What is the name of the procedure manual used by National Grid?

The name of the procedure manual used by National Grid is the Blue Book. This manual serves as an essential reference for personnel involved in natural gas operations and provides guidelines to ensure safety and compliance with regulatory practices. The content within the Blue Book includes standards for installation, maintenance, and inspection of gas piping systems, which are crucial for safe operations.

The use of color-coded books in the gas industry often helps to differentiate between various types of materials or regulations, with the Blue Book specifically designated for National Grid's procedures. This identification is important for those working within the industry, as it allows easy access to the necessary guidelines and standards governing their work.