Establishing Visual Control

You might also consider electronic gauges that monitor process variables like pressure, temperature, angle, etc. These can be used for a visual indication next to the equipment or even wired back to a central control room for remote monitoring. Additionally a large number of different variables can be monitored at once in one place (like on a computer screen or indication panel) without the need for the operators constantly moving around the equipment checking mechanical gauges located in different places on the equipment or plant.

You also may want to implement safety interlocks (either mechanical and/or electrical) which will give operators an indication if the equipment is safe to operate/clean/perform next step in manufacturing process, etc.

Here is just one example company providing customisable safety interlock systems

http://www.sick.com/group/EN/home/Pages/Homepage1.aspx

Also try Globalspec

http://www.globalspec.com/

Dear CR4 member

Thank you so much for this valuable reply. Our intention is to install some visual signs on the equipmemt, trying to help the staff to observe from distance if the equipment is running well ( e.g. mean right rotation, a sign for proper level on the vessel level indicator, match marking on the bolts and nuts, sign of good oil level on the frame etc. ). The operators have some walkdowns, routes to check plant integrity. And there are another idea will be welcome to our programm.

Thank you and kind regards