因为QXD系列油加热器的循环管道使用时间过长，造成管道磨损，出现漏洞，

Because the circulation pipeline of QXD series oil heaters is used for too long, it causes pipeline wear and leaks, which eventually leads to oil leakage in circulation pipelines of QXD series oil heaters. <br><br><br>1. When the oil leaks, the cyclophosphamide chlorination reaction is using the equipment for temperature control. Considering that the temperature of the heat transfer oil in the pipeline is high and there is a certain pressure, the operation of the QXD series oil heater is temporarily stopped. After the oil leakage pipeline is temporarily bandaged, restart the system to ensure that the required reaction temperature can be maintained in the R1502 tank, and during the pipeline bandage, the temperature record will be changed from normal operation every (30 ± 5) minutes to every 10 minutes Record once, and resume to record the temperature every (30 ± 5) minutes after the system is in normal operation, to ensure that the temperature in the R1502 tank is effectively recorded when the system is stopped. The temperature of the pipe bandage lasts for 30 minutes, and its temperature has been decreasing. The minimum is 93.5 ℃, which does not exceed the temperature control requirements (92 ℃ -98 ℃). The reaction start time is 12:10, the end time is 15:10, and the total reaction time is 3 hours, which meets the reaction time requirements (reaction 3 hours). Therefore, it has no effect on the quality of the product. <br>2. Follow-up detection of cyclophosphamide, the quality meets the requirements, and the risks are controllable. <br>3. After the pipeline is found to be leaking, check other pipelines, there is no leakage of other pipelines. <br><br>1. Repair the leaking pipeline. <br>2. Check all the pipelines of QXD series oil heaters, and repair or replace the pipelines in question.

Because the QXD series oil heater cycle pipe use time is too long, resulting in pipe wear, loopholes, and ultimately lead to QXD series oil heater cycle pipe leakage. <br><br>1. When oil spills, the cyclophosphamide chlorination reaction is using the equipment for temperature control, taking into account the high temperature of the thermal oil in the pipeline and a certain amount of pressure, so temporarily stop the operation of the QXD series oil heater, after the repair man temporarily bandaged the oil leak pipe, restart the system to ensure that the R1502 tank can maintain the required reaction temperature, and during the pipe packing, the temperature record from normal operation (30 to 5 minutes) recorded to 10 minutes, The temperature recorded per (30-5) minutes is restored until the system is operational, ensuring that the temperature in the R1502 can is validly recorded during the system's shutdown. The pipe is bandaged for 30 minutes and its temperature has been dropping, with a minimum of 93.5 degrees C, which does not exceed the temperature control requirement (92 degrees C-98 degrees C). The reaction start time is 12:10, the end time is 15:10, the total reaction time is 3 hours, and the reaction time is met (reaction 3 hours). Therefore, there is no impact on the quality of the product.<br>2. Tracking detection of cyclophosphamide, quality in line with the requirements, risk control.<br>3. After the pipeline oil leakage is found, other pipelines are checked, and no oil leakage from other pipes.<br><br>1. Repair the leaking lines.<br>2. Check all pipes of the QXD series oil heater, repair or replace the faulty pipe.

Because the circulation pipeline of qxd series oil heater has been used for a long time, the pipeline is worn and leaks, which eventually leads to oil leakage of the circulation pipeline of qxd series oil heater.<br>1. At the time of oil leakage, cyclophosphamide chlorination reaction is using the equipment for temperature control. Considering the high temperature and certain pressure of the heat transfer oil in the pipeline, the operation of qxd series oil heater is temporarily stopped. After the repair personnel temporarily bandage the oil leakage pipeline, restart the system to ensure that the reaction temperature in r1502 tank can be maintained at the required temperature. During the pipe bandaging, the The temperature record is changed from once every (30 ± 5) minutes during normal operation to once every 10 minutes until the system recovers to once every (30 ± 5) minutes after normal operation, so as to ensure that the temperature in r1502 tank is effectively recorded during the period when the system stops operation. For 30 minutes, the temperature of the pipe has been decreasing, the minimum temperature is 93.5 ℃, which does not exceed the temperature control requirements (92 ℃ - 98 ℃). The start time of the reaction is 12:10 and the end time is 15:10. The total reaction time is 3 hours, which meets the requirements of the reaction time (3 hours). Therefore, it has no effect on the quality of products.<br>2. Track and test cyclophosphamide, the quality meets the requirements, and the risk is controllable.<br>3. After finding the oil leakage of the pipeline, check other pipelines, and there is no oil leakage of other pipelines.<br>1. Repair the leaking pipeline.<br>2. Check all pipes of qxd series oil heater and repair or replace the pipes with problems.<br>