The boiler water tests show a high and increasing level of chlorides in the boiler water. What is the most likely cause of this problem?

asked 16 Sep, 09:40

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KnowledgeBase
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The sea water leakage from the condenser makes chlorides in the boiler water to go high. This is very dangerous because corrosion may damage the boiler.
To rectify:

  1. Stop steam consumers.
  2. Open condenser steam by-pass and close condenser steam inlet and outlet valves. Release the steam pressure from the condenser.
  3. Close condenser seawater inlet and outlet valves. Drain SW from the condenser and remove side covers. Dry tubes by compressed air.
  4. Slightly open steam inlet to the condenser.
  5. Observe steam or condensate leakage from tubes and mark leaking tubes.
  6. Repair (normally in the shipyard) or plug leaking tubes from both sides.
  7. Conduct a leak test one more time to be sure no leakages left.
  8. Once confirmed that condenser leakage is rectified carry out blow down and replenish the feedwater until chlorides level drop below the acceptable level.
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answered 16 Sep, 10:01

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cheng
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