In the first and second quarter of year 2015, PowerQ had performed commissioning for HVAC, Mechanical and related Electrical and Control system, for JDP. This ship is fitted to work in sub-zero to +45 Deg Celsius ambient. The 100M+ long multi-purpose offshore construction vessel ship can accommodate more than 400 crew members working round the clock to lay sub seas piping. Being a DP ship utilities such sea water, electricity were supplied by separate sources located in starboard and port side.
The scope comprised of balancing, equipment performance test, commissioning, integration and site acceptance test for chillers, seawater pumps, humidifiers, AHU, SCR Electrical heaters, cold rooms and related Electrical and PLC based control system. Challenge was to simulate performance test for sub zero and < 20% RH weather condition. This was achieved by artificially resetting set points in control system to trigger functions of equipments such as humidifiers, air heater, dampers and valves. After successful completion of SAT test, the performance was again validated by Client in a week long sea trials.
Various conditions were simulated with assistance of experienced contractor FW, to commissioning the mechanical, HVAC and related PLC based control and electrical system.
Other Similar Experiences:
In year 2011, PowerQ performed electrical system audit and performance test (using artificial loads) in South China Sea for a similar ship with crane of 3000T capacity.