Authors: V.P. Rydlovsky, V.V. Shtayts, А.V. Lipnyakov
Abstract
The article describes the historical path of Russian Maritime Register of Shipping (RS) rules development regarding the tightness of nuclear steam supply containment system as applicable to nuclear ships and floating facilities design and testing. The proposals for the amendments to the RS documents are based on research results and data obtained during testing of three nuclear-powered icebreakers (project 22220) and floating power plant. The main proposals are as follows. Relative leakage rate at pressures up to value relevant to maximum design-basis accident (DBA) depends on different factors, so it is reasonable to obtain its values during the main test at DBA pressure as it has been done while the construction of nuclear-powered icebreakers project 22220 and floating power plant was in progress and the extrapolation of the results from low pressure tightness test is not acceptable. The allowed relative leakage rate for control test shall be obtained during the main test at specified low pressure in containment system. These proposals would bring the RS documents into alignment with actual practice of testing of nuclear steam supply containments system as applicable to nuclear ships and floating facilities.
Keywords: tightness, containment, nuclear steam supply system, nuclear-powered ship, relative leakage rate.
References
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About authors:
V.P. Rydlovsky, PhD, JSC Shipbuilding & Ship Repair Technology Center (SSTC), St. Petersburg
V.V. Shtayts, JSC "SSTC", St. Petersburg
А.V. Lipnyakov, JSC "SSTC", St. Petersburg
Issue: 68/69 (2022)
For citation: V.P. Rydlovsky, V.V. Shtayts, А.V. Lipnyakov. Proposed amendments to the RS documents regarding requirements for leak tightness of nuclear steam supply system containment. Research Bulletin by Russian Maritime Register of Shipping. 2022, No. 68/69, pp. 77-81.
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