirements, and whether the determination date of each record is within the validity period of its verification. Comparing with the construction drawings, check whether the system in the test project is complete, whether the test data is accurate and true, and whether the visa is complete.

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　　The above contents are arranged and released by the smoke hood in Jinan. More related contents can be consulted by clicking on our official website: http://www.www.qa48.com/