Abstract
Induced Draft Fan (IDF) is a fan that sucks air from inside the boiler out to the chimney, producing negative pressure on the boiler, keeping the circulation of combustion air in the boiler normal. IDF is one of the main components in the exhaust gas system which serves to maintain the temperature and vacuum of the furnace in the boiler. This report will identify IDF damage using vibration indication control instruments by looking at vibration indication trending data through the Distributed Control System (DCS) in the Central Control Room (CCR). The results of the trending data will then be identified whether the vibration in Induced Draft Fan has increased, if the vibration ≥ 5.6 mm/s is declared an alarm and if the vibration ≥ 7.1 mm/s then the unit trip or must be stopped. Based on the results of research during industrial practice in Banten 2 PLTU Labuan there were 2 conditions in the IDF, namely when there was a disturbance with a height of X and Y side vibrations of 22.5 mm/s, and conditions after improvement with the height of X vibration side that is, an average of 4.2 mm/s and Y side averaging 4.1 mm/s. The high vibration is affected by the damage of several IDF components, caused by the amount of ash remaining combustion that enters the IDF which causes abrasion of the impeller blade.
Highlights
The Steam Power Plant (PLTU) in Banten Province has a total capacity of 4,945 MW which is divided into three regions namely Banten 1 PLTU Suralaya located in Suralaya Village, Pulo Merak District, Cilegon City, Banten 2 PLTU located in Sukamaju Village, Labuan Subdistrict, Pandeglang Regency, and Banten 3 PLTU Lontar located in Lontar Village, Kemiri District, Tangereng Regency
This vibration indication indicator control instrument used by Banten 2 PLTU operators as a reader in identifying Induced Draft Fan (IDF) damage through tranding data that can be seen through Distributed Control System (DCS)
Based on the table and graph of the vibration parameters above in induced draft fan 2B within 1 week from day 1 to day 6 of high vibration for side X which is an average of 4.9 mm/s and side Y height of average vibration reaching 6.2 mm/s, the indication of vibration at this altitude indicates an alarm indication, on day 6 on the Y side the vibration is on the indication of trip, but the operator based on the results of the daily meeting has not decided to stop the unit
Summary
The Steam Power Plant (PLTU) in Banten Province has a total capacity of 4,945 MW which is divided into three regions namely Banten 1 PLTU Suralaya located in Suralaya Village, Pulo Merak District, Cilegon City, Banten 2 PLTU located in Sukamaju Village, Labuan Subdistrict, Pandeglang Regency, and Banten 3 PLTU Lontar located in Lontar Village, Kemiri District, Tangereng Regency. Induced Draft Fan (IDF) functions to maintain the temperature and pressure of the vacuum furnace in the boiler. Instrument instruments on induced draft fan include the appointment of vibration parameters on induced draft fan monitored in the Central and Room Control Room (CCR) through the Distributed Control System (DCS). If the vibration is at an altitude of ≥ 5.6, the IDF is declared alar, whereas if the vibration reaches a height of ≥ 7.1 mm/s the IDF must be stopped or trip while the vibration standard used is ISO 10816-13 This vibration indication indicator control instrument used by Banten 2 PLTU operators as a reader in identifying Induced Draft Fan (IDF) damage through tranding data that can be seen through DCS. Control System (DCS), by looking at the height of the vibration parameter based on time
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