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The Comparison of Ergonomics posture assessment methods
A case study of welding shop floor at University of Phayao.
1* 2 1 . . 12121
2 . . 56000 E-mail : [email protected]*
Khomkit Meksagul1*Namngern Chantaramanee2 1Medical Engineering, Faculty of Engineering, Thammasat University, Pathum Thani. 2Occupational Health and Safety, School of Medicine, University of Phayao, Phayao.
E-mail : [email protected]*
11 (Abnormal Index),OWAS (Ovako Working Posture Analysis System) REBA (Rapid Entire Body
Assessment) 3
ABSTRACT
The objectives of this research were to study ergonomics risk posture and to compare the methods for
risk assessment in welding shop. 11 engineering students were selected. The ergonomics risks were assessed by three methods (Abnormal Index, OWAS and REBA).
The results showed, All three methods give the corresponding results. Then, the method of any one method can apply to ergonomics risk assessment and unsafe posture identification in welding shop.
Keywords: Ergonomics assessment work methods welding shop
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1.
19 (Forge Welding)
20
1 2
2 Manual Metal Arc (MMA)
Shielded Metal Arc Welding (SMAW)
2.
2.1
2.2
3.
3
3.1 Abnormal Index (AI)
. .
CERGO questionnaire
8
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0 � 9 ( 0 9 )
AI8
]8,3[]7,6,5,4,2,1[ (1)
(1) (AI)
AI 0 0 AI 2
2 AI 3 3 AI 4
4>AI
3.2 OWAS(Ovako Working Posture Analysis System)
Ovako Steel Company
(Finnish Institute of Occupational Health) . .
1973
4 3
7 3
OWAS 4 1
2
3
4
3.3 REBA (Rapid Entire Body
Assessment) Dr.Sue Hignett
Dr.Lynn McAtamney
RULA (Rapid Upper Limb Assessment) 15
A
C
B
C
C C
REBA 15 1
2 � 3 4 � 7
8 � 10 11 � 15
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4.
Abnormal Index
11
5 6 Kolmogorov Smirnov
One Sample Test (Goodness of fit)
1 Kolmogorov-Smirnov test
N 5 6 Normal Parameters (Mean) 2.6020 2.2517
Std. Deviation 0.66788 1.31120
Kolmogorov-Smirnov Z .535 .506
Asymp. Sig. (2-tailed) .937 .960
1 p-value >.05
(normal curve) (AI)
2.60 2.25
(AI) Independentt-test
2 Independentt-test
Mean 2.6020 2.2517
Std. Deviation 0.66788 1.31120
F-test 3.133
Sig. 0.111 Df 9
t Stat 0.538019561
P(T<=t) one-tail 0.301805876
t Critical one-tail 1.833112923 P(T<=t) two-tail 0.603611751
t Critical two-tail 2.262157158
2 p-value >.05
(AI)
95%
(AI)
2 AI 3
1
(welding work-station)
OWAS REBA
2
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OWAS
2 1
2
10 1
3 OWAS
3 OWAS 2
REBA
4 REBA
4 REBA
4 � 7
OWAS
5.
(AI) 2 � 3
(AI) 95%
OWAS
2 REBA
4 � 7
3
OWAS (Ovako Working Posture
Analysis System) REBA (Rapid Entire Body Assessment) Abnormal Index
3
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(2550)
(Objective Assessment)
3
[1] . 2554. . 18 2556, :
http://www.dsd.go.th/index.php?option=com_kunena&func=view&catid=12&id=6245&Itemid=27.
[2] . 2538.
( ) . .
[3] . 2554. EM Ball
. 18 2556, :
http://www.eg.mahidol.ac.th/dept/egie/images/IE-NetworkArchives/2011pdf/3.WPE/ /WPE06.pdf.
[4] . 2552.
. 4. : .
[5] . 2550.
.
18 2556, :http://www.ie.psu.ac.th/ie_net/full_paper/paper/T
5/0324%20[T5][CP].pdf. [6] , .
2550.
.
, 24 � 26 2550: 1200 � 1205.
[7] . 2553. . 16 2556, :
http://pattanachai2008.blogspot.com/. [8] . 2551.
.
14 2556, : http://www.safety-
stou.com/UserFiles/File/4109%20unit%2014.pdf [9] . 2552. .
18 2556, http://www.sunetr.iepathumwan.com/index.php?
option=com_content&view=article&id=120:2011-05-20-07-52-15&catid=46-welding-engineering.
[10] Hignett, S. and McAtamney, L. 2000.
RapidEntire Body Assessment : REBA. AppliedErgonomics, 31:201�205.
[11] TU Ergonomics. 2004. Abnormal Index. Retrieved February 18, 2013, from Website:
http://ergo.engr.tu.ac.th/questionaire.php.