Post on 11-May-2020
transcript
PROPOSING OWAS METHOD TO MEASURE
WORKLOAD ON POSTURE‘S BODY OF THE
LAB WORKERS2nd ACSEL, Depok, December 1st 2015
Antonia Asih M; Dina Elisabet B; Duliman; Roslinormansyah; Wildan M
OWAS (Ovako Working posture Analysis System)
◇ Created in the mid 1970 by Ovako
Oy, a private steel company in
Finland.
◇ Developed as a joint effort
between Ovako Oy and the
Finnish Institute for Occupational
Health
◇ Basic concepts has been
incorporated into other posture
analysis systems (RULA, REBA,
and etc.)
Why?Job evaluation and design
Determine if current postural demands are
acceptable
Establish baseline to evaluate effectiveness of
interventions
Identify job attributes associated with awkward
postures
Evaluate intervention effectiveness by
comparing the baseline
Objectives
◇To analyze working postures of laboratory
workers to provide an overview of postural
distribution of lab workers
◇To identify the most problematic working
postures and jobs of lab workers
◇To propose recommendations for work
improvements for lab workers
◇ Observe the work postures to be analyzed
◇ Identify working postures and define of postural
codes in OWAS
◇ Classified the risk of injury based on working
posture score with OWAS table
◇ Recommend corrective action
OWAS process
Posture Classification
(Back, Arms, Legs, Force)
OWAS Table
Action Categories (AC)Action
Categories
Explanation
1 Normal and natural postures with no harmful effect on the
musculoskeletal system – No action required
2 Posture with some harmful effect on the musculoskeletal system –
corrective action required in the near future
3 Postures have a harmful effect on the musculoskeletal system –
corrective actions should be done as soon as possible
4 The load caused by these postures has a very harmful effect on the
musculoskeletal system –corrective actions for improvement required
immediately
(Karwowski & Marras, 2003)
Case StudyBack Posture : 2
Arms : 1
Legs : 2
Force : 1
Working posture OWAS
code : 2121
Action category : 2 (Posture
with some harmful effect on
the musculoskeletal system
– corrective action required
in the near futue
Corrective Action
OWAS Code: 2121
(AC: 2)
OWAS Code: 1121
(AC: 1)
Action category : 1 (Normal and natural
postures with no harmful effect on the
musculoskeletal system – No action
required
OWAS Advantages
• Relatively easy to learn and use
• Scores at each body part can be used for
“before” and “after” comparisons to
evaluate intervention effectiveness
• Relatively easy to customize system to
spesific user needs
Thanks!Any questions?