Vietnam: Turbine generators must be designed to resist vibration and overspeed

According to Article 63 of Circular No. 30/2012/TT-BKHCN of the Ministry of Science and Technology of Vietnam, the design of the steam supply system, water supply system and turbine generators shall ensure that the coolant pressure boundary is not exceeded in any situation. The steam supply system must have qualified steam isolation valves capable of closing in any situation. The design and capacity steam supply system and water supply system shall be able to prevent abnormal operation from escalating to accident conditions. Turbine generators must be designed to resist vibration and overspeed. Appropriate measures shall be taken to minimize the effects of turbine-generated missiles on items important to safety.

Moreover, Article 65 of Circular No. 30/2012/TT-BKHCN also stipulates that systems shall be provided for treating and residual liquid and gaseous radioactive effluents to keep their amounts below the authorized limits, and as low as reasonably achievable. Liquid and gaseous radioactive effluents shall be treated at the plant so that exposure of the public due to discharges to the environment is as low as reasonably achievable.

The design of the plant shall incorporate suitable means to keep the release of liquid radioactive effluents to the environment below the authorized limits and as low as reasonably achievable. The cleanup equipment for the gaseous radioactive substances shall provide the necessary retention factor to keep radioactive releases below the authorized limits. The efficiency for filter systems must be testable. The performance and function of these systems must be regularly monitored over their lifetime. The filter cartridges must be able to be replaced while the air is passing.

View details at Circular No. 30/2012/TT-BKHCN of the Ministry of Science and Technology of Vietnam, effective from February 11, 2013.

Le Vy

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