For the three different types of containment sump strainers, coefficient of correction is between 0.5 and 0.6.6.
Obviously water is being removed from the primary system, flooding into the containment and entering into the containment sump which is in the basement where all the water essentially ends up.
Since the main part of containment sump strainer is strainer-surfaced cylinder, this paper simplifies the structure from two aspects, tube structure and the influence of strainer.