A new seventh edition of BiH standard BAS EN 228: 2015 Automotive fuels - Unleaded petrol - Requirements and test methods has been published. The standard has been adopted by the translation of EN 228: 2012 Automotive fuels - Unleaded petrol - Requirements and test methods.

The European standard EN 228: 2012 has been prepared by Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin”, the secretariat of which is held by NEN. The standard has been adopted by BiH Technical Committee BAS/TC 11, Petroleum and petroleum products.

BiH standard BAS EN 228: 2015 specifies requirements and test methods for marketed and delivered unleaded petrol. It is applicable to unleaded petrol for use in petrol engine vehicles designed to run on unleaded petrol.

This European Standard specifies two types of unleaded petrol:

• one type with a maximum oxygen content of 3,7 % (m/m) and a maximum ethanol content of 10,0 % (V/V) ,
• one type intended for older vehicles that are not warranted to use unleaded petrol with a high biofuel content, with a maximum oxygen content of 2,7 % (m/m) and a maximum ethanol content of 5,0 % (V/V).

The following is a list of significant technical changes between this BiH Standard and the previous edition of BAS EN 228:2011:

• New requirements following the European Directives 98/70/EC, 2009/30/EC and 2011/63/EU, are taken into account.
• Specific requirements concerning the limitation of use of methylcyclopentadienyl manganese tricarbonyl (MMT) as required by the EC have been incorporated.
• As the introduction of 10 % (V/V) of ethanol in unleaded petrol has an impact on refinery and blending processes, an update of the distillation characteristics has been considered and a new Table 3 with slightly adapted volatility classes (E70, E100 and VLI) has been introduced. Work is still ongoing to generate data that would support the idea that these changes do not affect cold starting and hot weather driveability aspects of the vehicles. These updates have been agreed upon with precaution and might be revised depending on fuel-related issues in the market.
• Further specification is given, by including separate tables on unleaded petrol grade for older vehicles that are not warranted to use unleaded petrol with a high biofuel content. A CEN/TR aiming at giving guidance on oxygenate blending has been prepared in parallel.
• Further clarification on how to determine the vapour pressure waiver for unleaded petrol containing ethanol, allowed on the market under exemption circumstances, is given in Annex A. The exact number of decimal points for the waiver has been clarified.
• Several new or revised test methods have been introduced.
• Removal of the allowance for 50 mg/kg sulfur content.
• Reference to the revised ethanol specification BAS EN 15376.

BiH standard BAS EN 228: 2015 also contains a National Annex which defined national requirements for:

• sampling;
• pump marking;
• octane number (RON and MON) and seasonal volatility.