An enhanced service, which includes a suite of additional tests developed to provide information on the monitoring and possible maintenance requirements of stern tubes and critical hydraulic systems.
Stern tube specialist serviceThis service has been developed to meet demands for a test regime that meets the classification societies' requirement to allow deferral of tail-shaft inspections.
An approved stern tube oil-monitoring programme is one part of classification society requirements that can enable deferral of the normal 5-year withdrawal of the tail-shaft to, in some cases, over 10 years. This will lead to considerable cost savings both in dry-dock fees and the overall maintenance budget. The stern tube oil analysis report includes the reporting of wear metals, and gives advice where results have exceeded the guidance limits set by the appropriate classification society.
N.B. A sample result which exceeds limits, does not automatically mean that the vessel requires tail-shaft withdrawal. A classification society surveyor has the discretion to defer a physical survey if the condition monitoring information contains anomalous results.
As the stern tube lubricating oil assessment is a key factor in the assessment of tail-shaft condition, it is vitally important that representative sampling is achieved from the correct part of the system at the right time. Please see the BP Marine ‘Engineers’ Pocket Guide’.
Hydraulic system specialist serviceCertain critical hydraulic systems such as those associated with cargo valves and control systems require additional specific tests to check the cleanliness (Particle Counting) of the oil and for system component wear (Ferrometric Wear Severity Index and Micro filtration). All reports are provided in an easy to read format which contains an overall summary of the condition of the oil and equipment, graphs and where appropriate, images of wear particles to help to identify likely source and type of component wear.
Our Specialist Stern Tube Service fully meets the requirements of the following major classification societies:
- Lloyd’s Register
- Bureau Vertitas
- Germanischer Lloyd