What is DHU?

DHU stands for Defect per Hundred Units. It means number of defects found or detected per 100 garments. This is also known as DPHU (Defects Per Hundred Units).

DHU value is calculated using following formula.

Defects per hundred units = (Total defects found * 100)/Total garments inspected

Illustration: Assume that a finishing checker checked 250 garments in a day. Checker found 20 defective garments and he recorded 35 defects in those defective pieces. What is the DHU of finishing process?

Solution: By using above formula DHU of the finishing goods is

= 35 * 100/250
= 14

How to measure DHU?

To measure DHU of any process, one needs to record number of total pieces checked and number of total defects are detected in the inspected garments. It is number of defects not the defective garments. One defective garment may have more than one defects. Like a checker found broken stitch, a hole and raw edges in shirt. Here checker found one defective shirt but the defective shirt contains 3 defects.

Once you have record of the following information of a lot you can measure DHU of that lot using above formula.

1.                 Total pieces inspected 

2.                 Total defects found in those inspected pieces

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 Collected  By: Md. Tarikul Islam

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