Specific Anti-Static esd Management Measures in the Factory
1. Every worker who touches circuit boards must wear a corded anti-static wrist strap.
2. Supervisors and supervisors must wear cordless anti-static wrist straps.
3. Technicians must test the wrist strap every two hours.
4. PCBs must be stored in anti-static bags.
5. Mobile carts (carrying components or PCBs) must be grounded with conductive soft rubber.
6. Mop the floor twice daily.
7. For employees who test positive for high static electricity (even a good anti-static wrist strap won't help them), this is because their skin is too dry. Have them wash their hands. If their static electricity is consistently high, have the supervisor change their workstation (especially for chip, CD, and VCD cameras). 8. Electric screwdrivers, power supplies, and instruments must be grounded, especially ferrochrome. For 936 constant-temperature ferrochrome, grounding is crucial. I've visited many factories, and many don't have grounding (the ground wire is fake). Some 936 ferrochrome also lacks a ground connection, indicating that the ferrochrome is fake. In this case, the measured voltage can exceed 70V. Electric screwdrivers and power supplies can also be this high.
9. Employees working near air conditioners or fans experience particularly high static electricity levels. This is because the air conditioning creates airflow, which rapidly releases moisture. In this case, the distance between workstations may need to be adjusted.
10. It's best to use a damp cloth to hold the workstation.
11. Employee workstations must be grounded and anti-static mat.
12. Rainy weather is different; place a damp cloth at the workshop entrance for people to step on.