IGEM/UP/1C - Strength testing, tightness testing and direct purging of Natural Gas and LPG meter installations - Hard copy
IGE/UP/7 Edition 2 +A: 2008 - Gas installations in timber framed and light steel framed buildings - Hard copy
IGEM/UP/9 Edition 3 - Application of natural gas & fuel oil systems to gas turbines and supplementary and auxiliary fired burners - Digital (1 year)