Sampling Nozzle procedure can be used for fuel sampling light from the retailer to the type of dispenser.
Procedure:
– As soon as possible after the fuel is pumped and the pump has been reset connect the pump nozzle with nozzle extension
– Fill sample container slowly through the nozzle extension, up to 70-85% container capacity
– Move the nozzle extension and sample container lid, check for leaks, label and send it to the lab.
1 Scope
This practice includes information for the design, installation, testing and operation of automated equipment to extract a representative sample of oil and results in a pipe flow and storage. When sampling for the determination of the volatility of the used practice of D 5842. This practice can be used for petroleum and results that have a vapor pressure at a temperature sampling and storage 101 kPa (14.7 psi)
2 Terminology
Description of terms on this standard:
1. Automatic sampler
An apparatus used to extract a representative sample of the fluid flow in the pipe. Note: Automatic sampler usually consists of: probe, sample extractor, controller, flow measuring devices and sample containers.
2. Automatic sampling system
A system comprising: a stream of air conditioning, automatic sampler and mixing examples.
3. Probe.
Part of the automatic sampler which extended into the pipe and direct some of the fluid into the sampler extractor.
4. Sample.
A portion extracted from the total volume of which may or may not contain the constituents of comparable size such as the existence of the total volume.
5. Representative samples.
A portion extracted from the total volume containing constituents in size and comparable as any in the total volume.
6. Sample Controller.
An apparatus that determines the operation of the sample extractor.
7. Sampling.
All the stages required to obtain a representative sample contained in a pipe, tank or other container and placing the sample into the sample container in which a number of sample (test specimens) the representative can be taken for analysis.
8. Grab
The volume of extracted sample from a pipeline with a single motion or a single step of sample extractor.
9. Sample Extractor
A tool that removes sample (grab) from a piping, sample loops or tanks.
10. Stream Conditioning
Stirring of a flow such that a representative sample can be extracted.
11. Sample loop (fast loop or slip stream)
A bypass the low volume that flowed from the main pipe
3 Meaning and Purpose.
Representative examples of petroleum and its products hasinya necessary for the determination of the properties of chemistry and physics, which can be used to define or determine a standard volume, price and meet the needs of commerce and specification of which is determined.
4 Criteria Decision
Representative examples. The following criteria must satisfy to obtain a sample that is representative of a stream:
– For a homogenous mixture of oil and water, then the water is free water ter suspensions (entrained Water) must be uniformly dispersed in the dot sampling.
– Grab must be extracted and collected in a way that gives an example flow proportional representative.
– Grab must be at a consistent volume
– Sample must be kept in a container sample without changing the composition of the sample. Venting hydrocarbon vapors during filling and storage should be minimized. Examples must be mixed and handled to ensure that a representative sample can be taken for analysis.
5 Automatic Sampling System
Automatic Sampling System consists of:
– Stream conditioning of sampling locations
– Tools to extract the physics of flow
– Flow measuring device
– Control the total volume of sample extracted
– Cross-section sample