Tuesday, June 17, 2014

ESD(Emergency Shutdown ) System




                 ESD shutdown is required to perform a safe process shut down (trip) if any of the unsafe conditions occur .

                  By the safety standard IEC 61508 the functions of an ESD and a process control system cannot be shared -- the safety system must be separate. 

Layers of Protection 


What is vibration?

                                     Mechanical vibration is the dynamic motion of machine components.

                            Vibration measurement is the measurement of this mechanical vibration relative to a known reference. In metric units peak to peak vibration displacement is usually expressed in microns,
            one micron equals one thousandth of a millimeter (0.001 mm).

            It is sometimes expressed in mils, where 1 mil = 0.001 inch