What challenges did everyone face during sampling?

During sampling, a glass bottle broke, and an employee was burned by the materials.

When I went down to the workshop, the first sampling was done with bare hands (the solvent used was mainly acetone), as the supervisor who was guiding me took samples with his bare hands. I was really annoyed at that time – why didn’t he wear gloves?

The ball tank used in our hydrogen production facility caught fire during sampling.

1. Taking furnace flue gas samples from the observation hole might have involved two stages of combustion; the hot air caused my arm hair to get burned. 2. It was a bit difficult to take oil slurry samples for someone, but then it became easier; I wiped my pant leg with it. 3. The person who did the test was afraid of the dark at night while taking samples, so they asked someone to accompany them. :Lol (where I used to work, the samples that were relatively easy to obtain were those for testing, while those that involved more risk or were more complex processes were the ones that required special handling. ）

1. Oil leakage and burns during sampling in re-refining. An operator went to take a sample during the refining process when the drainage wasn’t working properly (normally no samples are taken during refining, and there is no sampler installed). He turned up the drainage to full volume; suddenly... the drainage started working, but he panicked. The floor was covered in oil, and when he tried to go over to turn off the drainage, his feet were burned. 2. During the sampling of oil slurry, the sampling bottle broke. Thanks to the lessons learned from previous attempts at sampling hot oil used in oil refining, a hot oil sampler was installed during shutdowns for inspections. I was on site while sampling the slurry; the sampling speed was quite slow. When about 1/5 of the sample had been collected, the bottom of the sampling bottle broke off, causing the oil slurry to spill onto the sampler’s feet. The amount that spilled was small, so it wasn’t a serious issue.

Issues encountered during sampling: 1. The gas sampling bag broke； ⒉The glass bottle broke ； ⒊Sampling port not found ； ⒋The sampler will not open ； Wait for the situation.

Oil-containing wastewater was subjected to vacuum distillation and electrical desalination; oil was present in the water stream, and the sludge blocked the valve opening. A little water came out at first, but after hitting the valve with a wrench, oil started spraying out. Since the liquid was coming from the condensate discharge system, the oil splashed onto the ground and covered me completely; I quickly took off my work clothes and fled the scene... Thankfully, no fire broke out – it was really scary

It seems that sampling cannot be taken lightly either! However, now more money can be spent to acquire good and safe sampling equipment, and these factors need to be taken into account in future designs.

Safety must be prioritized when sampling; cooling devices are necessary for sampling at high temperatures. If there is a blockage, it must be resolved before the valve can be opened.

When sampling, care should be taken to ensure that the samples are representative. For example, some material should be released before sampling; if the sampling pipeline has branches, the sampling tube must first be emptied, then flushed, and only after that can sampling take place.

Here’s a true story: To clean the parts, the mechanics drew rough gasoline from the catalytic converter using plastic buckets. (I had heard before that static electricity-generating devices should not be used for gasoline sampling, including the use of plastic tanks at gas stations to collect gasoline); it caught fire after only 1/3 of the gasoline had been poured in. Fortunately, there were people in the facility area who intervened promptly, preventing a more serious accident.

Common problems encountered when sampling catalytic devices: 1. Burns from high-temperature flue gas； 2. Fire caused by re-refining oil, scalding from oil slurry, or blindly opening valves too wide ； 3. Poisoning by dry gas or liquefied gas, or frostbite ； 4. Moderate injury from alkaline solution ； 5. Burns from sampling excess G steam ； 6. Leakage due to the sampling valve not closing properly after it is opened ； 7. Excessive force caused damage to the sampling valve. Wait..... During the sampling process, the operator must follow the operating procedures; actions cannot be taken arbitrarily.

1. Pipeline blockage 2. Toxic gas leakage, valves not sealing properly, too high a position, samples falling from a height

1. Pipeline blockage 2. Toxic gas leakage, valves not sealing properly, too high a position, samples falling from a height

When employees at our factory were taking samples of liquid ammonia, it splashed into their eyes and skin. Fortunately, proper action was taken promptly, which prevented a serious accident from occurring!