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.
现象：1吨燃气锅炉缺水时，水位表内水位低于极限水位而不可见，水位报警器发出低水位报警，铃响灯亮，低水位联锁装置使鼓风机、引风机等停业运行;锅炉排烟温度升高，缺水严重时，炉顶产焦湖味，从炉门可看到烧红的水冷壁管，炉管变形甚至爆管，可听到爆破声，蒸汽和烟气从炉门看火门喷出。
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.
处理：判断为严重缺水时，应紧急停炉，严重缺水锅炉严禁向锅炉进水。立即停止供给燃料，停止鼓风减弱引风，将炉排前部煤扒出炉外，将炉排开关最大，使燃烧快速落入渣斗，用水浇灭，炉火熄灭后，停止引风，开启灰门、炉门促使加速冷却。
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.
现象：汽压急剧上升，超过许可工作压力，压力表指针超过“红线”，安全阀动作后，压力仍在升高，发出超压报警信号，蒸汽温度升高而蒸汽流量减少。
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.
处理：迅速减弱燃烧，手动开启安全阀或放空阀，加大给水、加大排污(此时要注意保持锅炉正常水位)，降低锅水温度从而降低锅炉汽包压力。
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.
现象：水冷壁管爆破可听到明显的爆破声或喷气声，炉膛由负压燃烧变为止压燃烧，并且有炉烟和蒸汽从看火门，炉门等不严密处喷出，虽给水量增大，但正常水位难维持且气压降低，给水量不正常地大于蒸汽量，排烟温度降低，烟囱冒白烟，炉膛温度降低，甚至熄灭，锅炉底部有水流出。
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.
处理：炉管破裂不严重且能保持水位，事故不至扩大时，可短时间降低负荷运行，严重爆管且水位无法维持，必须紧急停炉。但引风不应停止，还应继续上水，降低管壁温度。如：因缺水而管壁过热，而爆管时，应紧急停炉，严禁向锅炉给水，尽快撤出炉内余火，降低炉膛温度，减少锅炉过热程度。
