Sample LNG Cargo Handling (Booklet)

LNG Cargo Handling Manual

(Booklet For Cargo Operation)

Ⅰ. Loading

1.    Mooring Operation

1-1.       Confirm the mooring arrangement and work procedure of each terminal according to the “Project Standard Gcd/or “Ship/Shore Confirmation List” at Cargo meeting and BTM.

1-2.       The mooring ropes are lowered to the decided height from the surface of the sea water for preparation of berthing with following the instructions of the Master before the vessel is located in front of the berth. But some terminal request to lower spring line after ship’s body touched the fender.

1-3.       Wind up spring line from inside in order to avoid pinching by outer line.

1-4.       After confirming the workers are away from the rope/s on the dolphin, start adjusting the condition of the ropes that are held to the hook.

1-5.       When the signal concerning mooring work has been decided between ship and shore, follow the signal.

1-6.       When adjusting the condition of the mooring lines, contact with CCR and L/S while berthing. The duty officer reports the adjusting to the terminal.

1-7.       The duty officer confirms the tension monitor and instructs the deck watch person to adjust the mooring line/s so that we keep the mooring condition in good.

2.    Cargo Tank Level Control

2-1.  Cargo tank levels should be adjusted until the liquid levels pass the equator range of the tank so that the level of all cargo tanks may pass almost at the same time.

2-2.     After the liquid levels pass the equator range, the cargo balance among each tank should be adjusted to about    m³ according to the Level control table for loading, e.g.” Tsumikiri  Hyou ” in order to work the topping off operation at interval of about      minutes.

3.    Arm Cool down & Ship’s Line Cooldown

3-1.     In loading port, Arm Cool-down is done with LNG, which has been sent with the pump on the shore side.

3-2.     A required time of Arm Cool down：    minutes.

3-3.     The Liquid Manifold Manual valves and ESD valves are opened after obtaining the permission of the terminal, and the pressure of the manifold line is noted throughout working.

3-4.     If the manifold pressure rises abnormally, report the pressure rising to the CCR.

3-5.     Opening degree of the valve is adjusted to lower the pressure by an instruction of the duty officer.

3-6.    The increase tightening for the flange of the manifold and / or the short distance piece is done with the torque wrench if necessary during the cool-down work.

3-7.    When beginning Arm Cool-down, the opening degree of the Liquid Manifold Manual valves are as follows;   

VL013

%

VL033

%

VL043

%

3-8.     Ship’s Liquid Line Cool-down is carried out continuously after finishing Arm Cool-down, and the required time of the Liquid Line Cool down is      minutes.

4.    ESDS

4-1.     The following activates ESDS:

·         Manual Switch

·         Melting Plug (Fire) / 98 deg.C~104 deg.C

·         High Level in Cargo Tanks / xx%

·         Low Hydraulic Pressure / xxxkPaGauge (Ex. 4200kPaGauge)

·         Low Control Air Pressure / xxxkPaGauge(Ex.350kPaGauge)

·         Low Pressure in Pneumatic Link / xx kg/cm²Gauge (Ex.2.0kg/cm²Gauge)

·         Electrical Power Failure

·         ESDS Signal from Shore

4-2.     Refer to LNG CARGO HANDLING MANUAL Manual “02.CHI-006/11/ ESDS OPERATIONS”

5.    High Duty Compressor Operation

5-1.     Usually, start H/D Compressor/s before start loading.

5-2.     Confirm the operation data every hour, and record the necessary items on the check sheet every two hours during operation H/D compressor.

5-3.     Refer to LNG CARGO HANDLING MANUAL “02.CHI-003/11 / Gas Compressor  Operations”

6.    Cargo Tank Pressure and Hold Pressure Control

6-1.     So as to control the tank pressure around 10 kPaGauge while loading operation, operate the H/D Compressor/s suitably.

6-2.     During normal loading operation, as ship’s tank pressure rises in following occasion.

·         Right after start loading operation

·         After increasing rate of loading

·         When liquid level passes cargo tank equator ring range.

            Pay attention to the pressure rises.

6-3.     Keep Hold pressure lower than Cargo tank pressure.

7.    De-ballasting Operation

7-1.     Start de-ballasting / ballasting operation after becoming loading / discharging operation regularly.

7-2.     Notify the duty engineer before starting up ballast pumps and that the work has been finished.

7-3.     See that the ship’s draft, trim and heel are properly maintained.

7-4.     Adjust ballasting rate to finish ballasting operation about one hour before cargo discharging of cargo completion.

7-5.     Strip ballast water using eductor system as much as possible in order to minimize amount of ballast water when de-ballasting operation. This operation may be carried out after sailing.

7-7.     Refer to:

§  Working Instruction about “Operation of Ballast Pump”

§  “Ballasting Plan”

§  SMS Manual;

§  ZZ-S-P-07.51.02/ Ballasting/De-Ballasting”

§  LNG CARGO HANDLING MANUAL;

§  “03.CWP-003/11/Risk Assessment of the Cargo Handling Work / -2.15 Ballasting Console”

8.    Operational Limitation (Weather and Sea condition)

8-1.     Confirm the operation Limitation of each terminal according to the “Project Standard Guidelines for Cargo Handling” and/or “Ship/Shore Confirmation List”.

8-2.     Fill in the operation Limitation on “Loading Operation Plan” and “ Discharging Plan”.

9.    Float Gauge Handling

9-1.     When winding down and up Float Gauge, turn the handle slowly.

9-2.     Standard for speed of winding up is One turn of the handle per 2 seconds.

9-3.     Compare Float Gauge Level and CTS Level of Cargo Tank periodically.

9-4.     Refer to working instruction about “ Operation of Float Gauge”

10. Duty of Deck Crew at Constant Cargo Operation

＊ Don’t hesitate in asking the officer on duty about your question.

10-1.   Manifold watch checks the following conditions and reports them to the CCR regularly.

§  Surrounding the manifold (To make sure that there is no leakage, abnormal sound, or other abnormalities nearby.)

§  Manifold pressure

§  Pneumatic hose and it’s pressure

§  Communication cables

§  Gangway

§  Liquid and vapor arm connection

§  Vessel movement and position

§  Water curtain

§  Sea surface, Weather

10-2.   Dome-side watch checks the following conditions and reports them to the CCR regularly.

·         Dome-side, Crossover, Cat walk, Compressor room, Machinery room, Upper deck, Compressor room and its machinery, Boatswain locker, Hydraulic pump r’m (To make sure that there is no leakage, abnormal sound, or other abnormalities nearby.)

·         Sea surface ( Is there any oil or waste on sea surface around the vessel? )

·         Mooring lines and their adjustment

·         Heat of fire in the accommodation

·         Float gauge

·         Turn the deck lights on/off

·         Fire wires

·         Fire door

11. Other Information

11-1.   Pay attention the change of weather and sea condition, and when you feel the sudden change of the weather, report it to CCR.

11-2.   Standing water on the deck is discharged to the sea through “Oil Catcher” after confirming not to include any oil.

11-3.   Loading / Unloading of ship stores is strictly prohibited during cargo operation, except when written authorization may be delivered on request by the Terminal following Port Authority approval and only when no cargo handling operations are being conducted.

11-4.   Communication method between Ship and Shore use transceivers normally. Hot line and Extension phone (Plant phone) are also available.

11-5.   Main information item to the terminal while loading at their request：

·         Request start/stop loading pump

·         Request increase/decrease loading rate

·         Periodical report during discharging (every hour)

       ・loading rate

       ・total quantity onboard

       ・total remaining quantity

       ・each tank level/pressure/volume/etc.

       ・wind direction and speed, etc.

·         One hour before and 30 minutes before starting rate down

·         Estimate time of completion loading

·         The above items varies every terminals.

Ⅱ. Discharging

1.    Mooring Operation

1-1.       Confirm the mooring arrangement and work procedure of each terminal according to the “Project Standard Guidelines for Cargo Handling” and/or “Ship/Shore Confirmation List” at Cargo meeting and BTM.

1-2.       The mooring ropes are lowered to the decided height from the surface of the sea water for preparation of berthing with following the instructions of the Master before the vessel is located in front of the berth. But some terminal request to lower spring line after ship’s body touched the fender.

1-3.       Wind up spring line from inside in order to avoid pinching by outer line.

1-4.       After confirming the workers are away from the rope/s on the dolphin, start adjusting the condition of the ropes that are held to the hook.

1-5.       When the signal concerning mooring work has been decided between ship and shore, follow the signal.

1-6.       When adjusting the condition of the mooring lines, contact with CCR and L/S while berthing. The duty officer reports the adjusting to the terminal.

1-7.       The duty officer confirms the tension monitor and instructs the deck watch person to adjust the mooring line/s so that we keep the mooring condition in good.

2.    Cargo Tank Level Control

2-1.   Cargo tank levels should be adjusted according to the Level control table for discharging, e.g. ”Agekiri Hyou” in order for cargo balances among each tank to make from     m³ to     m³ before starting slow down operation.

2-2.     The target of interval for stopping cargo pump is between   and   minutes.

3.    Arm Cool down & Ship’s Line Cool down

3-1.     In discharging port, Arm Cool down is done with LNG, which has been sent with the spray pump/s on board.

3-2.     Time required time of Arm Cool down：    minutes.

3-3.     The manifold cool down valve/s are opened and adjusted after obtaining the permission of the terminal while cool down operation.

3-4.     During the cool down operation, the increase tightening for the flange of the manifold and the short distance piece is done with the torque wrench together with the terminal staff under supervision of ship’s duty officer and a senior operator of the terminal if necessary.

3-5.     Before stop the spray pump for finishing arm cool down, confirm the completion of the arm cool down operation to the terminal.

3-6.     Regarding the operation of spray pump, pay attention to the following;

·         Predetermined valve opening at the time of start the spray pump is  ? %.

·         When starting the spray pump, D/S watch confirms the above opening, and reports to CCR.

·         Operate the spray pump under the rated capacity as much as possible.

·         The Crewmember on the deck makes sure there is no leakage, abnormal sound, or other abnormalities near the dome top and manifold.

·         Refer to LNG CARGO HANDLING MANUAL “ 02.CHI-002/11 / Cargo & Spray Pump Operation”

4.    ESDS

4-1.     The following activates ESDS:

·         Manual Switch

·         Melting Plug (Fire) / 98 deg.C~104 deg.C

·         High Level in Cargo Tanks / xx%

·         Low Hydraulic Pressure / xxxkPaGauge (Ex. 4200kPaGauge)

·         Low Control Air Pressure / xxxkPaGauge(Ex.350kPaGauge)

·         Low Pressure in Pneumatic Link / xx kg/cm²Gauge (Ex.2.0kg/cm²Gauge)

·         Electrical Power Failure

·         ESDS Signal from Shore

4-2.     Refer to LNG CARGO HANDLING MANUAL Manual “02.CHI-006/11/ ESDS OPERATIONS”

5.    Main Cargo Pump Operation

5-1.     Predetermined valve opening at the time of start the Main Cargo pump is  ? %.

5-2.     When starting the cargo pump, D/S watch confirms the above opening, and  reports to CCR.

5-3.     Operate the cargo pump under the rated capacity as much as possible.

5-4.     The Crewmember on the deck makes sure there is no leakage, abnormal sound, or other abnormalities near the dome top and the manifold.

5-5.     Refer to LNG CARGO HANDLING MANUAL “ 02.CHI-002/11 / Cargo & Spray Pump Operation”

6.    Cargo Tank Pressure and Hold Pressure Control

6-1.     Cargo tank pressure is controlled with R.G.B. operation by terminal around 10 kPaGauge while discharging operation.

6-2.     Keep Hold pressure lower than Cargo tank pressure.

7.    Ballasting Operation

7-1.       Start de-ballasting / ballasting operation after becoming loading / discharging operation regularly.

7-2.     Notify the duty engineer before starting up ballast pumps and that the work has been finished.

7-3.     See that the ship’s draft, trim and heel are properly maintained.

7-4.     Adjust ballasting rate to finish ballasting operation about one hour before cargo discharging of cargo completion.

7-5.     Strip ballast water using eductor system as much as possible in order to minimize amount of ballast water when de-ballasting operation. This operation may be carried out after sailing.

7-7.     Refer to:

§  Working Instruction about “Operation of Ballast Pump”

§  “Ballasting Plan”

§  SMS Manual;

§  “ZZ-S-P-07.51.02/ Ballasting/De-Ballasting”

§  LNG CARGO HANDLING MANUAL;

§  “03.CWP-003/11/Risk Assessment of the Cargo Handling Work / -2.15 Ballasting Console”

8.    Operational Limitation (Weather and Sea condition)

8-1.     Confirm the operation Limitation of each terminal according to the “Project Standard Guidelines for Cargo Handling” and/or “Ship/Shore Confirmation List”.

8-2.     Fill in the operation Limitation on “Loading Operation Plan” and “ Discharging Plan”.

9.    Float Gauge Handling

9-1.     When winding down and up Float Gauge, turn the handle slowly.

9-2.     Standard for speed of winding up is One turn of the handle per 2 seconds.

9-3.     Compare Float Gauge Level and CTS Level of Cargo Tank periodically.

9-4.     Refer to working instruction about “ Operation of Float Gauge”

10. Duty of Deck Crew at Constant Cargo Operation

v  Don’t hesitate in asking the officer on duty about your question.

10-1.   Manifold watch checks the following conditions and reports them to the CCR regularly.

§  Surrounding the manifold 　(To make sure that there is no leakage, abnormal sound, or other abnormalities nearby.)

§  Manifold pressure

§  Pneumatic hose and it’s pressure

§  Communication cables

§  Gangway

§  Liquid and vapor arm connection

§  Vessel movement and position

§  Water curtain

§  Sea surface, Weather

10-2.   Dome-side watch checks the following conditions and reports them to the CCR regularly.

·         Dome-side, Crossover, Cat walk, Compressor room, Machinery room, Upper deck, Compressor room and its machinery, Boatswain locker, Hydraulic pump r’m (To make sure that there is no leakage, abnormal sound, or other abnormalities nearby.)

·         Sea surface ( Is there any oil or waste on sea surface around the vessel? )

·         Mooring lines and their adjustment

·         Heat of fire in the accommodation

·         Float gauge

·         Turn the deck lights on/off

·         Fire wires

·         Fire doors

11. Other Information

11-1.   Pay attention the change of weather and sea condition, and when you feel the

            sudden change of the weather, report it to CCR.

11-2.   Standing water on the deck is discharged to the sea through “Oil Catcher” after confirming not to include any oil under witness of the terminal staff.

11-3.   Loading / Unloading of ship stores should be carried out after connection of the bonding cable until the opening of Vapor manifold ESD valve. 

If it is not completed until the opening of the valve, it shall be carried out after completion of the draining and purging liquid and vapor arms.

11-4.   Communication method between Ship and Shore use transceivers normally.  Hot line and Extension phone (Plant phone) are also available.

11-5.   Main information item to the terminal while discharging at their request：

·         Start/Stop spray pump for arm cool-down

·         Start/Stop cargo pump

·         Request start/stop RGB

·         Periodical report during discharging (every hour)

       ・discharging rate

       ・total discharging quantity

       ・total remaining quantity

       ・each tank level / pressure / etc.

       ・wind force / direction, etc.

·        One hour before and 30 minutes before starting rate down

·         Estimate time of completion discharging

v  The above items varies every terminals.