UN Performance Packaging – Filling Limits

UN Packaging codes reveal necessary information about a package’s specifications.  They provide concise answers to questions of:
what it can hold, how much, where it was authorized, when it was made, etc.
The UN packaging code, however, doesn’t always tell the whole story…

Although there may be other test levels achieved, these may not be reflected on the packaging itself.  For example, take a steel drum that has successfully passed the most stringent tests (PG I), and is marked accordingly with the ‘X’ performance level.  This package, in all probability, can/has also passed the less rigorous tests required to meet both the ‘Y’ and ‘Z’ performance level. (Referencing a testing certificate, a test report, or the registration of a successfully tested package, will confirm this.)

So what does this all mean?
Filling limits for single or composite packaging, containing less hazardous material for which they were tested & marked (e.g. PG III material in a PG I packaging), can be re-calculated as per below.

Provided all the performance criteria can still be achieved by the higher relative density product, the following will apply:

For liquids:

a.  A packing group I packaging may be used for a packing group II material with a specific gravity not exceeding the greater of 1.8, or 1.5 times the specific gravity marked on the packaging.

b. A packing group I packaging may be used for a packing group III material with Continue Reading…