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63 Cards in this Set
- Front
- Back
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Why should the AEL Free Water Detector be used?
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To detemine the presence of free water above the allowable limit (for aircraft) of 5ppm.
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How can JP-5 contaminated by JP-4, or vice versa, be detected?
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By a test for flash point and a laboratory test for distillation.
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What should be done If any contamination is discovered during the visual inspection procedure?
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Stop the fueling operation immediately and notify the pilot of the aircraft, the fuels officer. or othe designated person in charge.
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How long can a contaminated sample, after being suitably tagged, be retained?
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Until it is determined that a laboratory analysis of the sample is not required.
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What must be done once contamination is found and the system placed out of use?
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A check must be made for the source and cause of the contamination and the cause corrected.
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What usually gives a clue to the soarce aud cause of contamination?
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The type of contamination.
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If large amounts of sediment or micobiological growth are found in a sample, what would this Indicate?
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That the storage tanks and service tanks need cleaning.
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What would indicate that the Water/separator elements are ruptured or contaminated?
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Water in the fuel.
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What would indicate that the valve or blank fange Is open between two different systems?
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Mixed or commingled fuels
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What facilities are found In a good fuels lab?
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Good ventilation, hot and cold water to wash bottles and a bottle drying rack.
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What is the ccfd.
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A single unit that contains both the AELMKI and AELMK3.
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What are the AELMK1 and MK2 used to measure?
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Water contamination.
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What Is the AELMK3 used to detect?
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Sediment.
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What Is the closed cup flash point tester used to determine?
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The flash point of jet fuels.
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What is the function of the refractometer?
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To indicate the amount of fuel system icing inhibitor (FS2) present in fuels.
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What Is used to measure the'specific gravity?
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The hydrometer.
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When moving a CCFD unit from one space to another, what must be done to the unit?
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All adequate time for the unit to adjust to the same temperature as the space it is to be used. in.
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What does the detector consist of?
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A fuel sample container. a fuel filtration system employing millipore filters. and a light transmission
system. |
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How Is the level of contamination measured when using the AELMK3 (CFD)?
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By the using the principle of light transmission through a millipore filter.
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What is required after any maintenance on the AELMK3?
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Calibration.
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What Is a millipore filter?
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A paper.thin white membrane.
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Why should two millipore filters be used in series?
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The first filter traps the solid contaminates. plus fuel color effect; the second filter is subjected to clean fuel and retains only the fuel color effect.
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How Is it possible to establish the level of contamination in fuel?
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By measuring the difference betWeen the amount of light transmitted through the contaminated membrane and the clear membrane.
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When should the photocell and the light window be cleaned?
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Before measuring the contamination on the filters.
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For a proper reading on the CCFD the light Intensity' is adjusted to what reading on the milliammeter?
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0.6 milliamps.
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Why Is the entire milipore contaminated filter kept wet with pre-filtered fuel called wetting fuel?
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By keeping the entire filter wet you do not get a change of reading from the dry areas to the wet.
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How Is wetting fuel produced?
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By running the same sample through millipore filters several times until the light transmission readings for both filters are identical.
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How Is the amount of contamination determined?
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By subtracting the meter reading obtained from the contaminated filter from the meter reading obtained
from the clean filter |
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What does each contaminated fuel detector have that Is marked with the same serial number as the unit?
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Calibration chart.
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What should you do when there are occasional samples that do not fit the normal pattern?
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Establish a new or modified calibration chart.
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What can quickly pinpoint these unusual situations?
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Duplicate samples sent to the laboratory for gravimetric analysis can give a cross-check on the instrument
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What device comes with 2 Wratten calibration filters with a known contamination valve?
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The AELMK3.
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Why must the calibration filters be kept in their silver foil wrappers?
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So dust does not effect the readings you get
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What is the reason you have to calibrate an AELMK3?
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You get wear on the photovoltaic cell. which will give you improper readings if not constantly checked.
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How often must the AELMK3 be calibrated?
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Quarterly or when a part is replaced according to PMS.
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When handling the Wratten filters, the area of contact should be within how far from the edge of the filter to avoid damage to the filter's surface?
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Within 1/4 inch using forceps.
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What is required to be written on the front of the calilbration chart?
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The machine serial number and on the back it is good practice to put the serial number of the Wratten
. filters used. |
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What device was developed to measure accurately the amount of free water in fuels?
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The free water detector (AELMKI and AELMK2).
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When Is the free water detector used?
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In conjunction with the Contaminated Fuel Detector in the normal ruel inspection and surveillance programs.
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What does the free water detector consist of?
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An ullraviolet light source, a set of standards. and water detector pads.
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How should the detector pad be handled?
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With forceps only
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When running fuel through a water detector pad for a fuel water test, why must you turn the vacuum pump off Immediately after the sample has passed through the pad?
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To prevent moisture in the air from being drawn through the pad, which can cause an incorrect reading.
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According to PMS, when must the standards card In the free water detector be replaced?
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After 6 months of use.
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What is the reason for replacing the standards?
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The fluorescent inks in the pads deteriorate after prolonged exposure to ullraviolet light.
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What Is the standard flash point tester used by the Navy?
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The flash point tester by Pensky.Martens.
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What is the purpose of lts design?
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To test fuels with a flash point of 20 degrees to 700 degrees F, depending on the thermometer used
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What Is meant by the term flash point?
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The lowest temperature at which the fuel gives off a vapor that can ignite
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What Is the purpose of the refractometer kit?
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It is used 1O detennine the amount of fuel system icing inhibitor (FS2) in jet fuels.
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When using the refrcatometer, what is your source of light?
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A flucreseent or incandescent bulb.
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Were can the refractometer be used?
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In the quality surveillance lab only.
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How much fuel Is used to test for FS2?
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160 mi
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Before placing the mixed fluid on the window of the refractometer, what liquid should be used to calibrate the refractometer?
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Water.
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What Is the minimum use level for USN and USMC aircraft that require FS2 to prevent water-ice formation?
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0.03 perceIIt.
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Who should be notified if the FS2 level falls below the 0.03 percent limit?
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The appropriate Navy or Marine Corps squadron commanding officer of a squadron containing these aircraft or a designated representative.
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Whtch naval aircraft requires the use of FS2?
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S-3. US-3. and SH.6O.
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What device Is used to measure the speciflic gravity of petroleum products?
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The Hydrometer
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For standardization, when using the hydrometer, to what temperature will of your readings be converted to?
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60 degrees F.
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Where should you take your reading on the scale inside the hydrometer?
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At the surface of the fuel.
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What is the most important logbook In the division?
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The quality surveillance lab log
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When you begin the log book, where should you enter the starting date?
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on the front cover.
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How should your log entries be made?
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In ink and use only one side of each page.
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Who should be notified If the results In the log book indicate that a problem exists?
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Your supervisor
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What Is the major objective of an ABF?
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To deliver cIean, dry. and correct fuel to aircraft.
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