I would like to know the applicability of the NIOSH equation in a food grain warehouse where the activity is mostly lifting , loading and unloading gunny or plastic bags containing food grains.
You should be able to use NIOSH equation. It could be useful to check prerequisites of NISOH equation, e.g. lifting should be frontal, standing posture, etc. At least, it shows you the parameters to change (and how; e.g. decresing horizontal distance of the load from bosy.)
My only concern is about the stability of the load. If the mass center is changing, Niosh equation should not be used.
I would have thought the HSE MAC asessment tool which you will find here: http://www.hse.gov.uk/pubns/indg383.htm. Is a lot more simple and practical evidence-based and comprehensible to well informed employers
I agree about MAC. In fact, we prefer it a lot, precisely because may be used in many situations where NIOSH equation falls out of use, as stated by its manual.
The revised NIOSH lifting equation can be used to analyze lifting and lowering of bags. Hand Coupling should be set to poor due to the changing shape of the load.
Dear Dr qutubuddin
Yes you can use NIOSH lifting equation for food handler operation by measuring six factor in operations and estimate lifting index for original and final which will determine risk factor in operations. pcg,Chennai
Hi Syed,
You can download the "Application Manual for Revised NIOSH Lifting Equation" from this link http://www.cdc.gov/niosh/docs/94-110/pdfs/94-110.pdf . This manual have good details about the NIOSH lifting equation, and the example 3 on page 70, gives a material handling situation with bags.
As you may read in the Applications Manual For the Revised NIOSH Lifting Equation, section 1.2. Lifting Task Limitations, "The equation also does not apply to lifting unstable loads. For purposes of applying the equation, an unstable load would be defined as an object in which the location of the center of mass varies significantly during the lifting activity, such as some containers of liquid or incompletely filled bags, etc."
http://wonder.cdc.gov/wonder/prevguid/p0000427/p0000427.asp#head005002000000000
Yes Dr qutubddin you can use if the food bag is 25 kg or below . the load constant is 23 kg extra two kag will influence LI thus if Li remains
Hi, Qutubuddin S. M.
Yes, you can use it. Remember that when multiple tasks are involved, a composite lifting index (CLI) must be computed for the overall job.
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