MWF systems are complex, biologically active, and constantly changing in response to conditions of use. However, MWF systems can be maintained in a stable condition over relatively long periods of time. For that to happen there should be a well thought-out and consistently enforced fluid management plan. The plan should identify key elements of the program and the individual(s) responsible for their implementation.

      The main elements of the fluid management program include the following:

      Designation of overall responsibility for performance of the system: The designated person(s) coordinating the fluid management program should receive input from all available sources along with information on finished part quality, production quantity, and production cost data. Whoever is selected to track the system’s performance should understand the chemistry involved in the metalworking processes.

      Designation of responsibility for adding materials: All system additions should be controlled and recorded by a designated person(s). Chemicals to be added may include fresh biocides, MWF fluid additives or concentrates, and waters or oils used to make up for fluid loss in the metalworking process.

      A written standard operating procedure (SOP) for testing the fluid: A procedure should be in place to test the fluids periodically to keep their performance in optimal shape. Such an SOP should include:

      •Where and when to collect the samples to be tested.

      •How they should be treated after collection.

      •Which tests to perform.

      •A specific protocol for each test performed.

      •The name of the person responsible for performing and recording the test results.

            A data collection and tracking system: To properly manage metalworking fluids, you also need to collect and track data about the operation. The data should include physical...

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