P4 - Ergo - Manual Material Handling

7/30/2019 P4 - Ergo - Manual Material Handling

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(See video about MH Safety)


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remember ?? HR,energ

stress level, load index combine


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1. MH activities other than lifting are minimaland

, especially when repetitivelifting tasks are performed.

2. The revised lifting equation

, such as

unexpectedly heavy loads, slips, or falls.3. The revised lifting equation as

to assess tasks involving

or

4. The revised lifting equatiothe

(pcoefficient of static frictioshoe sole and the working

5. The revised lifting equatiolifting and lowering tasks


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RWL (Recommended WeightLimit) adalah

yang dapatdiangkat oleh manusia

meskipun pekerjaantersebut dilakukan secaradan dalam

LI (Lifting Index)digununtuk mengetahui

apakaproses pengangkata

menimbulkan


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Help identifypotentiallyhazardouslifting jobs.

Help indesign/modification

process.

Help priorevaluatiolifting ta


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LC : konstanta pembebanan

HM : faktor pengali horisontal

VM : faktor pengali vertikal

DM : faktor pengali perpindahan

AM : faktor pengali asimentri

FM : faktor pengali frekuensi

CM : faktor pengali kopling (hand


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: weight of the object to be lifte(in pounds or kilograms), including the container

(acceptable to 75% of female population)


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H distance of the handfrom the mid-point betwe

Measure at the origin & dof lift.


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V distance of the handthe floor.

Measure at the origin & dof lift.


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D absolute value of thbetween vertical heights destination and origin of t


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A (asymmetry angle) tof the load relative to the

mid-sagittal plane, as defneutral body position.

Measure at the origin & d

of lift.


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F average number of liminute over a 15 minute p

Duration is classified as :Short (1 hour)Moderate (1-2 hours)Long (2-8 hours)


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C classification of the

the hand-to-object coupl

handle, cut-out, or grip).


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Jika LI 1 tidak mengandung resiko cidera tulang bela

Jika LI > 1 mengandung resiko cidera tulang belakang.


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LC = 51 lbs

HM = 10 / H = 10 / 23 = 0,43 inches

VM = 1 - (0,0075|V-30|) = 1 - (0,0075|15-30|) = 0,8875

DM= 0,82 + (1,8/D) = 0,82 + (1,8/(|15-63|)) = 0,8575

AM = 1 - (0,0032A) = 1 - (0,0032*0) = 1

FM = 1 (F


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LC = 51 lbs

HM = 10 / H = 10 / 23 = 0,43 inches

VM = 1 - (0,0075|V-30|) = 1 - (0,0075|63-30|) = 0,7525

DM = 0,82 + (1,8/D) = 0,82 + (1,8/(|15-63|) = 0,8575

AM = 1 - (0,0032A) = 1 - (0,0032*0) = 1

FM = 1 (F


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More importantly, NIOSH equation gives ways to reduce injury

reduce horizontal distance

keep load at waist height

reduce distance to be travelled

reduce twisting

add handles

reduce frequency of lifts


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P4 - Ergo - Manual Material Handling

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