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Question
Q5. With reference to Boiler water tests carried out onboard:
A. Discuss the possible reasons for the following changes in boiler water test results, and state what actions should be taken in each case;
1. Reduction in total dissolved solids and chemical reserves.
2. Reduction in phosphate reserve, with increase in chlorides and total dissolved solids;
3. Reduction in alkalinity reserve only.
4. Increase in oxygen levels only.
B. State why the complete results of boiler water tests are logged or entered into a data retrieval system rather than a note being made of any particular result which may be outside set limits.