1) Calculate the annual cost to clean the tanks manually and how much is the annual saving if an automated tank washer (motorized tank washer) is applied, which cost $2,392 (US) annually?

How long do you need to cover the cost of an automated tank washer?

Assumptions:

i.Two tanks, each 6' to 7' (1.8 m to 2 m) in diameter

ii.The tanks are in use when not being cleaned

iii.Cleaning for one tank takes one maintenance person six hours

iv.One hour of production time is valued at $50 (US)

v.Labour cost is $15/hour (US)

vi.Tanks are cleaned weekly

The cost to clean these tanks manually $40,560 (US) annually

The cost to clean these tanks using an automated tank washer $2,392 (US) annually

An annual savings of $38,168 (US)

This example is based on using a motorized tank washer. The savings acquired during the first six to seven weeks of operation will offset the cost of the unit.