From its industry-leading position, Tyco Flow Control has researched and developed several devices to assure the operation of critical automated packages.
The main pipeline valve are operated few times in his lifetime , but with drastic results if the operation is not good, like human, environmental and properties damages of big proportions
The first and elemental solution is to use double block and bleed valves or double array valves in order to check leakage during maintenance operation , closing 100% the valve , may be one at year
The new technology allows early detection of valve + actuator future failures during normal and emergency operations and partial stroke tests.
The partial stroke test allows to reduce the MTI (Manual Test Interval) that has direct influence in the PFD (probability of Failure to danger – Failure on Demand) in order to reach high safety integrity level- SIL- with safety instrumented systems according IEC61511 standard.
The torque curves and several events during the full or partial stroke allows to predict failure in valve, actuator, solenoid or pneumatic control system.
The intelligent electric actuators have capabilities to calculate and storage torque curves of several strokes, through the strain gage sensors or current complex analysis.
The piston actuators (linear or rotary, gas or hydraulic operated) requires of devices that measure and log: supply pressure, exhaust pressures, actuator chamber pressure, position and small time gaps between events in order to obtain data to do a device profile and to compare with the next operations, the inclusion of low consumption electronic devices doesn’t impact in remote standalone installations, that can be battery powered or solar powered.
The automatic or human analysis of this information allows to determinate the type of possible failures: actuator seal leakage, supply pressure availability during critical and combined operation, valve galling, exhaust blocked, solenoid delays, torque increasing, hydrodynamic torque effects during real operations and others.
This technology was developed in order to ensure the “next operation of the system”, reducing and avoiding cyclical preventive disassembling-assembling operations.