The construction of the second Power of Siberia gas pipeline from Russia to Northern China could take up to 10 years because it involves “tremendous work, jobs and negotiations,” the president of the research division of China's state energy giant CNPC said this week. Lu Ruquan, president of the CNPC Economics & Technology Research Institute, was speaking at the International Energy Executive Forum when he made the remarks, as quoted by Reuters. These suggest the undertaking is not yet a done deal, even though the two sides struck…