Unforeseen technical issues have thrown a spanner in the works prior to construction of a vast underground oil storage cavern at Jurong Island, Singapore.
Unlike previous short-term hurdles in the project's development these issues will require a significant period of time to resolve.
The S$890 million (476 million) design and build contract was awarded to South Korea's Hyundai Engineering & Construction a year and a half after the tender was first announced by state agency JTC Corporation late in 2007.
Construction was scheduled to start at the end of 2009.
The first two Jurong Rock Caverns (JRC) providing 480,000m³ of oil storage were expected to be ready in the first half of 2013, later than the originally planned 2010 start.
The entire first phase, comprising five caverns, will offer a total of 1.47 million m³ when completed in 2014. The estimated cost for phase one JRC has doubled to S$940 million.