TECHNICAL BULLETIN. Oct Applicability: All Brightoil clients ISO 8217:2010 VS ISO 8217:2010 Major Changes

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1 Oct 2015 Applicability: All Brightoil clients ISO 8217:2010 VS 2005 This memo gives a brief insight regarding ISO and 2005 version for global bunker users easier reference. ISO 8217:2010 Major Changes Distillate fuel DMZ added gas oil with minimum viscosity of 3 cst at 40 C (Requested by engine builder due to potential fuel pump seizure problems when operating on distillate fuel) DMA and DMB minimum viscosity of 2 cst at 40 C Additional tests: acid number, oxidation stability and lubricity hydrogen sulphide test method for distillate is not yet established and date for compliance is 1 July 2012

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3 Catalyst Fines To produce a low catalyst fine fuel (ie Aluminium + Silicon < 40 ppm) a supplier may centrifuge the cutter stock oil This can be represented by:- After centrifuging onboard the vessel Residual Fuel RMG has been expanded to include 180, 500, 700 cst (380 cst remains)

4 RMK now includes 500 cst RMF180 and RMH 380 and RMH 700 have been deleted Aluminium + Silicon has been reduced from 80 mg/kg to 60 mg/kg for RMG and RMK grades CCAI has been added. Potential issue for RME180 and RMK 380 when CCAI may restrict the density. It s also a restriction on high density, low viscosity fuels Additional tests; Acid number and sodium Hydrogen sulphide test method not yet widely established and date for compliance is 1 July 2012 Residual FuelAsh reduced for all grades except RMK Sulphur Limits defined by Customer the purchaser shall define the maximum sulphur content in accordance with relevant statutory limitations ULO limit modified. Contains ULO if Ca >30 and Zn > 15 or Ca >30 and P >15 General Requirements (Clause 5 of ISO8217) No bio derived material Fuels shall be free from any material that renders the fuel unacceptable for use in marine applications ISO 8217:2010 General Requirements 5 General requirements 5.1 The fuel shall conform to the characteristics and limits given in Table 1 or Table 2, as appropriate, when tested in accordance with the methods specified. 5.2 The fuel shall be a homogeneous blend of hydrocarbons derived from petroleum refining. Thisshall not preclude the incorporation of

5 additives intended to improve some aspects of the fuel's characteristics and performance. The fuel shall be free from inorganic acids and used lubricating oils. 5.3 Fuels shall be free from any material that renders the fuel unacceptable for use in marine applications. 5.4 The fuel shall be free from bio-derived materials other than 'de minimis' levels of FAME (FAME shall be in accordance with the requirements of EN or ASTM D6751). In the context of this International Standard, de minimis means an amount that does not render the fuel unacceptable for use in marine applications. The blending of FAME shall not be allowed. NOTE See Annex A. 5.5 The fuel shall not contain any additive at the concentration used in the fuel, or any added substance or chemical waste that a) jeopardizes the safety of the ship or adversely affects the performance of the machinery; or b) is harmful to personnel; or c) contributes overall to additional air pollution. Source: ISO 8217 Clause 8 refers to ISO 4259 ISO 4259 describes how test data and precision data shall be used in disputesfor a product to be considered out of specification based on a single result (upper limit)test Result >Specification max *Reproducibility examples based on a single result are:density, shall be considered to exceed a spec max of kg/m3 only if measured value is greater than kg/m3,viscosity, shall be considered to exceed a spec max of 380 cst (at 50 C) only if measured value is greater than cst sulphur, shall be considered to exceed a spec max of 1.00 % m/m only if the measured value is greater than 1.06% m/m For further advise please contact Brightoil on bunkertechnical@bwoil.com