PART C - SIMULATED PETROLEUM LABORATORY EXERCISE
(SIMPLEX) PROCEDURES
Recommendations. The recommendation for use of a petroleum product is the prime responsibility of the
noncommissioned officer in charge (NCOIC) of a laboratory. The use of a petroleum product is based on the
results of tests performed by technicians assigned to the laboratory. Therefore, it is important to ensure the
correct test method is utilized and all test procedures are strictly followed. Evaluation of a new technician's
laboratory techniques and knowledge of appropriate procedures is essential during the first 90 days on the job, as
well as periodically thereafter. During the initial 90-day period, correct techniques can be implemented and
deficiencies eliminated. In addition, periodic checking thereafter will serve as reinforcement.
Testing Errors. It is impossible to list all the errors that may occur when performing various tests since test
methods differ greatly. However, the following list contains the general areas you should watch:
Procedures.
Is the correct ASTM or FTM standard being used as outlined in the specification?
Are all safety procedures being observed?
Is the correct sequence being followed?
Glassware.
Is the glassware correct for the test method?
Is it clean and serviceable?
Sample preparation.
Was the sample can shaken?
Was the correct amount used?
Was the sample prepared according to the test method?
- Was the sample cooled to a specific temperature range?
- Was the sample heated to a specific temperature range?
- Was the sample filtered?
- Was the sample dehydrated?
Chemicals.
Were the correct chemicals and/or indicators used?
Was the correct amount used?
Was the chemical outdated/standardized?
Was it cloudy? If so, was it filtered or was supernatant used?
If a substitute was used, is it acceptable according to ASTM procedures?
Equipment.
Bath and oven temperatures must be checked before, during, and upon completion of a test.
Correctly calibrated thermometers must be used.
Thermometers must be checked for liquid separation.
Heating rates and times must be as stated in the text.
Apparatus must be cooled to room temperature prior to performing another test.
Other.
Ensure correct size of flame (flash point, Conradson carbon residue [CCR]).
Ensure correct size of filter (millipore).
Ensure removal of air bubbles (API gravity, penetration).
Ensure correct relative centrifugal force (RCF)/revolutions per minute (RPM) (bottom sediment and
water [BS&W], precipitation number).
Ensure correct amount of pressure (gum, foam, oxidation stability).
Ensure the use of one of the following to determine the correction factor, if needed.
- Manometer.
- Barometer.
- Thermometer.
Ensure procedure is correctly reported.
QM 5184
1-6
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