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1、INTERNATIONAL ASSOCIATION OF CLASSIFICATION SOCIETIES Interpretations of the International Convention for the Prevention of Pollution from Ships, 1973 as modified by the Protocol of 1978 relating thereto and its Annexes IACS Ints. 1996 Contents, Page 1 CONTENTS MPC1Periodical surveys of oil content
2、meters1988 MPC2Operational manuals for oil discharge monitoring and control systems1988 MPC3Machinery space oil discharge monitoring and control systems1988 MPC4Discharge of segregated ballast1988 MPC5Minimum vertical depth of each double bottom tank or space1990 MPC6Calculation of the aggregate cap
3、acity of SBT1996 IACS Int. 1996 LLLLLL MPC1 - MPC2 Periodical surveys of oil content meters (Annex I, Regulation 15(3) A periodical survey of an oil discharge monitoring and control system would include a functional test as described in Resolution MEPC 13(19) but not a test with oil to verify the co
4、ntinuing accuracy of the oil content meter. Operational manuals for oil discharge monitoring and control systems (Annex I, Regulation 15(3) (c) For compliance with Regulation 15(3) (a) and (c) of MARPOL 73/78 - Annex I and IMO Resolutions A 496 (XII) and MEPC 13 (19), the Oil Discharge Monitoring an
5、d Control System Operational Manual is to contain all the details necessary to operate and maintain the system and should include at least the following information. The information may be grouped as indicated, or in an equivalent manner. Introduction : Particulars of the ship, together with the dat
6、e on which the system was/is to be installed and index to remainder of manual. Text of Regulations 15(3) (a) and 9(1) to be quoted in full. Section 1: Manufacturers equipment manuals for major components of the system. These may include installation, commissioning, operating and fault finding proced
7、ures for the oil content monitor. Section 2: Operations manual comprising a description of the ships cargo ballast systems, designated overboard discharges with sampling points, normal operational procedures, automatic inputs, manual inputs (as applicable), starting interlock and discharge valve con
8、trol (as applicable), override system, audible and visual alarms, outputs recorded and, where required for manual input, flow rate when discharging by gravity and when pumping ballast overboard. It should also include instructions for the discharge of oily water following mal-function of the equipme
9、nt. The above information is to be supported by copies of relevant approved diagrams. Reference may be made to Section 1, where applicable. Section 3: Technical manual comprising fault finding schedules, maintenance record and electrical, pneumatic and hydraulic schematic diagrams and descriptions o
10、f the complete system. Reference may be made to Section 1, where applicable. Section 4: Test and check-out procedures to include a functional test at installation and guidance notes for the Surveyors carrying out initial and in-service surveys. Reference may be made to Section 1, where applicable. A
11、ppendix I : Technical installation specification including location and mounting of components, arrangements for maintaining integrity of safe zones, safety requirements for electrical equipment installed in hazardous zones supported by copies of approved drawings, sample piping layout and sample de
12、lay calculations, design and arrangements of sampling probes, flushing arrangements and zero setting. Reference may be made to Section 1, where applicable. Appendix II : Copy of Type Approval Certificate and Workshop Certificates for major components. MPC1 (1988) MPC2 (1988) IACS Int. 1988 L L L L M
13、PC3 - MPC5 Machinery space oil discharge monitoring and control systems (Annex I, Regulation 16(5) As neither Regulation 16(5) nor Resolution A444(XI) specifically require it, a Classification Society cannot insist on automatic recording of date and time in an oil discharge monitoring and control sy
14、stem provided for 100 ppm oily water separating equipment. Discharge of segregated ballast (Annex I, Regulation 18(6) For new construction ships, an overboard discharge outlet for segregated ballast should be provided above the deepest ballast waterline in order to facilitate compliance with Regulat
15、ion 18(6). For other ships (without this facility), the Regulation requires that the surface of the ballast water be examined immediately before discharge, to ensure that no contamination with oil has taken place. Further guidance from the Committee on how this should be done would be appreciated, p
16、articularly in the case of double bottom tanks. One solution could be the provision of a sampling line to the oil content meter or an arrangement similar to a part flow system. Minimum vertical depth of each double bottom tank or space (Annex I, Regulation 13E (4) (b) For the purpose of determining
17、the minimum vertical depth of each double bottom tank or space to be taken into account when calculating the protecting area PAg, suction wells may be neglected, provided such wells are not excessive in area and extend below the cargo tank for a minimum distance and in no case more than half the hei
18、ght of the double bottom tank or space. MPC3 (1988) MPC4 (1988) MPC5 (1990) IACS Int. 1990 L L L L L L MPC6 Calculation of the aggregate capacity of SBT (Regulation 13F (3) (d) 4.12 In calculating the aggregate capacity under regulation 13F (3) (d), the following should be taken into account: .1the
19、capacity of engine-room ballast tanks should be excluded from the aggregate capacity of ballast tanks; .2the capacity of ballast tank located inboard of double hull should be excluded from the aggregate capacity of ballast tanks (see figure 1). Note: This IACS Unified Interpretation was submitted to
20、 IMO and is contained in MEPC/Circ. 316 of 25th July 1996. MPC6 (1996) IACS Req. 1996 FPT P/R SBT SBT E/R APT A A SBTCOTSBT SECTION A-A Fig. 1 COT Assumed double hull line SBT SBT SBTSBT SBTSBT SBTSBT SBTSBT L MPC6 .3spaces such as void spaces located in the double hull within the cargo tank length
21、should be included in the aggregate capacity of ballast tanks (see figure 2). IACS Req. 1996 MPC6 (1996) FPT VOID SPACES VOID SPACES P/R SBT SBT E/R APT SBT*SBT* SBT*SBT* B BB B SBT*SBT* COT VOID SPACESVOID SPACES SECTION B-B Fig. 2 L L MPC7 Hydrostatic Balance Loading ( Annex 1, Regulation 13 G(7)-
22、 Guidelines for approval of alternative structural or operational method, IMO Resolution MEPC 64(36) Damage and outflow criteria (as per 4 of the IMO Guidelines) .1 The original configuration is the configuration of the vessel, as covered by the IOPP certificate and the current G.A. plan prior to th
23、e application of MARPOL Regulation 13G(7). In the case of a product/crude oil carrier which operates alternatively with CBT when trading as product tanker or with COW when trading as a crude-oil tanker, the assessment in accordance with MEPC.64(36) should be done for each mode separately. Calculatio
24、n of base EOS number as per 4.1 of the IMO Guidelines (EOS1) .2 When calculating first EOS number (EOS1) as defined in 4.1 of the Guidelines, the ship is assumed to be loaded at Summer Water Line with zero trim, without consumable or ballast. .3 For the purpose of calculating EOS1, the volume of the
25、 cargo being carried by the ship is 98% of the volume of cargo and fuel oil tanks within Ltas per the original configuration of the ship. Refer to the Annex. .4 Nominal density of the cargo, rc The nominal density of the cargo to be used in the calculation of EOS1, EOS2 and EOS3 is given by the foll
26、owing formula : where D(summer) : Displacement of the ship corresponding to the maximum assigned summer load line with zero trim. LSW : Light ship weight. : 98% of the cargo and fuel oil tanks volume within Lt, in ships original configuration. V98% (original cargo and fuel oil tanks configuration wi
27、thin L ) t MPC7 (May 1998) (Corr.1 Feb. 1999) IACS Int. 1998. Corr. 1 Feb 1999 L C summerLSW V = 98% (original cargo and fuel oil tanks configuration within L ) t () 7-1 Footnote:Written applications for evaluation of tanker arrangements under MEPC.64(36) received on or after 8 MAY 1998 will be eval
28、uated in accordance with this unified interpretation unless advised otherwise by the flag Administration. MPC7 Calculation of second EOS number for the ship arranged with non-cargo side tanks as referred to in regulation 13 G(4) as per 4.2 of the IMO Guidelines (EOS2) .5 For the purpose of calculati
29、ons, in the second EOS number (EOS2), the tanker is assumed to have side protection only as referred to in paragraph 4.2 of MEPC.64(36). .6For the purpose of calculating EOS2, hypothetical side protection may be considered provided that the assumed positions of the longitudinal and transverse bulkhe
30、ads provide at least the minimum side protection required by Reg.13G(4) and are placed in the locations which lead to the lowest EOS2. For volumes and measurement of parameters,please refer to figure 1 below. FIGURE. 1 The remaining volumes of the tanks covered by hypothetical side protection are as
31、sumed to carry the same type of contents as before (i.e. water ballast tanks remain water ballast tanks and cargo oil tanks remain cargo oil tanks in remaining part). The size of the remaining part of cargo oil and/or fuel oil tanks are as follows : li: not modified. bi : reduced if hypothetical sid
32、e protection is provided throughout the entire Ltli. not modified if hypothetical side protection is provided for partial Ltli. Vi: volume of cargo in the remaining cargo oil and/or fuel oil tanks. .7 Draft and trim requirements of MARPOL, Annex I need not be taken into account for the purpose of ca
33、lculating EOS2. Refer to the Annex. WBT WBT COT COT 0.30Lt Lt MPC7 (contd) IACS Int. 1998, Corr. 1 Feb 1999 L 7-2 MPC7 .8 When calculating EOS2, the ship is assumed evenkeel at the draft of the loaded condition corresponding to the ship so arranged to comply with Reg.13G(4) without any consumable no
34、r ballast. Refer to paragraph .6 and to the Annex. Calculation of third EOS number for hydrostatic balance method as per 4.3 of the IMO Guidelines (EOS3). .9 For the purpose of calculating EOS3, the draft is that corresponding to the Hydrostatic Balance Loading (HBL) configuration. Ballast may be us
35、ed to achieve an increased draft only in determining EOS3. Filling levels in the tanks identified for HBL should be equal to the maximum level determined by the formula shown in the Appendix to the Guidelines using uniform nominal oil density and corresponding draft. Refer to the Annex. Calculation
36、of outflow in case of side damage as per 5.2 of the IMO Guidelines. .11 10 Distance from the hull boundary to the tank plating, si: siis the minimum distance from the hull plating to the tank boundary measured at right angle to the centerline and at the level corresponding to the maximum assigned su
37、mmer load line. .1211Cargo volume in tank number i, Vi: The maximum volume of Vi is 98% of the volume of the tank. Calculation of outflow in case of bottom damage as per 5.3 of the IMO Guidelines. .1012Width of tank i, bi: for tanks adjacent to the side shell, biis the width of the tank, measured in
38、board at li/2, at right angle to the centre line and at the level of the maximum assigned summer load line for a centre tank, biis the width of the tank bottom measured at li/2. .13 Width of the cargo tank area, Bt: Btis the maximum breadth as defined by Annex 1, Regulation .1(21) measured within Lt
39、. .14Height of double bottom, hi: hiis the minimum height of the double bottom measured from the base line. Refer to figures 2 and 3. MPC7 (contd) IACS Int. 1998, Corr. 1 Feb 1999 L 7-3 MPC7 .15 Height of the cargo column above the cargo tank bottom, hc: hcis the height of the cargo column measured
40、from the cargo tank bottom at the point where hi is measured. Refer to figure 2. FIGURE 2 Where a double bottom does not exist, then hcis to be taken at its maximum value considering any deadrise of the ship. Refer to figure 3. FIGURE 3 hc hi=0 OIL hc hi=0 OIL hchihchi OILOIL MPC7 (contd) IACS Int.
41、1998, Corr. 1 Feb 1999 L 7-4 MPC7 Calculation of total hypothetical outflow as per 5 of the IMO Guidelines. .16 When investigating outflow due to side damage, the side offering the more unfavourable EOS number should only be used. Requirements for application of hydrostatic balance loading in cargo
42、tanks as per the Appendix to the IMO Guidelines. .17 The number of tanks to be HBL is determined by the conditions underlined by EOS 3 not being greater than EOS 2 for the ship arranged with non-cargo side tanks and furthermore not being greater than 85% of the EOS 1. Once it has been established th
43、at these conditions have been met, with zero trim, adjusted Vi, nominal density and maximum cargo level as per the Appendix formula, the configuration is considered having been validated and there is no need to recalculate EOS3 for the actual loading conditions corresponding to that configuration. F
44、illing levels in HBL tanks for the actual loading conditions are determined by the HBL formula of the Appendix to the Guidelines using actual density and draft at each HBL tank location. .18 Partial filling less than HBL height may alternatively be considered. In such conditions, the cargo height in
45、 the selected cargo tanks is to be determined based on EOS 3 compliance with the criteria, with zero trim, nominal density, and draft corresponding to adjusted Vi. Where cargo levels less than maximum cargo level calculated by the HBL formula of the Appendix to the Guidelines are used for EOS3 calcu
46、lation, the actual filling levels will be calculated as follows : (hcx K) x rcx g + 100DP (d - hi) x rsx g where K is a correction factor h(HBL)/ h(PF) with : h(PF) : maximum cargo height in partial filling condition, leading to a satisfactory EOS3 for the selected configuration (with nominal densit
47、y, assumed zero trim, corresponding draft d(PF), adjusted Vi). H(HBL): maximum HBL cargo height for the selected configuration at draft d(PF). Thus : K = ( d(PF)- hi) x rsx g - 100 DP ) / (rnx g x h(PF) MPC7 (contd) IACS Int. 1998, Corr. 1 Feb 1999 L 7-5 MPC7 ANNEX MATRIX OF PARAMETERS Where : V1: 9
48、8% of cargo and fuel oil tanks volumes within Ltin the original configuration. V2: V1minus 98% volume of side protection tanks corresponding to 13 G(4), in way of cargo tanks. V3: Oil volume of full cargo and fuel oil tanks within Lt(at 98 %) and of HBL and/or partially loaded tanks. Note 1: Note 2:
49、Ballast may be used to achieve an increased draft only in determining EOS3. EOS Otot V = 1 EOS (see Assumed DraftDensityLoaded oilConsumables nota 1)trimvolumeand ballast EOS 10MaximumNominalV1none assigned summer water line EOS 20CorrespondingNominalV2none draft EOS 30CorrespondingNominalV3See note 2 draft MPC7 (contd) IACS Int. 1998, Corr. 1 Feb 1999 7-6 L L MPC 8 Interpretation of “installed on board” (MARPOL 73/78, Annex VI/16(2)(a) Deleted in Oct 2005 MARPOL 73/78 Annex VI/16(2)(a) reads as follows: (2)(a) Except as provided in sub-paragraph (b) of this paragra