Work System DesignTIME

ALLOWANCESKiran Hanjar S1MS12MIA03II semMSRIT

ALLOWANCES*Allowances refers to extra time allowed, beyond completion of the task itself

*Some allowances are necessary for health and long term efficiency (like rest breaks)

*Others are pragmatically necessary, (like time for picking up dropped tools or consulting with supervisor)

*Personal , Fatigue and Delay allowances

Personal Allowances:

*Given for things such as going to restroom, drinking water, smoking and so on

*Do not vary with the task

*Values of 5%(24 minutes in a 480 minute day)

Fatigue allowances:

Compensate the person for the time lost due to fatigue

In contrast to personal allowances, which are given to everyone, fatigue allowances are given only for cause

Semiautomatic machines (Personal Allowances, delay Allowances and recover from fatigue)

Fatigue allowancesFatigue factors are grouped into three categories:

Physical

*Carrying , lifting loads and force applied

*Static load (body posture)

Mental

Environmental

*Dust , dirt and fumes

Carrying ,lifting and body force allowances

*Push :

weight (kg) % allowances

1-2 10

3-6 11

7-9 12

10-12 13

13-15 14

16-17 15

18-19 16

20 17

Contd…* Carrying load:

weight (kg) % allowances

1-2 10

3-4 11

5-6 12

7-8 13

9-10 14

11 15

12-13 16

14-15 17

16 18

17 19

18 20

19 21

20 22

Contd…

* Lifting:

* Weight (kg) % allowances

1 10

2 11

3-4 12

5-6 13

7 14

8 15

9 16

10 17

11 18

12 19

13 21

14 22

15-16 24

17 26

18 27

19 28

20 30

Posture allowances

Sitting awkwardly Standing or walking freely Ascending or Descending stairs10%

allowances

shovelling to containerCoal mining with pickaxes

12% allowances

Activity

Environmental

Noise allowances:Working in a quiet office, light assembly works

Light machine shop, office or assembly shop were noise is distraction

Wood working machine shop

10% allowances

12% allowances

Operating steam hammer in forge

Riveting in shipyard

Road drilling

18% allowances

Vibration allowances

Shovelling light materials Power sewing machine

Drill operated by one handPower drill (2 hands)

12% allowances

14% allowances

Eye strain allowance

Normal factory/office work Inspection of easily visible faults

Intermittent inspection for detailed faults

10% allowances

Engraving using an eyeglass

Continuous visual inspection (cloth)

12% allowances

Dust, Dirt and Fume allowance

Office normal light assembly Grinding or buffing

Emptying ashesFinishing weld

Dust

10% allowances

12% allowances

14% allowances

Demolishing building

Running coke from hoppers 11

Unloading cement

15% allowances

Dirt:

Stripping IC engine Working under old vehicle

Coal mines, chimney sweep with brushes

12% allowances

16% allowances

Fumes :

Lathe turning with coolantsEmulsion paint, gas cutting

Moulder providing metal & filling mould

12% allowances

15% allowances

Thank You