Within Docket HM-215E, further examination of Closure Instructions was addressed, and shippers were given the additional responsibility of verifying that proper packaging closure was intact at the time of closure as well as at the time of shipping — this presumes that there is generally a delay between initial closure and shipment. As stated in 215-E, the packaging manufacturer could state that "after filling and prior to transport, the shipper should check the tightness of closures to determine if the effects of heating, cooling or gasket relaxation have resulted in the needs to tighten the closure." Once again, every package that is UN approved for Dangerous Goods must be closed in accordance with the packaging manufacturers Closure Instructions. Also note that it is critical that the Closure Instructions used must be from the same design qualification period as when the packagings were manufactured.
HazMat