drawing construction variable valve timing and lift electronic control (vtec) petrochemical problem management reliability project planning differential phase revisions numbers water supply water based pipe coating installation fabrication brinell scale pipe rack repairing (manual/mechanical) project management pressure vessel instrumentation pumps procurement functional requirement preventive maintenance manifold progress db water treatment hydraulic pump refinery troubleshooting planning expansion joint valves billing pipe mechanical engineering operational excellence hydraulics commissioning management android (operating system) coordinating negotiation rolling time management relationship management