P (t) is the SHADR-8А flowmeter failure probability; P1(t) is the probability for the first determining parameter to cross the specified performance level; P2(t) is the probability for the second determining parameter to cross the specified performance level.

Part of: Pereguda AI (2019) Reliability of the RBMK-1000 coolant flow measurement system. Nuclear Energy and Technology 5(1): 81-87. https://doi.org/10.3897/nucet.5.34296