1# Main Water Inlet Valve Test 

1# Main Water Inlet Valve Test 

Main Water Inlet Valve Test 

　　On May 21，2021，1# Main Water Inlet Valve of CHMC Laos Nam Ngum 4 Hydropower Station Project，got the Acceptance.

　　Composed with Laos owner's supervision representatives, representatives of CHMC Nam Ngum 4 Hydropower Station Project Department, and the supervision company, the Acceptance Team strictly carried out the acceptance standards, with the efficient cooperation of the manufacturer in the whole process. During the process, the main water inlet valve seal indicator action test, pressure test, seal test, switch test, mechanical locking device action test, etc., all passed the acceptance smoothly at one time, and all data met the specification, design and contract requirements. The excellent product quality was highly praised by the owner's supervision.

　　The main water inlet valve is one of the key core components of the hydropower station generator, with a total weight of 157t, a maximum outer diameter exceeding 2.2 m, and the total height is nearly 3.2m. It is made through casting, machining, stacking welding, finishing and other processes, and it is assembled by hundreds of work pieces, with high technical requirements and extremely challenging assembly difficulties. CHMC Nam Ngum 4 Hydropower Station Project Department, the supervision company and the manufacturer, communicated actively and cooperated closely, overcame the impact of the epidemic, took half a year to complete the work from product rough processing to delivery. The successful acceptance of1# Main Water Inlet Valve forged a solid foundation of power generation of the first unit in Laos Nam Ngum 4 Hydropower Station Project.