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?
16 Sep '18, 13:40
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.
- Stop steam consumers.
- Open condenser steam by-pass and close condenser steam inlet and outlet valves. Release the steam pressure from the condenser.
- Close condenser seawater inlet and outlet valves. Drain SW from the condenser and remove side covers. Dry tubes by compressed air.
- Slightly open steam inlet to the condenser.
- Observe steam or condensate leakage from tubes and mark leaking tubes.
- Repair (normally in the shipyard) or plug leaking tubes from both sides.
- Conduct a leak test one more time to be sure no leakages left.
- Once confirmed that condenser leakage is rectified carry out blow down and replenish the feedwater until chlorides level drop below the acceptable level.
16 Sep '18, 14:01