Container Inspection 02: (Types of Defects)

 

The most difficult part of an inspection is distinguishing between what is acceptable and what is not acceptable. We found three types of defects in container.

1) Damage:

Damage is physical defects in a container, caused by single event or series of single events, such as impact, abrasion, contamination etc.

2) Wear:

Wear is one or more physical defects caused by contentious deterioration in the physical condition of the container occurring under normal use.

3) Non-conforming repair:

Non-conforming repair is often called "improper repair". It is a condition resulting from a repair not being performed in accordance with owner standard recommended repair methods.

 

Types of damage:

Listed below are many types of damage, which may or may not be repairworthy.

Bend, Bows, Breaks, Burns, Cargo debris, standing water, Contamination, Corrosion due to foreign substance, Cracks, Cuts or tears, Dents, Failure in door operation, Floor warping, Floor delamination, Holes, Loss of component, Odor, Scratch, Gouge, Soil- sand-mud-other residue or durt, Stains, Tape or glue attached etc.

  

Types of wear:

The following defects are considered wear.

Corrosion - not due to foreign substance, Delamination or rot of floor, Color fading, Loose or missing parts, General deterioration at door gaskets and fittings etc.

We share the international standard (IICL standard) limits of damage or wear which can be accepted without repair.

Damage or wear that falls withing the limits of those criteria is called "non-repairworthy" and no need to repair.

Damage or wear which exceeds these limits is called "repairworthy" and must be repaired.

 

General Rules of Repair:

1) Damage compares with original profile of container.

2) If the damage measured exact to limiting specified then does not have to be repaired.

3) If a damage exceeds the limit of criteria, then all the adjacent components that are slightly damaged must be repaired.

4) It must restore damaged area to their original profiles.

5) It is very important to report to the owner any non-conforming repairs and instances of unusual damage or wear defects.

 

SOME PRACTICAL EXAMPLES:

Defect 01:    A container is for inspection with two separate panel dents, one of 33mm and one of 42mm depth.

Solution:    The standard tolerance for panel dent is 35mm depth. Since first dent measured less than exact limit, it need not to repair. The second is greater than the limit and therefore must require repair.

 

Defect 02:    A side panel is bowed out 30mm.

Solution:    Repair is required. Because the bow causes the panel to fall outside the ISO envelop and exceed 10mm beyond plane of side surfaces of corner fittings.

 

Defect 03:   60mm panel dent was straighten but the panel still retains a 10 mm dent.

Solution:    This is a non-conforming repair and may have to be corrected according to owner's policy.