Trey LT2 Flashcards
Blotter Test (Accelerated Fuel Oil Stability Test) requires how much sample, at what temp, and for how long?
50 mL for 90 minutes at 300degF
Blotter Test - How many rinses are required and with what solution?
Rinse three times with 10mL of N-Heptane
Blotter Test - What filter paper is used?
4.25cm (42.5mm) No. 1 Whatman Paper
Blotter Test - Volume of sample required?
50mL of sample to a 2.5cmx20cm
Blotter Test - When determining the ASTM color what is an acceptable/passing result?
No. 7 or lower is considered passing
How is ASTM 7039 Sulfur determined?
By using monochromatic wavelength-dispersive X-ray fluorescence (MWDXRF)
ASTM 7039 - List sulfur ranges for diesel and gasoline
Diesel between 0-100 mg/kg
Gas between 0-500 mg/kg
ASTM 7039 - What units are used to measure sulphuric concentrations?
mg/kg - rounded to the nearest 0.1mg/kg for concentrations <100mg/kg, and to the nearest 1mg/kg for concentrations >100mg/kg
What test method do we use to determine the aniline point?
Test Method E
Explain the test method to determine aniline point
Aniline and sample are mixed mechanically, then heated at a controlled rate until the two phases are miscible. The mixture is then cooled at a controlled rate and the temperature at which the two phases separate is recorded as the aniline point
What is the maximum value that can be entered when running aniline point?
338degF or 170degC
What hydrocarbon solvents are being tested for aniline point?
Aromatics (lowest aniline)
Paraffins (highest aniline)
Cycloparaffins and Olefins (between paraffins & aromatics)
QC for Aniline
Heptane - Result should be 156.7 +/- 0.4degF
Volumes used to test aniline
10mL of aniline and 10mL of sample
Aniline point test modes
Standard Mode
Repeat mode A (RPA) - ASTM color 6.5 or less
Repeat mode B (RPB) - ASTM color over 6.5
Cleaning aniline
20mL of toluene stirred for 10-20 seconds
D2163 does what?
Determination of individual Hydrocarbons in LPGs by Gas Chromatography (GC)
D2163 ranges
C1 - C5
0.01 - 100 volume % or mass %
Will not determine hydrocarbons heavier than C5 or non-hydrocarbon material
D2163 is equipped with
Flame Ionization Detector (FID)
D2163 Reagents
High purity Nitrogen/Helium to pressurize and clean LPG cylinders
What does the conductivity test determine?
Gives a measurement of the conductivity when the fuel is uncharged (electrically at rest)
Conductivity range
1 pS/m - 2000 pS/m
What happens when the conductivity is sufficiently high?
Charges dissipate fast enough to prevent accumulation and dangerously high potentials in a receiving tank are avoided
Conductivity procedure
M button 3 seconds w/o sample (zero +/- 001)
CAL button 3 seconds w/o sample (410 +/- 005)
Insert into sample covering top two holes
Press and hold M button for 3 seconds and record
Clean with Kim wipes and isopropyl alcohol and dry with nitrogen
Temperature of sample for conductivity
72degF
D3242 Acid Test Titration Solvent
1000mL of Toluene, 10mL of water, 990mL of isopropyl alcohol
Acidity in aviation turbine fuel range
0.000 mg/g - 0.100 mg/g KOH
(Present due to acid treatment or naturally occurring organic acids)
Acidity in aviation turbine fuel can cause what?
It can corrode metals that it contacts or it can impair the water separation characteristics
What size buret is used in acidity test.
10mL buret graduated in 0.05mL subdivisions
D3242 Acid Test procedure
100mL of titration solvent and 0.1mL of Naptholbenzein in clean 500mL flask
Titrate to green/green-brown color and hold 15 seconds
Record mLs used for blank
Tare flask and weigh to 100g +/-5g (Record weight)
Swirl flask vigorously (should be orange)
Titrate to green/green-brown hold 15 seconds and record mLs used
Formulate
[(A-B)N x 56.1]/W
A=KOH solution required for titration of sample
B=KOH solution required for titration of blank
N=normality of the KOH solution
W=sample used
What can throw off results of acid test?
CO2
D3606 Benzene and toluene test ranges
Benzene between 0.1-5 vol%
Toluene between 2-20% by volume
D3606 equipped with what for detection of components?
Thermal Conductivity Detector (TCD)
What is the Istd Wt of sec-butanol?
4
D3606 procedure
1mL sec-butanol into a 25mL flask
Fill to mark with sample
Invert 5 times to mix
Fill GC vial
How do you report benzene and toluene contents?
In liquid volume percent to the nearest 0.01%
D4294 Horiba Sulfur ranges
0.01-5.00%
D4294 Horiba Sulfur is measure by what?
X-ray tube
Sulfur atoms release characteristic X radiation
What cups and film are used for the Horiba D4294?
Spectro Sulfur cups No. 1850
Polypropylene Thin Film
No. 3020
D4530 MCRT (Carbon) is heated to what temperature?
500degC
Removed when <250degC
D4530 MCRT is equivalent to what?
Conradson Carbon Residue Test
D4530 MCRT- What gas is used and at what pressure?
Nitrogen (N2) is used and gauge should read 20psi +/- 1psi
D4815 Oxygenates determines what?
Ethers and alcohols in gasolines by gas chromatography
Ex: MTBE, ETBE, TAME, DIPE, methanol, ethanol, isopropanol, n-propanol, isobutanol, tert-butanol, sec-butanol, n-butanol, tert-pentanol
D4815 ether and alcohol ranges
Ethers: 0.20% - 20% by mass
Alcohols: 0.20% - 12% by mass
D4815 uses what for detection?
Flame ionization detector (FID)
1st - Polar TCEP column
2nd - Non Polar WCOT column
D4815 procedure
Tare 10mL flask with stopper
Add 0.5mL (approximately 0.4g) of DME and record weight
Fill to mark with sample and record weight
Invert 5 times and fill GC vial
D4928 Moisture Karl Fischer Titration range
0.02 - 5.0 mass or volume % in crude oils
D3606 and D4815 use what solvent to rinse?
Isooctane
Lubricity by HFRR uses how much sample and at what temperature?
2mL at 60degC
Lubricity by HFRR humidity is maintained at what percent?
30% to 85%
Lubricity by HFRR - How long is the ball rubbed against the disk?
Frequency of 50Hz for 75 minutes with a 1mm stroke
Lubricity by HFRR - Diameter and grade of steel ball
Diameter of 6.00mm
Grade 28
Lubricity by HFRR - What size is test disk?
10mm
Lubricity by HFRR - How much weight is applied to steel ball?
200g
Lubricity by HFRR - Under what magnification is the wear scar measured?
100X magnification
Lubricity by HFRR - What reagents are used to clean disks/balls?
Heptane and Acetone
D6667 Antek Sulfur range
0-100mg/kg total sulfur
D6667 Antek Sulfur - What detector is used?
Photomultiplier tube
(Sulfur is oxidized to sulfur dioxide in high temp combustion tube prior)
D6667 Antek Sulfur - QC
Sample of 25ppm will be ran once a week
D6667 Antek Sulfur - Blank is ran prior to sample. What is acceptable result for blank?
<2ppm
D6667 Antek Sulfur - If on shutdown mode how long will the instrument need to warm up before proceeding?
30 minutes
D6667 Antek Sulfur - What do you regulate pressure to on the Accura?
0.1 LPM
D7042 Dynamic Viscosity - How can the kinematic viscosity be obtained?
By dividing the dynamic viscosity by the density
Vk = Vd/D
D7042 Dynamic Viscosity - Can be ran at what temperatures?
40degC, 100degC, and -20degC
D7042 Dynamic Viscosity - What do you use to clean instrument?
Toluene first then Heptane. Connect air into injection port and run fan.
Quality factor has to be green to be clean
D7546 Moisture in Lube Oils - Ranges
10mg/kg - 100,000mg/kg
(0.001% wt./wt. - 10% wt./wt.)
D7546 Moisture in Lube Oils - What is test temperature set at?
180degC
D7546 Moisture in Lube Oils - How often do you replace the desiccant?
Every 300 tests
D7546 Moisture in Lube Oils - What reagents are used to clean vials?
Toluene and Heptane
Do NOT use acetone
D88 Saybolt Viscosity - Temperature ranges
21degC - 99degC
70degF - 210degF
D88 Saybolt Viscosity - Sample size measured?
60mL
Record time of flow in seconds to the nearest 0.1s <200, or the nearest 1.0s >200
BS&W - method valid for fuel oils in what range?
0-30% volume water and sediment
BS&W - What speed does the centrifuge spin?
1530rpm
Delivers a rcf of 600 G at the tip of the tubes based on an 18” swing diameter.
BS&W - Temperature of centrifuge
140degF (+/- 5degF)
BS&W - What size tube is used?
203mm (8 inch) tube
BS&W - Will this detect dissolved solids?
No
BS&W - Heating block temperature
140degF / 60degC
BS&W - How long must you shake sample to homogenize?
1 minute
BS&W - Force range
Between 600-800 relative centrifugal force (rcf) at the tip of the tubes
BS&W - What increments used to record?
Nearest 0.05mL from 0.1-1.0mL
Nearest 0.1mL on anything above the 1.0mL mark
D3227 Mercaptan Sulfur - Range
0.0003 - 0.01% mass
(3 - 100 weight ppm)
D3227 Mercaptan Sulfur - What reagent is used for Gas & Naphtha?
Alkaline
D3227 Mercaptan Sulfur - What reagent is used for Distillates?
Acidic
D3227 Mercaptan Sulfur - How much sample is used in Three Rivers Lab?
35 grams
D3227 Mercaptan Sulfur - What method is used to determine the amount of sulfur as mercaptan?
Titrometric
WSIM - What is the purpose of this test?
To test for the presence of surfactants in aviation turbine fuels
WSIM - What is the scale that the results are reported?
0 - 100 to the nearest whole number
WSIM - How long should instrument warm up before use?
15 minutes
WSIM - What temperature should the sample be before testing?
65degF - 85degF
WSIM - How much distilled water is added to sample?
50 microliters
WSIM - What is the minimum rating that is allowed for the test to pass?
85 MSEP
D445 Kinematic Viscosity- How can you determine dynamic viscosity?
By multiplying the kinematic viscosity by the density
Vd = Vk(D)
D445 Kinematic Viscosity- Measurement flow time should be greater than what?
200 seconds
(Flow times of less than 200s are permitted, but a kinetic energy correction shall be applied)
D5453 Sulfur- RSD% should be less than what?
5%
D5453 Sulfur - How is sulfur measured?
Injected into a high temperature combustion tube and detected by a photomultiplier tube
Volumetric Blends - What type of glassware is used when hand blending?
Class A
Volumetric Blends - What temperature should the sample, and all glassware be before blending?
0degC - 4degC
D93 Flash Point - What temperature range does this test method cover?
40degC - 370degC
(104degF - 698degF)
D93 Flash Point - How full should a sample bottle of residual fuel oil be?
85 - 95%
D93 Flash Point - How full should sample bottle be?
50 - 85%
D93 Flash Point - What temperature should sample be before transferring?
Has to be at least 32degF below expected flash point
Fluoride - How is this determined?
GC is equipped with Electrolytic Conductivity Detector (ELCD)
Fluoride - Concentration range
1ppm - 100ppm
Mini Flash - How much sample is used in a 4mL cup?
1mL
(@ 2.5degC/min)
Mini Flash - How much sample is used in a 7mL cup?
2mL
(@ 5.5degC/min)
KF/KOH - If KF is too high, what is done to the process?
Lime is added
KF/KOH - If KF & KOH is too low, what is done to the process?
Fresh KOH is added
KF/KOH - What do these tests help accomplish?
Ensures the scrubber can neutralize HF gasses
KF/KOH - KF analysis requires how much sample?
0.4 grams in a 100mL flask
(Record exact weight)
Add DI water to line and mix
Pour 50mL of sample and 50mL of TISAB II into a beaker w/stir bar.
Insert probe and measure
KF/KOH - KOH Strength requires how much sample?
0.25 grams
Fill with 60-80mLs of DI water and run on automatic
MDEA & H2S Titration- What does amine strength determine?
Strength determines viscosity
High strength = inadequate contact
Low strength = insufficient amine for absorption
MDEA & H2S Titration- What probe is used for amine strength?
pH probe
MDEA & H2S Titration- What probe is used for H2S loading?
Silver probe
MDEA & H2S Titration - Lean loading monitors what?
Performance of the regeneration process
MDEA & H2S Titration - Rich loading monitors what?
Contactor efficiency
MDEA & H2S Titration - Sample size for MDEA Strength?
0.1 - 0.2 grams
Add 70mL of DI water
MDEA & H2S Titration - Sample size for H2S Rich solvent?
0.1 - 0.4 grams
Add 70mL of NaOH solvent
MDEA & H2S Titration - Sample size for H2S Lean solvent?
5 - 30 grams
Add 70mL of NaOH solvent
Gas Analysis by GC - What is used for hydrocarbons?
Front channel equipped with FID
Gas Analysis by GC - What channel is used for materials other than hydrocarbons?
TCD channel
D5452 Particulates - What size filter is used?
Millipore filters 0.8 micron
D5452 Particulates - What is the oven temp and how long does filter remain in oven?
100degC for 30min
(Move to desiccator for 30min)
D5452 Particulates - What solvent, and how much, do you use to rinse sample container?
Petroleum Ether. 50mLs 4 times = 200mL
What can interfere with Karl Fisher data?
Mercaptan Sulfur
How is RGA reported?
Volume %
Refractive Index range?
1.33 - 1.60
What are you evaluating to determine lubricity?
Wear scar diameter
What does low amine in refinery an indication of?
Insufficient H2S absorption
Fluoride LPG - What method should you use?
Expected result of <5 - Low Method
Expected result of >100 - High Method
Karl Fischer range
2.00 - 5.00
Aniline Point used for what?
Estimate of aromatics
What does a flare indicate?
H2S present
What do you use to calibrate the DO (Dissolved Oxygen)
Fresh Air
Dissolved Oxygen- How much sample should be in the bottle?
Bottle should be filled to the very top with cap seal
What detector is used for the Karl Fischer?
Electro metric endpoint detector
Karl Fischer - How long do you homogenize the sample prior to testing?
4 minutes