| Title | Lessons Learned from the Rectification of the Malitbog/South Sambaloran Blow-Off Stations |
|---|---|
| Authors | H.V. Guillen, R.G. Jabonillo, R.A. Andrada, D.H. Cruz, J.P. Villena and H.L. Isip |
| Year | 2000 |
| Conference | PNOC-EDC Geothermal Conference |
| Keywords | |
| Abstract | Blow-off Stations are an integral part of the Fluid Collection and Disposal System (FCDS). They help control the supply pressure to the power plant and minimize disruption in the FCDS operation in case of tripping and load shedding of the power plant. Their use in normal operation must be minimized, and reliability of their operation must be ensured. The problems with the blow-off stations of the Malitbog/South Sambaloran FCDS became apparent during the early operation phase. First, the stations were exceedingly noisy during venting. Second, vibrations were observed in the piping system to the rock muffler which led to premature failure of positioners of the pneumatic control valves. These problems were of much concern to the FCDS operations. PNOC Energy Development CorporationÆs Engineering Design Department, after an engineering evaluation, were able to formulate a plan to mitigate these problems. A series of rectification works were implemented and the resulting performance observed. The lessons learned from the rectification project were then incorporated into the design criteria for blow-off stations. |