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INVESTIGATING THE IMPACT OF HERMETIC COMPARTMENTS’ SUMP RETICULATED STRAINER ON POSITIVE SUCTION HEAD OF SAFETY SYSTEMS’ PUMPS OF THE ARMENIAN NPP SECOND UNIT AT DESIGN BASIS ACCIDENT
Hovhannisyan Hovhannes Albertovich
National Polytechnic University of Armenia
Postgraduate at chair of Power engineering and environment protection
National Polytechnic University of Armenia
Postgraduate at chair of Power engineering and environment protection
Abstract
Based on Arm. NPP example the operation of the safety systems in case of the design basis loss of coolant accident is investigated. The influence of containment sump strainer implementation on the net positive suction head of high-pressure injection pumps of emergency core cooling system and spray system is determined. It is revealed that the continuous operation of the spray system leads to a decrease in pressure in the containment below atmospheric pressure, what in conjunction with the strainer installation leads to safety systems' pumps net positive suction head decrease below the allowable value.
Keywords: design basis accident, emergency core cooling system, positive suction head, reticulated strainer, spray system
Category: 05.00.00 Technical sciences
Article reference:
Investigating the impact of hermetic compartments' sump reticulated strainer on positive suction head of safety systems' pumps of the Armenian NPP second unit at design basis accident // Modern scientific researches and innovations. 2015. № 6. P. 2 [Electronic journal]. URL: https://web.snauka.ru/en/issues/2015/06/56084
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