iFluids Engineering was awarded to perform HAZID (Hazard Identification) and HAZOP (Hazard and Operability) for the entire Integrated GCS Complex, ONGC CBM Asset in Bokaro, Jharkhand
Before being put into service, the ONGC CBM Asset, Bokaro’s hiring facility-integrated GCS complex underwent a HAZID & HAZOP study. There are about 26 P&IDs that are now active for this position.
Gas from 13 main feeder lines is received by the Gas Gathering System, which then routes it to an entrance manifold with isolation and NRV valves before sending it to a Common Knock-Out Drum. The gas is compressed to 10 kg/cm3 by compressors after passing through a 5-micron filter and being transferred to the Molecular Sieve Gas Dryer Package. The custody transfer gas metering skid is used to sell dehydrated gas. Seven feeder lines provide produced water, which is gathered in storage tanks processed, and then sent to a public stream or an evaporation pond. Gas pressure is raised to 10 kg/cm2 by engine-driven reciprocating gas compressors, and blowdown drums are used to treat any liquid traces. A molecular sieve is used for dehydrating compressed gas.
OBJECTIVE – HAZID STUDY
- Early detection of potentially dangerous occurrences, including internal, external, and from sources that, if realised, could jeopardise people, property, and the environment
- Evaluate the listed hazard occurrences’ chances of occurring and their harmful implications qualitatively.
- Assess the safety precautions offered in order to prevent, mitigate, or control the harmful results.
- Assess the extra mitigation strategies needed to bring the risk down to an acceptable level.
- Additional quantitative assessment and analysis are required for the identification of the remaining harmful events.
- Determination of the project’s effects on the environment and public health.
OBJECTIVE – HAZOP STUDY
- Recognizing possible risks and practical difficulties.
- Making suggestions for improving safety through design, process, etc.
- Acknowledging the risks associated with instrument malfunction, operational issues, and equipment malfunction.
- Performing the HAZOP analysis in order to carefully examine the P&ID for deviations from typical operations that might present risks or operational issues throughout the design and procurement phases.
- Furthermore, the HAZOP may be used to advise that new safety measures be put in place or extra safety assessments be conducted for outcomes that the existing protections are unable to lessen.
SUMMARY
A multidisciplinary team from several departments, including Process Engineering, Process Safety, Projects, Instrumentation, Maintenance, Electrical, etc., participated in the HAZOP and HAZID studies for the ONGC CBM Asset Bokaro Jharkhand.
Using fundamental engineering papers such as PFD, P&ID, Process Design Basis (PDB), and plot plan, HAZOP and HAZID study were carried out unit-by-unit.
The HAZID team did not provide recommendations in cases where they thought the current safeguards would be sufficient to limit the possible risks to acceptable levels because pre-commissioning had already been finished and was prepared for commissioning.
Based on the results of the HAZOP session, recommendations were made to lessen the possibility of a hazardous event happening or the severity of the outcome.