HAZOP Study at 9X135 MW, Captive Power Plant(CPP) for Vedanta Limited – NTPC GE, Jharsuguda

The 1215 MW Captive Power Plant (CPP) (9x135MW) of Vedanta Limited at Jharsuguda (Orissa) is the largest CPP of India. It is currently maintained and run by NGSL (NTPC and GE Joint venture). It was commissioned in July 2008 and configured with 9 number of coal-fired sub-critical units of 135 MW each. Each sub-critical unit has a single-reheat condensing steam turbine and pulverized coal-fired natural circulation boiler.

Conducted Hazard and Operability (HAZOP) study for 1215 MW ( 9X135MW ) Captive Power Plant (CPP) of Vedanta Limited at Jharsuguda (Orissa). The HAZOP was conducted for one of the 135MW CPP since all the CPP were similar.

A Hazard and Operability study (HAZOP) systematically and effectively reviews potential hazards and operability problems which may potentially lead to asset / environmental damage, business interruption and/or personnel injury. It also helps classify the existing safeguards provided as prevention or mitigation for a given hazard. Recommendations and operating procedures are provided as prevention or mitigation measures against potential hazards and operability problems identified during HAZOP Workshop.

The HAZOP study was initiated with a Kick off meeting by the HAZOP Chairperson from iFluids Engineering along with the NGSL multi-disciplinary team. The HAZOP study methodology along with its golden rules and how the workshop would be performed, was explained to the NGSL team and the inputs required for the study were proposed. During the HAZOP Workshop, the multi-disciplinary team & the chairperson reviewed the relevant documents and discussed potential hazard and operability scenarios through a brainstorming session. The outcomes of the session were systematically recorded.

The recorded discussion were then reviewed by iFluids engineering and the report was produced to NGSL. The methodology and results proposed by the iFluids team were accepted by NGSL for the identification and minimization of risk, which paved way for the successful completion of the project.