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Indah Handayasari
Jurusan Teknik Sipil, Sekolah Tinggi Teknik – PLN
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Journal : Power Plant

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Kajian Modifikasi Sistem Udara Instrumen Untuk Peningkatan Kehandalan PLTU Indramayu Eko Sulistyo; Indah Handayasari; Nur Rohman Aziz
JURNAL POWERPLANT Vol 2 No 2 (2014): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v2i2.808

Abstract

Reliable power generation can not be separated from the reliability of the power plant system integration. At the power plant, in particular all the power plant system reliability must be maintained so that no damage is fatal. Especially the instrument air system which is driving tools instrumentation. At indramayu power plant with an installed capacity of 3 x 330 MW nearly all settings instrumentation equipment sourced from compressed instrument air. This system is derived from the rotary screw compressor manifold floaded oil. In the instrument air system contained additional equipment to maintain the quality of the air produced is water dryer. But the fact of compressed instrument air quality is not good and still below the standards of ANSI / ISA-S7.0.01-1996. The output pressure of the compressed air system is also less. Normal operating pressure is 0.75 - 0.8 Mpa, but in actual field conditions of water stress on the receiver tank just 0:57 -0.64 MPa. This happens because of the existing compressor 5 only 3 that stand by. The performance of the compressor that is running downhill. It can be seen from the resulting pressure dropped from 0.85 MPa to 0.76 MPa. Based on these problems required the study and modification of compressed instrument air supply to find the best solution.
Perhitungan Ketebalan Dan Sisa Umur LP Drum HRSG 1.1 PLTGU Muara Karang Jasmid Edy; Indah Handayasari; M. Nasirudin
JURNAL POWERPLANT Vol 4 No 1 (2016): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v4i1.833

Abstract

In the world of power generation are intimately associated with the boiler and HRSG (heat recovery steam generator), the equipment is functioning as modifiers of water into steam that drives the turbine so that it can turn a generator and produce electricity. HRSG section are instrumental in changing the water into steam is the drum, the drum has a high pressure and temperature so that the equipment must always be inspected every overhaul. Inspection, among others pengkuran drum wall thickness on using Ultrasonic Thickness Testing, this inspection aims to determine the condition of the drum. From the results of these inspections at some point find there is some corrosion on the walls. Then calculated the minimum thickness of the drums and the rest of his life estimates using Standard ASME Boiler and Pressure Vessel Code.
Co-Authors Agnes Paradiana Putri Aziz Maulana Eko Sulistyo Jasmid Edy M. Nasirudin Nur Rohman Aziz