What is the primary regulation regarding the introduction of CNG into containers?

The primary regulation regarding the introduction of CNG into containers emphasizes safety as a fundamental concern. When it is deemed unsafe to introduce CNG into containers, the operation cannot proceed. This rule is designed to ensure that safety protocols are upheld to minimize the risks associated with handling compressed natural gas, which is flammable and can be hazardous if not managed properly. The focus on safety means that proper assessments must be made to identify any potential dangers before allowing the introduction process to occur.

Choosing not to allow CNG introduction when deemed unsafe underlines the importance of risk assessment and management in operations involving pressurized gases, aligning with broader safety regulations in the industry. The option regarding non-business hours does not relate directly to safety protocols, but rather to operational hours, while regulations surrounding training personnel focus on the skills required, rather than outright prohibitions based on safety evaluations. Therefore, identifying the safety-first stance as the primary regulation is key to understanding operational standards in CNG handling.