Finals - (3) NIOSH Lifting Equation

Question 1

it is a tool used by occupational health and safety professionals to assess the manual material handling risks associated with LIFTING and LOWERING tasks in the workplace

Answer 1

Revised NIOSH Lifting Equation

Question 2

what is the act of manually grasping an object with two hand and vertically moving the object without mechanical assistance?

Answer 2

lifting task

Question 3

it is widely accepted as valid in the field of occupational ergonomics, providing occupational health and safety professionals an objective ergonomic risk assessment tool for manual material handling tasks

Answer 3

NIOSH Lifting Equation

Question 4

it is a great way to identify ergonomic opportunities and prioritize ergonomic improvement efforts

Answer 4

NIOSH Lifting Equation

Question 5

what is the NIOSH Lifting Equation?

Answer 5

RWL = (LC) (HM) (VM) (DM) (AM) (FM) (CM)

Question 6

what defines the maximum acceptable weight (load) that nearly all healthy employees could lift over the course of an 8-hr shift without increasing the MSD to the lower back?

Answer 6

RWL = recommended weight limit

Question 7

this is the primary product of the NIOSH equation

Answer 7

RWL = recommended weight limit

Question 8

this answers the question “Is this weight too heavy for the task?”

Answer 8

RWL = recommended weight limit

Question 9

this answers the question “How significant is the risk?”

Answer 9

LI = lifting index

Question 10

it is calculated to provide a relative estimate of the level of physical stress and MSD risk associated with the manual lifting tasks evaluated

Answer 10

LI = lifting index

Question 11

what does a lifting index value of 1.0 or Less means?

Answer 11

nominal risk to healthy employees

Question 12

what does a lifting index value greater than 1.0 means?

Answer 12

high risk for some fraction of the population

Question 13

TRUE OR FALSE

As the LI increases, the level of injury risk decreases accordingly

Answer 13

false

decreases = increases

Question 14

what value of LI is the goal?

Answer 14

1.0 or less

Question 15

TRUE OR FALSE: Uses of RWL and LI

Individual multipliers that determine the RWL can be used to identify specific weaknesses in the design

Answer 15

true

Question 16

TRUE OR FALSE: Uses of RWL and LI

The LI can be used to estimate the relative physical stress and injury risk for a task or job.

Answer 16

true

Question 17

TRUE OR FALSE: Uses of RWL and LI

The LI can’t be used to prioritize ergonomic redesign efforts.

Answer 17

false

can’t = can

Question 18

TRUE OR FALSE: Uses of RWL and LI

The HIGHER the LI value, the SMALLER the percentage of workers capable of safely performing these lifting job demands.

Answer 18

true

Question 19

what is the maximum recommended load weight or load constant (LC) to be lifted under ideal conditions?

Answer 19

51 lbs

Question 20

what are the task variables needed to compute for RWL?

Answer 20

H , V, D, A, F, C

Question 21

what does H means?

Answer 21

HORIZONTAL location of the obj. relative to the BODY

Question 22

what does V means?

Answer 22

VERTICAL location of the obj. relative to the FLOOR

Question 23

what does D means?

Answer 23

DISTANCE the object is moved vertically

Question 24

what does A means?

Answer 24

ASYMMETRY ANGLE or twisting requirement

Question 25

what does F means?

Answer 25

FREQUENCY and duration of lifting activity

Question 26

what does C means?

Answer 26

COUPLING or quality of the workers grip on the object

Question 27

what are the additional task variables needed to calculate LI?

Answer 27

average and maximum weight of the objects lifted