How is oil sampling done?
Three sampling procedures commonly associated with engine oil sampling include: sampling a pressurized line before the system filter; using a drop tube in the dipstick tube; and procuring a sample midstream from a drain port while draining the engine.
How many types of fuel samples are there?
three
Following the new amendments there are now three defined fuel oil samples under MARPOL, each provided with a set of IMO guidelines: MARPOL delivered sample1) – this is the traditional sample taken during bunkering, accompanying the Bunker Delivery Note (BDN) and which represents the fuel oil delivered on board.
What is fuel sampling?
A “fuel sample” is comprised of three composite samples. One composite sample need to be obtained per test run. The fuel samples only need to be obtained during the stack test runs for PM, mercury, metals, and HCl/HF.
Why is oil sampling necessary?
The importance of oil sampling on a regular basis Routine oil sampling is the key to a successful maintenance program. Oil testing provides essential information to determine the condition of your equipment. Baseline of normal wear can be established during the first few months of a program.
How do you use a fuel sample during bunkering?
On completion of bunkering, mix the samples from both containers to ensure a good, representative sample from the bunkering operation.
- always ensure that the sampler valve is fully open to allow the sampler to drain.
- always close the sampler valve before blowing through the fuel lines on completion of bunkering.
How many samples are taken during bunkering?
five samples
Also, through local agents, owners should try to obtain information on local regulations/practices related to bunker sampling in that port. During and after bunkering: Number of samples to be taken: It is recommended that at least five samples are taken.
What is the pour point of fuel oil?
However, the pour point—the temperature below which crude oil becomes plastic and will not flow—is important to recovery and transport and is always determined. Pour points range from 32 °C to below −57 °C (90 °F to below −70 °F).
Where should oil samples be taken?
The best place to sample engine crankcase oil is also just before the filter. The sampling valve should be installed between the pump and filter. This sample location is highly preferred over sampling from a drain port or using a vacuum pump and tube inserted down the dipstick port.
How should bunker samples be collected?
Each sample must be sealed with the seal identification number listed on the product delivery Bunker Delivery Note (BDN). Each sample should be of sufficient quantity to perform the tests required and are normally 500-750 mL in size. The MARPOL sample must not be less than 400 mL.
What is the purpose of fuel oil sampling?
Fuel oil sampling forms the basis of compliance verification and dispute resolution relating to merchant ships bunkering. Onboard Chief Engineer should extract the proper volume of samples representing the qualities of the fuel oil delivered in the following items.
When do sampling points need to be designated for fuel oil?
For ships built on or after 1 April 2022, sampling points needs to be in place and designated upon delivery. These requirements are not applicable to a fuel oil service system for a low-flashpoint fuel, i.e. having a flashpoint less than 60oC.
How do I take samples from the fuel line?
close the sampler valve if pumping stops, to prevent the Sample being drawn back, under vacuum, into the fuel line Select three or four clean sample bottles. The exact number depends on the final destination of the various samples.
When will the IMO fuel oil sampling guidelines enter into force?
These amendments will enter into force on 1 April 2022. It introduces new requirements for fuel oil sampling points and outline methods for sampling fuel oil to validate its sulphur content. According to Akshat Arora, essentially, there are three types of fuel oil samples as defined in the IMO guidelines: