API RP 1595:2006 pdf download
API RP 1595:2006 pdf download.Design, Construction, Operation,Maintenance, and lnspection of Aviation Pre-Airfield Storage Terminals.
• Sampling of aviation fuels.
• Maintaining appropriate records of inventory/quality/equipment checks.
2 Sampling
2.1 GENERAL
At appropriate stages during the handling anti storage of aviation fuels at pre-airfield terminals, fuel samples will be required for
laboratory andJor visual examination to check the quality of the fuel.
2.2 SAMPLING
Sampling shall be undertaken by competent, trained personnel using clearly defined procedures and appropriate apparatus to ensure that the sample obtained is truly representative of the material from which it has been drawn. Sampling shall be in accordance with the latest requirements of the following procedures or their equivalent.
a. Local, state and national measurement standards.
b. ASTM, Standard Pra ctice for Manual Sampling of Petrnleum and Petmleumn Prnducts, D4057.
c. API, Manual of Petroleum Measurement Standardc, Chapter 8.
For detailed sampling procedures not covered herein, reference shall he made to the above publications.
2.2.1 Basic Requirements
a. Before sampling, the sampling apparatus (including ropes or cords to suspend the sampler or other ancillary equipment) and containers shall be dry and free of any contaminating substance. All metal sampling gear shall be constructed from non-spark generating materials.
b. Sample containers shall conform to the requirements listed in 2.2.3.
c. The operator carrying out the sampling shall have hands free from any contaminating material. Clean gloves impervious to aviation fuels shall be worn to protect the operator from any health hazards.
d. Sampling points for drain samples shall be fitted with dust caps, chained to the sample connection, and the sampling pipes shall be of a material unaffected by the product and not susceptible to oxidation/corrosion (i.e. stainless steel or other suitable material). Sampling points shall be covered by dust caps at all times except while a sample is being drawn.
e. During sampling operations, the material being sampled shall be protected, as far as possible, from the effects of rain, sun, blown dust, etc. Sample containers shall he securely closed immediately after the sample has been taken.
f. It is important that samples are truly representative of the material being sampled. Samples from tanks shall he taken from a gauge hatch or other suitable opening that gives unrestricted access to the hulk of the liquid, or from a suitably designed piped sampling system.
g. Prior to sampling, apparatus for sampling liquids including the sample container shall be flushed and rinsed at least three times thoroughly with the product to be sampled and allowed to drain before use. An alternate method is filling the can with product to be sampled and allowing the can to soak for 24 hours then disposing of the fuel prior to taking the sample to be tested. This requirement shall not apply when such flushing and rinsing would nullify the purpose for which the sample is being obtained or by the nature of the material being sampled, e.g. drain samples for water and dirt content.
h. If it is suspected that a sample or set of samples is not fully representative, a further sample or set of samples shall be taken.
i. Samples for laboratory testing shall be free from dirt and water except in the case of samples specifically taken to determine the presence of such contaminants.
j. No sample container shall be completely filled with liquid. The ullage space required for certain samples and testing can be found in ASTM D4057 or API, MPMS. Chapter 8.
k. Records shall he maintained of all samples taken. Sample containers shall he clearly labeled for identification and sealed immediately after sampling. The following information shall he available as appropriate, either on the label or on associated documentation.
