This document gives guidance on hydrogen specific safety, design, construction, and performance requirements and testing of safety, control or regulating devices (hereafter referred to as controls) for burners and appliances burning gases with hydrogen content.

The following hydrogen concentrations are covered in this document:
- H2NG (hydrogen in natural gas) blends of 20 % hydrogen or
- 100 % hydrogen or
- varying blends / admixtures to natural gas.

Furthermore, it identifies the expected revision needs of the existing CEN/ TC 58 standards as well as the need of potential further new standardization deliverables.