Значение и использование
Dangerous goods (hazardous materials) regulations require performance tests to be conducted on packaging designs before being authorized for use. The regulations do not include standardized procedures for conducting performance tests and, because of this, may result in a non-uniform approach and differences in test results between testing facilities.
The purpose of this guide is to provide guidance and to establish a set of common practices for conducting internal pressure tests on packagings under going UN certification testing or packagings required to meet pressure capability requirements. For more information on the UN certification requirements, refer to Guide D4919.
1.1 This guide is intended to provide a standardizedmethod and a set of basic instructions for performing internal andhydrostatic pressure testing on packaging designs.
1.2 This guide provides information to help clarifyvarious terms used as part of the United Nations (UN) certificationprocess that may assist in determining the applicable test.
1.3 This guide provides the suggested minimuminformation that should be documented when conducting pressuretesting.
1.4 This guide provides information for recommendedequipment and fittings for conducting pressure tests.
1.5 This guide is based on the current informationcontained in 49 CFR, §173.27 and §178.605.
1.6 When testing packaging designs intended forhazardous materials (dangerous goods), the user of this guide shallbe trained in accordance with 49 CFR §172.700 and other applicable hazardous materialsregulations such as the ICAO Technical Instructions, IMDG Code, andcarrier rules such as the IATA Dangerous Goods Regulations.
1.7 The values stated in SI units are to be regardedas standard. No other units of measurement are included in thisstandard.
1.8 This standard does notpurport to address all of the safety concerns, if any, associatedwith its use. It is the responsibility of the user of this standardto establish appropriate safety and health practices and determinethe applicability of regulatory limitations prior touse.