Phenomenon: when the boiler water shortage, water table level is lower than the limit water level and not visible, water alarm low water level alarm, ring lights, low water level interlock fan and induced draft fan out of business; Boiler exhaust temperature, when the severe water shortage, top JiaoHu flavor, can be seen from the oven door red-hot water wall tube, furnace tube deformation even tube, can be heard up to, steam and flue gas from the oven door fire door.
現象：1噸燃氣鍋爐缺水時，水位表內水位低于極限水位而不可見，水位報警器發出低水位報警，鈴響燈亮，低水位聯鎖裝置使鼓風機、引風機等停業運行;鍋爐排煙溫度升高，缺水嚴重時，爐頂產焦湖味，從爐門可看到燒紅的水冷壁管，爐管變形甚至爆管，可聽到爆破聲，蒸汽和煙氣從爐門看火門噴出。
Treatment: when it is severe water shortage, the boiler should be stopped. Immediately stop the supply of fuel, weakened stop blowing wind, will pick out the front of the fire grate coal, will be grate switch is biggest, that burn quickly fell into slag, doused with water, after the fire goes out, to stop the wind, open the grey door, door to promote accelerated cooling.
處理：判斷為嚴重缺水時，應緊急停爐，嚴重缺水鍋爐嚴禁向鍋爐進水。立即停止供給燃料，停止鼓風減弱引風，將爐排前部煤扒出爐外，將爐排開關最大，使燃燒快速落入渣斗，用水澆滅，爐火熄滅后，停止引風，開啟灰門、爐門促使加速冷卻。
Phenomenon: a sharp rise in the steam pressure, more than work pressure, pressure gauge pointer over "red line", relief valve, the pressure is still on the rise, a overpressure alarm signals, reduce the steam temperature and steam flow.
現象：汽壓急劇上升，超過許可工作壓力，壓力表指針超過“紅線”，安全閥動作后，壓力仍在升高，發出超壓報警信號，蒸汽溫度升高而蒸汽流量減少。
Processing: fast burning, manually open the relief valve or vent valve, better water supply, increase the drainage (at this point we must keep the normal boiler water level), lower the temperature in the pot of water to reduce the boiler steam drum pressure.
處理：迅速減弱燃燒，手動開啟安全閥或放空閥，加大給水、加大排污(此時要注意保持鍋爐正常水位)，降低鍋水溫度從而降低鍋爐汽包壓力。
Phenomenon: a sharp rise in the steam pressure, more than work pressure, pressure gauge pointer over "red line", relief valve, the pressure is still on the rise, a overpressure alarm signals, reduce the steam temperature and steam flow.
現象：水冷壁管爆破可聽到明顯的爆破聲或噴氣聲，爐膛由負壓燃燒變為止壓燃燒，并且有爐煙和蒸汽從看火門，爐門等不嚴密處噴出，雖給水量增大，但正常水位難維持且氣壓降低，給水量不正常地大于蒸汽量，排煙溫度降低，煙囪冒白煙，爐膛溫度降低，甚至熄滅，鍋爐底部有水流出。
Processing: fast burning, manually open the relief valve or vent valve, better water supply, increase the drainage (at this point we must keep the normal boiler water level), lower the temperature in the pot of water to reduce the boiler steam drum pressure.
處理：爐管破裂不嚴重且能保持水位，事故不至擴大時，可短時間降低負荷運行，嚴重爆管且水位無法維持，必須緊急停爐。但引風不應停止，還應繼續上水，降低管壁溫度。如：因缺水而管壁過熱，而爆管時，應緊急停爐，嚴禁向鍋爐給水，盡快撤出爐內余火，降低爐膛溫度，減少鍋爐過熱程度。
