ergonomic assessment of workstation and rula analysis of
TRANSCRIPT
By:
List the names of group members
Chinmai Kethineni
Saraswathi Guduri
Shiva Teja Sepuri
Sai Surya Teja Sreedhara
ERGONOMIC ASSESSMENT OF WORKSTATION AND RULA ANALYSIS OF EMPLOYEES AT JUMP TRADING
CENTER
Under the guidance of
-Dr. R. Pope-Ford
Introduction and Background
Cumulative trauma disorders (CTDs) are injuries of the musculoskeletal and nervous systems .
caused by repetitive tasks, forceful exertions, vibrations, mechanical compression. CTDs are also called as repetitive motion disorders (RMDs).
our study on CTDs ,is conducted in JUMP trading simulation and education center, Peoria.
JUMP TRADING SIMULATION
• Formed by the collaboration of OSF health care and university of Illinois college of medicine
• Deals with the simulation education and as well as research programs.
• JUMP is having three types of workstation designs: Tree Arch design Fish Bowl design Open Island design
• The designs are distinguished based on the type of alignment of the work stations, on the seating of the employees.
• initiated these three designs to check for the comfort of the employees
Objective:To check for the Influence of the work station and work performed by the employee
causing CTDs. To control the risk factors in the work environment
Methodology:To understand about the extent of CTDs in the employees we use, RULA (Rapid Upper Limb Assessment) McCauley- Bush Fuzzy Rating Scale for Evaluation of Cumulative
Trauma Disorder Risk
RISK FACTORS:
Level of CTDs are found based on survey conducted on different risk factors and the risk factors are as follows Task-Related Risk Factors Personal Risks Organizational Risk Factors
These risk factors are found by interviewing employees and they are noted based on their intensities.
CALCULATIONS
Task-Related Risk:
R1 = F(T) = a1w1 + a2w2+ a3w3 + a4w4 + a5w5 + a6w6
Personal Risk:
R2 = F(P) = b1x1+ b2x2+ b3x3+ b4x4 + b5x5 + b6x6
Organizational Risk:
R3 = F(O) = c1y1 + c2y2 + c3y3 + c4y4 + c5y5 + c6y6
The final calculations are calculated based on module risk for comparison of the results of various employees
Z = d1R1 + d2R2 + d3R3
TASK RELATED RISK FACTORS:
Ranking Factor Relative Weight
1 Awkward joint posture 0.299
2 Repetition 0.189
3 Hand tool use 0.180
4 Force 0.125
5 Task duration 0.124
6 Vibration 0.083
PERSONAL RISK FACTORS:
Ranking Factor Relative Weight
1 Previous CTD 0.383
2 Hobbies and habits 0.223
3 Diabetes 0.170
4 Thyroid problems 0.097
5 Age 0.039
6 Arthritis 0.088
ORGANISATIONAL RISK FACTORS :
Ranking Factor Relative Weight
1 Equipment 0.346
2 Production rate/layout 0.249
3 Ergonomics program 0.183
4 Peer influence 0.065
5 Training 0.059
6 CTD level 0.053
7 Awareness 0.045
MODULE RISK FACTORS:
Ranking
Module
Relative Weight
1 Task 0.637
2 Personal 0.258
3 Organizational 0.105
RESULTS:
Risks/ Subject
Task-Related Risk
Personal Risk
Organizational Risk Z Numeric Risk Level
1 0.4183 0.2076 0.5331 0.3759 0.21-0.60
2 0.1224 0.1595 0.2868 0.1492 0.0-0.20
3 0.3048 0.34 0.5685 0.3415 0.21-0.40
4 0.3048 0.0524 0.4215 0.2519 0.21-0.40
Categorization of aggregate numeric risk levels
Numeric Risk Level Expected Amount of Risk Associated with Numeric Value
0.00 - 0.20 Minimal risk: Individual should not be experiencing any conditions that indicated musculoskeletal irritation
0.21 - 0.40 Some risk: may be in the very early stages of CTD development. Individual may experience irregular irritation but is not expected to experience regular musculoskeletal irritation
0.41 - 0.60 Average risk: Individual may experience minor musculoskeletal irritation on a regular but not excessive irritation
0.61 - 0.80 High risk: Individual is expected to be experiencing regular minor or major musculoskeletal irritation
0.81 - 1.00 Very high risk: Individual is expected to presently experience ongoing or regular musculoskeletal irritation and/or medical correction for the condition
RULA
RULA was developed to evaluate the exposure of individual workers to ergonomic risk factors associated with upper extremity MSD.
The RULA ergonomic assessment tool considers biomechanical and postural load requirements of job tasks/demands on the neck, trunk and upper extremities.
A single page worksheet is used to evaluate required body posture, force, and repetition.
After the data for each region is collected and scored, tables on the form are then used to compile the risk factor variables, generating a single score that represents the level of MSD risk.
No need for an advanced degree in ergonomics or expensive equipment
Score will be assigned for each of the body regions: upper arm, lower arm, wrist, neck, trunk, and legs.
RULA SCORE BEFORE SUGGESTION-EMPLOYEE(1)
RULA SCORE BEFORE SUGGESTION-EMPLOYEE(2,3,4)
SUGGESTIONS:
Works station Support pad for keyboard Rising desk for all employees Automation in simulation testing room Periodical breaks for the employees Posture foot stool Keep hydrated once in half an hour Sit up and stop slouching
RULA SCORE AFTER SUGGESTION- EMPLOYEE(1)
RULA SCORE AFTER SUGGESTION OF EMPLOYEE(2,3,4):
FEMALE SUBJECT’S COMFORT LEVEL COMPARED TO THE MALE SUBJECTS
Female
Female
Female
Male
Male
0 0.2 0.4 0.6 0.8 1 1.2
Chart Title
Comfort Level with the work station
Gender
2 3 4 5 6 7 8 90
1
2
3
4
5
6
7
Male vs Female
Female Male
Pain Description
Pain De
scription
Female subjects are entitled to more pain when compared to male subjects. This can be attributed to their comfort with the workstation.
CONCLUSIONS:
TREE ARCH configuration Regular interaction with ergonomist Important gears or accessories like Keyboard pad to comfort their
wrists, custom made chairs to support their lumbar system An eye protection screen to reduce any optical discomforts due to
long use of computers were suggested by the team
QUALITRICS:
Qualtrics is a private research software company.
Qualtrics software enables users to do many kinds of online data collection[ and analysis including market research, customer satisfaction and loyalty, product and concept testing, employee evaluations and website feedback.
