The Cycling Water Flow Modeling Test and Water Hammer Value Stimulation of CNTIC Sumbar 2x112MW project have been completed on 7th July, 2010. PLN, PLN Pusenlis, CNTIC, Tianjin Research Institute for Water Transport Engineering(TIWTE) and ZEPDI held a discussion meeting on the result and the conclusion of the test, and signed the test report as well. This Modeling Test validated the safety and security of CW Water System and the CW Pump House. The result of this test is quite helpful to optimize the preliminary design scheme and give guidance to the next construction drawing design and CW system operation.