Hazard and Operability (HAZOP) Study on LNG Skid

Abstract

This study aims to investigate the potential hazards and Incidents that might occur in the LNG skid and to assess existing safeguards and recommends effective solutions if required to enhance the overall safety standards at the LNG skid area. This research is based on a qualitative Hazard Identification and Risk Assessment (HIRA) method called as Hazard and Operability Studies (HAZOP). This risk assessment technique was performed to identify the various potential accidental events and worst case scenarios in the LNG skid area which is a structured and systematic technique that provides an identification of the hazards and the operability problems using logical sequences of deviation-cause-consequence of process parameters, it analyses all the existing critical equipment using process flow diagrams (PFD) and piping and instrumentation diagrams (P&ID) to pin point and identify the source of hazards that can cause harm to personnel, assets and the environment. The results were to identify causes, consequences and safeguards for the hazards related to all the possible ways of accident in the LNG skid. This approach has been applied to the analysis the existing safety features in the LNG skid which is under construction. The results showed that HAZOP is a useful technique to identify the potential sources of human errors, machine faults, multiple or common cause failures and correlation of cause-consequence of hazards during the HAZOP process and proper preventive measures were suggested in the required areas of the LNG skid.