UBC Baton Rouge: Chemicals Replaced, 3x Longer Intervals

Home 9 Case Studies and Results 9 UBC Baton Rouge: Chemicals Replaced, 3x Longer Intervals
Key results
0 chemicals used
2 FWG openings in 179 days
3x longer opening intervals

Bulk carrier water treatment on the fresh water generator

Bulk carrier water treatment on UBC Baton Rouge relied on chemical dosing, yet the fresh water generator was still being opened roughly once a month, with each clean taking around 24 hours. Hard scale held the plates together so tightly that removing them took significant force. During dry dock at Constanta, Romania, in November 2015, an HM100 was fitted to the FWG inlet pipe about one metre before the heat exchanger, with no extra downtime. The unit replaced the chemical dosing and tripled the cleaning interval, and plates that had needed force to separate came apart normally.

The Challenges

  • Bulk carrier water treatment was needed with the FWG opened roughly once a month
  • Each clean typically took around 24 hours
  • Hard scale deposits held the plates together
  • Plate removal required significant force
  • Chemical dosing was in continuous use

The Solution

  • Unit installed: One HM100
  • Installation point: FWG inlet pipe, about one metre before the heat exchanger
  • Installed: November 2015, during dry dock at Constanta, Romania
  • Previous treatment: continuous chemical dosing

The HM100 was fitted while the vessel was in dry dock, so the work added no downtime and the plates started from a fresh baseline. The signal disrupts the conditions that bond scale to surfaces. Chemical dosing was replaced, and bulk carrier water treatment on the FWG then extended the cleaning interval threefold, with plates separating normally at each clean.

Key Outcomes

R

No chemical dosing over the inspection period

R

FWG opened only twice in 179 days

R

FWG output stable with no loss over 179 days

R

Opening intervals 3x longer than with chemicals

Independent Verification

All results in this study were measured and verified by third-party facilities managers and technical staff.

Summary

The cleaning interval tripled and chemical dosing was replaced, ending monthly 24-hour cleans. Dry dock is the natural moment to fit treatment, because the vessel is already open and the baseline is fresh, which makes this a clean before-and-after. The engineers now plan FWG cleaning around the operating schedule rather than the other way round, and chemical stocks for the generator were run down and not reordered.

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