The two holes you see in the water pump casting are called weep holes. The upper weep hole acts as an air vent. It allows air to evacuate the casting system and prevents the build up of humidity around the bearing. Also the vent allows atmospheric pressure into the pump and the seal remains seated. The lower weep hole exists to allow fluid to collect or drain out of the water pump to protect the bearing integrity. In a horizontal centrifugal pump there is little space between the bearing and the seal so fluid build-up could potentially threaten the bearing.
A locus of control orientation is a belief about whether the outcomes of our actions are contingent on what we do (internal control orientation) or on events outside our personal control (external control orientation), explained psychologist Philip Zimbardo in his 1985 book Psychology and Life.
A system of internal control consists of policies and procedures designed to provide management with reasonable assurance that the organization achieves its objectives and goals. These policies and procedures are often called controls, and collectively they comprise an organizationâs internal control. Traditionally referred to as âhard controls,â these include segregation of duties, limiting access to cash, management review and approval, and reconciliations.