For many years

large baseload LNG plants built on land have been the focus of the LNG industry.In recent years the industry has seen many changes which have brought new challenges and required revisiting technology selection considerations.The shale gas boom

the use of LNG as transportation fuel

and the development of liquefaction plants offshore and in arctic area

are few examples of challenges facing the industry.Modern LNG projects have different considerations related to unique feed gas compositions

driver systems and fuel requirements

and operation in an offshore motion environment

and therefore have different requirements for reliability

operability

efficiency and capacity.These new factors affect the technical decisions

and their interactions.This paper will review the key technical features of conventional large baseload plants

and discuss what needs to be re-considered to optimize CAPEX and OPEX and meet modern project needs.In addition

this paper will use two case studies to demonstrate how the right technology selection will ultimately lead to a successful project.