Exhaust line leak causing bad smell Share another past history of exhaust line choke and causing leak. There was a feedback that the whole subfab was full of bad smell and after smell detector went through the whole subfab , was highly suspected the bad smell caused by this leak at the exhaust line. The joint was not screwed tighly or over years, the connection loosened, you can clearly see a layer of yellowish thing came out from the line. The choke line from another angle.…
@technician in December 2020
5S in the manufacturing line If you in manufacturing line, you would have heard of 5S practice. Basically 5S stands for Sort, Set in Order, Shine, Standardize, & Sustain. The idea originate from Japan. And the original 5S refers to seiri (整理), seiton (整頓), seisō (清掃), seiketsu (清潔), and shitsuke (躾). But too hard for non-japanese to remember seiton etc, so there comes the English version. My line not escaped from this 5S practice but strictly follow, so when you are the…
5S housekeeping experience sharing Continue the last topic of 5S in the manufacturing line. Sometime really of one kind that, during startup , vendor or contractor never dispose away their stuff but left over like photo below, and went away. The you know your bad days come when 5S auditor take photo and send to the whole world and ask to clear within a week or so. Can you have a feeling how heavy is the box itself? and full load of many many different stuffs. After sweat and…
SCADA system- real time gas pressure monitoring In semicon industry, there is a system for the facility team to monitor real time the gas pressure in each and every gas manifold and gas cylinder that they supply to the modules. For instance, they supply Silane gas to certain machines, so the pressure will have to closely monitored by the SCADA system. If there is any abnormal thing happen, some action can be taken to prevent it from getting worse. Below the screen on the…
Learning more BCH via read.cash Just get to learn Bitcoin Cash after joining this platform, read.cash, so also able to generate few BCH and learn to crypto world more after getting few. The recent BCH hard fork I also missed out , so not getting any additional coin. But it sparks my interest to learn more about this coin that read.cash attached to. Friend sent me this video and asked to go through, but after go through also not much conclusion from it. Definitely need to…
Mass Flow Control (MFC) In semicon indusctry , there is one sparepart that is very common in all department . That is Mass Flow Controller (MFC). Function of the MFC is receiving the command from the computer , and open up the micro valve inside it and let the gas to flow through it. Eg. if your process asks for 100 sccm Argon gas, then it will open up the valve and measure the difference of gas had gone through it. MFC of different gas need to be calibrated using different…
Understanding different cultures through Youtube We know that the world media is controlled under some big shots/countries for their own benefit. E.g when we talked about Iran, layman could easily think of evil country or conservative people as what the main source media painted them and wants us to believe it also. Thanks to modern day social media, more and more layman of common people like us , can self portray their life and community to outside world. For example,…