Fuel Oil and Lube Oil Flashcards
What is the primary fuel used in all shipboard power plants?
Fuel, Naval Distillate (F-76)
Who must be notified for technical advice as soon as possible when using emergency substitute fuel?
TYCOM or NAVSEASYSCOM
What is the total quantity of fuel needed to conduct the Bottom Sediment and Water (BS&W) test?
100 milliliters per centrifuge tube for a total of 200 milliliters
What is the minimum temperature at which the fuel oil BS&W test is to be performed?
60 degrees F
What is the required centrifuge revolutions per minute (RPM), when conducting the fuel oil BS&W test?
About 1500 RPM
How is the BS&W reading recorded from the centrifuge tube?
The readings shall be a direct percentage of water and sediment read from the tube
What is the proper procedure, if the readings from the two tubes differ?
The readings shall be added together and divided by two to determine the BS&W
What type of fuel oil test uses the Pensky Martin closed cup tester?
Flashpoint
What is the purpose of filtering the fuel through filter paper, when conducting the flashpoint test?
To remove all water
What is the required length of the test flame on the flashpoint tester, when conducting testing?
4 mm or 5/32 in
The temperature is raised at what rate, when performing the flashpoint test?
9 degrees F. to 11 degrees F. per minute
At what temperature is the test flame applied to the sample, when conducting the flashpoint test?
When the temperature of the sample is not higher than 30 degrees F. below the expected flashpoint temperature
After the test flame is applied, what is the rate at which the temperature is increased?
In 2 degree F. increments until flashpoint is achieved
What is the minimum flashpoint of F-76?
140 degrees F
What is the minimum flashpoint of JP-5 (F-44)?
140 deg F
The flashpoint tester stirring mechanism rotates at what speed?
90 to 120 rpm
The thermometer used for flashpoint testing has a range of what?
20 to 230 deg F
What fuel oil test uses a hydrometer?
API gravity
When conducting an API gravity test, how is the hydrometer read?
After the hydrometer is released in the sample, adequate time must be allotted for the hydrometer to reach equilibrium, once equilibrium is reached the reading is recorded
What is the standard temperature for determining volume on all petroleum products?
60 deg F
The term clear refers to what, when applied to fuel oil samples?
Free of solid particulate
The term bright refers to what, when applied to fuel oil samples?
Free of water
How long is the sample bottle inverted, when conducting fuel oil clear and bright observations?
Minimum of one minute
What is the minimum amount of times that the sample bottle is inverted, during clear and bright observations?
3 times
During clear and bright observations, you notice a cloud in the sample bottle that disappears at the top of the bottle, what is this an indication of?
Water is present
What is the range of the thermometer used in API gravity testing?
-5 to 215 deg F
What is the volume of the graduated cylinder that is used for BS&W testing?
100 milliliters (ml)
