Fuel quality monitoring system
BS 2000-508:2003 pdf free.Methods of test for petroleum and its products BS 2000-508: Automotive fuels – Assessment of petrol and diesel quality – Fuel quality monitoring system (FQMS) (Identical with IP 508:2004).
The information specified in this clause as a requirement for setting up the FQMS is basically divided into two sets. The first set, described in clause 4.2, specifies the requirement for a working list which contains all the locations from which samples are to be drawn. The second set, described in clauses 4.3 to 4.6, specifies the need for information about how the dispensed fuel volumes are distributed across the country. This information is needed in order to make the results of the FOMS representative for the whole country. The information in clauses 4.3 to 4.6 should be applied in a step-wise fashion with decreasing preference in the listed order, depending on the data available in the Member State.
4.2 Requirement for a working list
A list of retail sites (3.3.1) and commercial sites (3.3.2) where automotive fuels are dispensed. This list shall contain information about the region (see 5.2) in which the site is located. This list shall be updated each year.
NOTE The retail sites may be further subdivided into main oil company sites, super-/hypermarket sites and independently owned sites, p’ovided that all necessary information detailed elsewhere in this European standard is available.
4.3 Amounts and regional distribution of automotive fuel dispensed
NOTE Depending on the comp’exity of the FOMS to be used, the amounts of fuel dispensed on a regional basis could be required.
4.3.1 Total amount of automotive fuel dispensed in the whole country, including regional distribution, if available
4.3.2 Total amount of each grade of petrol dispensed in the whole country, including regional distribution, if available
4.3.3 Total amount of diesel fuel dispensed.
4.4 Sources of the fuel and its supply and distribution patterns, if applicable
4.5 Population size and regional distribution, if applicable
4.6 Number of vehicles and their regional distribution, if applicable
4.7 List of accredited laboratories that will carry out the analytical work
Laboratories conducting testing and analyses required for monitoring fuel quality in the market, shall demonstrate their competence by complying with the minimum criteria set out in annex B. A list of accredited laboratories, qualified to carry out the tests required for the FQMS shall be compiled and maintained by the national standardisation body of the Member State or its nominated alternate (see annex B).
4.8 Register of organisations that will draw the samples
Information about organisation(s) and their qualification to draw samples is given in EN 14275. Alternatively, laboratories (see 4.7) may also be appointed to draw the samples.
5.1 Country size
Using the criteria of the amount of fuel dispensed, a decision shall be made whether the Member State is a largesize or small-size country (3.2).
Each country shall define a set of appropriate regions based on either geographic or administrative criteria, taking into consideration the procedures and criteria described in this European Standard, such as amount of fuel dispensed. number of fuel dispensing sites, population distribution, vehicle distribution.
NOTE Each region may be further subdivided into sub-regions based on marketing and distribution patterns. In such cases the FOMS would be based on samples drawn from an appropriate grouping of these regions and sub-regions.
5.3 Minimum number of samples for fuel grades with market shares of 10% and above
For fuel grades with market shares of 10% and above, the minimum number of fuel dispensing sites in any country to be sampled and tested is given in Table 1, taking into consideration the provisions given in clause 5.5.
NOTE If a country decides to assess more than this required minimum number of samples, this shouk be specified in its national annex to this European Standard.
For each model, the number of samples per grade per region or macro region (model A) is obtained by setting the number of samples (diesel fuel and petrol separately) to be proportional to the volume sales within each region. macro region, or sub-region (see 5.2)
5.5.2 Model A — macro regions
The regions within a country are grouped (preserving some geographical identity) into macro regions so that they have similar total sales volumes relative to each other and also about the same number of different supply sources (measured by the variability factor, see 3.9). This approach is recommended for all countries as it is designed to capture fuel variation efficiently and hence requires a smaller total number of samples, as reflected in Table 1.
If geographical, administrative or other circumstances do not allow fulfilment of the requirements for the design of this preferred model, model B shall be considered the next best model.
In defining the macro regions. a country shall first list all the principal supply points of petrol and diesel fuel (i.e. refineries, in-land terminals and coastal terminals) within each proposed macro region.
The variability factor for a macro region takes account of the number of different fuel types, which are distributed within the region, as well as the number of refineries (R) and supply terminals (T) in that region.
EXAMPLE If, in a certain region of this country, there is only one refinery (R) which supplies two terminals (Ti and T2), and if those three are the only supply points in that region, then the vanabality factor is 1, because the luel type” served in that region comes only from one production site. If, on the other hand, one of the two terminals (T2) is supplied by another refinery (located outside the region), then the variability factor is 2.
Therefore, the variability factor is not simply the sum of all refineries and terminals present in a certain region, but the number of different supply points that are supplying fuel from different sources.
Once these variability factors have been defined for each geographical or political region in the country, the regions shall be grouped into macro regions with approximately the same total variabihty factor and same total volumes in each macro region, thereby ensuring that the sampling proportional to fuel volumes also captures fuel variability.
An explicit example is given in annex C. If appropriate, the macro regions may be further split into sub regions by sales channel and the sampling carried out in proportion to the volumes in these sub regions. The minimum overall number of samples per grade and per season is 50 per small-size country and 100 per large-size country.
5.5.3 Model B — Non-macro region
If the construction of macro regions (based on fuel supply patterns) is not possible within a country, then the country shall be divided into regions using only geographic and administrative criteria. To ensure that fuel variability is reliably captured, a larger minimum number of samples per grade are required: 100 for small-size countries and 200 for large-size countries. An example is given in annex C.BS 2000-508 pdf free download.Fuel quality monitoring system