Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Jurnal Mekanik Terapan JURNAL POLI-TEKNOLOGI
Fitri Wijayanti
Politeknik Negeri Jakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Analisis Kebocoran Tube Outlet Header LP Evaporator HRSG dengan Metode RCFA Muhammad Daffa; Arifia Ekayuliana; Fitri Wijayanti
Jurnal Mekanik Terapan Vol 1 No 1 (2020): Mei 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v1i1.3329

Abstract

Ditemukan adanya kebocoran pada tube outlet header LP evaporator HRSG. Kebocoran tersebut terjadi di lokasi pipa masuk ke header sisi keluar dan pada belokan pipa menuju header. Kebocoran pada pipa dapat menyebabkan steam drum tidak mampu memenuhi syarat minimum level air sehingga mengakibatkan sistem proteksi pada HRSG memberikan sinyal untuk trip dan sistem menjadi open cycle yang berdampak pada penurunan daya mampu atau derating. Hal tersebut apabila tidak ditangani maka dapat menyebabkan kerugian, dimana seharusnya gas hasil pembakaran dapat termanfaatkan secara maksimal. Untuk mengatasi hal tersebut, diperlukan metode pemecahan masalah sampai ke akarnya menggunakan Ishikawa Diagram. Penelitian ini bertujuan untuk mengetahui akar penyebab terjadinya kerusakan tube outlet header LP evaporator HRSG dan mengetahui solusi untuk mengatasi kebocoran HRSG agar tidak terulang. Hasil penelitian menunjukkan bahwa dari kajian 5M yang memiliki faktor paling berpengaruh dalam kaitan terjadinya kebocoran adalah karena faktor material; nilai kriteria fleksibilitas pipa melebihi batas yaitu sebesar 0,04, ketebalan pipa telah mendekati batas minimum yaitu sebesar 2,58 mm; pengoperasian fluktuatif, dan management; waktu pemeliharaan melewati batas equivalent operating hour (EOH). Untuk mengatasi kebocoran yang terjadi pada pipa HRSG dapat dilakukan pengecekan terhadap distribusi aliran gas hasil pembakaran, menjaga kualitas air, mengoperasikan HRSG secara base load dan pemeliharaan sesuai EOH.
Root Cause Failure Analysis pada Shutoff Hot Damper Mill Di Pt. Indonesia Power Unit Jasa Pembangkitan Jawa Tengah 2 Adipala Fitri Wijayanti; Nadiyatul Fadhila
Jurnal Mekanik Terapan Vol 3 No 2 (2022): Agustus 2022
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v3i2.4616

Abstract

PT Indonesia Power Unit Power Generation Services Central Java 2 Adipala is one of the suppliers of electrical energy on the islands of Java, Madura and Bali. The main components of PLTU Central Java 2 Adipala are Boilers, Steam Turbines and Generators. The combustion system in the heating process in the boiler requires air, fuel, and heat. Coal as fuel is supplied from coal handling and distributed to the bunker and then through the coal feeder to the Pulvarizer/Mill before going to the combustion chamber. At the time of milling there is a drying, distribution and separation process of coal with foreign objects carried from the mining process so that the coal entering the combustion chamber meets specifications. The milling process is carried out with the help of a Primary Air Fan (PAF) to suck air into the Mill/Pulvarizer. Before entering the Mill/Pulvarizer, the cold primary air and hot primary air are held by the Shut Off Damper, which functions to open and close the PAF airflow to the Mill/Pulvarizer. In the process, there is a possibility of damage/failure from the Shut Off Damper so that the continuity of the process at the Mill/Pulvarizer is disrupted. For this reason, it is necessary to analyze the damage/failure to the Shut Off Damper and solutions
PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS COURSELAB PADA PRINSIP KERJA ENGINE BIDANG KEAHLIAN KENDARAAN RINGAN Imam Wahyudi; Fitri Wijayanti
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2347

Abstract

Development research focused on developing Courselab-based learning aids on the principle of Light Vehicle Engine Expertise which includes Student Books, Student Activity Sheets and Lesson Plans for grade XI SMK students. The model of development used in this research refers to the model of learning aids development of Dick & Carey which consists of three phases, namely (1) identification phase; at this stage the writing of goals and analysis of instructional learning is conducted, identifying initial behaviors and characteristics of the students, (2) development phase; at this stage the Courselab-based learning tools is developed by formulating the goals and the standard reference tests, as well as developing the strategies and the learning aids, (3) testing and evaluation phase. The developed Courselab-based learning aids has been validated by two experts with revision to obtain a result which is fit to use. The tests carried out in three stages, namely one-on-one testing, small group testing conducted at SMK Nasional Makassar to evaluate the practicality of the learning aids and limited testing conducted at SMK Darussalam Makassar to evaluate the practicality and the effectiveness of the learning aids. The research results show that the developed learning aids, after the validation, was declared valid. The learning aids is attributed practical as the students responded positively to the learning aids they used. The learning aids is considered effective as the students responded positively to the learning aids used. It has met the criteria of effectiveness, with the results: (1) student activities have met the predetermined tolerance limits, (2) the teacher activities have fulfilled the observed aspects, and (3) the student learning outcomes on the working engine principle materials have achieved completeness.
KAJIAN KUALITAS PEMBAKARAN TERHADAP PENGGUNAAN FILTER BBM PADA MESIN DIESEL Tatun Hayatun Nufus; Ariek Sulistyowati; Asep Yana; Fitri Wijayanti
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2413

Abstract

The price of oil fuel continues to rise, decreased supplies oil at the other side, those two factors motivate researchers to conduct research related to the efficient use of fuel. Have been made three types of fuel oil which the principle of an electromagnet used a filter, all three made of the coil with a convolution wire as many as 5000 a convolution and diameter of the nucleus of a coil 44.5 mm, 28.5 mm and 17.5 mm, a filter tested in a diesel engine. Testing done in the rpm the ignition is started 1100 until 1700 rpm, by opening throttle % to 60 % from 30%. Testing first one was done by making constant round of 1500 rpm and openings throttle vary from 30 % to 60%, next testing done with the variation of rpm start 1100 rpm until 1700 rpm by making constant valve as 40 % and of 60 % . The purpose of the variations to obtain optimum result against consumption of material fuel ( sfc ) the most little uses. Testing was done in a laboratory material.
Co-Authors Ariek Sulistyowati Arifia Ekayuliana Asep Yana Imam Wahyudi Muhammad Daffa Nadiyatul Fadhila Tatun Hayatun Nufus