Which standard is referenced for the approval and compliance of containers?

The standard referenced for the approval and compliance of containers is ISO 6346. This specific standard defines the identification and coding of intermodal freight containers used for international transport, ensuring that containers are recognized and can be universally understood by all players in the shipping and logistics industries. ISO 6346 outlines the requirements for containers including aspects like their classification, identification, and marking, which are essential for safety and operational efficiency in global shipping.

The other standards mentioned serve different purposes. ISO 9001 focuses on quality management systems, ensuring that organizations consistently meet customer and regulatory requirements. ISO 14001 relates to environmental management systems, aiming to help organizations improve their environmental performance. ISO 45001 addresses occupational health and safety, helping organizations manage and improve employee safety and well-being. While these standards are important in their respective areas, they do not pertain to the specific guidelines and compliance measures for shipping containers, making ISO 6346 the correct reference for this context.