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Prevent the accumulation of static electricity

Prevent the accumulation of static electricity

Issue Time:2021-08-02

Prevent the accumulation of static electricity

Control the flow rate and flow rate. Strictly implement the initial flow rate lm/s and the maximum flow rate and flow rate of the operation.

 

1.1 The flow rate requirements of the inlet and outlet of the receiving cargo container

a. For horizontal inlets, the liquid level of the cargo must be 0.6m below the top of the inlet (no liquid disturbance and turbulence) before the speed can be increased.

b. The downward-curved inlet should meet the requirement that the distance from the lower port of the pipe side to the surface of the cargo has exceeded twice the distance of the inlet pipe diameter before the speed can be increased.

c. For the upward-curved inlet, the nozzle must meet the distance of 1.2m or more from the nozzle to the liquid level of the cargo in order to increase the speed.

 

1.2 Floating-top cargo tanks should maintain a flow rate of lm/s until the top of the tank starts to float (including internal floating cargo tanks with fixed tank tops) in order to increase the speed to prevent rapid turbulent static accumulation.


1.3 When sampling hazardous chemicals, ensure that the flow rate does not exceed lm/s, and prevent the liquid from splashing and accumulating static electricity.


1.4 When a dangerous liquefied product ship arrives at the port or has just finished loading and unloading the cargo, the container should stand for 30 minutes before sampling, temperature measurement, and rule measurement operations can be carried out.


1.5 During the sampling, measurement and temperature measurement of liquid hazardous chemicals, the speed of action shall be controlled, and the speed of lifting and lowering the instrument shall not be greater than 0.5m/s


It is recommended to use Personal Electrostatic Eliminating Alarm.