RESOLUTION MEPC.281(70)

(Adopted on 28 October 2016)

 

corrected by MEPC 70/18/Add.1/Corr.1

(3 February 2017)

 

AMENDMENTS TO THE 2014 GUIDELINES ON THE METHOD OF CALCULATION OF THE ATTAINED ENERGY EFFICIENCY DESIGN INDEX (EEDI) FOR NEW SHIPS (RESOLUTION MEPC.245(66), AS AMENDED BY RESOLUTION MEPC.263(68))

 

THE MARINE ENVIRONMENT PROTECTION COMMITTEE,

 

RECALLING article 38(a) of the Convention on the International Maritime Organization concerning the functions of the Marine Environment Protection Committee (the Committee) conferred upon it by international conventions for the prevention and control of marine pollution from ships,

 

RECALLING ALSO that it adopted, by resolution MEPC.203(62), Amendments to the annex of the Protocol of 1997 to amend the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (inclusion of regulations on energy efficiency for ships in MARPOL Annex VI),

 

NOTING that the aforementioned amendments to MARPOL Annex VI entered into force on 1 January 2013,

 

NOTING ALSO that regulation 20 (Attained Energy Efficiency Design Index (attained EEDI)) of MARPOL Annex VI, as amended, requires that the EEDI shall be calculated taking into account the guidelines developed by the Organization,

 

NOTING the 2012 Guidelines on the method of calculation of the attained Energy Efficiency Design Index (EEDI) for new ships, adopted by resolution MEPC.212(63), and, the amendments thereto, adopted by resolution MEPC.224(64),

 

NOTING FURTHER that it adopted, by resolution MEPC.245(66), the 2014 Guidelines on the method of calculation of the attained Energy Efficiency Design Index (EEDI) for new ships, and by resolution MEPC.263(68), amendments thereto,

 

RECOGNIZING that the aforementioned amendments to MARPOL Annex VI require relevant guidelines for the smooth and uniform implementation of the regulations,

 

HAVING CONSIDERED, at its seventieth session, proposed amendments to the 2014 Guidelines on the method of calculation of the attained Energy Efficiency Design Index (EEDI) for new ships, as amended,

 

1          ADOPTS amendments to the 2014 Guidelines on the method of calculation of the attained Energy Efficiency Design Index (EEDI) for new ships, as amended, as set out in the annex to the present resolution;

 

2          INVITES Administrations to take the aforementioned amendments into account when developing and enacting national laws which give force to and implement provisions set forth in regulation 20 of MARPOL Annex VI, as amended;

 

3          REQUESTS the Parties to MARPOL Annex VI and other Member Governments to bring the amendments to the attention of shipowners, ship operators, shipbuilders, ship designers and any other interested parties;

 

4          AGREES to keep these Guidelines, as amended, under review, in the light of experience gained with their implementation.

 

ANNEX

 

AMENDMENTS TO THE 2014 GUIDELINES ON THE METHOD OF CALCULATION OF THE ATTAINED ENERGY EFFICIENCY DESIGN INDEX (EEDI) FOR NEW SHIPS (RESOLUTION MEPC.245(66), AS AMENDED BY RESOLUTION MEPC.263(68))

 

1            The following text is added after 2.12.3 in the table of contents:

 

"2.12.4           f_{c bulk carriers designed to carry light cargoes}; wood chip carriers"

 

2            Paragraph .1 is replaced with the following:

 

".1          C_F is a non-dimensional conversion factor between fuel consumption measured in g and CO₂ emission also measured in g based on carbon content. The subscripts _ME(i) and _AE(i) refer to the main and auxiliary engine(s) respectively. C_F corresponds to the fuel used when determining SFC listed in the applicable test report included in a Technical File as defined in paragraph 1.3.15 of NO_X Technical Code ("test report included in a NO_X technical file" hereafter). The value of C_F is as follows:

 

 

In case of a ship equipped with a dual-fuel main or auxiliary engine, the C_F-factor for gas fuel and the C_F-factor for fuel oil should apply and be multiplied with the specific fuel oil consumption of each fuel at the relevant EEDI load point. Meanwhile, gas fuel should be identified whether it is regarded as the "primary fuel" in accordance with the formula below:

 

 

f_DFliquid = 1- f_DFgas

 

where,

 

f_DFgas is the fuel availability ratio of gas fuel corrected for the power ratio of gas engines to total engines, f_DFgas should not be greater than 1;

 

V_gas is the total net gas fuel capacity on board in m³. If other arrangements, like exchangeable (specialized) LNG tank-containers and/or arrangements allowing frequent gas refuelling are used, the capacity of the whole LNG fuelling system should be used for V_gas . The boil-off rate (BOR) of gas cargo tanks can be calculated and included to V_gas if it is connected to the fuel gas supply system (FGSS);

 

V_liquid is the total net liquid fuel capacity on board in m³ of liquid fuel tanks permanently connected to the ship's fuel system. If one fuel tank is disconnected by permanent sealing valves, V_liquid of the fuel tank can be ignored;

 

ρ_gas is the density of gas fuel in kg/m³;

 

ρ_liquid is the density of each liquid fuel in kg/m³;

 

LCV_gas is the low calorific value of gas fuel in kJ/kg;

 

LCV_liquid is the low calorific value of liquid fuel in kJ/kg;

 

K _gas is the filling rate for gas fuel tanks;

 

K_liquid is the filling rate for liquid fuel tanks;

 

P_total is the total installed engine power, P_ME and P_AE in kW;

 

P_gasfuel is the dual fuel engine installed power, P_ME and P_AE in kW;

 

 

.1       If the total gas fuel capacity is at least 50% of the fuel capacity dedicated to the dual fuel engines , namely f_DFgas ≥ 0.5, then gas fuel is regarded as the "Primary fuel," and f_DFgas = 1 and f_DFliquid = 0 for each dual fuel engine.

 

.2       If f_DFgas < 0.5, gas fuel is not regarded as the "primary fuel." The C_F and SFC in the EEDI calculation for each dual fuel engine (both main and auxiliary engines) should be calculated as the weighted average of C_F and SFC for liquid and gas mode, according to f_DFgas and fD_Fliquid, such as the original item of P_ME(i)·C_FME(i) ·SFC_ME(i) in the EEDI calculation is to be replaced by the formula below.

 

P_ME(i)·(f_DFgas(i)·(C_{FME pilot fuel(i)} ·SFC_{ME pilot fuel(i)} + C_{FME gas(i)} ·SFC_{ME gas(i)})

+ f_DFliquid(i)·C_{FME liquid(i)} ·SFC_{ME liquid(i)})

 

 

3            The following sentences are added at the end of existing paragraph 2.7.1:

 

"Reference lower calorific values of additional fuels are given in the table in paragraph 2.1 of these Guidelines. The reference lower calorific value corresponding to the conversion factor of the respective fuel should be used for calculation."

 

4            A new paragraph 2.12.4 is added after the existing paragraph 2.12.3 as follows:

 

".4          For bulk carriers having R of less than 0.55 (e.g. wood chip carriers), the following cubic capacity correction factor, fc bulk carriers designed to carry light cargoes, should apply:

 

f_{c bulk carriers designed to carry light cargoes} = R ^-0.15

 

where: R is the capacity ratio of the deadweight of the ship (tonnes) as determined by paragraph 2.4 divided by the total cubic capacity of the cargo holds of the ship (m³)."

 

5            Appendix 4 is replaced with the following:

 

"APPENDIX 4

 

EEDI CALCULATION EXAMPLES FOR USE OF DUAL FUEL ENGINES

 

Case 1: Standard Kamsarmax ship, one main engine (MDO), standard auxiliary engines (MDO), no shaft generator: