LNG Simulator LNG Carrier Rev. No.: 1 Discharging ARRIVAL loading &ballasting plan prepared & signed by all Deck and Engine officers and approved by Master operation monitoring record sheets printed out and available All valves on sea side manifold shut and blind flanges fully bolted LNG vaporizer confirmed ready for operation (Steam Open) HD compressor(s) confirmed ready for operation Vessel s liquid header & crossover confirmed cold ( -100 C) Confirm Water ballast lines filled with water ((water hammer precautions observed by inching) (Make sure line not in vacuum before opening) & ballast system main hydraulic pump confirmed running by observing pressure Loading computer confirmed online (Monitor Station No. 3) Loading computer longitudinal strength setting confirmed as at sea (recommended) Trim & list adjusted (Even keel &upright) Clocks synchronised (CCR/IAS/ENG) Use Simulator Time (Set to zero by Instructor) Gangway secured Ship s impressed current system switched off Duty engineers informed all fast time by CCR Confirmed by C/O Page 5 Manifold - Stbd side Page 11 - Vaporisers Page 8 HD Compressor Page 4 Pipeline Operation completed before arrival Status Page - Pressure 1,500 kpa Pg 22 Stability- Tools-Online Interface-Monitor Mode 5mins Page 22 Stability Tools Options Criteria Tab Status Page Call Engine Room Confirmed by Deck Watch Electrician to confirm from for d station 2350LT by CCR 1
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Duty engineer confirmed time steam off main turbine isolated ESD Fibre-optic cable connected ESD Electric cable connected Communications tested with Shore Safety inspection carried out by Berth Master on arrival Safety meeting carried out (ship/shore checklist) Updated information received from ship/shore meeting shared with CCR / Deck Team tank float level gauges lowered for CTM (After CTM wind up and lower again after level in CT reach 1m). Stowage level 27.5 m, Normal correction 10cm. Shore tank(s) pressure confirmed Water curtain started Manifold drip tray drain valves shut Manifold drip tray drain scoops swung out overboard Un-Blocking of CTMS ESD (99.5 %- ESD activate) and TPS (99.0%- Filling Valve Closes) Alarms to be verified and witnessed by Master ARMS CONNECTION (During Ship Shore Meeting) Gas engineer present at the manifold Blind Flange Removed Confirmed by Duty engineer 2355LT Confirmed by G/E Confirmed by G/E Working channels confirmed Escorted by Ship s Officer Berth Master, Master; C/O, C/E (+ Duty Officer) By Chief Officer Gas Engineer (at least 10 min before CTM) kpa (G) Confirmed by G/E Confirm from Deck Watch Confirm from Deck Watch Use Indicator Plate & Make Logbook entry By OOW & G/E Manifold Area Monitor Page 5 Page 5 - Manifold 2
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Arms connected Port side L 4- L3 V - L2 Arms leak tested Arms purged by nitrogen INITIAL CTMS LNG liquid drained from liquid header to cargo tanks at least ten (10) minutes prior to initial CTMS All manifold ESD valves shut Free Flow to boiler and/or LD compressor to be stopped Gas burning stopped Gas master valve CG-930 confirmed shut BOG flow meter reading recorded tank pressures from IAS recorded tank float gauge readings recorded CCR remote reading Before Unloading recorded Tanks Volume for each tank Recorded and Total Volume Calculated Page 5 - Manifold Liquid @ 400 kpa Vapour @ 100kPa O 2 1% Vol Advise Duty Engineer no gas burning during cargo Operation Request confirmation from Duty Eng. Order to CE Order to ECR Record in log book Local Readings from Tank Domes Monitors Log Book Page 6 each cargo tank WARM ESD TEST Confirm Gas Engineer or Duty OOW present at the manifold Fibre-optical ESDS powered on Electric ESDS off Status Page Status Page 3
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Manifold ESD valves in use opened Countdown & ESD activated from ship Manifold ESD valves closing time recorded Should be within 30 sec from activation Manifold ESD valves in use opened ESD Reset operational Vapour from shore valve CG-075 opened / cargo tank pressures controlled ARMS COOLDOWN Line up confirmed correct (manifold cooldown valves fully closed) Refer to Discharge Plan Discuss expected duration of arms cooldown advised Dedicated cooldown spray pump started (in recirculation) Operate manifold cooldown valves as per terminal jetty man at the manifold Arms cooldown started Safety checks on trunk deck & both manifolds carried out Request Vapour return if Tank pressure rising, check shore tank pressure, if require use H/D Position (opening) of the arm cooldown valves adjusted as per terminal request to G/E and agreed by C/O Spray header pressure gradually built up by MAN shutting spray pump return valve and adjusting discharge valve (as requested by Berth Master) Manifold pressures adjusted as per terminal request Spray pump performance monitored continuously (pump load / discharge pressure / discharge rate) Agreed flow rate and/or manifold pressure maintained and not exceeding spray pump rated flow and/or load Consider re-tightening of flange during cool down L4 - L3 V - L2 Ship = Optical L4 - L3 V - L2 Status Page Terminal pressure to be confirmed (e.g....kpa) Page 5 - Manifold min Spray pump No. 2 MAN SEQ. G/E at Manifold Frosting observed at manifold e.g. 2% CS-023, CS-033, CS-043 If Spr. P/P 2 in use CS 200 shut CS 201 variable Terminal 50 m 3 /h 44 A CCR Order 4
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Additional spray pump started (if required) to maintain spray header pressure Arms cool down completed Additional spray pump stopped prior to cooldown completion (if used) Spray return valve opened and discharge valve shut Spray pump No. 3 Advised by Berth Master Spray pump No. 3 CS300 open CS301 close Dedicated cooldown spray pump stopped Manually Spray pump No. 2 Spray return valve opened and discharge valve shut Position (opening) of cool down valves keep still open at this stage COLD ESD TEST Vapour from shore valve CG-071 confirmed open Gas engineer or duty OOW present at the manifold CS200 open CS201 close e.g. 2% CS-023, CS-033, CS-043 Fibre-optical ESDS confirmed powered on Countdown & ESD activated from shore Manifold ESD valves closing time recorded Optical position OFF ( INHIBIT) and reset ship/shore individually Optical position powered ON again from CCR Open Liquid and Vapour ESD Valves Vapour from shore valve CG-075 opened / cargo tank pressures controlled COMMENCE DISCHARGING OPERATION Ship s maximum discharging rate advised to terminal (Based on 3 arms) Discharging rate agreed (Advised in pre-arrival message due shore limitation) Status Page Opposite to warm test Shore = Optical Within 30 sec from activation Terminal consent Terminal consent Terminal consent RGB in use... m 3 /h.m 3 /h 5
LNG Simulator LNG Carrier Rev. No.: 1 Discharging LNG quantity on board...m3 LNG quantity to discharge confirmed...m 3 LNG heel quantity confirmed 8,012 m3 Line up confirmed correct Line up checked by chief officer and rechecked by gas engineer Four (4) step cargo pumps AUTO starting sequence planned Ramp Up diagram available START RETURN GAS BLOWER (RGB) (if applicable) Vapour from shore valve CG-075 confirmed 100% open RGB start requested from terminal tank pressures maintained at desired value by RGB flow adjustment (liaison with terminal) ~ OR ~ tank pressures maintained by free flow (if no RGB available) - (valve CG-075 throttled as required) RAMP UP (see discharge plan) Logbook entry R/U sequence: Tank 2 3 4 1 Keep 100% open if RGB running Terminal 12kPa (G) Observe IAS pressure trend CCR manned by two (2) officers Tank domes area manned by Gas Engineer or qualified officer and A/B Ramp up carried out as per attached sheet (AUTO SEQ.) If AUTO Sequence not available, use MANUAL Mode by 110% method Follow CARGO PUMP AUTO START SEQ Procedure Check List Confirm all Pumps on AUTO and S By and START AVAILABLE light illuminated on all tanks 6 Four (4) STEP SEQ Gas engineer confirmed standing by cargo tank liquid dome Tank No. 2 1 st cargo pump started on AUTO SEQ - recirculation ( auto set load increases to 53 A) No. 2 (S)
LNG Simulator LNG Carrier Rev. No.: 1 Discharging 2 min upon starting 1 st pump 2 nd cargo pump started on AUTO SEQ - recirculation ( auto set load increases to 53 A) 2 min upon starting 2 nd pump tank branch valve gradually opened / filling valve gradually shut COMMENCE DISCHARGING Gas engineer reported pumps running / valves position / confirm no leakage Liquid passing at manifold confirmed Manifold pressure observed within expected limits No. 2 (P) CL 207 open CL 200 shut Tank No. 2 all in order AGREE TIME Max.....kPa(G) Gas engineer confirmed standing by cargo tank liquid dome Tank No. 3 5 min upon starting previous tank discharge 3 rd cargo pump started on AUTO SEQ - recirculation ( auto set load increased to 53 A) 2 min upon starting 1 st pump 4 th cargo pump started on AUTO SEQ - recirculation ( auto set load increased to 53 A) 2 min upon starting 4 th pump tank branch valve gradually opened / filling valve gradually shut Gas engineer reported pumps running / valves position / confirm no leakage Manifold pressure observed within expected limits 7 No. 3 (S) No. 3 (P) CL 307 open CL 300 shut Tank No. 3 all in order Max... kpa(g) Gas engineer confirmed standing by cargo tank liquid dome Tank No. 4 5 min upon starting previous tank discharge 5 th cargo pump started on AUTO SEQ recirculation ( auto set load increased to 53 A) 2 min upon starting 5 th pump 6 th cargo pump started on AUTO SEQ - recirculation ( auto set load increased to 53 A) 2 min upon starting 6 th pump tank branch valve gradually opened / filling valve gradually shut Gas engineer reported pumps running / valves position / confirm no leakage Manifold pressure observed within expected limits No. 4 (P) No. 4 (S) CL 407 open CL 400 shut Tank No. 4 all in order Max... kpa(g) Gas engineer confirmed standing by cargo tank liquid dome Tank No. 1
LNG Simulator LNG Carrier Rev. No.: 1 Discharging 5 min upon starting previous tank discharge 7 th cargo pump started on AUTO SEQ - recirculation ( auto set load increased to 53 A) 2 min upon starting 7 th pump 8 th cargo pump started on AUTO SEQ - recirculation ( auto set load increased to 53 A) tank branch valve gradually opened / filling valve gradually shut Gas engineer reported pumps running / valves position / confirm no leakage Manifold pressure observed within expected limits Safety checks on trunk deck & both manifolds carried out, confirmed all in order before proceeding with further rate increase Ramp up continued until maximum discharge rate agreed ( 12,000 m3/h) or500 kpa (manifold) (increase each pump by 2 Amps) tank liquid levels and pressures monitored No. 1 (P) No. 1(S) CL 107 open CL 100 shut Tank No. 1 all in order Max... kpa(g) From 35 th min 50 th min since ramp up started Final Amps: No.1 CT = 50 A No. 2 CT = 60 A No. 3 CT = 60 A No. 4 CT = 58 A For 12000m3/hr Liquid header and manifold pressures monitored Safety checks on trunk deck & both manifolds carried out Notification to terminal / loading master when at full rate achieved pumps performance monitored continuously (pump load / discharge pressure / discharge rate) Compare differential Ship/Shore Manifold Pressure Set Normal CCR and Deck Watch FULL RATE DISCHARGING Agreed discharging rate maintained as long as possible and not exceeding cargo pumps rated flow and/or load If differential pressure > 300 kpa (G) inform C/O immediately 1700 m 3 /h 60 Amps (SG 0.425) 8
LNG Simulator LNG Carrier Rev. No.: 1 Discharging tank volumes staggered during discharging using small incremental adjustments to the cargo pump discharge valves Stagger adjusted as per ramp down worksheet in use Hourly cargo figures to reported to terminal CCR Follow Ramp Down Plan operation records maintained (hourly) tank level gauge readings compared (float vs. radar) at 75%, 50% and 25% of cargo volume on board Monitor Vapour Header Pressure Ensure CG075 fully open if RGB in use Confirm LNG Vaporiser ready in case required to maintain tank pressure if RGB or free flow fail Visual drafts obtained (daytime) and compared with draft gauges / CTMS / loading computer Draft, trim, list & hull stresses maintained within permissible limits Vapour arm position monitored regularly Mooring lines tension maintained within permissible limits Ship/shore safety checklist completed every four (4) hours CCR Manned by OOW unless operational activities require presence of C/O and /or Gas Engineer Inform C/O immediately in case difference outside maker tolerance Crew aware of Loading Arms envelope Between 10 and 40 tonnes BALLASTING Permission from terminal to commence ballasting operation requested Water hammer (pressure surge) effect precautions observed Ballasting planned for completion at least one (1) hour before ramp down Line up (gravity) confirmed correct Call Terminal 9
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Ballasting by gravity commenced Line up (pumps) confirmed correct (see Plan) Ballasting by ballast pumps No. 1 & No. 3 resumed Ballast tank filling stopped as per final levels defined in attached sheet Trim & list adjusted when cargo discharging operation completed Ballast pump No. 1 stopped PREPARATION FOR RAMP DOWN AND RAMP DOWN One (1) hour notice prior to ramp down given to the terminal Chief officer called CCR manned by two (2) officers Compare gauges regularly Even keel & upright Sampling stop As per night order book Communications test with terminal carried out Gas engineer confirmed standing by cargo tank liquid dome Tank No. 1 Ramp down carried out as per attached sheet Notice to Terminal given pump flow rates gradually reduced to a planned flow rate and/or load 1 st cargo pump stopped / discharge valve shut 2 nd cargo pump stopped / discharge valve shut 3 rd cargo pump stopped / discharge valve shut 4 th cargo pump stopped / discharge valve shut 5 th cargo pump stopped / discharge valve shut, confirm local Float Level reading and report to CCR R/D sequence: See R/D seq 55 min 45 min 900 m3/h 46 A No. 1 (S) CL101 shut No. 4 (S) CL 401 shut No. 2 (S) CL201 shut No. 3 (S) CL 301 shut No. 1 (P) CL 102 shut 10
LNG Simulator LNG Carrier Rev. No.: 1 Discharging 6 th cargo pump stopped / discharge valve shut confirm local Float Level reading and report to CCR 7 th cargo pump stopped / discharge valve shut confirm local Float Level reading and report to CCR STOP RETURN GAS BLOWER (RGB) (if applicable) RGB flow rate reduced to minimum prior to discharging completion RGB stop requested from terminal tank pressures lowered to an acceptable / safe value tank pressures maintained by free flow (if necessary) (valve CG075 adjusted as required) No. 4 (P) CL 402 shut No. 2 (P) CL 202 shut Terminal Terminal Approx. 6 kpa Observe IAS pressure trend COMPLETE DISCHARGING OPERATION Last pump discharge planned with reduced flow rate and interval as agreed with terminal Agreed (timely) notice prior to stoppage of last cargo pump given to the terminal Allowance for LNG liquid to be drained back to cargo tank after stoppage confirmed Last pump stoppage level / cargo tank volume confirmed (trim & list corrections included, if applicable) 8 th cargo pump stopped / discharge valve shut / discharging completed confirm local Float Level reading and report to CCR Confirm no LNG flow at manifold All liquid manifold ESD valves shut tank filling valve open (e.g. 20 %) ARMS DRAINING 900 m 3 /h 5 minutes Terminal 10 minutes 50 m 3 Sdg.1.79 m Vol.2,390 m3 No. 3 (S) CL 302 shut Terminal consent Tank No. 3 CL300 All liquid manifold ESD valves confirmed shut Gas engineer present at the manifold 11
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Line up confirmed correct ESDS blocked upon completion of draining (see discharge plan) Terminal and Ship Ship side liquid arms &manifolds confirmed liquid free FINAL CTMS All manifold ESD valves shut tank float gauge readings recorded tank pressures from IAS recorded CTMS After Unloading report calculated Request permission from Terminal to start Gas burning by free flow After free flow settle down start L/D Compressor for gas burning ARMS PURGING & DISCONNECTION Request Local Reading Tank Domes Monitors - Print screen Tank Page Gas Engineer present at the manifold Line up confirmed correct Ship side liquid/vapour arms& manifolds confirmed gas free arms confirmed disconnected Duty engineer informed arms clear / turbine warm through started Water curtain stopped (duty engineer requested - GS pump) (see Discharge Plan Procedure) CH 4 2.0% Vol Page 5 Manifold Duty engineer Status Page DEPARTURE Manifold blind flanges confirmed fully bolted & tightened tank float gauges raised & secured Page 5 Manifold Confirmed yy Gas Engineer 12
LNG Simulator LNG Carrier Rev. No.: 1 Discharging Manifold drain scoops swung inboard ESD connection powered off (terminal approval) Confirmed yy Gas Engineer Page 1 - Status Fibre-optic cable disconnected All entries in port log (time sheet) confirmed accurate Post-discharging meeting carried out Documents received on board Departure trim & list adjusted Ballast pumps stopped All ballast system valves confirmed closed as per departure condition to avoid pressure build up Line up to prevent cargo lines pressure build up confirmed correct (vapour thermal expansion precautions) Departure stability condition printed out Blocking of CTMS ESD (99.5%) and TPS (99.0%) Alarms to be verified and witnessed by Master Gangway removed (shore staff disembarked) Control Room VHF switched off Master; C/O and Duty Officer Confirm all in order and correct Trim 0.43 m and List = 0.0 degree (See Discharge Plan Procedure) (See Discharge Plan procedure) Turn NOTICE board in CCR to ESD OVERRIDE Confirmed yy Gas Engineer ADDITIONAL REQUIREMENTS Detailed line up arrangements for various stages of cargo & ballast operations attached to this checklist Rank Name Signature C/L compiled by: C/L checked by: Chief Officer Gas Engineer 1 st Officer 13
LNG Simulator LNG Carrier Rev. No.: 1 Discharging 2 nd Officer 3 rd Officer 14