TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Contents Introduction .................................................................................................................................................. 2 Conduct of Sea Trial ...................................................................................................................................... 3 Sea trial Attendees: ................................................................................................................................... 3 SCM ....................................................................................................................................................... 3 DNVGL: - ................................................................................................................................................ 3 Vendors: -.............................................................................................................................................. 3 Transocean Personnel ........................................................................................................................... 3 Organization.............................................................................................................................................. 4 Observations: ................................................................................................................................................ 7 1. Overview of rig: ................................................................................................................................. 7 2. Safety briefing ................................................................................................................................... 8 3. Allocation of accommodation ........................................................................................................... 8 4. Reporting to manager ....................................................................................................................... 8 5. Activities:........................................................................................................................................... 9 1. Ballast Trial .................................................................................................................................... 9 2. Maneuvering Trial: ...................................................................................................................... 10 3. E0 Test: ........................................................................................................................................ 14 4. DP Commissioning (CAT): ............................................................................................................ 16 5. DP FMECA: .................................................................................................................................. 19 Documentation: .......................................................................................................................................... 19 Conclusion: .................................................................................................................................................. 20 Acknowledgement: ..................................................................................................................................... 20 Prepared By: Bhagat B R, Engineer , Engineering Design, SMAY 1 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Introduction This report illustrates the tests completed during sea trial conducted on the Semisubmersible Drilling Rig – West Regel. This report is solely based on my personal understandings and observations made during the trial. West Regel, A semisubmersible Drilling Rig which is built by Sembcorp Marine for the client (Sea Drill). The original sea trial was completed in year 2015 from 27th Oct2015 to 7th Nov 2015 at South China Sea and accepted by DNVGL and (Previous) Owner. Due to some unforeseen circumstances the owner of the rig was changed to Transocean. The rig was only reactivated in 2018 for new client (Transocean). Since the rig was ideal/not operational for a large period of almost 3 years combined with the owners request SCM had to conduct a reactivation sea trail. The second sea trails/reactivation sea trail was conducted from 9th Nov 2018 to 17th Nov 2018 at South China Sea. During this second sea trial, not all tests were carried out whereas only few of the major system activations/commissioning along with the few tests requested by the new owners were conducted. Note: This document does not contain the detail procedure neither the results of the sea trial. Figure1: West Regel during Reactivation Sea Trail 2 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Conduct of Sea Trial The sea trial program was conducted on a 24 hours per day basis until the entire requested test was fully completed. SCM representative were on duty on a rotation 12Hr/12Hr basis. Sea trial Attendees: SCM SCM Marine: SCM Commissioning: SCM Engineering: SCM Management: SCM Construction Support: DNVGL: Vendors: Transocean Personnel Transocean Project Transocean Specialist Ship Crew The list of attendees is prepared and updated at all time by trial Administrator. POB is not to exceed maximum allowed POB for the Rig. The Final Numbers of Representatives of Owner, Vendor, Class and Builder are decided by Project Manager and updated with Trial Administrator. 3 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Organization SCM Shipyard Pvt Ltd (SCM) Owner of the vessel and overall operating authority. SCM is in command of the vessel until official handover to Transocean. (See attached Organization Chart Figure 2) Figure 2 Transocean Buyer. Official observer during the Sea Trials. Det Norske Veritas (DNVGL) is the Certifying authority. ABB is the vendor of the Main Switchboards & Electrical Generation alternators; Representatives will be on board throughout the trials period. Kongsberg (KM) is the vendor of the IAS & controls system, DP system, Navigation system, hardware, and software Engineers will attend throughout the trials period. Rolls Royce is the vendor of the Thrusters and Thrusters control systems and will have representatives in attendance during Performance Test of the trials period. They will be equipped with all necessary diagnostic tools to analyze system status if required. 4 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Caterpillar is the vendor of the Main Engines for the Generators and will have representatives on board during the performance testing. They will equip with all necessary diagnostic & programming tools to analyze and remedy problem with EDG & MDG control including the actuator controller if required. Jason Electronic is the vendor of Communication Equipment and will provide Engineers for final commissioning of the Communication Equipment and systems during the Performance Trials. Sondex is the vendor for Fresh Water Generation Equipment and will provide an Engineer to Commission the Fresh Water Generators during Ship Performance Trials Fire Fighting, emergency and helicopter operations support crew is provided by Buyer. Authorities Project Manager is in overall charge of the vessel assisted by SCM Master. Two navigating officers will assist him throughout the trials. The Bridge Organization is in accordance with the MPA regulations and the ICS Bridge Procedures Guide. Sea Trial Manager is responsible for the conduct of the Sea Trials and the completion of the Sea Trials program. He shall liaise with the SCM Master, Project Manager, and Commissioning Manager & Buyer in relation to the movement and positioning of the vessel to allow the various tests to be carried out. SCM Commissioning Manager is responsible for the organization of the various commissioning teams who will carry out the tests and trials and for the conduct of the trials and recording of the trial results. Trials Administrator is responsible for ensuring that all joining marine personnel are signed on ships articles and that the record of all joining and departing personnel is kept up to date. All other personnel shall be considered as supernumeraries. Daily updates of persons on board will be sent to SCM Personnel Department to satisfy the requirements of the MPA & the SAR (Search and Rescue) requirements. He will also provide a planning and general administration role during the trials. A certified Chief Engineer is responsible for watch keeping in the Machinery Spaces. During the initial phase of the trials, Technicians will assist them in the running of such machinery. The presence of the Trials Manager and / or Commissioning Manager during any Tests or Trials does not relieve this Engineer of his watch keeping responsibilities. A SCM Naval Architect to monitor loading conditions throughout the course of the trials and assist, where appropriate, in the conduct and recording of vessel performance tests. Transocean Project Team - Roles & Responsibilities The roles and responsibilities of Transocean Project Team key personnel are shown below: Transocean Project Manager 5 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT The Transocean Project Manager is responsible for administering the SCM contract and for the delivery of the rig. The Project Manager approves the tests and trials for the vessel, based on the recommendations of the Transocean Commissioning Manager. Transocean Commissioning Manager The Transocean Commissioning Manager is responsible for reviewing, witness and approving all SCM tests and trials. Transocean Offshore Installation Manager (OIM) The OIM is responsible for the safe and efficient operation of the West Rigel and for the direction, control and leadership of the vessel crew. In the construction period leading up to the delivery of the vessel from SCM, the OIM also has a line responsibility to assist the Transocean Project Manager and the Commissioning Manager, as required, in the delivery of the vessel and in the review, development and execution of the tests and trials. SAFETY SCM PROJECT Manager is to make decisions on Safety and Pollution avoidance and will request assistance from SCM Master, as required, SCM will ensure that: 1. The Master is properly qualified for command. 2. Fully conversant with the SCM Shipyard Safety Procedures and Emergency Response Plan. 3. Given the necessary support so that the Master’s duties can be performed safely. 4. Suitably qualified and certified personnel for vessel operations man the vessel. Where required the SCM Permit to Work system & the SCM commissioning supplement will be used to ensure risk assessments are undertaken for any tasks outside the normal Ships Operations. Prior to Sea Trials all attendees are required to fill in a form giving personal details such as next of kin and declaring any medical problems requiring special treatment or medication. In exceptional circumstances, some persons may be prevented from attending the sea trials. This form will also make it clear that no alcohol & / or illegal drugs are permitted on board the vessel and that possession & use of alcohol & / or illegal drugs will merit instant dismissal. On boarding the vessel, each person are given a boarding card showing their Muster Station, advice on medical facilities on board in the event of an accident or injury, lifeboat position and general safety requirements and advice. Prior to departure, a safety message will be broadcast on the PA system to all areas. Reactivation Trial: 1. 2. 3. 4. 5. VESSEL MANOEUVERING TRIAL E0 TEST DYNAMICS POSITIONING (DP) COMISSIONING DP FMECA PROVING TRIAL BALLAST TRIAL The details activities explanation will be provided later in this report. 6 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Observations: 1. Overview of rig: The rig was initially named as West Rigel for the client Sea Drill. Later for the Buyer (Transocean) It was renamed as Transocean Norge. Principle particulars and the other information of the rig is as follows. Figure3. Basic Information of Rig. (Source: https://www.seadrill.com/) 1. Arrival at site Since POB (Person On Board) was fixed, some personnel need to get off the rig in order to bring others onboard. A supply Boat was standby for escorting personnel to and from shore to RIG. The transfer of personnel from supply boat to Rig was done by FROG (Personnel Transfer devise). 7 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Figure4. Crew Transfer by FROG Equipment using Starboard Crane. 2. Safety briefing Upon arrival to the site its mandatory to have the safety briefing is done to get the crew familiar with safety instructions, Emergency Escape routes, mustering points in case of fire. I case of Fire, upon captains warning if Crew has to abandon the rig, fire alarm will be sound for more than 3 times. All crew has to rush towards Fire Mustering Point. A pre assigned fire wardens will make head counts for respective lifeboats prior to evacuation. A fire drill is conducted to aware the crew regarding the procedure. The instruction in case of MOB (Man Overboard) is shout out Man overboard at least three times. Through the nearest life buoy and not to leave the site of person till the rescue team arrives. Above mentioned are some of primary safety instructions. 3. Allocation of accommodation Upon finishing the safety briefing crew will be given preassigned rooms. 4. Reporting to manager Once settled, crew is asked to report to the Sea Trial manager. The manager brief about the ongoing activities and assigns the tasks as per qualifications and experience. 8 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT 5. Activities: 1. Ballast Trial The purpose of ballast trial is to demonstrate that the ballast system is capable of bringing the rig from Condition1: Ballasting from transit draft of 11.1 meter to survival draft of 21.5m. After that, continue ballasting to 23.5 m draft. Condition 2: De ballasting from Operation draft of 23.5 m to Extreme survival draft 19.5m. Detailed procedure of this activity is provided in the document: Reactivation trial Procedure Section 6.3. Data to be recorded: During ballast system trial, all data will be recorded at Start, Finish and at 15 minit intervals by Kongsberg Maritime’s VMS system so as to provide essential information for future operation purposes. Minimum data required to be recorded included: All tank levels – Main & backups All Tanks Volumes-Main & Backups Rig Drafts Time for Trail Start Time for trial finish. Figure 4 Shows the VMS system showing the ballast tanks control system. 9 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT A lead naval architecture will prepare the ballasting / De ballasting plan and corresponding loading conditions and tank capacities plan. Challenges faced: The Difficulties which are most likely to occur during Ballast trials is, unable to open or close the inlet / outlet valves from signals from Bridge. In such circumstances crew in charge has to go to the pump rooms to manually activate the valves. Another Challenge faced during ballast trial is error in Draft monitoring. The Draft reading shown by VMS is sometimes prone to Error due to various reasons which may leads to overfilling the tank. Hence the reading taken by VMS should always be compared with manual reading to avoid errors. The draft readings can also be verified using the cameras fitted at different locations. 2. Maneuvering Trial: For a new built vessel, the complete maneuvering trial consists of various activities viz. Turning Circle Zigzag maneuver Spiral maneuver Pull out test Stopping test Man overboard test Since the maneuvering trial was successfully completed in year 2015, only certain tests were carried out as part of Reactivation trial which included: Steering trail Purpose of steering trail is to demonstrate control of the vessel, with and without joystick control. Steering trials are to be conducted when vessel is at transit draft. Hence these were carried out during the vessel’s voyage return from the trial location. Trial is carried out in following conditions: Use AFT thruster 100% and FWD thruster for steering 10 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Figure5 Shows the Steering Trial with Aft Thruster for Propulsion Forward Thrusters for maneuvering. (Port 35 Degrees) Figure6 Shows the Steering Trial with Aft Thruster for Propulsion Forward Thrusters for maneuvering. (STBD 35 Degrees) 11 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Use FWD thruster 100% and AFT thruster for steering Figure 7 shows the typical record for Steering trial. Emergency stop from Ahead Purpose of this trial is to demonstrate the vessel’s stopping capabilities in event of emergency Detailed procedure of this trial is given in the Reactivation sea trial procedure. The Minimum points to record during the test are as follows: I. Coordinates of vessel at order “full astern” II. Base course III. Time at start of maneuver IV. Thruster output V. Time for vessel to stop VI. Vessel’s heading throughout the maneuver VII. Relative wind speed and direction VIII. Water depth & sea condition IX. Vessel draft FWD and Aft X. Coordinates of vessel when forward movement is ceased 12 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Figure 8 Shows the Emergency Stop trial with full FWD speed before ‘Full Astern’ order. Figure9 Shows the Emergency Stop trial with thruster Rotated 1800 on ‘Full Astern’ order. 13 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Figure 10 shows the typical record for Emergency stop trial. 3. E0 Test: Purpose of the E0 test is to check the endurance of propulsion system and Remote control system E0 test requirement: Engines: 8 X Engines running at 75% of load Thrusters: 8 X thrusters running at 90% load Total duration: 6 hours (including maneuvering test). Remote control system: The purpose is to test the remote control system at sea to demonstrate stable and controlled operation of the propulsion system with it necessary auxiliaries over the full operating range., and regardless of the type of propulsion. It shall be demonstrated that all necessary ramping/controller functions are implemented to ensure that any operation of maneuvering levers do not cause shut down, instability or damage to the propulsion machinery or power generating units. 14 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Maneuver test This test includes the following: From stop to dead slow ahead. Proceed to dead slow ahead. Before each step increase , the rpm of the previous setting shall have reached its steady state condition. From approx. 2/3 of full speed ahead, go quickly to half astern. Proceed stepwise to full astern. Stop After approx. 5min. stop, start ahead When the ship has reached approx. 2/3 of full speed ahead, go quickly to half astern. When ship is ’dead in water ‘, go quickly to full ahead when the ship has reached approximately 2/3 of full speed ahead, go quickly to dead slow ahead When the rpm is nearly stabilized, go quickly to full ahead. When the ship has reached approximately half speed ahead, go to stop and back to dead slow ahead within 1 second Following is the check list to be completed before starting the E0 test. Satisfactory 1 All the alarms of propulsion system and auxiliary machinery to be tested. 2 Automatic shutdown of main engine to be tested 3 Local control of the propulsion machinery to be tested. 4 Automatic start of all essential standby pumps 5 Fire detection alarm system to be tested 6 Alarm monitoring system at wheel house, public spaces and engineer’s accommodation to be tested 7 Effective control of propulsion machinery from navigation bridge to be confirmed 8 Standby start of power generators to be confirmed 9 Ensure all standby machinery are put on standby mode Table 1 Unsatisfactory 15 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Figure 11 shows the reference speed plot for E0 test. 4. DP Commissioning (CAT): Purpose of this test is to confirm that dynamics positioning system of Rig is in working condition and meets the positioning requirements and standards. The purpose of CAT (Customer Acceptance Test is to verify that the DP/PM system delivered by Kongsberg Maritime As is according to customer requirements stated in contract and according to classification society requirements when applicable. The results from the tests shall be recorded by hand in the INSPECTION AND TEST RECORDS of the COC. Any remarks to the product or test results can be made on the ITEM DISPOSITION SHEET of the COC. All COC-pages shall be signed as applicable, and the customer representative shall sign the front page of the COC at completion of the CAT. DP & IAS system to be commissioned according to procedure developed by Kongsberg. This test contains the following activities. These activities are witnessed by owner and class for approval. 1 UPS Start Up (a) General UPS No 1 Power ON (b) General UPS No 2 Power ON (c) General UPS No 3 Power ON (d) Thruster UPS No 2 Power ON (e) Thruster UPS No 7 Power ON (f) K-Pos backup UPS Power ON 16 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT (2) System Star Up (a) Deck stop OS 1 Power ON (b) Deck stop OS 1 Lamp Test (c) Deck stop OS 2 Power ON (d) Deck stop OS 2 Lamp Test (e) Deck stop OS 3 (Simulator) Power ON (f) Deck stop OS 3 (Simulator) Lamp Test (g) Deck stop OS 4 (K-Thrust) Power ON (h) Deck stop OS 4 (K-Thrust) Lamp Test (i) Deck stop OS 7 (RMS) Power ON (j) Cabinet DPC-3 Power ON (k) General UPS No1 Redundancy test (l) General UPS No1 Battery test (m) General UPS No2 Redundancy test (n) General UPS No 2 Battery test (o) General UPS No 3 Redundancy test (p) General UPS No3 Battery test (q) Thruster UPS NO 2 Redundancy Test (r) Thruster UPS NO 2 Battery Test (s) Thruster UPS NO 7 Redundancy Test (t) Thruster UPS NO 7 Battery Test (u) K-Pos Backup UPS NO 2 Redundancy Test (v) K-Pos Backup UPS NO 2 Battery Test (3) General Verification (4) System Function (a) Heading Control (b) Joystick mode test (c) Rotation Center (Joystick Maneuvering) (5) Auto Control Test (a) Reference system interrupt test (b) Environmental sensor Redundancy Test (c) Draught Test (d) Position and Heading test (e) Position keeping without Pos. Ref. Data (f) Operation with reference system in combination (g) Thruster redundancy test (h) Rotation test (i) Rotation center (Auto Position) (j) Positioning Using Green Control (6) Thruster Allocation (a) Test of power Optimal Allocation 17 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT (7) Position Reference System (a) Position Accuracy Along Ship using HiPAP 1 (b) Position Accuracy Athwart ship Ship using HiPAP 1 (c) Position Accuracy Along Ship using HiPAP2 (d) Position Accuracy Athwart ship using HiPAP 2 (e) Position Accuracy Along Ship using GPS 1 (f) Position Accuracy Athwart ship using GPS1 (g) Position Accuracy Along Ship using GPS 2 (h) Position Accuracy Athwart ship using GPS 2 (i) Position Accuracy Along Ship using GPS 3 (j) Position Accuracy Athwart ship using GPS 3 (k) Position Accuracy Along Ship using Taut Wire 1 (l) Position Accuracy Athwart ship using Taut Wire 2 (8) Autopilot Test (a) Auto Pilot General test (b) Joystick to autopilot mode change over (c) Change Heading (d) Heading Stability (e) Course Limit (f) Steering thruster Azimuth Limits (g) Gyro Selection and monitoring (9) Load Monitoring and Bloackout Prevention (10)System Test (a) Computer Redundancy test (b) DP capability analysis (c) DP Consequences analysis (11)Monitoring Functions (a) Monitoring of Backup system (b) Selection of monitor backup (c) Setting up the backup system from a Main IS (d) Backup control from main OS (12)History station (a) History Recorder (b) History Review (13)Endurance test (14)General test Above mentions tests are carried out continuously and in conjunction with other trials. The Main Objective of DP Commissioning is to confirm the operation ability of each system component in DP. The Retailed Report Containing all the results and findings of DP commissioning are to be submitted to Class and Owner for approval. 18 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT 5. DP FMECA: The purpose of this test is to perform failure mode effect and criticality analysis of the dynamics positioning system. Overall idea of this test is to check if DP system can work undisrupted if one or more components in a system are failed. Because of complete failure of DG#7, the FMECA test was canceled and all parties agreed to re conduct the FMECA test once the DG#7 is online Documentation: Following are the mandatory documents and need to be prepared by yard during and after Sea trial and need to submit to owner and class for approval. 1. 2. 3. 4. Testing 1 2 3 4 5 6 7 Sea Trial Program and Protocol Sea Trial Procedure DP FMEA test Program Sea trial Report. This Document provides the records and reports obtained during the offshore sea trial Below are the typical Record for the Steering Trial. Description Procedure Number - Agreed & Approved by Reference/Remark Owner Builder Class Vendor Abandon Ship Drill Ballast Trial DP CAT E0 Test BoP Commissioning DP FMEA Maneuvering Trial Table 2 Shows a Typical Sea Trial Acceptance Form . This form need to be duly signed by all mentioned parties for each trial activity. Remarks if any need to rectify by the builder in order of acceptance of the document. Once the sea trial is over, builder is responsible for the detailed report submission for the owners and class approval. All the trial reading duly witnessed by class and owner shall be compiled and submitted for the approval. Prior to sea trial a complete sea trial procedure need to be prepared and to be submitted for class and owners review. Procedure shall be revised according to owners/ class comments and followed during trial. 19 TRANSOCEAN NORGE – RE ACTIVATION TRIAL_ ACTIVITY REPORT Conclusion: In summary of Sea trial Observations/Activity Report, following points are mentioned. It is Utmost necessary to have overall knowledge of the ship structure. Personnel in charge should be having enough experience and knowledge in the scope assigned. Ability to work in 12 hours shifts of more is necessary since most of the operations are continuous beyond the shift timings. All personnel should have the bird eye view towards all activities going on during Sea trial. This is necessary because at certain instances some testing can be carried out at the same time when other testing is going on. Having set the Objective as Learning and Exposer, I feel myself that I have accomplished the motive of Participation (Passive) in Sea Trial program. The overall Philosophy of the Trail is understood and the knowledge of certain trials (falling under naval Architectural scope) has gained in order to take the direct responsibilities in future projects. Acknowledgement: I would like to thanks my Department Manager Mr. Vijay, Section Manager Mr. WZM, and Team Lead Mr. See Chee Wei for providing me the opportunity for this exposure. I would also like to thank Sea Trial manager Mr. Solomon, Project Manager Mr CP for providing all the arrangement support and information during the period of Sea Trial. 20
