Sampling safety and protocols
In both life and work, there are frequent situations requiring sampling. As sampling standards and environments vary, sampling requirements vary, and some sampling is also of a professional nature. It is therefore necessary to understand the basic common sense of sampling, which avoids harm during the sampling process and ensures the accuracy of sampling and results。
When taking volatile and combustible samples, safety precautions are required to use pressure tested sampling bottles and the size of the samples should not exceed 80 per cent of the packaging. Sampling on pressurized equipment, containers, pipes should slowly open the sampling valve. Toxic, corrosive and irritant samples must be taken with protective supplies and gas masks. No contact with organic matter or oils is permitted when liquid oxygen and liquid air are extracted. The sampling should be on the side of the valve and on the upper side of the wind, which should be heavily closed after sampling. There is a need for guardianship in the case of taller or higher-risk field sampling. The roads leading to the sampling points must be open and the stairs, platforms, bars and elevation facilities must be intact and meet safety requirements. Safety instructions for sampling entering the spray sampling site must be accompanied by helmets and necessary labour supplies. When the spray sample is taken, the shooter shall not point the nozzle outside the nozzle frame, and when the nozzle is completed, the nozzle shall be fixed at the designated location. Pipeblocks are encountered in the shooting, which must be removed before they are removed. When the jet operates, no one shall approach the rotor with head, hand, shovel, etc. Air presses, jet operators must contact the jetman at the switch valve, and only when indicated are they able to switch the wind valve。
Sampling is a professional exercise and safety concerns in the process must be addressed by reference to safe operations. Strict monitoring of the normative and safety aspects of sampling operations is essential to ensure the accuracy of sampling while ensuring safety。
