Control Valves PTOP Upgrading.
Upgrading of ABB
Pulse to Pneumatic (PTOP) Controller for Automatic Plant Control (APC) for
control valves and dampers for SJSSAA Phase 2 - Unit No. 3 & 4. In addition,
the positioner feedback was also upgraded. Scope of works involves
installation of PTOP, supply of PTOP stands and instrument tubing's,
instrument air tubing hook up, calibration and stroke testing of the control
valves & dampers after modification works were carried out. Termination of
existing control cables and loop check were also included in the scope of
works. Instrutech Engineering supplied the ABB PTOP to TNBG.
