Which type of plants are exceptions to the markings requirement?

The markings requirement often applies to various types of plants to ensure safety and compliance with regulatory standards. Gas-manufacturing plants are recognized as exceptions to this requirement due to the unique nature of their operations.

Gas-manufacturing facilities inherently deal with gases that can pose different hazards compared to liquids or solids. Given the volatile nature of these substances, the regulations are tailored to address the specific safety needs associated with gas handling. This doesn't completely eliminate the need for safety measures, but rather indicates that their documentation and marking requirements might differ from those of other plant types which focus on liquid storage and handling.

In contrast, water treatment, heating, and chemical processing plants typically have more standard protocols related to markings. These plants often deal with liquids and chemicals that require extensive labeling to ensure safe handling, storage, and emergency response.

The exception for gas-manufacturing underscores the industry’s recognition of the distinct operational concerns present in these plants, aligning regulations to better suit the specific safety and operational needs of gas handling and processing.