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Made Wijana
Universitas Mataram
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Pengaruh Penyuluhan Pada Peningkatan Pemahaman Siswa Tentang Energi Terbarukan Sebagai Energi Alternatif di SMAN 4 Praya Made Wijana; I.G.A.K Chatur A.W.A; I Wayan Joniarta; I.M.A Sayoga; I.D.K Okariawan
JURNAL KARYA PENGABDIAN Vol 2, No 1 (2020): April, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

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Abstract

Pengetahuan masyarakat akan energi alternatif perlu di kembangkan sehingga pola pikir bisa dimulai sejak usia sekolah. diantaranya adalah siswa sekolah di SMAN 4 Praya. Dimana sekolah ini sangat berpotensi untuk di kembangkan menjadi sekolah Go-Green dan Enviromental Energy Friendly, sehingga bisa menjadi percontohan dalam penggunaan energi baik di lingkungan sekolah maupun di rumah siswa masing-masing. Metode yang digunakan pada program ini yaitu metode ceramah dan diskusi. Pada kegiatan ini dilakukan juga evaluasi untuk mengetahui % tingkat pemahaman siswa melalui quisioner yang dilakukan sebelum penyuluhan dan sesudah penyuluhan dengan menggunakan skala likert. Berdasarkan evaluasi tingkat pemahaman siswa, program ini dapat dinilai berhasil. Setelah dilakukan penyuluhan,  ada  peningkatan pemahaman siswa terhadap semua jenis energy rata-rata sebesar 35.40 %. Peningkatan pemahaman siswa yang tertinggi pada energy Air yaitu 37.60 %, diikuti oleh energy biomassa sebesar 36.00 %, energy surya sebesar 34.40 %   dan yang terendah adalah  energi angin yaitu sebesar 33.60 %.
ANALISA KELAYAKAN BEJANA BERTEKANAN TIPE VERTIKAL DENGAN MENGGUNAKAN SIMULASI AUTODESK INVENTOR I G.N.K. Yudhyadi; Tri Rachmanto; I Made Suartika; Made Wijana; Fahrurrozi
Energy, Materials and Product Design Vol. 1 No. 1 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

The minimum thickness of vertical type pressure vessel of column type distillation, must be planned in accordance with the recommended code of ASME (The American Society of Mechanical Engineering) VIII Div 1. Based on this code, the study aims to determine the feasibility of a pressure vessel that used by PT Pertamina (Persero). For this reason, and to be able to use this ASME code, various data was needed, especially the data sheets and some required data from the field. Based on the data that has been collected, it is then processed and was made a 3D modeling and was simulated using Autodesk Inventor software to test its feasibility. Based on the results of the study, the minimum thickness was obtained, namely head 13.66 mm, shell 13.69 mm, and skirt 3.47 mm, respectively. Taking into account the availability of materials on the market, namely SA-516 Grade 70, the recommended thickness of the head and shell sections was 14 and 5 mm, respectively. From the results of the safety analysis, it was found that at the stress of 0.217, 0.197, 0.196, and 0.195 MPa, the Von Mises stress that occurred ware 0.249; 0.226, 0.225 and 0.224 MPa. From these data, based on the distortion energy failure theory, the head and shell materials which have yield strength of 260 MPa can be categorized as very safe because it does not exceed the yield strength of the material used.
EVALUATION OF WASTE FACILITY NEEDS BASED ON THE EXISTING POSITION AND THE AMOUNT OF WASTE VOLUME IN JEMPONG BARU-MATARAM VILLAGE Made Wijana; I Made Suartika; I Wayan Joniarta
Energy, Materials and Product Design Vol. 1 No. 2 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

An increase in the volume of waste if it is not accompanied by good management, will certainly have a bad impact on reducing the quality of the environment. In Jempong Baru village which has a population of 17,172 people, but currently only has 1 TPS located in the east Jempong neighborhood which has an area of 36 m3 with a capacity of 72 m3 and 1 damtruck with a capacity of 7 m3, which should be insufficient facilities, but in fact there is no garbage overflowing out of the TPS. For this reason, it is necessary to further study the current real condition (existing position) compared to the condition if all villages dispose of waste at the TPS in the environment of the research site (alternative position), in terms of the size of the volume of waste and the number of minimal waste facilities needed. The result of this study is that a dumptruck with a capacity of 7 m3 is able to transport waste from the TPS to the landfill, which is as much as 3 times / day (3 irritations). The total amount of waste generated in Jempong Baru Village in the existing position is 28.97 m3 / day and in the alternative position of 121.47 m3 / day. In the existing position, 1 TPS with a capacity of 72 m3 and 1 dumptruck with a capacity of 21m3 / day are sufficient. Meanwhile, in the alternative position, the facilities needed to handle the volume of waste as much as 121.47 m3 / day are at least 1 TPS and 6 dumptrucks
ANALISIS PENERAPAN KONSEP ERGONOMI UNTUK MENDESAIN MESIN POTONG KULIT KERANG MUTIARA I Wayan Joniarta; Made Wijana; I G.A.K. Chatur Adi W.A.; I Gede Bawa Susana; I Made Suartika
Energy, Materials and Product Design Vol. 1 No. 2 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

The application of the concept of ergonomics is carried out on seashell craft work facilities because the work facilities used are not in accordance with the principles and norms of ergonomics feasibility. The research objective is the redesign of cutting machines and work chairs based on various kinds of information related to human factors which include designing tools and work facilities that are more effective, safe, comfortable, healthy, and efficient (ENASE). Some of the ergonomic parameters that are used as references include aspects of anthropometry, human physical performance, effectiveness-efficiency, work productivity, and the subjectivity of complaints of body pain as a result of inappropriate positions and workloads. In this study, 1 unit of circular model of shell cutting machine was designed and 1 unit of chair / seat. With anthropometric measurements of employees and through ergonomic calculations using the 5th percentile, the dimensions of the work table (cutting table) were obtained, the size of the table height was 87, 9 cm long table 110 cm and table width 64.3 cm. Then the dimensions of the chair are also obtained as follows: seat base height 32.7 cm Chair base length 70.6 cm Chair base width 32.1 cm chair back height 56.8 cm cm, seat back width 44.5 cm After applying the principles of ergonomics, based on the results of the Nordic Body Map questionnaire, it was found that the application of ergonomic principles to work tools for clam shell workers resulted in a 128% decrease in musculoskeletal complaints. In addition to this, it also resulted in a decrease in fatigue levels of 103%. . This shows that the application of ergonomic principles has a positive impact on employees
REVITALISASI PENGGUNAAN ALAT PELINDUNG DIRI UNTUK MENINGKATKAN PRODUKTIFITAS USAHA KREATIF KERAJINAN KULIT KERANG MUTIARA “CONCHA” HANDYCRAFT Jurnal Pepadu; I Wayan Joniarta; Made Wijana; I Kade Wiratama; I Dewa Ketut Okariawan
Jurnal Pepadu Vol. 4 No. 2 (2023): Jurnal Pepadu
Publisher : LPPM UNIVERSITAS MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v4i2.2278

Abstract

Revitalisasi penggunaan Alat Pelindung Diri dimaksudkan untuk mengembalikan kesadaran dan kepatuhan karyawan terhadap penggunaan Alat Pelindung diri untuk menunjang Keselamatan dan Kesehatana Kerja. Mitra program adalah UKM Concha Handycraft yang mengolah limbah kulit kerang mutiara menjadi produk asesoris untuk fashion. Permasalahan kesadaran penggunaan APD dan dampkan terhadap peningkatan produkstifitas karyawan. Metode yang digunakan yaitu penyuluhan dan edukasi serta peragaan penggunaan APD. Analisis Skala Lickert di gunakan untuk melihat perubahan –perubahan yang terjadi sebelum dan sesudah revitalisasi penggunaan APD. Peningkatan produktifitas karyawan di analisa menggunakan perbandingan jumlah produksi sebelum dan sesudah kegiatan revitalisasi. Kegiatan Pengabdian ini sudah memberikan edukasi kepada karyawan tentang pentingnya penggunan APD untuk mendukung Keselamatan dan Kesehatan Kerja (K3). Kecukupan jumlah APD di mitra UKM sudah teratasi dengan dibantu melalui bantuan pengadaan APD. Kesadaran menggunakan APD sebelum memulai pekerjaan, dapat dilihat untuk semua karyawan yang bekerja di Concha Handycraft dengan rata-rata peningkatan sebesar 48.80%. Tertinggi dalam menggunakan Sarung tangan yaitu 68 %, dan yang terendah adalah peningkatan kesadaran menggunakan clemek (Apron), sebesar 32.00 %. Perubahan-perubahan yang terjadi pada karyawan ke arah yang lebih baik akan mampu mendorong adanya peningkatan produktifitas usaha. Untuk melihat perubahan produktifitas karyawan setelah penggunaan APD terjadi perubahan kapasitas produk yang bisa di hasilkan perbulan. Kapasitas produksi memang berbeda-beda, menyesuaikan juga dengan permintaan pasar untuk setiap produk, terjadi peningkatan produkstifitas karyawan rata-rata 16,7 %.
PENINGKATAN KESADARAN AKAN KESELAMATAN DAN KESEHATAN KERJA MELALUI REVITALISASI PENGGUNAAN ALAT PELINDUNG DIRI UNTUK KARYAWAN KERAJINAN KULIT KERANG MUTIARA “CONCHA” HANDYCRAFT I Wayan Joniarta; Made Wijana; I Kade Wiratama; I Made Nuarsa; I Dewa Okariawan
Jurnal Bakti Nusa Vol. 4 No. 1 (2023): JURNAL BAKTI NUSA
Publisher : Jurusan Teknik Elektro Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/baktinusa.v4i1.80

Abstract

Concha Handycraft sebagai usaha rintisan anak muda, memproduksi produk kreatif , Usaha ini khusus mengolah limbah-limbah produksi kerajinan kulit kerang.. Bagian proses yang paling banyak menghasilkan debu adalah proses mengupas dan memotongkulit kerang..Permasalahan yang ada yaitu, ketersediaaan alat pelindung diri, kesadaran dalam penggunannya.Metode yang digunakan adalah penyuluhan penggunaan alat pelindung diri, peragaaan penggunaan langsung bekerja dan memberi bantuan untuk pengadaan alat pelindung diri.Hasil pengabdian dikaji secara kuantitatif dengan menggunakan kuisioner  SkalaLikert.Setelah kegiatan pengabdian ini terlaksana maka, sudah adapenyediaan jumlah Alat Pelindung Diri (APD)  secara memadai, bahwa ada peningkatan kecukupan APD untuk semua karyawan yang bekerja di Concha Handycraft  dengan rata-rata sebesar 46.40%. Peningkatan kecukupan APD yang tertinggi adalah pada masker  yaitu 60 %, dan yang terendah adalah peningkatan kecukupan pada penutup kepala (topi) sebesar 32.00 %. Kesadaran menggunakan APD tersebut juga meningkat, untuk semua karyawan yang bekerja di Concha Handycraft  dengan rata-rata sebesar 48.80%. Tertinggi dalam menggunakan Sarung tangan yaitu 68 %, dan yang terendah adalah peningkatan kesadaran menggunakan clemek (Apron), sebesar 32.00 %. Dari segi kenyamanan menggunakan APD bahwa ada peningkatan  untuk semua karyawan yang bekerja di Concha Handycraft  dengan rata-rata sebesar 49,60%. Untuk yang tertinggi pada penggunaan sarung tangan yaitu 60 %, dan yang terkecil adalah penggunaan clemek (Apron), sebesar 40.00 %. Perubahan-perubahan yang terjadi pada karyawan ke arah yang lebih baik akan mampu mendorong adanya peningkatan produktiftas usaha, sehingga bisa berkelanjutan.
ANALISA USAHA LAUNDRY (HOOP LAUNDRY) DI KOTA MATARAM DENGAN METODE BREAK EVEN POINT (BEP) Made Wijana; I.G.A.K. Chatur Adhi Wirya A.; B.V.S. Boli
Energy, Materials and Product Design Vol. 2 No. 1 (2023): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

Laundry is a business in the field of clothes washing services where dirty clothes are processed until clean and ready to distributed, this business is very promising because of the high level of demand for this service. Therefore, business actors in this field, namely Hoop Laundry, to continue to develop, must be supported by maximum profits by doing profit planning to find out whether this business is profitable or not.To plan profit, a tool is needed, one of which is the determination of the break- even point. In profit planning, break even point analysis is a profit planning approach that is based on the relationship between costs and income.The results of this study, it is known that the average number of kg of laundry per month produced is 1,702.52 kg with a Fixed Cost (FC) of Rp. 25,510,500 and Variable Cost (VC) of Rp. 61,828,852.5. From the laundry price per kg (p) which is IDR 6,000 the number of kg of laundry produced to reach the Break Even Point (BEP) condition is12,984 kg of laundry with a time of 7.6 months where the total expenses (TC) are equal to the total income (TR) which is IDR 77,902,498
ANALISA PERFORMA HEAT EXCHANGER TIPE SHELL AND TUBE PADA PROSES PENDINGINAN PELUMAS SAG MILL DI AREA GRINDING CONCENTRATOR AREA 130 PT. AMMAN MINERAL NUSA TENGGARA I Wayan Joniarta; Wahyudi Santosa; Made Wijana
Energy, Materials and Product Design Vol. 2 No. 1 (2023): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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Abstract

In the industrial world, the use of heat exchanger has an important role in helping the production process, especially in PT. Amman Mineral Nusa Tengggara. Heat exchanger which is used in various production process installations is basically a place to exchange energy in the from of heat from one fluid source to another. In the operation of a heat exchanger on a Semi Autogenous (SAG) mill this process is called oil conditioning, namely oil conditioning involving cooling and filtration in oil to coll the lubricant on the bearing SAG mill. This shell and tube type heat exchanger greatly influences the entire set of processes, because the operation caused by mechanical or operational failure can stop the operation of the unit. In this study do a comparison between the design specifications with the results of observations in the field in the morning and evening. Observations for 5 times were then analyzed using heat transfer to determine thermal load, heat transfer rate, heat transfer coefficient, LMTD, TDC. The results of these calculations can show that the heat exchanger in the morning has better performance. This is evident from its high effectiveness in the morning. However, the heat exchanger damages the leakage of the tube resulting in the mixing of oil with water and impurities from the cooling water quality from poor water flow can cause a decrease in performance on the heat exchanger.
PENERAPAN DESAIN ERGONOMIS MESIN POLES UNTUK KERAJINAN PERAK “UNGGA CREATIVE) UNTUK MENUNJANG PARIWISATA DI DESA UNGGA, KECAMATAN PRAYA BARAT DAYA, KABUPATEN LOMBOK TENGAH I Made Adi Sayoga; Made Wijana; I Nyoman Nugraha Ardana Putra; I Wayan Joniarta; Rizky Fathullah; Ilham Maulana Akbar
Jurnal Abdi Insani Vol 10 No 4 (2023): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v10i4.1204

Abstract

Ungga Village, Praya Barat Daya District, is a well-known silver craft center in Central Lombok. Featured products are: brooches, rings, studs, hairpins, suweng, pendants, bracelets and brooches-pendants. The jewelry is made from a combination of pearl shells which are shaped into oval, round, oblong, rectangular, triangular and half round shapes and then tied/framed with silver ornaments. PKM partner "Ungga Creative" with owner Mr Farid. The problem encountered in SMEs in the production sector is that the working position of the product polishing section is done by sitting cross-legged on the floor, so it is not comfortable for working conditions for more than 1 hour. The field of management is financial management that has not been organized so that business conditions cannot be analyzed as profit or loss. The PKM program provides a solution to SMEs for the inconvenience of working when polishing silver crafts, by designing and designing a polishing table that can be used comfortably and safely. Solutions for the field of financial management are carried out by providing training and assistance in financial management for SME owners. The steps that have been taken are designing a polishing machine based on ergonomic concepts using anthropometric data from employees. So you get the size of the silver craft polishing machine table which is designed with (dimensions: table height 60 cm, table top cover height 40 cm table length 75 cm table width 50 cm. Includes Flash-250C polishing grinder machine power 220/50 Hz 0, 25 HP 2870 rpm. The polishing machine has been handed over to PKM partners and has been able to increase partner productivity by up to 30% because the polishing process can be 2x faster than the previous work method.
ANALISIS EFISIENSI BOILER CFB UNIT 3 MENGGUNAKAN METODE LANGSUNG DI PT PLN INDONESIA POWER OMU JERANJANG I Wayan Joniarta; Rashid Ridho Al Buhori; Made Wijana
Energy, Materials and Product Design Vol. 3 No. 1 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

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A Boilers play an important role as steam power plants. A boiler is a closed vessel that is used to produce pressurized steam, where the resulting pressurized steam is used outside the boiler itself. This research aims to find out how to analyze the efficiency of CFB boilers. The analytical method used is the direct method. The results obtained show that the efficiency value of CFB boiler unit 3 of PLTU Jeranjang with a load of 25.8 MW, namely 73.17%, is quite low, this is caused by a lack of steam flow as a result of a leak in the upper boiler of PLTU Jeranjang unit 3, causing steam to come out of boiler and reduces its efficiency.
Co-Authors - - syahrul - Pandri. Pandiatmi A.A. Alit Triadi Ade Aprilian Dika Agus Sudarmawan Anak Agung Alit Triadi Anak Agung Alit Triadi Arif Mulyanto B.V.S. Boli Fahrurrozi hendry sakke tira I G.A.K Chatur Adhi W.A. I G.A.K. Chatur Adi W.A. I G.N.K. Yudhyadi I Gede Bawa Susana I Gusti Made Budiarta I Kade Wiratama I Made Adi Sayoga I Made Mara I Made Nuarsa I Made Suartika I Made Suartika I Made Suartika I Made. Suartika I Nyoman Nugraha Ardana Putra I Wayan Joniarta I.D.K. Okariawan I.G.A.K Chatur A.W.A I.M. Mara I.M.A Sayoga Ilham Maulana Akbar Jurnal Pepadu Lalu Syahrul Anwar Muhamad Sudrajadinata Panca Sunu Pamungkas Paryanto Dwi Setyawan Rashid Ridho Al Buhori Rizky Fathullah Rudy Sutanto Syahrul Syahrul Syahrul Tri Rachmanto Wahyudi Santosa Zohimundin Usman