DWT CHEMICAL/OIL TANKER

Transcription

1 SHIP NAME : M/T RUBY-T DWT CHEMICAL/OIL TANKER OWNER :GALATA DENIZCILIK TIC A.S. BUILDER : GĐSAN SHIPYARD CLASS : G.L. CLASS ID: HULL NO : NB46 TITLE : MARPOL 73/78 ANNEX II PROCEDURE & ARRANGEMENT MANUAL DATE IMO NO PREP. BY ENDER KESKĐN

2 MARPOL 73/78 ANNEX II PROCEDURE AND ARRANGEMENTS MANUAL NAME OF SHIP M/T RUBY-T DISTINCTIVE NUMBER OF LETTERS IMO NUMBER PORT OF REGISTRY PANAMA YEAR OF BUILT 2010 GROSS TONNAGE DEADWEIGHT TONNAGE LENGHT PERPENDICULAR (B.P.) 146,90 LENGHT OVERALL (O.A.) 156,70 SHIP TYPE (IBC) IMO II CHEMICAL / OIL TANKER CLASSIFICATION GERMANISCHER LLOYDS NOTATION GL I + HULL + MACHINERY + CHEMICAL TANKER/OIL TANKER, ESP,UNRESTRICTED NAVIGATION + AUT-UMS + AVM-APS + ENVIROMENTAL PASSPORT, MONSHAFT, E3,VECS, INWATERSURVEY, IGS,USGC, COMFORT,MONSHAFT, ILO,CARGO CONTROL

3 Introduction 1. The international Convention for the Preventing of Pollution from Ships,1973, as modified by the Protocol of 1978 relating there to (hereinafter referred to as MARPOL 73/78 ) was established in order to prevent the pollution of the marine environment by discharges into the sea from ships of harmful substances or effluents containing such such substances.in order to achive its aim, MARPOL 73/78 contains six Annexes in which detailed regulations are given with respect to the handling on board ships and the discharge into the sea or release into to atmosphere of six main groups of harmful substances, i.e. Annex I (Mineral oil),annex II (Noxious liquid Substances carried in bulk),annex III (Harmful substances carried in packaged forms), Annex IV (Sewage), Annex V (Garbage) and Annex VI (Air pollution). 1. Regulation 13 of Annex II of MARPOL 73/78 (hereinafter referred to as Annex II) prohibits the discharge into to sea of Noxious Liquid Substances (NLS) of categories X,Y,Z or of ballast tanks washings or other residues or mixtures containing such substances, except in compliance with specified conditions including procedures and arrangements based upon standards developed by the International Maritime Organization (IMO) to ensure thet the criteria specified for each Category will be met 2. Annex II requires that each ship which is certified for the carriage of noxious liquid substances in bulk shall be provided with a Procedures and Arrangements Manual, hereinafter referred to the as Manual. 3. This Manual has been written in accordance with regulation with regulation 14 of Annex II and is concerned with the marine environmental aspects of the cleaning of cargo tanks and the discharge of residues and mixtures from these operations.the manual is not safety guide and reference shall be made to other publications specifically to evaluate safety hazards. 4. The purpose of this Manual is to identify the arrangements and equipment required to enable compliance with Annex II and to identify for the ships2s officers all operation procedures with respect to cargo handling,tank cleaning,slop handling,residue discharging,ballasting and deballasting,which must be followed in order to comply with the requirements of Annex II. 5. In addition,this Manual,together with the ship s Cargo Record Book and the International Certificates of Fitness for the carriage of Dangerous Chemical in Bulk,will be used by Administration for control purposes in order to ensure full compliance with the requirements of Annex II by this ship. 6. The master shall ensure that no discharges into the sea of cargo residues or residue/water mixtures containing Category X,Y or Z substances shall take place,unless such discharges are made in full compliance with the operational procedures contained in this manual. 7. This Manual has been approved by the Administration and no alteration or revision shall be made to any part of its without the prior approval of the Administration.

4 INDEX OF SECTION 1. Main features of MARPOL 73/78 Annex II 2. Description of the ship s equipment and arrangements 3. Cargo unloading procedures and tank stripping 4. Procedures relating to the cleaning of cargo tanks, the discharge of residues, ballasting and deballasting 5. Information and Procedures Addenda Addendum A: Addendum B: Addendum C: Flow diagram Pre-wash procedures Ventilation procedures List of Documents Cargo Pump FRAMO SD-150 Specifications and performance curves Portable Cargo Pump FRAMO TK80 Specifications and performance curves Ballast Pump FRAMO SB-200 Specifications and capacity curves Slop Pump FRAMO SD-100 Specifications and performance curves Tank Cleaning Pump ALLWEILER AG NAM-F Specifications and capacity curves Tank Cleaning Machines Technical Specifications Performance data table of each cargo tank fixed cleaning machines List of Drawings - PLAN I Dwg. No. NV General Arrangement - PLAN II Dwg. No. NV Cargo System - PLAN III Dwg. No. NV Cargo Stripping and Drain System - PLAN IV Dwg. No. NV Ballast System - PLAN V Dwg. No. NV ODME & Chemical Discharge System - PLAN VI Dwg. No NV Cargo Tank Drying and Gas- Freeing Sys. - PLAN VII Dwg. No. NV Deck arrangement - PLAN VIII Dwg. No. NV Tank Washing System - PLAN IX Dwg. No. NV Cargo Heating line on deck - PLAN X Dwg. No.NV Deck heater cargo and deck slop tank - PLAN XI Dwg. No. NV Nitrogen Generating System - PLAN XII Shadow Plans using Fixed Tank Cleaning Machines

5 SECTION 1 Main Features of MARPOL 73/78 Annex II 1.1. The requirements of annex II apply to all ships carrying noxious liquid substances in bulk. Substances posing a threat of harm to the marine environment are divided into three categories, X, Y and Z. Category X substances are those posing the greatest threat to the marine environment, whilst Category Z substances are those posing the smallest threat Annex II prohibits the discharge into the sea ant effluent containing substances falling under these categories, except when the discharge is made under conditions which are specified in detail for each category. These conditions include, where applicable, such parameters as; 1. the maximum quantity of substances per tank which may be discharged into the sea 2. the speed of the ship during the discharge 3. the minimum distance from the nearest land during discharge 4. the minimum depth of water at sea during discharge; and 5. the need to effect the discharge below the waterline 1.3. For certain sea areas identified a special area more stringent discharge criteria apply. Under Annex II the special area is the Antarctic area Annex II requires that every ship is provided with pumping and piping arrangements to ensure that each tank designated for the carriage of Category X, Y and Z substances does not retain after unloading a quantity of residue in excess of the quantity given in the Annex. For each tank intended for the carriage of such substances an assessment of the residue quantity has to be made. Only when the residue quantity as assessment is less than the quantity prescribed by the Annex may a tank be approved for the carriage of a Category X, Y or Z substance In addition to the conditions referred to above, an important requirement contained in Annex II is that the discharge operations of certain cargo residues and certain tank cleaning and ventilation operations may only be carried out in accordance with approved procedures and arrangements To enable the requirement of paragraph 1.5 to be met, this Manuel contains in Section 2 all particulars of the ship s equipment and arrangements, in Section 3 operational procedures for cargo unloading and tank stripping and in Section 4 procedures for discharge of cargo residues, tank washing, slops collection, ballasting and deballasting as may be applicable to the substances the ship is certified fit to carry By following the procedures as set out in this Manuel, it will be ensured that the ship complies with all relevant requirements of Annex II to MARPOL 73/78.

6 SECTION 2 Description of the Ship s Equipment and Arrangements 2.1. This section contains all particulars of the ship s equipment and arrangements necessary to enable the crew to follow the operational procedures set out in Sections 3 and General arrangement of ship and description of cargo tanks The cargo tank area which is separated from the rest of the ship s construction by a forward ballast tank and aft ballast tank.cargo tank area is divided with one longitudinal corrugated bulkhead separating cargo tanks of port and starboard side. The vessel has fourteen (14) tanks; 7,6,5,4,3,2,1 starboard and portside tanks, two (2) deck slop tanks located on main deck. The capacities of the tanks are presented in table 2. the interior parts of the cargo tanks have been treated with a Marine Line coating system resistant to all chemicals. Side tanks and a double bottom has been constructed under the whole length of cargo tanks. This results all around double skin protection of subject tanks. All cargo tanks and slop tanks are fitted with deck heater for heating cargoes and located on main deck.each cargo tank have individual deck heater driven from Framo cargo pump and heating medium from secondary system termal oil line. Heating coil and support materials inside the tanks are stainless steel AIS 316L. The coils are placed just around pump suction well above the tank top and are connected by means of T profiles on tank bottom. See also plan IX for the heating coil and Deck arrangement for cargo and slop tanks and boiler Maker drawings for cargo heating system on main deck on Plan VIII. A safe access to bow which is a cat walk made of steel is provided with a height of 3 m, constructed between poop deck and forecastle platforms between fr.44 and fr.169. Handrails, ladders and walkways are provided for easy access and crew security at appropriate points. Additionally two pieces crew shelters are constructed on the catwalk between frames 44 and 169. The deck arrangement drawing indicating the cargo tank positions, numbering of the cargo tanks, equipment of cargo tanks are given in section list of drawings of this manual. Related drawings: PLAN I General Arrangement Plan PLAN VII Deck Arrangement 2.3. Description of cargo pumping and piping arrangement and stripping system Cargo manifold system is designed so that seven (7) different substances can be loaded/ seven (7) different substances unloaded at the same time. Also a unique substance can be loaded/ unloaded to/from all tanks by means of the two common line located aft and fore of cargo manifold. Cargo system is separated into two main segregations by two common collectors which are connected to the both aft and fore main common manifolds. The starboard side collector collects from cargo tanks no. 6,4,2 and deck slop tank stb. &ps.. the portside collector collects from cargo tanks 7,5,3,1 ps/sb. All of these connections which are both from tanks to collectors to main manifolds are done via one butterfly valve and one spectable flange for maintaining the full segregation of cargoes. According to mentioned seven to seven segregation logic, two different types of cargo can be loaded and unloaded safely through this piping arrangement.

7 Cargo transfer systems have butterfly valves capable of being remotely operated on each tank filling and discharge line and two (2) manually operated butterfly valves on manifold line port and starboard side. Cargo system can be controlled and monitored from cargo control room by means of the cargo monitoring-alarm systems and valve remote control systems. Cargo drop lines are extend to within 100 mm of the cargo/slop tanks bottom. To prevent thermal stresses expansion loops are installed on the cargo lines where it is necessary. Cargo pipes are joined with full penetration butt welding except valves, spool pieces and similar connections. Valve and spool pieces connections are of neck flanged type.(din2633 PN16) Cargo piping arrangements Cargo piping materials as bellow; DN 25X2.77 mm min.stainless steel welded 316 L for stripping pipes DN 50x2.77 mm min.stainless steel welded 316 L for stripping pipes DN 100x3.05 mm min.stainless steel welded 316 L for slop pipes DN 150x3.4 mm min stainless steel welded 316 L for cargo discharge,filling, manifold pipes, DN 350x4.57 mm min.stainless steel welded 316 L for common pipes. Additionally, stainless steel 316 L welded tees, eccentric/concentric reducers, elbows, blind flanges, neck flanges, clamps and fasteners are used on the pipe system. Cargo pumping arrangements Each cargo tanks and deck slop tanks have separate hydraulic driven deepwell pumps. All other cargo control and monitoring equipments and control panels are arranged in the cargo control room from where direct clear view is maintained through the cargo manifold. Cargo pumps specifications are as follows: Cargo pumps specifications FRAMO Hydraulic driven Deepwell Pump, type SD-150, hydraulic driven Capacity / head : 380 m³ / h,110 m.i.c. Viscosity / specific gravity : 1.0 cst s.g.0.8 Motor : Hydraulic high pressure motor Pump length : Apprx 13 meter Hydraulic data : 322 l/min and 243 bar The pump pipe stack consists of two separate pipes, the cargo pipe and a concentric hydraulic oil pipe whereby the hydraulic pressure pipe is placed inside return pipe to obtain maximum safety.furtheer, the hydraulic system in the pump is separated from the cargo by a cofferdam, which is ventilated, via an exhaust trap to the atmosphere. From the top plate there is an arrangement for purging the cargo line, thus only a minimum of cargo will be left in the tank after pumping is completed.the pump can be used as a drop line, but the pressure drop through the pump unit must be taken into consideration.

8 3 of Electric hydraulic power packs ( A4V355 pump ) 3 x 535 l/min = 1605 l/min and 267 bar Simultaneous operation ( design ) ; 4 of Cargo pump SD150 ( 1520 m3/h mlc - 0,8 kg/dm3-1,0 cst ) = l/min and 267 bar 2 of Cargo pump SD100 ( 240 m3/h mlc - 0,8 kg/dm3 1,0 cst ) = 238 l/min and 267 bar Total ( 1760 m3/h mlc 0,8 kg/dm3 1,0 cst) = l/min and 267 bar Connections Discharge connection Stripping connections : DN 150-PN16 : DN 25-PN40 Portable Cargo Pump and Equipment Type Capacity / Head Viscosity specific gravity Hydraulic motor type Hydraulic system pressure Hydraulic system oil consumption : Framo TK80 : 70 m³/h-70 m.i.c : 1.0 cst at 20 c-s.g.0.8 : Ax Plunger : 280 bar : 85 1/min The Cargo piping arrangement including pump capacities, diameters, stripping system diameters are given in Plan II Portable cargo pump can be use submerged through each cargo tank portable hatches with the chemical resistant hose of DN 100 sized and 25 m in length which is ready under forecastle. Hydraulic extension hoses are 18 m in length.(two (2) pieces) Related drawings: Cargo Pump Maarflex Deepwell Pump, type SD150 Specifications and Performance curves. Portable Cargo Pump Marflex TK80 Specifications and Performance Curves Cargo suction wells Cubic capacities of suction wells of the cargo tanks 7,6,5,4,3,2,1 PS&STB are app.63,0 liter for each and slop tanks suction wells are 47 liter for each.

9 Location Suction points Cargo tanks 1PS&1STB Frame mm Cargo tanks 2 PS&2STB Frame mm Cargo tanks 3 PS&3STB Frame mm Cargo tanks 4 PS&4STB Frame mm Cargo tanks 5 PS&5STB Frame mm Cargo tanks 6 PS&6STB Frame mm Cargo tanks 7 PS&7STB Frame mm Inert Gas Generator System : Inert Gas Generator system has been fitted in the vessel. The generator is to be combustion type and installed in Inert Gas Generator room on poop deck. The capacity of the inert gas generator (2500 m3/h) is to be sufficient make inerting while cargo simultaneous discharging of 4 cargo tanks is being done.the inert gas system working with bar is used for inerting purposes.the pressure in this system is controlled automatically by inert gas system.the tank connections to be with spool pieces.the system to be controllable from CCR either own panel or vessel s automation system. Local control panel also provided in Inert Gas Generator Room. Inert gas generator is equipped with two combustion air blowers according the classification requirements.both blowers have block valves ( 2205 and 2225) at the outlet.the block valves are equipped with limit switches for safe operation and protection of the blowers.the operator will not be able to start generator without having these valves in the correct position. The capacity of the inert gas generator can be adjusted by the handwheel on the main burner.with this the burner gun (lance) can be moved forward and backward in its casing.the passages of the slots in the atomising ring around the burner head will consequently get smaller or bigger.an inert gas system comprises several control panels which has been located Local control room, Cargo control room, Bridge panel, Engine room control panel. Related drawings: PLAN II- Cargo System PLAN XI- Inert Gas Generating System

10 Nitrogen Generator System Nitrogen is to be used for both padding, inerting and stripping purposes while carrying chemicals. Stripping pressure : 7 bar Padding pressure : 0.2 bar Inerting pressure : 0.2 bar A Nitrogen Generator with a capacity of 500 Nm³/h is installed in the Nitrogen Generating Room located on the portside of main deck level and in the air condition room ltr Nitrogen receiver tank is located on cargo area aft for stripping purposes. Gas for inerting and padding directly supplied Nitrogen Generator.Nitrogen generator line has been fitted to vapour return line for inerting cargo tanks. Stripping connections to cargo pumps/pipes by means of flexible hoses, snap-on couplings. Related drawings: PLAN II- Cargo System PLAN XI- Nitrogen Generating System 2.4. Description of ballast tanks and ballast pumping and piping arrangements The segregated ballast system is such that the ships complies with IMO stability and trim criteria without ballasting any cargo tank. The ship is equipped with a segregated ballast system comprising a double hull and bottom tank underneath the cargo tanks. Ballast piping arrangement The segregated ballast system is such that the ship complies with IMO stability and trim criteria without ballasting any cargo tank. The ship is equipped with a segregated ballast system comprising a double hull and bottom tank underneath the cargo tanks. Ballast pumps are served with two(2) hydraulic driven deepwell ballast pumps located on main deck aft side. Ballast overboard discharges are located above min ballast water line level on both side of the vessel. Visual inspection of discharging water can be observer with the subject overboard outlets located above the deepest ballast waterline. All ballast system valves are hydraulic remote operated and controllable from cargo control room. Additionally, a high-pressure type water eductor is installed in ballast tanks for stripping the water remains in ballast tanks and located in the ballast pump room bilge. The subject ejector is driven by ballast Pumps has a suction capacity of 70 m³/h and working from fire pump line. Ballast shore connection flanges are provided for both side of the vessel and located in aft cargo area. Ballast Pump Technical Data Type Capacity Delivery head Viscosity / specific gravity : FRAMO SB-200 : 500 m³/h : 20 mlc : 1.0 mm2/s at 20 C kg/dm³

11 Power.required : Hydraulic high pressure motor The submerged centrifugal ballast pump is delivered assembled with the hydraulic motor, a pipe stack and an automatic self priming device. A remote operated control valve is mounted on the top of the submerged pump, enabling the operator to regulate the capacity of the pump steples from zero to max.further, tha capacity can also be controlled locally at pump side. BALLAST TANK CAPACITIES TANKS VOLUME (M³) WB TK IP 428,56 WB TK IS 450,41 WB TK 2P 522,34 WB TK 2S 543,41 WB TK 3P 520,77 WB TK 3S 541,45 WB TK 4P 604,95 WB TK 4S 628,87 WB TK 5P 605,05 WB TK 5S 628,87 WB TK 6P 520,28 WB TK 6S 540,86 WB TK 7P 669,44 WB TK 7S 702,07 FP TK C 563,30 Related drawings: PLAN IV-Ballast System Ballast pump FRAMO SB-200 Specifications and capacity curves 2.5.Description of dedicated slop tanks with associated pumping and piping arrangements Deck slop tanks are constructed between the Frames as independent deck tanks PS&STB. The characteristics of structures and materials are the same with the cargo tanks. These tanks are also used as a cargo tank. The capacity of the slop tank starboard 250,66 cbm and portside is 250,66 cbm. The rate of slop tanks capacity to total cargo capacity is 2,2 % according to Marpol 73/78 Annex I Reg 15. Slop piping arrangements Deck slop tanks have separate hydraulic driven deepwell pumps and separate discharge and manifold lines. ODME system return pipes are connected to the slop tank drop lines with a butterfly valve. Slop tank pump discharge and drop line valves are hydraulically operated valves and they are controlled from cargo control room. Slop tank manifolds are provided with gear operated butterfly presentation valves.

12 Slop tank drop lines extend to within 100 mm of the cargo / slop tanks bottom. Slop piping materials are as follows; DN 25 X1.7 mm min. stainless steel welded 316 L for stripping pipes. DN100 X 3,05 mm min. stainless steel welded 316 L for slop discharge and filling pipes. DN 350 X 3,96 mm min. stainless steel welded 316 L for manifold pipe If it is necessary to store washing water with more capacity than the slop tank can store, then another cargo tank should be used as slop tank. Slop Pump specifications Marflex Deepwell Pump Capacity /head Viscosity / specific gravity Power consumption : Type SD-100 : 120 m³/h 110 m.1.c : 1.0 cst at 20 C s.g.0.8 : Hydraulic high pressure motor A remote operated control valve is mounted on the top of the submerged pump, enabling the operator to regulate the capacity of the pump stepless from zero to max. Further, the capacity can also be controlled locally at pump side. Connections: Discharge connection Stripping connections : DN125-PN16 : DN25-PN16 Related drawings: Slop pump Framo Deepwell Pump,SD-100 Specifications and Performance Curves 2.6. Description of underwater discharge outlet for effluents containing Noxious Liquid Substances Chemical discharge pipe outlet is arranged between frame no 88-89, 2800 mm from base line port side it is connected to the cargo common manifolds with a butterfly valve and a spectacle flange Chemical discharge rate is 98 m³/h and the discharge pipe diameter is DN 250 t=12,7 mm. Chemical discharge rate calculation is presented in the subject drawing Odme & Chemical Discharge overboard system. Pipe material is DIN 2448 St.37.0 N inside ballast tank. The inside is coated with cargo tank epoxy and the outer surface is coated with ballast tank epoxy. Pipes outside ballast tank are stainless steel 316 L DIN The distance between underwater discharge outlet and engine room sea chest is app 40.4 m Related Drawings: PLAN V ODME & Chemical Discharge System

13 2.7. Description of Flow Rate Indicating and Recording Devices N/A 2.8. Description of cargo tank ventilation system The noxious liquid substances the ship is certified to carry, having vapour pressure over 5x10 3 Pa at 20 C suitable for cleaning by ventilation are listed in paragraph of the Manual. A Fixed Tank Drying Fan and a deck main line are fitted on the full length of the main deck.tank drying for is capable of ventilating two (2) cargo tanks at the same time. Tank drying fan is located above the maindeck located between frames at portside.tank drying fan is non-sparking type and its electric motor is suitable ex-proof type. Tank drying main pipeline is 1 pcs DN 400 sized. Tank Drying main pipeline is connected to the cargo tanks manifold area from cargo line by means of flexible hoses with nominal diameter of DN 150.Tank drying fan is m³/h 2200 Pa and heater (310 kw) is fitted beyond the gas freeing fan. Gas freeing is to be done with water driven portable Gas Freeing Fan stored on board. The capacity of the subject fan is 5000 m³/h.gas freeing ducts is to be used as gas flow outlets from cargo tanks. Both the gas freeing fans and the ducts are to be fixed on portable tank hatches during the operation. The details of these ducts are presented in the subject drawing.dwg.no.nv Cargo tank Drying System as Plan V in the Appendix Drop lines are located near the centre line and fore part of each cargo tanks. Each cargo tank ladder is located fore part of the tank except No.1 and No.5 cargo tanks. Each cargo pump suction unit is located near the centreline and aft part of the cargo tanks. The ventilation flexible hoses should be connected to the portable pump branches by using reducers which are located on each cargo line. All valves, spool places and spectacle flanges are to be opened during ventilation. Ventilation should continue until no visible remains of liquid are observed. This shall be verified by a visual examination or portable level gauging units. The minimum jet flow rate of each cargo tanks is 50 m³/min app. Related drawings: PLAN VI- Cargo Tank Drying &Gas-Freeing System 2.9. Description of tank washing arrangements and wash water heating system The vessel is fitted with an efficient tank cleaning system for washing the cargo tanks after unloading operations. Tank system equipments are as follows : Tank cleaning pump: ALLWEILER AG NAM-F M³/h,vertical, centrifugal, Tank cleaning heater: 5000 kw,60 m³/h sea water from 10 C to 80 C Two (2) of cargo tanks can be washed with 80 C sea water simultaneously.(four (4) machines) Eight (8) of tank washing machines can be operated simultaneously at normal sea water temperature (without heating)

14 Fixed tank cleaning machines: 30 pieces of ALFA LAVAL,18 m³/h at 10 bar, with dual nozzle size 8 mm and jet depth 15 m is fixed on cargo tanks. Each slop tank has one (1) cleaning machine. Each cargo tank has two (2) fixed cleaning machines. Portable tank cleaning machines: ALFA LAVAL TOFTEJORG TZ-82 8 m³/h at 10 bar. The Gunclean Toftejorg TZ-82 is a media driven and media lubricated tank cleaning machine. As it is self-lubricating, there is no lubricating substance such as oil, grease etc. in the machine which needs to be regularly changed. The flow of the cleaning fluid into the machine passes through a guide and a turbine, which is set into rotation. The turbine rotation is through a gearbox transformed into a combined horizontal rotation of the machine body and a vertical rotation of the nozzles. Back cargo tank is provided with portable hatches for the portable machine which will be connected to the water supply system with quick couplings. Each cargo tank two fixed tank cleaning machines. The position of fixed tank cleaning machines is determined according to shadow plan. Each cargo / slop tank has portable tank cleaning hatches. Sea water is taken from engine room sea water suction line and directed to the main deck line. The flushing water for cargo tanks are stored in Technical FW tanks constructed on the double skin volume in the engine room. Tank cleaning pump is also serving these two tanks. Technical Fresh Water Tanks capacities are m³ for each. For ensuring complete coverage of the cargo tanks walls, please see tank cleaning technical manual. Crude oil washing is to be use the cargo for the cleaning fluid trough the tank cleaning guns / machines when washing the tanks of a tanker carrying crude oil. There is a minimum demand for how a COW system shall be built and this can be read in the Revised specification for the design, operation and control of crude oil washing systems the IMO resolution A.446(XI).IMO publication No IMO-617E. The latest edition as of March 2002 is the 4th edition of 2000.The drawings made according to subject rule, for the evaluation of a specific tank cleaning system are the Shadow diagrams.these diagrams are a simplification of the true tank and are showing the approximate size and location of areas shielded by internal constructions from the cleaning jet or shaded due to insufficient throw length. Related drawings: Performance data table of each cargo tank fixed cleaning machines. Performance data table of portable cleaning machines. Tank cleaning pump ALLWEILER AG NAM-F Specifications and capacity curves PLAN VIII- Tank washing system PLAN XII- Shadow diagrams using fixed tank cleaning machines

15 SECTION 3 Cargo Unloading Procedures and Tank Stripping 3.1. This section contains operational procedures in respect of cargo unloading and tank stripping which must be followed in order to ensure compliance with the requirements of Annex II Cargo unloading ; Unloading plan is to be established prior to arrival of discharging ports and it should be informed to all crews engaged in cargo unloading. After arrival to a wharf, a meeting on the loading plan should be held thoroughly by all members including shore reception officers. After receiving the notice that the cargo pump is started with low speed. Cargo pump discharging pressure is raised up to the reverse flow from the shore line will not occur, and then the valve on the manifold is opened slowly. After confirming no leakage on the shore line, the discharging pressure is fixed in the designed pressure raising the cargo pump revolution. It is note that the valve on the manifold is opened at the last after the cargo pump discharging pressure is raised sufficiently to prevent a reverse flow the shore line. When making the unloading plan, unloading sequence of the tank should be determined considering the ship s trim and heel for obtaining easy flow of the cargo to each suction well. Unloading is commenced from bow tanks to the stern as possible for keeping appropriate trims. At the termination of the unloading of each tank, turn down the suction valve for reducing the flow and discharge slowly the cargo flows in to the suction well. When the discharging from all the tanks is over, raise the pressure in the discharge lines by sucking air from an appropriate tank in continuing the pump operation and keeping the manifold valve in the closed position, then push the cargo by air pressure repeatedly in several times by opening and closing the valves for preventing the cargo in discharge line reverses into the cargo pumps, suction lines and cargo tanks. Stripping is done by using compressed air or nitrogen when substances can not face to contact with the air. The ship s trim and list shall be such as to provide favourable drainage to the suction points.during the water test the ship s trim condition shall not exceed 3 by the stern and ship s list shall not exceed 1 C Cargo tank stripping After Cargo Unloading After the unloading from shore is terminated, the presentation valve on the manifold should be closed The crew should wait until the cargo is drained through the top line Drop line valve should be shut Deepwell pump is started at a low rpm rate in order to prevent the back flow of the sucked cargo from the suction well Deepwell pump discharge valve is closed

16 Air/ nitrogen is connected to the pump stripping valve coupling. Pump is purged through stripping line to the stripping pipe. Pair cargo tank stripping piper connect each other and extend to the manifold ends and cargo drain line. Operator able to send the stripped quantity either to the shore or residue tank manifold(then residue tank) via cargo drain line Pump is to be stopped. Estimated time is: 3 minutes Superstripping There is a separate pipe extend suction well to the main deck for superstripping. The residues remained in the suction well should be sucked by nitrogen/ air ejectors connected to the superstripping line. Nitrogen/air should be connected to the ejector drive The ejector outlet connects to the main stripping line by means of hose and snap on couplings. The superstripped quantity can send to the shore or residue tank manifold (then residue tank)via cargo drain line. Estimated superstripping time is 2 minutes Total stripping time is 5 minute app for each cargo tank. Related drawings: PLAN III- Cargo Stripping and Drain System 3.4. Cargo temperature The cargo tanks and slop tanks are installed with deck heater for cargo heating temperature. Cargo heating system is separated from engine room heating system by means of primary and secondary system. Both systems heating medium is thermal oil.the thermal oil in the secondary system, compliance with international food grade are certified. Cargo heater is located in heat exchanger room with temperature control valve to keep the heating medium temperature at predetermined temperature The area of heating coils ensure to keep the viscous cargoes (worst case HFO) temperature at 66 C while air temperature -10 C sea water temperature 0 C and heating up rate 4 C/day. Each cargo/slop tank is fitted with temperature measurement device including three probes located at upper, mid height and bottom level of cargo tanks. Cargo temperature can be observed any time from temperature measurement device display located in cargo control room. After the heating medium temperature is set, the cargo temperature should be monitored periodically. When necessary the operator can open or close the heating coil inlet and outlet valves of the cargo tank to control the cargo temperature at desired level. Related drawings: PLAN IX Cargo Heating Line on Deck PLAN X Heating Coils in cargo and slop tanks 3.5. Procedures to be followed when a cargo tank cannot be unloaded in accordance with the required procedures. Failure of cargo tank stripping system The ship is listed to stern trim by unloading the forward tanks first and residues should remain only in the wells. In case of failure of the deepwell cargo pumps fitted to the cargo and slop tanks, portable hydraulic driven cargo pump should be used. This pump is to be installed according to the manufacturer s instructions.

17 When the portable pump is operated, the local MARPOL Surveyor (refer to reg. (16).1) of Annex, MARPOL 73/78, as amended) is to be consulted for shore assistance and tank washing procedures. Failure of the cargo tanks heating system When the heating procedure is failed during unloading operations, heating media can be supplied from shore facilities. In that case the connection from secondary heating system is to be cancelled and the heating coils of effected tank are fed from emergency shore connection Cargo Record Book The cargo Record book shall be completed in the appropriate places on completion of any cargo operation.

18 SECTION 4: Procedures Relating to the Cleaning of Cargo Tanks, the Discharge of Residues, Ballasting and Deballasting 4.1. This section contains operational procedures in respect of tank cleaning, ballast and slops handling which must be followed in order to ensure compliance with the requirements of Annex II The following paragraphs outline the sequence of actions to be taken and contain the information essential to ensure that noxious liquid substances are discharged without posing a threat of harm to the marine environment N/A 4.4 The information necessary to establish the procedures for discharging the residue of the cargo, cleaning, ballasting and deballasting the tank, shall take into account the following :.1 Category of substance The category of the substance should be obtained from the relevant Certificate..2 Stripping efficiency of tank pumping system The stripping quantity in tank and its piping systems should not be exceed 75 ltr..3 Vessel within or outside a special area No discharges into the sea of residues of Noxious Liquid Substances, or mixtures containing such substances, are allowed within the Antarctic area ( the sea area South of latitude 60 S ) Discharge of residues of Category X outside special areas 1. A tank, from which a substance in Category X has been unloaded, shall be prewashed before the ship leaves the port of unloading. The resulting residues shall be discharged to a reception facility until the concentration of the substance in the effluent to such facility, as indicated by analyses of samples of the effluent taken by the surveyor, is at or below 0.1 % by weight. When the required concentration level has been achieved, remaining tank washings shall continue to be discharged to the reception facility until the tank is empty. Appropriate entries of these operations shall be made in the Cargo Record Book and endorsed by the surveyor referred to in Marpol. 2. Any water subsequently introduced into the tank may be discharged into the sea when all the following conditions are satisfied: - the ship is proceeding en route at a speed of at least 7 knots - the discharged is made below the waterline through the underwater discharge not exceeding the maximum rate for which the underwater discharge outlet is designed - the discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres. 3. Where the Government of the receiving party is satisfied that it is impracticable to measure the concentration of the substance in the effluent without causing undue delay to the ship, that Party may accept an alternative procedure as being equivalent to obtain the required concentration in regulation provided that.

19 1 The tank is prewashed in accordance with a procedure approved by the Administration in compliance with Addendum B prewash procedures. 2 Appropriate entries shall be made in the Cargo Record Book and endorsed by the surveyor referred to in regulation 16.1 Marpol 73/78 Annex II Discharge of residues of Category X within special areas Prohibited Discharge of Category Y substances from the slop tank Any residues retained on board in a slop tank, including those from cargo pump-room bilges, which contain Category X substances shall be discharged to a reception facility Discharge of residue of Category Y outside special areas 1. With respect to the residue discharge procedures for substances in Category Y the following discharge standarts shall apply: - The ship is proceeding en route at a speed of at least 7 knots - The discharge is made below the waterline through the underwater discharge not exceeding the maximum rate for which the underwater discharge outlet is designed - The discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres. 2. If the unloading of a Category Z is not carried out in accordance with the Manual, a prewash shall be carried out before the ship leaves the port of unloading, unless alternative measures are taken to the satisfaction of the surveyor referred to in regulation 16.1 of Marpol 73/78 Annex II to remove the cargo residues from the ship to quantities specified in Annex II. The resulting tank washings of the prewash shall be discharged to a reception facility at the port of unloading or another port with a suitable reception facility provided that it has been confirmed in writing that a reception facility at the port is avaible and is adequate for such a purpose. 3. For High Viscosity or Solidifying Substances in Category Y the following shall apply: - A prewash procedure as specified in addendum B of the Manual shall be applied. - The residue/water mixture generated during the prewash shall be discharged to a reception facility until the tank is empty; and - Any water subsequently introduced into the tank may be discharged into the sea in accordance with the following discharge standards: o The ship is proceeding en route at a speed of at least 7 knots o The discharge is made below the waterline through the underwater discharge not exceeding the maximum rate for which the underwater discharge outlet is designed o The discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres Discharge of residue of Category Y within special areas Prohibited Discharge of Category Y substances from the slop tank 1. Residue / water mixtures in a slop tank should not be discharged into the sea within special areas 2. Residue / water mixtures in a slop which contains only low- viscosity, non-solidifying substances may be discharged into the sea outside special areas at a rate not exceeding

20 the maximum rate for which the underwater discharge outlet is designed. The discharge must also be in accordance with the following conditions: - The ship is proceeding en route at a speed of at least 7 knots - The discharge is made below the waterline through the underwater discharge not exceeding the maximum rate for which the underwater discharge outlet is designed - The discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres. 3. Residue / water mixtures in a slop which contains high-viscosity or solidifying substances, retained on board in accordance Marpol, should be discharged to a reception facility Discharge of residue of Category Z outside special areas 1. With respect to the residue discharge procedures for substances in Category Z the following discharge standards shall apply: - The ship is proceeding en route at a speed of at least 7 knots - The discharge is made below the waterline through the underwater discharge not exceeding the maximum rate for which the underwater discharge outlet is designed - The discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres. 2. If the unloading of a Category Z is not carried out in accordance with the Manual, a prewash shall be carried out before the ship leaves the port of unloading, unless alternative measures are taken to the satisfaction of the surveyor referred to in regulation 16.1 of Marpol 73/78 Annex II to remove the cargo residues from the ship to quantities specified in Annex II. The resulting tank washings of the prewash shall be discharged to a reception facility at the port of unloading or another port with a suitable reception facility provided that it has been confirmed in writing that a reception facility at the port is avaible and is adequate for such a purpose Discharge of residue of Category Z within special areas Prohibited Discharge of residue of Category Z substances from the slop tank 1. Residue / water mixtures in a slop which contains only low- viscosity, nonsolidifying substances may be discharged into the sea outside special areas at a rate not exceeding the maximum rate for which the underwater discharge outlet is designed. The discharge must also be in accordance with the following conditions: - The ship is proceeding en route at a speed of at least 7 knots - The discharge is made below the waterline through the underwater discharge not exceeding the maximum rate for which the underwater discharge outlet is designed - The discharge is made at a distance of not less than 12 nautical miles from the nearest land in a depth of water of not less than 25 metres. 2. Residue / water mixtures in a slop which contains high-viscosity or solidifying substances, retained on board in accordance with Marpol, should be discharged to a reception facility. 4. Solidifying or high- viscosity substance The properties of the substance should be obtained from the shipping document. 5. Miscibility with watern/a

21 6. Compatibility with slops containing guides. Please refer to documents 46 CFR 150 of USCG. Should the residues not be compatible they must not be contained in the same slop tank. 7. Discharge to reception facility The properties of the substance should be contained from the shipping document. For Category X substances refer to and For Category Z substances refer to and For Category Y substances refer to and Discharging into the sea The properties of the substance should be contained from the shipping document. For Category X substances refer to For Category Z substances refer to For Category Y substances refer to Any discharge inside the Antarchic area of any noxious liquid substances or mixtures containing such residues is prohibited. 9. Use of cleaning agents or additives When a cleaning agent (i.e. a solvent) which is a harmful substance as defined by either Annex I or Annex II of Marpol 73/78 is used instead of water to wash a tank having contained a noxious liquid substance, the discharge of that cleaning agent shall be governed by the restrictions of Annex I or II that would apply as if that cleaning agent had been carried as cargo. When small amounts of cleaning additives (i.e. detergents) are added to water to facilitate tank washing, no restrictions addition to those applicable to the tanks due to the previous cargo, shall apply. Washing medium (cleaning agents) other than is not to be used to wash a cargo tank. 10. Use of ventilation procedures for tank cleaning When the ventilation procedures are used to remove residue from cargo tanks, the requirements set out below apply Ventilation procedures set out in Addendum C and Section 2.8 should be followed when a tank is to be ventilated. During the ventilation of a tank the associated piping of the tank should be cleared of liquid and the tank should be ventilated until no visible remains of liquid can be observed inside the tank. When direct observation is impossible or impracticable, means for detection of liquid remains should be provided. When the cargo tank has been ventilated dry in accordance with the procedures referred to in Section 2.8 and Addendum C this manual, any water subsequently introduced in the cargo tank for preparing the tank to receive the next cargo (ballasting of cargo tanks are not applicable to the subject vessel) Should be regarded as clean and should not be subject to the discharge requirements of Annex II of Marpol 73/78 as amended. 4.5 Having assessed the previous information, the correct operational procedures to be followed should be identified using the instructions and flow diagram in the following addendums. Appropriate entries shall be made in the Cargo Record Book indicating the procedure adopted.

22 SECTION 5 Information and Procedures Information relating to melting point and viscosity, for those substances which have a melting point equal to or greater than 0 C or a viscosity equal or greater than 50 mpa.s at 20 C, shall be obtained from the shipping document. For substances allowed to be carried, reference is made to the relevant Certificate. Table 1: Table 2: Addendum A: Addendum B: Addendum C: N/A Cargo tank information Flow Diagrams Prewash procedures Ventilation procedures. Outlines of the above table and addenda are shown below.the tables will filled and approved classification society surveyor after stripping test carried out on board.the tables is which is given below will be fill manually by the surveyor. Table 2- Cargo tank information Tank No. * Capacity (m³) Stripping quantity (litres) CT 1P 963,84 CT 1S 960,66 CT 2P 1505,80 CT 2S 1507,98 CT 3P 1684,59 CT 3S 1686,87 CT 4P 1973,28 CT 4S 1975,37 CT 5P 1973,28 CT 5S 1975,37 CT 6P 1703,60 CT 6S 1705,99 CT 7P 1544,82 CT 7S 1550,29 SLOP TK P 250,66 SLOP TK S 250,66 Stripping Date : Time : Hours Totally

23 ADDENDUM A Flow Diagrams Cleaning of Cargo Tanks and Disposal of Tank Washing / Ballast Containing Residues of Category X, Y and Z Substances Note 1: This flow diagram shows the basic requirements applicable to all age groups of ships and is for guidance only. Note 2: All discharges into the sea are regulated by Annex II Note 3: Within the Antarctic area, any discharge into the sea of Noxious Liquid Substances or mixtures containing such substances is prohibited. Discharge tank and piping Discharge to maximum tank and extent piping possible to maximum Residue is Cat. X YES Apply CDP 1(a) or 3 NO NO Residue is Cat. Y YES Solidifying or Highly Viscous NO YES Apply CDP 1(a) or 1(b) Apply CDP 2(a) or 3 YES Apply CDP 2(a) or 3 Residue is Cat. Z YES Ship Keel laid after 01/01/2007 NO Apply CDP 2(a) or 2(b) or 3 NO YES No discharge requirements Residue is OS NO No transport allowed

24 Stripping Requirements ( in litres) Ship Details Category X Category Y Category Z New ships : keel laid after 1 January IBC ships until 1 January tolarence tolarence tolarence BCH ships tolarence tolarence tolarence Other ships: keel laid before 1 January 2007 N/A N/A Empty to the most possible extent

25 CLEANING AND DISPOSAL PROCEDURES (CDP) (START AT THE TOP OF THE COLUMN UNDER THE CDP NUMBER SPECIFIED AND COMPLETE EACH ITEM PROCEDURE IN THE SEQUENCE WHERE MARKED) No Operation Procedure Number 1(a) 1(b) 2(a) 2(b) 3 1 Strip tank and piping to maximum extent, at least in compliance with the procedures in section 3 of this Manual X X X X X Apply prewash in accordance with Addendum B of this 2 Manual and discharge residue to reception facility X X Apply subsequent wash, additional to the prewash, with: * a complete cycle of the cleaning machine(s) for ships built 3 before 1 july 1994 X * a water quantity not less than calculated with ''k''= 1.0 for ships built on after 1 july 1994 Apply ventilation procedure in accordance with Addendum C 4 of this Manual X Ballast tanks or wash tank to commercial standads 5 X X X X Ballast added to tank 6 X Conditions for discharge of ballast / residue / water mixtures 7 other than prewash:.1 distance from land > 12 nautical miles X X X.2 ship's speed > 7 knots X X X.3 water depth > 25 meters X X X.4 Using underwater discharge (not exceeding permissible discharge rate) X X 8 Conditions for discharge of ballast:.1 distance from land > 12 nautical miles X.2 water depth > 25 meters X Any water subsequently introduced into a tank may be 9 discharged into the sea without restrictions X X X X X

26 ADDENDUM B Prewash Procedures This appendix explains how these prewash procedures should be performed and how the minimum volumes of washing media to be used should be determined. Smaller volumes of washing media may be used based on manual verification testing to the satisfaction the Administration. Where reduced volumes are approved an entry in that effect must be recorded in the Procedures and Arrangements Manual. The applicable safety consideration listed below should be taken into account when developing procedures employing recycling of wash water, or when washing is conducted with a medium other than water. Then Standards are concerned with the marine environmental aspects of the cleaning of cargo tanks which have contained noxious liquid substances, and the discharge of residue/water mixtures from these operations. Certain of these operations are potentially hazardous but no attempt is made in the Standards to lay down safety standards covering all aspects of these operations. For a description of potential hazards reference should be made to the IBC or BCH Codes and other documents as developed and published the relevant associations or organizations, e.g. the Tanker Safety Guide (Chemicals)of the International Chamber of shipping(ics).some potential Safety hazards are mentioned below. Compatibility: In mixing residue / water mixtures containing different substances, compatibility should be carefully considered. Electrostatic hazards: The hazards associated with the generation of electrostatic charges during the cargo tank washing should be carefully considered. Tank entry hazards: The safety of persons required entering cargo tank or slop tanks for any purpose should be carefully considered. Reactivity hazards: The water washing of cargo tanks and slop tanks containing residues of certain substances may produce dangerous reactions and should be carefully considered. Ventilation.hazards: The hazards associated with tank ventilation identified in the ICS Tanker Safety Guide (Chemicals) should be carefully considered. Line Cleaning hazards: The hazards associated with line clearing identified in the ICS Tanker Safety Guide (Chemicals) should be carefully considered. Fire hazards : The fire hazards associated with the use of cleaning media other than water should be carefully considered. For tank washing equipments and technical details please refer to Section 2.9 of the Manual. For washing water heating arrangements please refer to 2.9 of the Manual. For operating pressures and cycles of cleaning machines please refer to Section 2.9 of the Manual. When the one of the fixed tank cleaning machines is out of service, the portable washing will be used instead. Fixed tank cleaning machines and portable tank cleaning hatch positions are given in PLAN VI Deck Arrangement. drawing.

27 Washing medium (cleaning agents)other than water is not to be used to wash a cargo tank. Prewash procedures for non-solidifying substances without recycling 1. Tanks shall be washed by means of a rotary jet(s),operated at sufficiently high water pressure, in the case of category X substances, cleaning machines shall be operated in such locations that all tank surfaces are washed. In the case of Category Y substances only one location need be used. 2. During washing the amount of liquid in the tank shall be minimized by continuously pumping out slops and promoting flow to the suction point. If this condition cannot be met, the washing procedure shall be repeated three times, with thorough stripping of the tank between washings. 3. Those substances which have a viscosity equal to or greater than 50 mpa. At 20 C shall be washed with hot water (temperature at least 60 C),unless the properties of such substances make he washing less effective. 4. The quantities of wash water used shall not be less than those specified in paragraph 20 or determined according to paragraph After prewashing, the tanks and lines shall be thoroughly stripped. Prewash procedures for solidifying substances without recycling 6. Tanks shall be washed as soon as possible after unloading. If possible, tanks should be heated prior to washing. 7. Residues in hatches and manholes should preferably be removed prior to the prewash. 8. Tanks shall be washed by means of a rotary jet(s) operated at sufficiently high water pressure and in locations to ensure that all tank surfaces are washed. 9. During washing the amount of liquid in the tank shall be minimized by pumping out slops continuously and promoting flow to the suction point. If this condition cannot be met, the washing procedure shall be repeated three times with thorough stripping of the tank between washings. 10. Tanks shall be washed with hot water (temperature at last 60 C),unless the properties of such substances make the washing less effective. 11. The quantities of wash water used shall not be less than those specified in paragraph 20 or determined according to paragraph After prewashing, the tanks and lines shall be thoroughly stripped. Prewash procedures with recycling of washing medium 13. Washing with a recycled washing medium may be adopted for the purpose of washing more than one cargo tank. In determining the quantity, due regard must be given to the expected amount of residues in the tanks and the washing medium and whether any initial rinse or flushing is employed. Unless sufficient data are provided, the calculated end concentration of cargo residues in the washing medium shall nor exceed 5% based on nominal stripping quantities.

28 14. The recycled washing medium shall only be used for washing tanks having contained the same or similar substance. 15. A quantity of washing medium sufficiently to allow continuous washing shall be added to the tank or tanks to be washed. 16. All tank surfaces shall be washed by means of a rotary jet(s) operated at sufficiently high pressure. The recycling of the washing medium may either be within the tank to be washed or via another tank, e.g. a slop tank. 17. The washing shall be continued until the accumulated throughput is not lees than that corresponding to the relevant quantities given in paragraph 20 or determined according to paragraph Solidifying substances and substances with viscosity equal to or greater than 50 mpa.s at 20 C shall be washed with hot water (temperature at least 60 C) when water is used as the washing medium, unless the properties of such substances make the washing less effective. 19. After completing the tank washing with recycling to the extent specified in paragraph 17, the washing medium shall be discharged and the tank thoroughly stripped. Thereafter, the tank shall be subjected to a rinse, using clean washing medium, with continuous drainage and discharged to a reception facility. The rinse shall, as a minimum, cover the tank bottom and be sufficient to flush the pipelines, pump and filter. Slop pumping out procedure At manifold the intended cargo line is connected to the slop manifold line by means of common line. The cargo pump of each cargo tank is used to transfer the slops from the intended cargo tanks to lop tank with this connection and slop tank drop line accordingly. Minimum quantity of water to be used in a prewash 20. The minimum quantity of water to be used in a prewash is determined by the residual quantity of noxious liquid substance in the tank, the tank size, the cargo properties, the permitted concentration in any subsequent wash water effluent, and the area of operation. The minimum quantity is given by the following Formula; Q = k (15R 08+5r 07 xv/1000) Where Q= The required minimum quantity in m3 r= The residual quantity per tank in m3.the value of r shall be the value demonstrated in the actual stripping efficiency test, but shall not be taken lower than m3 for a tank volume of 500 m3 and above, and m3 for a tank volume of 100 m3 and below. For tank sizes between 100 m3 and 500 m ³ the minimum value of r allowed to be used in the calculations is obtained by linear interpolation.

29 For category X substances, the value of r shall either be determined based on stripping tests according to the Manual, observing the lower limits as given above, or be taken to be 0.9 m3. R=tank volume in m3..= a factor having values as follows: Category X, non-solidifying, low-viscosity substance,k_1.2 Category X, solidifying or high-viscosity substance, k=2.4 Category Y, non-solidifying, low-viscosity substance, k=0.5 Category Y, solidifying or high-viscosity substance k= Verification testing for approval of prewash volumes lower than those given in paragraph 20 may be carried out to the satisfaction of the Administration to prove that the requirements of regulation 13 are met; taking into account the substances the ship is certified to carry. The prewash volume so verified shall be adjusted for other prewash conditions by application of the factor k as defined in paragraph 20.

30 ADDENDUM C Ventilation Procedures Cargo residues of substances with a vapour pressure greater than 5x10 3 Pa at 20 C may be removed from a cargo tank by ventilation. Before residues of noxious liquid substances are ventilated from a tank the safety hazards relating to cargo flammability and toxicity should be considered. With regard to safety aspects, the operational requirements for openings in cargo tanks in the International Bulk Chemical Code, the Bulk Chemical Code, and the ventilation procedures in the ICS Tanker Safety Guide (Chemicals)should be consulted. Port authorities may also have regulations on cargo tank ventilation. The procedures for ventilation of cargo residues from a tank are as follows: The pipelines should be drained and further cleared of liquid by means of ventilation equipment; The list and trim should be adjusted to the minimum levels possible so that evaporation of residues in the tank is enhanced; Ventilation equipment producing an air jet which can reach the tank bottom shall be used. Figure in next page could be used to evaluate the adequacy of ventilation equipment used for ventilating a tank of a given depth. The min.flow rate of the ventilation system to adequately ventilate the bottom and all parts of each cargo tanks is 30 m/sec ; 3000 m3/h. Ventilation equipment is placed in the tank opening closest to the tank sump or suction point; There is not any structure facing into tanks. Ventilation inlet openings (portable tank cleaning hatch)is located aft part of the tank while ventilation outlets (ducts on portable hatches)fore port of the tank. The location of the ventilation inlet/outlet is indicated on the drawing PLAN VI- Deck Arrangement When the flammable vapor concentration at the outlets has been reduced to the 30% of the lower limits and in the case of a toxic product, the concentration does not present a significant health hazard, the ventilation procedures may be continued at cargo tanks deck level. Ventilation equipment should, when practicable, be positioned so that the air jet is directed at the tank sump or suction point and impingement of the air jet on tank structural members is to be avoided as much as possible. Ventilation shall continue until no visible remain of liquid can be observed in the tank. This shall be verified by a visual examination or an equivalent method.

31 LIST OF DOCUMENTS : - Cargo Pump FRAMO SD150 Specification and Performance Curves - Portable Cargo Pump FRAMO TK-80 Specification and Performance Curves - Ballast Pump FRAMO SB200 Specification and Performance Curves - Slop Pump FRAMO SD100 Specification and Performance Curves - Tank Cleaning Pump ALLWEILER AG NAM-F Specification and Capacity Curves - Tank Cleaning Machines Technical specifications - Performance data table of each cargo tank fixed cleaning machines

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42 TECHNICAL SYSTEM DATA No. Date/sign.: Page: Rev.:A /PET /PET 1 System data Hydraulic oil consumers (A) Design capacity Hydraulic data Consumers m 3 /h mlc kg/dm 3 cst l/min bar 12 of Cargo pumps SD ,8 1, of Cargo pumps SD ,8 1, of Cargo pumps SD ,8 1, of Portable pump TK ,0 1, of Ballast pumps SB ,025 1, Hydraulic oil supply 3 of Electric hydraulic power packs (A4V355 pump) 3 x 535 l/min = 1605 l/min / 267bar Simultaneous operation (design) 4 of Cargo pumps SD150 (1520 m³/h mlc 0,8 kg/dm 3 1,0 cst) = 1288 l/min / 267 bar 2 of Cargo pumps SD100 (240 m³/h mlc 0,8 kg/dm 3 1,0 cst) = 238 l/min / 267 bar Total (1760 m³/h mlc 0,8 kg/dm 3 1,0 cst) = 1526 l/min / 267 bar Simultaneous operation (examples) Number and type of consumers Max. oil consumption l/min Number and type of power packs Max. oil supply l/min 1 x SD x Electric x SD x Electric x SD x Electric x SD x SD x Electric 1605 Heat dissipation - Ventilation Hydraulic power unit heat dissipation: 41 kw Recommended ventilation capacity for hydraulic power pack room: 3,72 m³/s (Based upon inlet temperature 35 C, 10 C temperature rise, specific heat capacity 1.005kJ/kgK and gas constant 0.287kJ/kgK.).

43 TECHNICAL SYSTEM DATA No. Date/sign.: Page: Rev.:A /PET /PET 2 Component data Electric motors Characteristics Main power packs Jockey pump Hydraulic oil transfer unit Number of motors Protection (IP) Power supply (V / Hz / Ph) 440 / 60 / / 60 / / 60 / 3 Power installed (kw) 270 2,6 1,3 Normal current (A) 430 4,7 2,6 Starting current (direct) (A) ,1 Efficiency (%) 95,5 Power factor (Cos ) 0,86 Hydraulic oil coolers Number of coolers 1 Type of cooling water: Seawater Heat transfer rate: 238 kw Cooling water inlet temperature: 36 C required cooling water flow: 70 m³/h Pressure drop at required flow: 27,0 mwc ( p design) 16,8 mwc ( p measuring, p 1 - p 2 ) Maximum cooling water inlet pressure: 40 mwc For cooling water pressure drop curve ( p measuring, p 1 - p 2 ), refer to the dimensional drawing for the cooling water accessories. The cooling water accessories include a spectacle orifice in the cooling water outlet line, refer to the schematic diagram below. Cooling water inlet p 1 p 2 T S T S Hydraulic oil cooler Spectacle orifice Cooling water outlet p measuring, p 1 - p 2 p design The free bore of the spectacle orifice marked adjustable (the smallest of the two) to be modified at site during commissioning and used instead of the one assembled, if required for one of the following reasons: - measured pressure drop ( p measuring, p 1 - p 2 ) is outside the min./ max. range given above. - measured pressure drop ( p measuring, p 1 - p 2 ) is within the min./ max. range given above, but higher cooling water flow than minimum required makes disturbance of the cooling water balance onboard.

44 TECHNICAL SYSTEM DATA No. Date/sign.: Page: Rev.:A /PET /PET Cargo pumps Inert gas/air consumption for one stripping sequence of each pump SD150: 1,2 Nm 3 Inert gas/air consumption for one stripping sequence of each pump SD100: 0,5 Nm 3 Required inert gas/air pressure: 6-7 bar Number of stripping sequences for each pump: 2 (max. 3) Portable winch Air consumption: 78 Nm 3 /h Required air pressure: 6-7 bar Cargo heaters (A) Design data for heating of HFO cst/ 55 C kg/m³ - 1,89 kj/kg C Characteristics Number of cargo heaters 14 Capacity (kw) 200 Heating medium data: Type Thermal oil Inlet temperature (on heater) ( C) 160 Outlet temperature: ( C) 110 Consumption: (kg/h) 6000 Pressure drop heating medium (bar) 3,2 Cargo data: Type HFO (see above) Inlet temperature (on heater) ( C) 55 Viscosity at inlet temperature (cst) 370 Flow (m³/h) 70 Pressure drop (bar) 2,3 3 Hydraulic oil and Lubricants Hydraulic oil For type of oil, see separate instruction. Total oil volume in the system except for storage/ drain tank, is approximately 6,5 m³. Lubricants Bearing grease for electric motors: Good quality lithium base or lithium complex grease. Base oil viscosity cst at 40 C. Consistency grade 2 or 3. Temperature range -30 C C continuously.

45 PUMP SPECIFICATION No.: Date/Sign.: /PET Page: 1 of 1 Rev.: A /LPL TYPE: SD150-6 DTHH107-B314 PUMP DATA SERVICE: Cargo CASING: MATERIALS IMPELLER: EN SHAFT: CF3M+Mo EN DRAWING/INFORMATION DRAWING NO: REMARKS: DRAWINGS, Calculation procedure INSTALLATION AND CONSTRUCTION Pipestack specification Internal use only CHARACTERISTIC: DUTY: TEST FM: REMARKS: Capacity (m3/h) Head (mlc) PERFORMANCE DATA Specific gravity (kg/dm3) 0,8 1,0 Viscosity (cst) 1,0 1,0 Power required (kw) 118,5 106,0 Speed (rpm) Hydraulic oil flow (l/min) Hydraulic oil pressure (bar) Control valve setting: 322 l/min 267 bar ADDITIONAL INFORMATION Control valve codification: STC30-T 3-*-P-R Total weight, empty: Oil volume: 618 kg 54 litre Option: Temp sensor Impeller diameter: 314 Internal use only: A71313

46 PUMP SPECIFICATION No.: Date/Sign.: /PET Page: 1 of 1 Rev.: A /LPL TYPE: SD100-6 DTHH28-D220 PUMP DATA SERVICE: Cargo CASING: MATERIALS IMPELLER: EN SHAFT: CF3M+Mo EN DRAWING/INFORMATION DRAWING NO: REMARKS: DRAWINGS, Calculation procedure INSTALLATION AND CONSTRUCTION Pipestack specification Internal use only CHARACTERISTIC: DUTY: TEST FM: REMARKS: Capacity (m3/h) Head (mlc) PERFORMANCE DATA Specific gravity (kg/dm3) 0,8 1,0 Viscosity (cst) 1,0 1,0 Power required (kw) 37,8 33,8 Speed (rpm) Hydraulic oil flow (l/min) Hydraulic oil pressure (bar) Control valve setting: 109 l/min 267 bar ADDITIONAL INFORMATION Control valve codification: STC25-T-*-P-R Total weight, empty: Oil volume: 210 kg 20 litre Option: Temp sensor Impeller diameter: 220 Internal use only: A18094

47 PUMP SPECIFICATION No.: Date/Sign.: /PET Page: 1 of 1 Rev.: TYPE: TK80-2 DUHH16-A168 PUMP DATA SERVICE: Portable CASING: MATERIALS IMPELLER: EN SHAFT: EN EN DRAWING/INFORMATION DRAWING NO: REMARKS: DRAWINGS, Calculation procedure INSTALLATION AND CONSTRUCTION CHARACTERISTIC: DUTY: TEST FM: REMARKS: Capacity (m3/h) Head (mlc) PERFORMANCE DATA Specific gravity (kg/dm3) 1 1,0 Viscosity (cst) 1,0 1,0 Power required (kw) 22,9 22,9 Speed (rpm) Hydraulic oil flow (l/min) Hydraulic oil pressure (bar) Control valve setting: 72 l/min 267 bar ADDITIONAL INFORMATION Control valve codification: SC20/TK80 Total weight, empty: 73 kg Impeller diameter: 168 Internal use only:

48 PUMP SPECIFICATION No.: Date/Sign.: /PET Page: 1 of 1 Rev.: A /LPL TYPE: SB200-3 MUHH90-A372 PUMP DATA SERVICE: Ballast CASING: MATERIALS IMPELLER: EN SHAFT: CC333G EN DRAWING/INFORMATION DRAWING NO: REMARKS: DRAWINGS, Calculation procedure INSTALLATION AND CONSTRUCTION Pipestack specification Internal use only CHARACTERISTIC: DUTY: TEST FM: REMARKS: Capacity (m3/h) Head (mlc) PERFORMANCE DATA Specific gravity (kg/dm3) 1,025 1,0 Viscosity (cst) 1,0 1,0 Power required (kw) 35,9 35,1 Speed (rpm) Hydraulic oil flow (l/min) Hydraulic oil pressure (bar) Control valve setting: 115 l/min 267 bar ADDITIONAL INFORMATION Control valve codcification: STC30-T 1-*-P-R Total weight, empty: Oil volume: 487 kg 54 litre Impeller diameter: 372 Internal use only: A11533

49 PUMP SPECIFICATION No.: Date/Sign.: /PET Page: 1 of 1 Rev.: TYPE: SD150-6 DTHH80-B314 PUMP DATA SERVICE: Cargo CASING: MATERIALS IMPELLER: EN SHAFT: CF3M+Mo EN DRAWING/INFORMATION DRAWING NO: REMARKS: DRAWINGS, Calculation procedure INSTALLATION AND CONSTRUCTION Pipestack specification Internal use only CHARACTERISTIC: DUTY: TEST FM: REMARKS: Capacity (m3/h) Head (mlc) PERFORMANCE DATA Specific gravity (kg/dm3) 0,8 1,0 Viscosity (cst) 1,0 1,0 Power required (kw) 79,5 71,1 Speed (rpm) Hydraulic oil flow (l/min) Hydraulic oil pressure (bar) Control valve setting: 223 l/min 267 bar ADDITIONAL INFORMATION Control valve codification: STC30-T 3-*-P-R Total weight, empty: Oil volume: 618 kg 54 litre Option: Temp sensor Impeller diameter: 314 Internal use only: A71325