24 Feb '17 Marorka expert savings tip #1: Lube oil pump
Many factors affect the performance of ships, and crew must constantly adapt to operate their vessel optimally and reduce OPEX and fuel costs. They focus most often on the main engine and auxiliaries, but the potential for saving extends far beyond the major consumers.
While ship operators collect a vast amount of data from their vessels, they frequently use only a small portion to drive improvement. A focused analysis of the data can reveal opportunities to make significant reductions in other areas.
The cost of generating electricity on board a vessel is a substantial part of the overall operating cost. This amount can be minimized by running auxiliary engines as efficiently as possible; reducing parallel operation at low loads will result in less fuel consumption and lower maintenance costs.
Another option would be to reduce the basic load by ensuring that the operation of all consumers reflects the operational state of the vessel.
An example which Marorka identified recently involved a main engine lube oil pump on board a capesize bulk carrier. The pump was running continuously, regardless of the ship’s operational state. It was driven by a 180kW motor with a daily fuel and OPEX cost of approximately USD 400.
The pump ran constantly while the ship was at anchor, even though the main engine was not running. Further analysis revealed that this was not an isolated case. The ME LO pump had been running for 85 days during one calendar year. The associated fuel and OPEX costs amounted to USD 34,000.
In addition to unnecessary consumption, the pressure on a standstill turbocharger without air pressure elevates the risk of damage to the TC. An event of this nature can have a major impact on the ship’s operation, especially if costly repairs are necessary.
Marorka specialists presented their findings to the ship’s operators, who updated work procedures and protocols throughout their entire fleet, leading to substantial savings.