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Journal : Bharasumba Jurnal Multidispliner

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ANALISIS ENERGI DAN EKSERGI PADA SISTEM ROTARY KILN RKC-2 PT. SEMEN BATURAJA Sati, Adinda Lara; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.300

Abstract

The cement industry is one of the energy-intensive industries because of the large amount of energy used. The cost used for energy consumption in a cement factory is about 20-30% of the total cost of cement production (UNIDO, 1994). In the cement production process, the raw mill preparation and clinker production stages are the stages that require the most energy. Energy conservation in the rotary kiln system affects the optimization of production costs. One method of identification on energy conservation is through energy and exergy analysis. In this analysis, energy loss and exergy were identified based on the calculation of mass balance, energy, enthalpy, entropy and exergy. Based on the analysis, the value of energy efficiency is greater than exergy efficiency. The energy and exergy efficiency of the rotary kiln system are 79.40% and 57.10%, respectively. The energy and exergy efficiency of the rotary kiln unit are 64.93% and 50.48%, respectively. The exergy efficiency value in the rotary kiln system is greater than the rotary kiln unit because there is energy utilization at the outlet of the suspension preheater and cooler. The greatest energy and exergy efficiency occurred at the maximum clinker mass flow rate and minimum coal mass flow rate. Irreversibility of rotary kiln units and systems RKC-2 PT. Semen Baturaja Palembang are 49.52% and 42.9%, respectively.
ANALISIS PROSEDUR PEMBUATAN SEMEN PADA PT. SEMEN BATURAJA Amelia, Mutia Putri; Safaruddin, Safaruddin; Muzzaki, Mukti Mabrur
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.301

Abstract

Industri semen merupakan industry strategis yang sangat dibutuhkan dalam setiap negara. Dimana perkembangan infrastruktur memegang peranan penting dalam pembangunan nasional salah satu material penunjang untuk melakukan pembangunan nasional adalah semen (cement). Semen adalah komoditi yang memanfaatkan sumber daya alam berupa batu kapur, tanah liat, pasir besi dan pasir silika melalui proses pembakaran pada temperatur tinggi. Secara umum semen dapat didefinisikan sebagai perekat hidrolisis yang dihasilkan dari penggilingan klinker yang kandungan utamanya kalsium silikat dan bahan tambahan berupa kalsium sulfat. Semen disebut sebagai bahan perekat hidrolisis karena senyawa-senyawa yang terkandung di dalam semen tersebut dapat bereaksi dengan air dan membentuk zat baru yang bersifat merekatkan terhadap batuan. Meningkatnya pertumbuhan semen sampai saat ini masih dipengaruhi oleh tingginya tingkat pembangunan oleh sektor negeri maupun swasta serta tingginya kebutuhan perumahan bagi masyarakat. Permasalahan yang dialami oleh PT. Semen Baturaja Tbk. adalah peningkatan kualitas kuat tekan produksi semen. Salah satu upaya meningkatkan kualitas kuat tekan semen melalui proses produksi dengan menggunakan material bahan baku dan bahan pendukung yang bersifat tak bisa diperbaharui, serta material bahan pendukung yang berasal dari hasil daur ulang. Pemanfatan ke-lima bahan baku tambahan yaitu clinker, gypsum, trass, batu kapur, dan fly ash yang digunakan untuk meningkatkan kualitas kuat tekan produk semen. Dalam Pembuatan Semen PT. Baturaja dimana, semua senyawa utama untuk semen terdapat dalam batu kapur dan tanah liat, tetapi tidak semua batu kapur dan tanah liat memiliki proporsi kimia yang memenuhi untuk membuat semen dengan kualitas semen yang diinginkan. Oleh karena itu, pada proses pembuatan semen bahan baku utama tersebut biasanya ditambah bahan lain sebagai koreksi unsur kimia yang kurang, yaitu berupa pasir besi dan pasir silika. Senyawa kimia yang terdapat dalam bahan baku dan yang diperlukan adalah Oksida Kalsium (CaO), Oksida Silisium (SiO2), Oksida Alumunium (Al2O3) dan Oksida Besi (Fe2O3). Disamping senyawa-senyawa tersebut, terdapat juga senyawa-senyawa lain yang keberadaannya tidak diinginkan dan harus dibatasi, sepeti Magnesium Oksida (MgO), Alkali, Klorida, Sulfur, dan Fosfor. Oleh karena itu penelitian ini akan dilakukan untuk menganalisis pengaruh bahan baku tambahan terhadap peningkatan kualitas kuat tekan produksi semen yang dihasilkan di PT. Semen Indonesia Tbk.
PERAWATAN DAN PRINSIP KERJA MESIN RECLAIMER CLAY DOCING DI PABRIK II PT. SEMEN BATURAJA (PERSERO) Tbk Ibrahim, Anang Rohmad; Safaruddin, Safaruddin; Muzzaki, Mukti Mabrur
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.302

Abstract

Dalam Pembuatan produk semen yang berkualitas, Secara khusus semen Baturaja memproduksi semen portland type 1 maka dari itu diperlukan  peralatan yang mampu memindahkan atau menyalurkan menyalurkan bahan utama semen yang  berupa clay ( tanah liat ), oleh karena itulah diperlukan peralatan yang efektif dan efesien sehingga digunakan mesin reclaimer clay sebagai alat pemindah atau penyalur bagi kerja mesin tersebut khususnya reclaimer clay.    Pabrik II PT. Semen Baturaja menggunakan sebuah mesin bernama Reclaimer Clay Docing yang merupakan alat transport material yang berfungsi untuk mengambil tumpukan material dari storage ke feeding vertikal mill dengan dibantu beberapa conveyor lain. Dimana dalam hal ini reclaimer dipergunakan untuk mengambil material tanah liat ( clay ) dari storage. Reclaimer ini beroperasi dengan program dan bisa di start dari Central Control Room.    Agar dapat berfungsi dengan baik maka alat ini memerlukan perawatan setiap bulan, minggu bahkan setaip harinya. Pada saat mesin beroperasi sering dijumpai peristiwa yang dapat menggangu prestasi kerja mesin, antara lain dikarnakan adanya ketidakseimbangan pada mesin yang disebabkan oleh beberapa hal yang terjadi di lapangan. Salah satu faktor yang mempengaruhi kerja mesin reclaimer clay adalah perawatan yang kurang baik, sehingga atas dasar hal tersebut maka penulis ini membahas mengenai prinsip kerja dan perawatan mesin reclaimer clay Docing Unit DPL 08. Pemeliharaan Pencegahan, pemeliharaan ini dilakukan dengan system pencegahan, untuk menjaga kinerja dari suatu alat tersebut. Hal ini memudahkan penggunaan atau antisipasi jika terjadi masalah. Adapun system kerjanya dimana dengan sistem interlock pertama belt conveyor clay transport sampai ke feeding mill sudah beroperasi secara sentral.  Weight feeder  (Docing Unit) kemudian discharge belt setelah semua belt beroperasi kemudian boom reclaimer beroperasi dengan diikuti oleh pompa oli untuk lubrikasi chain selama beberapa detik. setelah chain dibasahi oleh oli maka boom buckets siap untuk mengangkat material yang ada didalam storage.
MENGHITUNG EFISIENSI THERMAL PADA ALAT VERTICAL RAW MILL DI PABRIK BATURAJA II PT SEMEN BATURAJA (PERSERO) TBK. Alfiansyah Miftahul Rizky; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.305

Abstract

In the process of making cement at PT Semen Baturaja (Persero) Tbk. There are seven processes that occur, namely the mining process (quarry), the grinding process (crushing) and drying (drying), the raw meal burning process into clinker, clinker cooling, clinker grinding, and the packing process. The vertical raw mill is the main tool used in the process of grinding and drying raw materials using a drying medium, namely hot air from kiln exhaust gases. In this milling and drying process, limestone, clay, silica sand and iron sand, will produce a product, namely raw meal. In order for the reactivity of the material to be achieved in the next process, the standard of fineness of raw meal must have a sieving above 90µ (14-20%). In the drying process, the raw mill can dry materials that have a moisture content of 15% to <1%. The maximum moisture content is permitted at 1%, this is important to anticipate possible obstacles in transportation and to improve thermal efficiency. Efficiency is a measure in comparing a process of using input energy with the realized use or output of a process of activities carried out as well as the sources and energy used. In vertical raw mill equipment, thermal efficiency needs to be calculated to determine whether the quality of the heat used is maximal, where in the vertical raw mill the standard thermal efficiency value has been set in the range of 85 - 100%. In the results and discussion, the highest thermal efficiency value on the vertical raw mill tool is 96.28% with a heat loss value of 3.71%, while the lowest thermal efficiency value obtained is 87.90% with a heat loss value of 12.09%. For the heat balance, the highest total vertical raw mill heat balance is 33,922,195.16 kcal and the lowest is 22,506,739.34 kcal.
ANALISIS KINERJA ALAT CALSINER DITINJAU DARI EFISIENSI THERMAL DI PABRIK BATUARAJA II PT. SEMEN BATURAJA (PERSERO) TBK. Tiara, Anindita Bunga; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.306

Abstract

Calciner is a heating aid used in all modern rotary kiln products. The calciner is a preheating device and a place for the reaction to occur preliminary calcination before entering the kiln. Calciner has been operating at the right time long enough, considering its use, it is necessary to analyze the efficiency Calciner tool performance. Calciner tool which is a tool that is used as a place for the process of calcining limestone and burning fuel simultaneously in a cement factory. The addition of calciner to the cement plant aims to reduce the burning zone load in the kiln because the fuel to the calciner reaches 60%, increases the production capacity of the kiln, and makes the operation of the kiln more stable. The calciner uses coal as fuel which is in contact with hot air from the kiln (tertiary air) coming from the grate cooler. In the development of this calciner system, each cement plant has a different design, but has the same goal, namely to increase the degree of calcination and increase production capacity and reduce energy consumption, especially heat energy used in the kiln. The purpose of using the Calciner is to reduce the burning load of the rotary kiln. at PT Semen Baturaja (Persero) Tbk. using a preheater with 5 levels, where the calciner is placed after cyclone IV then the calciner results to cyclone V. The calciner has a total height of 59.75 meters with an inner diameter of 7.6 meters. At the top and bottom are cone-shaped where the top cone is larger in diameter than the bottom cone. This is because the feed is in the form of solids and at the bottom enters the tertiary air in the form of gas at PT Semen Baturaja (Persero) Tbk.
EVALUASI KERJA PADA ALAT GRATE COOLER DI PABRIK BATURAJA II PT SEMEN BATURAJA (PERSERO) TBK Tanthowy Z, Thoriq Verel; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.309

Abstract

Semen Baturaja (Persero) Tbk. is one of the industries in Indonesia which is engaged in cement. The cement production process at PT. Semen Baturaja (Persero) Tbk. divided into several stages, namely mining of raw materials, breaking of raw materials, drying of raw materials, mixing of raw materials, burning and cooling, grinding of semi-finished materials, and bagging cement. PT. Semen Baturaja (Persero) Tbk. (Persero) produces cement with raw materials in the form of limestone and clay obtained from the Company's limestone and clay mining site which is located about 1.2 Km from the factory in Baturaja, South Sumatra. Grate cooler is a type of clinker cooler that serves to cool the clinker quickly (quenching) in the cement production process. The cooling process in the grate cooler is an important part in determining the quality of cement. Clinker cooler efficiency is the ratio between the amount of heat returned to the kiln along with secondary air as kiln fuel air and tertiary air as calciner fuel to the amount of heat stored in the clinker when it enters the cooler inlet. The Grate Cooler is one of the main tools in the manufacturing process. cement. In the cement manufacturing process, there is a standard that has been set to determine the type of cement produced. In order to produce cement according to predetermined standards, the things that need to be considered are various aspects in the manufacturing process, including the composition of the materials used in the process. In addition to this, the heating and cooling processes in the clinker manufacturing process must also be considered.  
MENGHITUNG SPESIFIC ENERGY CONSUMPTION CALCINING ZONE ROTARY KILN PT. SEMEN BATURAJA (PERSERO) TBK. Panjaitan, Roma Tua; Anugrah, Rendotian; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.311

Abstract

One of the equipment in the factory that uses a lot of energy is a rotary kiln. Rotary Kiln is a cement product mixture (clinker) burner which is used to raise materials to hig temperatures 9calcination) in a continous process. it can be analyzed that the more coal and the higher the net heating value of the coal supplied for combustion in the rotary kiln burner, the higher the specific energy consumption value because the heat of flue gas from burning coal entering the calcining zone of the rotary kiln will be even greater.From the calculations that have been done, it can be evaluated that the specific energy consumption of rotary kiln calcining zone is influenced by several factors, including; the amount of feed that enters the calcining zone, the amount of fuel (coal) used, the temperature of the kiln outlet gas, air and steam leaks in the kiln wall including heat loss that occurs in the kiln. (Adam Atmaca, 2014). The specific energy consumption calcining zone of the rotary kiln after the calculation can be categorized as good for the size of the heating room which has the most heat loss possibilities. However, the specific energy consumption of the rotary kiln calcining zone can still be maximized by improvising the components of the equipment, based on the relatively large percentage of heat loss, it can be done by controlling the coal feed, excess O2 according to the needs of the mass entering the kiln to be heated so as to minimize heat loss. in the calcining zone of the rotary kiln.
WORK INTRUCTION (WI) BELT CONVEYOR 26BC05 DENGAN METODE PENYAMBUNGAN DINGIN (COLD SPLICING) PT. SEMEN BATURAJA (PERSERO) Tbk Zakiah, Siti; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.323

Abstract

The development of science and technology continues to increase rapidly, not to mention in the industrial sector, Indonesia has now entered the era of the Industrial Revolution 4.0, this has resulted in an increasing need for professional human resources to support the development process of the industrial world. Automation in industry is part of developments that are influenced by technology, such as a means of transportation due to the demands to increase productivity, reduce production costs, make production easier and also the need for optimization in order to increase work efficiency. One of the means of transportation used in the industrial world is a belt conveyor, one of which is intensively used in every branch of the industry as an industry engaged in the cement industry using a conveyor belt to carry and distribute solid materials such as coal, limestone, clay, and other materials. Belt conveyors are used in industry, usually to move material in the unit loading section. The choice of belt conveyor as a means of transportation is that the capacity handled is the distance of material transfer, the conditions of transportation whether it is vertical, horizontal, or size. The conveyor belt used is adjusted to the material being transported, while the requirements that must be met are that the conveyor belt does not absorb water. In determining the conveyor belt layer can be determined by the width of the conveyor belt used
EFFICIENCY ANALYSIS OF ROTARY KILN EQUIPMENT IN FACTORY II PT. SEMEN BATURAJA (PERSERO) Tbk. REVIEW OF THERMAL EFFICIENCY Perdana. Ts, Redho; Cundari, Lia; Safaruddin, Safaruddin; Robiansyah, Robiansyah
Jurnal Multidisipliner Bharasumba Vol 1 No 04 (2022): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v1i04.328

Abstract

Semen Baturaja (Persero) Tbk. is a factory that produces cement as a raw material for construction for small to large scale. The cement industry is one of the industries that in the production process consumes a large amount of energy, the costs incurred for energy consumption in a cement factory range from 20% - 30% of the total cost of production. The largest energy requirement comes from the combustion process in the kiln. Rotary Kiln is the main equipment in the manufacture of cement which requires heat of combustion for the kilnker formation process. The main source of heat of combustion comes from coal. The evaluation of the rotary kiln was carried out to determine the performance of the calcination process on the rotary kiln which will affect the clinker formation in terms of processing time to the load on process costs. While the calculation method used by calculating the mass balance of each input and output component, as well as the heat balance of each input and output component. Then from the heat balance calculation can be used to calculate efficiency. From the calculation, the average actual efficiency is 60.33% with an average specific fuel consumption of 867.21 kcal/kg. The heat efficiency in the rotary kiln is not efficient because the efficiency of the rotary kiln is below the standard 80-85%.  
PENGARUH KEBOCORAN UMPAN SUSPENSION PREHEATER TERHADAP PERSEN OUTPUT PRODUK STUDI KASUS: PT. SEMEN BATURAJA Tbk Suryaningsih, Suryaningsih; Safaruddin, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 2 No 01 (2023): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v2i01.544

Abstract

Leakage in the dust transport unit to the suspension preheater is very important to note, because if the leak is in the percentage of more than 15% with a percentage of product output <55% then the operation must be stopped, because the product produced does not match the amount of raw material used. In this case, the output percentage is 65.29% and the total dust loss is 15%. In this condition the factory is still feasible to operate but with a note through extra supervision. Because if the percentage of product output continues to decrease, the operating conditions such as the amount of heat and pressure used will not be appropriate, and the resulting product (clinker) is of poor quality.
Co-Authors A. Jannifar Abdul Rahman Abdul Wahid Suleman Abdullah, Ahmad Fauzan Abimanyu, Abraham Adjie Satria, Muhammad Afriza, Afriza Agustiar agustiar Aini, I In Nurul Ajrina, Ajrina Akil, Sawir Rifatullah Alfiansyah Miftahul Rizky Alfianti, Julia Amalia, Ismi Amelia, Mutia Putri Amelia, Refika Amin, Rahmahsinar Amir, Erwin Amran Amran Anas, Ismail Andi Muhammad Ishak Ismail Andika, I Putu Juni Andre, Andi Dwi Anhar Firdaus, Anhar Anshori, Moh. Anugrah, Rendotian Ardiani, Fadila Ardisal Ardisal Ariansyah, Arbi Arnama, I Nyoman Arum, Mike Arum, Wahyuni Fajar Asep Ahmad Sopandi Asjur, Asti Vebriyanti Asnah, Megaiswari Biran Aulia, Saka Arif Azhari, Achmad Azizah, Ilma Nur Br Sitompul, Teresa Dumaria Busra Busra, Busra Cahyani, Dita Dwi Cahyani, Erna Christina, Tri Yahya Cundari, Lia Destiarini, Destiarini Dharma Putra, Muhammad Ocka Dwi Meilvinasvita Ellya Roza Fahran, M. Pramudya Niko Putra Faizah Mastutie Faizah, Lailatul Fatimah, Khoirunnisa Fatmawati, Fatmawati Febrianto, Muhammad Akbar Filza Humaira Fitri, Nabila Jannatun Halidah, Fitri Hamdani . Hanif Hasyimi Abdullah Haykal, Ahmad Herdiansyah, Cenny Dwi Cyta Heri Arius, Ozy Doresa Omelga Herlina Herlina Heru Purwanto Hismendi, Hismendi Husna, Nisa Ul Ibrahim, Anang Rohmad Iftika, Nurul Inayah, Nailil Indra Mawardi Insan, Andi Nur Ismi, Achmad Jauharoti Alfin Johandri Taufan Juhaeni, Juhaeni Khoiriyah, Mustaufiyatul Khoiriyatin, Vilda Zahrotul Kurnia, Indah Lianti Lianti Lukmanul Hakim M. Taufik Hidayat Madaniyah, Madaniyah Mahmud, Usamah Marlina Marlina Marwah S, Marwah S Mawaddah, Nurul Mega Iswari Miftahul Jannah Mizan, Mizan Mudasir Mudasir Muhammad Arif Muhammad Nasir Muhammad Nasir Muhammad Nasir Muhammad Ridho, Yogi Agung Muhammad Syuib Muhayarotun, Siti Mukaromah, Lu’lu’ul Mukhlisul Muzahid Muliati Muliati, Muliati Mustamin, Sharnawati Mutmainnah Mutmainnah Muzaki, Mukti Mabrur Muzzaki, Mukti Mabrur Nadia, Siti Nadjamuddin, Mirfaidah Niko, Niko Noer Soedjarwanto Novi Ernawati, Novi Nugraha, Bagas Dwi Nurrahmat, Fath Nur’aini, Nur’aini Oktiva, Yayuk Dwi Otari, Widiati Hairina Panjaitan, Roma Tua Perdana. Ts, Redho Pratama, Roy Bagus Prihatin, Nanang Purnama, Yuli Mulia Purwanti, Anita Aprilia Putra, Rizkika Rahayu Rahayu Rahayu, Afiyah Wildah Rahmahtrisilvia Rahmahtrisilvia Rahmatrisilvia, Rahmatrisilvia Ramadhani, Try Dhatul Ratnawati, Yuyun Dwi Rauzana, Rauzana Risa, Risa Rahayu Astija Riskiah, Delian Aupanisa Riyanto, M. Mirza Robiansyah, Robiansyah Rofiqoh, Ainur Rohadi Rohadi Rony, Zahara Tussoleha RR. Ella Evrita Hestiandari Rudi Setiawan Safitri, Dela Sair, Inayah Faradilla Salemuddin, Muh. Reski Salsabila, Zuha Prisma Sanjaya, Riska Amelia Saputra, Muhammad Angga Sari, Lufita Sari, Ricka Puspita Sati, Adinda Lara Sa’diyah, Halimatus Septian, Anang Setia Budi Shufiyah, Shara Syarifatus Sidik, Mohammad Fajar Sihabudin Sihabudin, Sihabudin Siti zakiah Sofia, Rizka Sohiron, Sohiron Sompa, Andi Sri Wahyuningsih Sriwiyati, Lilik Sukmiah, Sukmiah Suriyati, Suriyati Suryaningsih Suryaningsih Syafaruddin Syafaruddin Syamsuddin Syamsuddin Tahir, Nurya Tanthowy Z, Thoriq Verel Taufik Taufik Taufiq Triadi Tiara, Anindita Bunga Triandana, Jenita Triyadi, Danu Saputra Umbara, Nandika Berito Uswatun Chasanah Vega, Nofvia De Wijaya, Nando Yaqin, Achmad Haqqul Yuliana Yuliana Yulianti, Tunjung Sri Yulita, Mona Yunus, Andi Ibrahim Yusuf Rahman Zainal Abidin Zaini Zulfiar, Edy Zulmiyetri Zulmiyetri