Welding in the highlands of Papua New Guinea

This paper gives examples of the qualification of welding procedures intended for use in the highlands of Papua New Guinea. Two examples are given of welding procedures which required the development of a unique approach in each case after an early attempt using inherited standard procedures failed. The main conclusions are the requirement for caution when converting ASMEIX welding procedures for use with AS 2885.2, the requirement under the Australian Code to 'design out' the risk of hydrogen assisted cold cracking, and the importance of choosing an upper-end carbon equivalent when welding high carbon equivalent fittings