To Chumnong
This is the tight spot, cannot reach by two hand. Once your team have to replace the vibration probe during casing is hot condition.
Any special tool that you may need? Please take a look on this picture below then let me know for sure that your team could do the vibration probe replacement within quick time.
It may be a simple thing to do the work as you said. But it have to be clear on what to be done. I also worry for how to tight the bolts, how to remove the bolts. Then to prevent the bolt to be fall out the socket and drop down into the casing? No bending could damage on the signal tubing?
If It is that quite comfortable as you said. Then write back, or sketch the process to me. No need to be fancy, keep it simple step by step by picture. For the other person to be able to remove the vibration probe.
Please use this opportunity to explore your own process and to let me and other plant know, of how the comfortable process that your team success.