1. Tianjin suspects that the problem of ammonia cylinder inventory leakage also exists. Air tightness test shall be carried out for ammonia stock of all cylinders. Zhao Yiwei, Liang 2008-07-04
2. There may be a leaking bottle in the ammonia gas cylinder at the customer's site in Jingao. Tianjin Liquid Air arranges vehicles, pulls back the customer's existing ammonia cylinders and replaces them with stock cylinders that have passed the air tightness test. Tongling, July 4, 2008
2. A Jing said that the ammonia bottle at the scene may also be a leaking bottle. Tianjin Aerospace arranged vehicles to return to the existing customer ammonia cylinders and replace them with stock cylinders after air tightness test. Yuling 2008-07-04
The audit of Collide production line in June found that some problems have not been solved (see appendix for details). Improve the problems found in the audit and strengthen the process supervision and management of the production process. Zhao Yiwei, Ji, Zhang Lin from now on.
3. The audit of Kelide production line in June found some unresolved problems (see appendix). Improve the problems found in the audit and strengthen the process supervision and management of the production process. Zhao Yiwei, including Zhang Yanqiu and Zhang Lin, has since
4. There are weak links in the detection of ammonia gas tightness of finished steel cylinders. From that day on, NH3 cylinders supplying liquid air must be stored for at least one month; A month later, the leakage inspection will be carried out again, and the goods can be released after passing the inspection. Ji, Zhang Lin from now on
4. The ammonia gas cylinder has completed the detection of the weak sealing link. From that day on, the supplied empty cylinders must remain static for at least one month after NH3 storage or be rechecked for more than one month after leakage. Only after passing the inspection can they be released for shipment. From then on, there were Zhang Yanqiu and Zhang Lin.
5. As above, in view of the above measures, Kelide is required to record the process within one working day, including: filling date, warehousing date, delivery date, leak detection result, inspector's signature, etc. The record form is regularly sent to the quality department of liquid air electronic gas products for supervision. Ji and Zhang Lin 2008-07-07
5. As mentioned in the article on mercury measures, it is required to make a working day process log table, including: filling date, warehousing date, arrival date, leak detection result, detection signature, and so on. The log table of air is regularly sent to the electronic gas product quality supervision department. Zhang Lin 2008-07-07
6. Because the cylinder head is too small, it will generate friction with the cylinder valve, which is easy to cause false opening. In order to further strengthen the protection of the cylinder valve, according to the suggestion of Kelide Company, the handwheel is fixed with steel wire to ensure that the valve will not open by mistake due to unexpected external force. Zhao Yiwei and Ji Henceforth
6. Because the cylinder head is too small, it may cause mistakes when it rubs against the bottle valve. In order to further strengthen the protection of cylinder valve, according to Clide's proposal, a steel wire round opponent is used to ensure that the valve will not open due to accidental improper force. Zhao Yiwei, including Yan Qiuyue, has since
7. ibid. In order to verify the hypothesis of the cause of the accident, whether the top of the bottle cap is in contact with the valve when tightening is calculated by the contours of the bottle cap and the valve. Ji 2008-07- 1 1
7. ibid. In order to verify the hypothesis of the cause of the accident, the Jin Xuan of the contact between the top of the bottle cap and the valve was calculated through the sides of the bottle cap and the valve. Yan Qiu 2008-07- 1 1
8.Collide still uses the method of horizontal placement when transporting cylinders. According to the ordering information, Collide expects to make the next delivery around July 20th, and requires that ammonia bottles be transported by pallets from this delivery. Zhao Yiwei 2008-07-20
8. Clide sometimes still uses horizontal mode when transporting cylinders. According to the ordering information, Mercury is expected to make the next delivery around July 20th, and the delivery requires that ammonia bottles be transported by pallet from the beginning. Zhao Yiwei 2008-07-20
9.Collide and the consignor may encounter abnormal conditions that are not conducive to transportation, resulting in the cylinders colliding with each other and being worn or damaged. During the emergency measures, after each delivery, GPS should provide the transportation route map; If it is necessary to carry out handover transportation at Tianjin border, it is also necessary to provide handover point information and the qualification of entrusting transporters to transport dangerous chemicals. Zhao Yiwei has since
9. In the transportation and traffic entrusted by Clide, there may be abnormal conditions on the road surface that are not conducive to transportation, resulting in mutual collision and cylinder wear or damage. During the emergency measures, Mercury Company should provide the transportation route map provided by GPS after each service is completed. If it is necessary to transfer in the local transportation department, it must also provide the intersection information and entrust a transportation party with the qualification of transporting dangerous chemicals. Zhao Yiwei has since
8. Medium and medium term. Long-term action
Remember the fact, the solution, the responsibility for action. date
1. Due to quality problems, there are micro-leaks in domestic valves. Collide replaced all ammonia cylinder valves for liquid air with Rotarex 300 valves to ensure valve quality. Zhao Yiwei 2008- 10
1. Due to quality problems, domestic valves have micro-leakage problems. Clide replaced all valves with Rotarex 300 used on the air ammonia bottle, and the quality of the valves was guaranteed. Zhao Yiwei 2008- 10
2. Because the cylinder head is too small, the friction between the inner wall and the cylinder valve may cause false opening. Collide will process enough large-head bottle caps to replace all existing liquid ammonia bottle caps to prevent the inner wall from rubbing against the bottle valve. Zhao Yiwei 2008-09
2. Because the cylinder head is too small, the bottle valve rubs against the inner wall, which may cause errors. Clide will handle enough bulk bottle caps to replace all existing empty caps of liquid ammonia tanks to prevent friction and flat wall. Zhao Yiwei 2008-09
3.Collide still uses the method of horizontal placement when transporting cylinders. That is, before the next delivery, the company must make 8- 10 pallets and check the quality with liquid air. Zhao Yiwei 2008-07
3. Clide sometimes still uses horizontal mode when transporting cylinders. In other words, Kelide Company must produce delivery pallets before the next 8- 10 months and check the air quality. Zhao Yiwei 2008-07
4. The shoulders of ammonia cylinders fall off. In order to ensure the quality of the new gas cylinders purchased by the company, Kelide Company will formulate the "New Gas Cylinder Inspection and Acceptance Procedure" according to its own actual situation this month. Zhao Yiwei and Zhang Lin 2008-07
4. Ammonia bottles and cans fall on one shoulder. In order to ensure the quality standard of the purchased new gas cylinders, Mercury Company will "accept the new gas cylinder testing procedure" according to its actual production situation within this month. Zhao Yiwei, Zhang Lin 2008-07
5. When using ammonia gas, customers in Beijing Olympic Games also have unsafe misoperation. Contact customers, provide training materials related to safety operation specifications for gas exchange of special gas cylinders and other related training matters. Gu 2008-07
5. The crystal is using ammonia, which is also unsafe and wrong in Australia. Contact customers, provide safety operation training materials related to standardized ventilation of special gas cylinders, and train other related matters. Sent by Lab Hill on July 2008.
9.conclusion
(1) See Article 6 for the cause analysis of the accident. The main reasons are: 1, friction between the bottle cap and the valve; 2. It was not placed upright during transportation.
(1) The analysis of the cause of the accident is shown in Article 6. The main reasons are: 1, friction between the bottle cap and the valve, and 2, failure to stand upright during transportation.
(2) All the improvement measures in Articles 7 and 8 shall be discussed and agreed by both parties, and shall be jointly implemented by both parties. At the same time, liquid air will ask the other party to provide evidence according to the improvement plan of Kelide Company to show the improvement effect.
(2) All the improvement measures specified in Articles 7 and 8 shall be discussed and agreed by both parties of air and Keli De Company and jointly implemented. At the same time, follow up the improvement plan of Air Kelide Company and ask the other party to provide evidence to show the improvement results.
(3) All emergency measures in Article 7 shall be implemented for at least 6 months from the same day, so as to ensure that the long-term preventive measures in Article 8 can still be strictly monitored and managed before implementation and during the implementation and testing stage.
(3) The emergency measures in Clause 7 shall be implemented for at least six months from the date of full implementation, so as to ensure that the long-term preventive measures in Clause 8 are still strictly monitored and managed in the experimental stage before implementation and during implementation.
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