Assessment of Ergonomic Risk Factors of Manual Material Handling in the Ship Diesel Engine Assembling Processes

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6 T / C 7 \ % 3 q Table 1. Lifthg Index distribution of all manual lifting tasks

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Evaluation results by NLE No. : Handlingobjects

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Weights(kg) ; ^RWL"

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Table 2. Distribution of Lifting Index values by department

q .

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Departments No. of No. of tasks by LI range No. of U > 1

lifting

tasks < 1 1 -2 2< (%I

Large bore machining Large bore assembly 11 Snldl bore machining Pretesting

Land assembly Parts management Production I Medium processing Production II TIC bore _assembly

'U: L i N r g hdex,No. o f tasks '?6

Table 3. Summary statistics of Lifting Indices by department

No. of

i

LP

lifting I Wekhts(kg)

tasks I ^Mean + SD

Large bore machikg Large bore assembly II Small bore machining Pretesting

Land assembly Parts management Production 1 Medium processing Production II TIC bore assembly

'U: L i N r g Index,": Standard deMation

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Table 4. Results of Lifting Indexes by type of tasks or similar exposure group

Lifting

tasks

No. of : Weight of LI"

tasks I

o b j ~ t s k ) MeankSIY

^:

Sigtuticant risk factors

Washing 5

Assembhg 17

Grinding 9

Packing 2

Parts 3

management

Processing 9

Heavy objects(average 22.0 kg) Long horizontal distances(max 63 cm) i Long horizontal distances(average 40.6 cm)

Long vertical travel distances(average 39.4 cm) Long vertical travel distances(average 37.9 cm) High lifting frequency(2 Wminute)

Long vertical travel distances(average 4 1.0 cm) Heavy objects(average 22.4 kg)

High lifting frequency(2 liftdminute)

Long vertical travel distances(average 58.3 cm) Heavy objects(average 22.6 kg)

Long horizontal distances(average 45 cm)

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REFERENCES

SSq,

?;%+j.

x\x-%l E ~ Y A ~ Manual Lifting "9 41 g?F 9

7,F

+qq "-17. +z?.",FgqAJqq

X I 1998;8(1):1-23

k*-q-. 9 q 81 gqgq . k+$-y;

19%.

k%?.

3g3jq g q g - 4 . !i5-q-;

2003a.

k*-q-. k3-7-$! XI] 195

3-,

+$jY a?]$q]q9+%]7H

x i %

9 q X

371+4] $-2+q, 4193 Z-g;?

;tlll"-%zkq>-3. yqk 47.J;Lo1-q1 q]

^HJ.

k+q- ; 2003b.

4'j$$. 3Wql&lg4-1. 4IS-9hi;

1995.

A j S % , $@q. q$"Ot"ll A j 4 Q%-xy

31

+!gi'{ _?J'J+Si 3 _WJ

41 971 97. q 9 q + q q

1999;300-305

6193, q ~ B $ , 017d-% _{5, ?\q$-?}

$ l g % A J

+Jq q] g+

^ZhF

q+z:ggg,y agg- q g >

$-.

qzT."-,Fq*~j*q 9qg; 1%.

Bhattachaqa A and McClothlin JD.

Occupational Ergonomics

-

Theory and Application.

NY:

Marcel Dekker, Inc.; 19%.

National Institute for Occupational Safety and Health(N1OSH)

:

Applications Manual for the Revised NIOSH Lifting Equation. DHHS(N1OSH) Publication No. 1-52. Cincinnati, Ohio:

NIOSH; 1994.

Thomas R, Waters TR, Sherry L et al.

Evaluation of the Revised NIOSH

1999;24(4):386-395