BOILER INSPECTION PLANNING CFB THERMAL POWER PLANT BASED ON CONDITION PERFORMANCE OF BOILER CASE STUDY PULANG PISAU THERMAL POWER PLANT ii 2X60 MW
Planning boiler inspections especially for the CFB type power plant currently does not have a standard standard. The advantage of this study is to provide a new alternative to inspection planning with reference to boiler performance conditions. The method is done by collecting boiler performanc...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/44273 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Planning boiler inspections especially for the CFB type power plant currently does
not have a standard standard. The advantage of this study is to provide a new
alternative to inspection planning with reference to boiler performance conditions.
The method is done by collecting boiler performance data that is measured
routinely and correlates with the operating hours of the plant. The data taken are
pipe thickness, boiler efficiency and sealpot temperatur. The data is processed
using exsisting standard as API 570 Standard for calculating pipe corrosion rates,
API 510 and ASME BPVC standards for calculating remaining service life of pipes,
regression analysis to predict inspection hour recommendations, and modeling
using Weibull and MonteCarlo distributions to calculate availability and risk of
RCFA program improvement results for boiler areas.
From the calculation of the pipe thickness degradation rate, it is found that the most
critical area for boiler pipe thickness is in the cyclone area which is an average of
0.30 mm / y with an average pipe remaining life of 2.9 years. Whereas the area that
is considered the safest for the rate of degradation of the pipe thickness is the
economizer area with an average of 0.07 mm / y and the average remaining service
life of 26.21 years. To reduce the potential for pipe leakage and refractory damage,
from RCFA it is proposed improvement of coatings on boiler pipes and refractory
repairs according to procedures that adopt API 936 standard. From the results of
the Monte Carlo simulation, if pipe coating improvements are implemented,
equipment availability can increase about 8% and risk of failure decrease 8.42%.
If Refractory improvement refers to API 936 standard are implemented, equipment
availability can increase about 5% and failure risk decrease about 5.4%. It is
expected that with boiler inspection based on condition performance, the
implementation of inspections is more efficient in terms of duration and the cost of
spare parts can be minimized. Thus the unit's performance can improve and
contribute to the achievement of corporate targets in a corporate manner.
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