Analisis efektivitas dan ergonomi alat unwinder green hose pada proses covering di PT RCI

Alifsa, Afnan Gilang (0202) Analisis efektivitas dan ergonomi alat unwinder green hose pada proses covering di PT RCI. Bachelor thesis, Universitas Pelita Harapan.

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Abstract

DI PT RCI terdapat salah satu plant yang memproduksi berbagai macam jenis selang dengan spesifikasi yang berbeda – beda tergantung kebutuhan konsumen. Jenis selang yang dihasilkan adalah selang air, selang udara, selang bahan bakar serta selang untuk industrial yaitu selang gas LPG dan selang lainnya. Ada beberapa jenis selang yang masuk dalam proses covering. Proses covering adalah sebuah proses pelapisan pada green hose dengan chemical dan compound. Proses covering dimulai dengan tahap unwinding green hose braiding dan spiral. Pada proses ini terdapat permasalahan pada proses covering yaitu green hose terjatuh atau terlipat karena putaran loyang yang awalnya cepat menjadi pelan yang mengakibatkan green hose mengulur terlalu banyak dan terjatuh. Hal ini membuat operator harus memperbaiki green hose yang terjatuh atau terlipat dengan mengembalikan green hose keposisi semula. Maka untuk mengatasi masalah tersebut dilakukan rancang bangun alat unwinder green hose otomatis sehingga proses menjadi lebih stabil dan alat menjadi lebih ergonomis. Namun belum pernah dilakukan uji alat unwinder green hose otomatis untuk mengetahui seberapa besar peningkatan efektivitas alat baru dibandingkan dengan alat lama. Selanjutnya dilakukan analisis efektivitas alat unwinder baru dibandingkan alat unwinder lama berdasarkan skor REBA, kecepatan putaran loyang dan kecepatan produksi. Alat unwinder baru mampu menurunkan tingkat risiko cedera tinggi yaitu dari skor REBA sebesar 8-9 (risiko tinggi) menjadi 2-4 (risiko rendah hingga sedang). Hasil kecepatan putaran loyang menjadi lebih tinggi menggunakan alat unwinder baru dari yang awalnya 1-4 rpm menjadi 25 rpm. Kecepatan produksi menggunakan alat unwinder green hose otomatis meningkat sebesar 9.7% yaitu dari 62 unit/menit menjadi 68 unit/menit. / AT PT RCI there is a factory that produces various types of hoses with various specifications depending on consumer needs. The types of hoses produced are water hoses, air hoses, fuel hoses and industrial hoses, namely LPG gas hoses and other hoses. There are several types of hose that go into the covering process. The covering process is a process of coating the green hose with chemicals and compounds. The closing process begins with the stage of removing the green hose and spiral. In this process there are problems in the process including the green hose falling or folding during the process, this causes the rotation speed of the pan which was initially fast to become slow which causes the green hose to stretch too much and fall. This requires the operator to repair the green hose that has fallen or folded by returning the green hose to its original position. So, to overcome this problem, an automatic green hockey unwinder tool was designed so that the process becomes more stable, and the tool becomes more ergonomic. However, the new tool has never been tested for effectiveness to find out how much the effectiveness of the new tool increases compared to the old tool. Next, an analysis of the effectiveness of the new unwinder tool was carried out compared to the old unwinder tool based on the REBA score, pan rotation speed and production speed. The new unwinder tool can reduce the level of high risk of injury, namely from a REBA score of 8-9 (high risk) to 2-4 (low to moderate risk). The results of the baking pan rotation speed being higher using the new unwinder tool from 1-4 rpm to 25 rpm. Production speed using an automatic green hose unwinder increased by 9.7%, namely from 62 units/minute to 68 units/minute.

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