DOT Interpretation Of Drop Test Height

There has been a change in the drop test requirements for Type A and Type A fissile shipping containers.  An interpretation was issued by the DOT that packages now weighing more than 11,000 pounds (the maximum weight was also changed from 10,000 to 11,000 pounds in this interpretation) have drop tests at three feet. Containers that weigh less than 11,000 pounds have a new drop test requirement of four feet. There is no grace period.  The interpretation can be found on the DOT website under Interpretations.

This interpretation did not surprise the staff of Container Products Corporation. CPC has always drop-tested packages with a mass (maximum gross weight) of less than 11,000 pounds from a height of four feet. Below is an excerpt from a CPC engineering evaluation package. Table 10 is taken from the Code of Federal Regulations:

(c)Free Drop Test. The specimen must drop onto the target so as to suffer maximum damage to the safety features being tested, and:

 (1) The height of the drop measured from the lowest point of the specimen to the upper surface of the target may not be less than the distance specified in table 10, for the applicable package mass. The target must be as specified in 173.465(c)(5).

CPC graphCPC has compiled a large database of physically tested container designs through more 35 years of innovation and testing. One example is our standard Type A, B-25 designed for a 10,000 pound payload. This packaging was physically tested and is commonly used by CPC for comparative analysis. The package as tested has a mass of 11,300 pounds. CPC dropped this package from a height of four feet; it is our standard practice to use a more conservative methodology to qualify packages.

There should be no issues with the C of C for containers designed by CPC. CPC uses the same conservative approach for the design of all of our Type A packaging. We have documentation to support each container design produced by CPC. Our reliable design methods and established quality assurance program allows our clients ship with confidence.

Container Products Corporation is NQA-1 2008/2009 version compliant.

Container Products Corporation pioneered the development of metal containers for storage, transportation, and disposal of radioactive waste and other hazardous/toxic materials. CPC’s innovative design concepts and manufacturing techniques earned CPC the enviable position as the major supplier of waste reduction equipment, decontamination equipment, and containers to the nuclear and private sector industries.  To learn more about CPC, visit, email or call (800)-635-5647.


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