IPTEK Journal of Proceedings Series No. (8) (2020), ISSN (2354-6026) 2nd International Conference on Industrial and System Engineering (IConISE) and 7th Annual Conference on Industrial and System Engineering (ACISE) 2020 July 22 nd – 23 rd 2020, Surabaya, Indonesia 19 Abstrak—This Rapid Entire Body Assessment (REBA) has been applied for assessing operator of porang cutting machine in agriculture/forestry. An ergonomic team, industrial engineering, mechanical engineering, chemical engineering and business statisticians test the porang (amorphophallus muelleri) cutting machine and collect individually data more than 10 examples of postures to produce a new evaluation that combines dynamic and static posture loading factors, human load interfaces (couplings), and new limb concepts the assisted gravity. position. Initial reliability for inter-observer coding shows hope, but further work is needed to establish the trust for the machinery customer. Keywords— REBA, postural analysis, manual handling, physical workload, ergonomics of appropriate technology, porang (amorphophallus muelleri). I. INTRODUCTION REVIOUS research on the ergonomic design on appropriate technology has been carried out both for fishermen on the coast [1] and farmers in forest areas [2 – 4]. Ergonomics [5] in forestry areas have been implemented for example on ergonomic, mobile, and portable porang cutting and drying machines on motorbikes [6]. Trial of making a prototype cutting machine prototype needs an analysis of the work poster load when using the machine. Postural analysis can be a good technique for assessing work activities. The risk of musculoskeletal injury associated with recorded posture, in the context of workplace assessments and ergonomic work tools, can be a major factor for implementing change, so the availability of tasks in the field is very helpful for ergonomics practitioners. Most postural analysis techniques have a variety of uses but the results can be low in detail by Hignett [7]. Needs are felt in the spectrum of postural analysis tools, especially with sensitivity to unpredictable types of work postures found in activities in forests and other agricultural industries. This leads to the application of the following postural analysis tools: REBA (Rapid Entire Body Assessment) [7]. To test the inconvenience operators in the field can use REBA, RULA, or Body Part Discomfort Interview [8]. II. OBJECTIVES The application of REBA aims to: 1. Application of a postural analysis system that is sensitive to musculoskeletal risk in a variety of porang cutting machine operation activities. 2. Dividing the body into individually encoded segments, with reference to the plane of motion. 3. Provides a rating system for muscle activity caused by static, dynamic, fast changing, or unstable postures. 4. Reflect the clutch which is important in handling the load but not always by hand. 5. Give the level of action with an indication of urgency. 6. Requires a minimum of pen and paper equipment. 7. Evaluate the workload of the porang cutting machine operator III. METHODOLOGY To evaluate the workload on the Porang cutter operator, the steps described below are to apply the REBA method by evaluating each member of the body equipped with illustrated pictures and simple tables on the Porang Cutting Machine and Dryer Operator, namely Operator (1) and Operators (2) (see figure 1). A. Group A: Assessment of limbs of the trunk, neck and legs The REBA method starts with assessing and giving individual scores to group A (trunk, neck and legs) 1) Scoring on the trunk The first body member evaluated in group A is the trunk. This will be able to determine whether the worker is doing work with an upright position or not, and then determine the size of the flexion angle or extension of the body being observed and give a score based on trunk position, as Figure 2. Scores on this body will increase, if there is a bending or twisting body position laterally (score +1). Thus the score on this body must be modified according to the position that occurs, as illustrated in Figure 2 for the assessment on the Porang Machine Cut and Dryer Operators (1), the position of the body in a natural upright position (not forming flexion or extension). So, the score on the position of the body is 1. Besides that, it does not bend or twist laterally. So, no additional score is needed. Thus, the score at such a body position is still worth 1. Whereas the assessment on the REBA: An Ergonomics Assessment for Machine Operator of Porang (Amorphophallus Muelleri) Eko Nurmianto 1 , Arino Anzip 2 , and Dwi Endah Kusrini 3 1 Department of Systems and Industrial Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 2 Department of Industrial Mechanical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 3 Department of Business Statistics, Institut Teknologi Sepuluh Nopember, Surabaya e-mail: nurmi@ie.its.ac.id P