Technical Booklet L Combustion Appliances and Fuel Storage Systems·Page 35·2.50
Access to combustion appliances for maintenance
A permanent means of safe access must be provided to any combustion appliance to allow for maintenance work to be carried out.
A permanent means of safe access should be provided to a combustion appliance for maintenance.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet L - Combustion Appliances and Fuel Storage Systems.pdf