Original o copia certificada, para cotejo y copia, del acta de matrimonio, original del escrito donde

The Company policy is that, where possible, all cargo, ballast and void spaces must be internally inspected on a six monthly cycle to establish the condition of steelwork, pipework,

fittings and coatings or anodes, as applicable. Defects must be reported as early as possible to allow repairs to be costed and schedule.

During the above six monthly inspections of cargo tanks any heating coils are to be inspected and tested using either steam or compressed air at their normal working pressure. In addition the heating coils must always be tested before drydock and prior to carrying any heated cargo.

6.4.1 TESTING HEATING COILS

1. Heating coils should be tested at least twice a year in vessels that are carrying heated cargoes. A careful record should be kept and every effort made to make immediate repairs if leaks or other damage is found.

2. In vessels carrying heated non-water critical cargoes heating coils must be tested before arrival at the load port(s) by the ship’s staff.

3. In vessels carrying heated water critical cargoes the heating coil must be treated before arrival at the load port(s) by the ship’s staff and also before loading witnessed by the cargo Surveyor. Ensure that a written report is signed by the Surveyor to the effect that the heating coils are completely tight and suitable for loading of the specific cargo.

4. It is desirable that all heating coils are tested with steam and not compressed air. The use of steam gives a more realistic test, and is closer to the actual conditions that the coils will be subjected to when in use. On all vessels where cargo-heating coils are fitted the tests will be carried out while steam is passing through the coils. A careful examination will be carried out of all sections especially where the coils pass through the tank deckhead or bulkheads to adjacent tank.

5. The heating coil return drains at the deck manifold should be carefully examined for any traces of previous cargo that may have entered the coils. Care should be taken if previous cargo was hazardous / toxic. Some cargoes are difficult to detect without test equipment.

6. The above tests should obviously be carried out after the respective tanks have been washed but even so, gas freeing ventilators should always be rigged and operating to protect personnel from any vapours that may be produced from the coils or leaks.

6.4.2 CARGO HEATING PRECAUTIONS

It is essential that due care is taken with regards to starting up the cargo heating process. Tendency is always hurry up and in the process causing damage to the heating coils and may in worst case scenario result in consequential damage to the Auxiliary boilers.

Procedure:

1. Ensure that all steam inlet and outlet valves on the individual deck manifolds for cargo and slop heating of all tanks are kept shut.

2. Open the main stream bypass of the cargo heating system normally located right forward on deck.

3. Open the cargo heating steam main valve gradually or if there is a warming up connection than open the warming up valve till such time as the deck heating line is sufficiently warm when the main valve can be gradually fully opened.

4. Once the cargo heating main steam valve is fully open wait till such time as the main return line is sufficiently warm and then can only start opening steam return line valves of the No.1 cargo tanks right forward.

5 Next open very gradually (initially crack and then gradually open fully) steam inlet valve to the first coil only of the No.1 cargo tanks.

6. Do not open steam to any other coil till such time as the return line of the No.1 coils on the deck steam manifold of the tank is warm.

7. It is only after the deck return line on this first coil is hot, should the return and inlet valve of the second set of coils for the No.1 tanks be opened.

8. This process is then repeated with the next set of coils and then the next till such time as all the coils are open proceeding from the forward most tank and sequentially moving aft till the aftermost tank.

The entire process of starting up from the time steam is opened to the first forward coil till the steam for the aftmost coil opened will normally take at least 24 hours or even much much longer. The process if hurried will eventually result in damage to the heating coils inside the tanks owing to water hammer generally with the pipes giving way at the deck penetrations. It is also essential that the filters and steam traps of the individual heating coils are kept clean and are regularly overhauled preferably prior loading any heating cargo.

6.5 HEATING

Heating instructions will be contained in the voyage orders. Cases sometimes arise where cargoes are to be delivered to a separate consignee who may issue heating instructions.

Prior to departure from the loading port, the Master is to ensure that clear instructions are received which detail heating requirements, carriage and discharge temperatures. If no instructions are received the Master is to contact the Operator and the Management. If instructions are received requiring the cargo to be heated to temperature above that suitable for the tank coating, the Management is to be advise immediately.

6.5.1 Cargo is only to be heated on instructions from the Company or the vessels Charterers. The Company must approve heating instructions from other sources. Cases have occurred where voyage orders erroneously required cargo heating. In such cases where the Master is in doubt about the validity of cargo heating, the office is to be informed. The Chief Officer is responsible for implementing the instructions for the heating of cargo. The Chief Officer must liase with the Chief Engineer to ensure that the cargo heating system is available to commence heating the cargo at the appropriate time. These Officers must plan the total heating operation to ensure that the specified temperature is reached and maintained with the minimum expenditure of heat energy and to ensure that there is adequate fuel, and where required, boiler water

for the voyage. The overall plan must also avoid rapid changes of temperature, which may adversely affect the quality of the cargo or unduly stress the ship’s structure.

6.5.2 When putting a steam heating system into operation the piping is to be drained completely, this will require the opening of the drain cock on the exhaust side of each coil or on the deck heater. Steam is then to be applied gradually to avoid a water hammer effect. The drain cocks are to be left open until the water runs clear, to prove that there is no in-tank leakage. If oil leakage is detected then the affected heating coil loop is to be blanked off. Leakage after heating has commenced would be indicated by a heavy consumption of water, or an unexpected increase in a tank volume. Taking water dips can be used to confirm this.

Deck mounted heaters must be operated according to the manufacturers instructions.

6.5.3 During loading the cargo temperature is to be checked as soon as possible after loading has commenced. The temperature of the incoming cargo is to be closely monitored to ensure that the cargo is not coming in at a temperature, which could damage the tank coating or possible stress the ship’s structure due to a large temperature differential between the cargo and surrounding sea water.

6.5.4 CARRIAGE

The temperature of the cargo is to be maintained as instructed in the voyage orders monitored as detailed in section 4.4.

When opening up steam supply to heating coils it should be done gradually to avoid damage by water hammer or too rapid expansion.

When heating the cargo during carriage, the maximum increase per day is never to exceed that given in the voyage.

On the loaded passage cargo temperatures must be monitored on a twice-daily basis when heating is being applied to the tanks and once per day if the heating is off. The amount of heat applied to individual tanks is to be adjusted as required according to the readings obtained. The Chief Officer is responsible for taking and recording tank temperatures, but all adjustments to the heating system will be the responsibility of the Chief Engineer.

6.5.5 DISCHARGE

The fundamental requirement for discharge of heated cargo is to ensure that the ship arrives at the discharging Terminal with the cargo at the required temperature.

Unless a very viscous crude oil or fuel oil is carried, the steam to the heating coils should be reduced on each tank at the commencement of discharge of that tank. Failure to carry this out will result in a rapid increase of temperature as the ullage increase, which can results in the cargo pump gassing up.

If for any reason the discharge has to be temporarily suspended, the manifold valve is to be shut and the top lines dropped back into the tank(s) being discharged. Depending on ambient conditions it may be necessary to re-introduce steam heating to maintain the cargo at the required discharge temperature.

Once the level of cargo has dropped below that of the heating coils, the heating should be shut off and the tank stripped dry without delay to prevent the cargo cooling to state where it becomes unpumpable.

During discharge, heating is to continue to assist with drainage. The heat supplied to the heating coils is to be reduced as the tank level falls and shut off prior to the coils becoming uncovered. Each tank is to be stripped dry immediately on completion of its bulk discharge before any cooling takes effect. The number of tanks that are to be discharged as a group, is to be limited to the number that can be promptly drained, always taking account of the different cooling effects of the sea on center and wing tanks.

Records of the supply and adjustment of heating to the cargo and of all individual tank temperatures taken throughout the voyage are to be recorded. All heating coils and deck heaters must be tested before use, after repairs in three month intervals. The Company must be informed of any deficiencies. Tests must also be carried out when changing from a low flash point cargo, or from a dirty to a clean cargo.

6.5.6 COLD CLIMATE CONDITIONS

Some cargoes, which do not require heating in tropical and temperate climates, may require heating in cold climates.

Heating instructions would normally be given in the voyage orders but if not, it is recommended that three to four days before arrival, cargo heating is carried out sufficient to ensure maximum outturn at normal discharge rate. The temperature of the cargo should never be raised above the loading temperature.