Emergency treatment measures for leakage accident

Emergency treatment measures for leakage accidents in liquid nitrogen irrigation areas

Step 1 accident reporting: after the accident, the machine can be divided into horizontal and vertical types. The team leader on duty (including safety officer and deputy team leader) must not only organize personnel to carry out preliminary treatment, but also immediately understand the preliminary situation of the accident and report to the plant, dispatching room and relevant departments of the company for alarm; Report the type, time and exact location of the accident, whether there are casualties or trapped conditions, and report the situation to all post personnel of the plant

step 2 handling of on-the-job personnel after an accident: the day shift leader (or the plant attendant) immediately organizes all personnel who can be dispatched to the accident site for relevant handling after quickly completing self-protection (correctly wearing air respirators): establish a temporary rescue team; First, if the safety conditions permit, the injured and trapped personnel shall be given emergency rescue off the scene; Cut off the leakage source timely and accurately, dilute the leakage point with steam or fire water, and prevent liquid nitrogen suffocation and frostbite during the treatment process; If the leakage source cannot be cut off, it is judged that the data measured by using this condition is helpful to identify the problems between the actual experiment and the system. Therefore, after the tank position, quickly close the valve of the corresponding tank, check and close the connecting valve between the accident tank and the adjacent tank, and organize the post personnel to change the relevant process, mainly cutting off the feed source, stopping the output operation, avoiding and delaying the leakage of liquid nitrogen in the tank, so as to prevent further expansion of the situation; If the site does not meet the safety conditions for saving people and opening and closing valves, it will be abandoned (the plant management personnel will speed up the request for support from the fire department)

step 3: the handling personnel at the scene of the accident should strengthen the monitoring and handling work at the scene of the accident, prevent the expansion of the accident and casualties, and report the progress of the accident at any time

1) emergency safety evacuation around the accident site and facilities:

in the event of a major leakage accident, the internal personnel of the company or the surrounding residents or personnel can be evacuated to the upwind safety zone according to the degree of leakage. In the production area, wind vanes are set at the top of the main control building, the circulating water frame building, the top of the compression plant, the top of the finished product tank and other parts. In addition, the direction can be identified by using flags, chimneys, high-altitude steam and air swaying objects. Employees should develop the habit of holding key technologies to observe the wind direction at work every day, master the change of the wind direction of the day, and can correctly judge and respond in time in case of an accident

2) isolation measures in dangerous areas:

the on-site warning group immediately rushed to the fire and explosion site, and immediately isolated the accident site to prevent 5 The exposed moving parts of the instrument should be cleaned regularly with gasoline. Irrelevant personnel and vehicles should enter the scene of fire and explosion, and help rescue personnel

3) accident site monitoring, rescue and control measures:

after arriving at the scene, work with the unit in which the accident occurred to find out the location and scope of the leakage, and make instructions to reduce production or stop locally or completely according to whether it can be controlled; After the fire brigade and gas prevention station of the safety and environment department arrive at the scene of the accident, the fire and gas prevention personnel should wear protective equipment, first find out whether there are injured and poisoned people on the scene, and remove the injured and poisoned people from the scene as soon as possible, and send the serious ones to the hospital for rescue as soon as possible; After arriving at the site, the security section of the safety and environment department shall be responsible for public security and traffic command, set posts around the accident site, divide dangerous restricted areas, and strengthen vigilance and patrol inspection. When chemical substances leak and spread, and dangerous disasters endanger the safety of people outside the plant, relevant personnel shall be quickly organized to assist surrounding units and passers-by outside the plant to evacuate to the upwind safety zone; After the rescue and repair team arrives at the scene, the equipment shall be repaired quickly according to the repair instructions issued by the headquarters, and the accident shall be controlled to prevent the expansion of the accident

4) on site rescue and treatment of the injured:

after arriving at the scene of the accident, the medical rescue team shall cooperate with the fire brigade of the safety and environment department and the gas prevention station to rescue the injured and poisoned people immediately. For the poisoned people, corresponding first-aid measures shall be taken in time according to the poisoning symptoms, the injured people shall be cleaned and bandaged or given oxygen first aid, and the seriously injured people shall be sent to the hospital for treatment in time

5) accident site protection measures:

strictly protect the accident site. If it is necessary to move the objects on the site because of rescuing personnel and preventing the expansion of the accident, it should make signs, take photos, videos, drawings and other methods to record the original appearance of the accident site in detail, and properly store important traces and physical evidence on the site for the relevant departments to investigate the accident