Atwood Offshore Drilling Ltd Safety Always
VICKSBURG RIG MOVE GUIDELINES AND PROCEDURES RIGMOVE # 129
From Coastal Energy - Songkhla-G (Thailand) To Coastal Energy - Songkhla D (Thailand) April 2011 DOCUMENT ISSUE RECORD Rev. 1
Date
Status
Author
th
Review
Atwood
Atwood
P. Roedgaard
Tony
19 April 2012
Signature
Approved
Wilson
1
Signature
TABLE OF CONTENTS SUBJECT 1. INTRODUCTION 2. PERSONNEL RESPONSIBILITIES 3. PREAMBLE 4. PRE-MOVE PREPARATION 5. SUMMARY OF PLANNED ACTIVITY 6. DEPARTURE FROM SONGKHLA-E, LEG PULLING OPS, TOW ROUTE 7. ARRIVAL, POSITIONING, PRELOADING AT SONGKHLA-G 8. TOWING READINESS 9. TOWING SAFETY 10. WEATHER AND OPERATIONAL LIMITS 11. TOW BRIDLE CONNECTION & DISCONNECTION 12. SUPPORT 13. EMERGENCY CONTACT NUMBERS / ROUTINE COMMUNICATION 14. MEDIVAC PROCEDURES 15. MINIMUM MANNING CONSIDERATIONS
1.0
INTRODUCTION 1.1 The procedures contained within this document are designed to propose a suitable methodology for the departure of Vicksburg from Songkhla-G and intended tow route to Songkhla-D in Thailand. The procedures have been developed and approved by Atwood and Coastal Energy Management. 1.2 These procedures assume the following:-
The reported water depth at Songkhla-G is: 56.4 ft 2
Three anchor-handling vessels (AHV’S) will be utilized to move off the Songkhla-G location.
AHV’S will be manned to allow 16 hours continuous operation in all respects. 1.4 Three AHV’s will proceed to the Songkhla-G location for utilization. 1.5 The details within this document are guidelines for the planning, preparation and implementation of procedures associated with this particular VICKSBURG rig move. For all issues associated with the move, all decisions and actions shall adhere to Atwood accepted methodology and prudent marine practices. 2.0
PERSONNEL RESPONSIBILITIES
The following descriptions of responsibility refer to the key personnel who will be involved in the ‘VICKSBURG’ rig move from Songkhla-G location to Songkhla-D. 2.1
THE ‘VICKSBURG’ OIM
Will have total responsibility for the safety of the rig and personnel at all times, as per statutory requirements, and will decide when it is safe and practicable to commence operations within the limitation of the units’ Operations Manual, having consulted with the Warranty Surveyor.
The ‘VICKSBURG’ BARGE MASTER will be responsible for the conduct and safe operation during the moving off / jacking operations at Songkhla-G and positioning operations at Songkhla-D Will ensure the correct placement of competent Atwood personnel to ensure the safe deployment, handling of vessel tow gear and leg jacking operations. Will ensure the correct placement of competent Atwood personnel to ensure the safe deployment, handling of vessel tow gear and leg jacking operations. Will be responsible for the conduct and safety of the tow and will give instructions to the towing vessels with regard to tow-wire deployment, passage planning, courses and speeds after consultation with the Vessel Masters.
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Will ensure the stability of the rig at all times, including making any required adjustments to trim or heel, as necessary. Will ensure that all relevant authorities are kept informed by e-mail of the rig move status. Will ensure that a pre-rig move safety meeting is held onboard prior to commencement of the tow.
2.2
THE COASTAL ENERGY DRILLING SUPERVISOR
A Coastal Energy drilling supervisor will be onboard the rig for the tow from Songkhla-G to the Songkhla-DJ. The Vicksburg will be responsible for figures for rig and tow boat vessel consumables at relevant times required by Coastal Energy and document on the Vicksburg IADC.
2.3
RIG POSITIONING SURVEYORS
Will be required for the tow, also a monitor will be required in the Control room, under the cantilever, the main tow boat and AHV’s and equipment must be operational. 2.4
RIG MOVE VESSEL MASTERS
Will be responsible for the safety of their vessels and for the safety of the tow. Will be responsible for ensuring that all towing operations are conducted in a safe manner with due regard to safe working practices and the practices of good seamanship. Will ensure that all crews are familiar with and towing operation. Will use the JSA as a tool for incident prevention and ensuring that all hazards have been identified and communicated to the crew prior to each marine operation. Will ensure that 'Clear Deck' Policy is adhered to during operations.
2.5
WARRANTY SURVEYOR
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Shall confirm sea-fastenings prior to jacking into the water and watertight integrity prior to putting the unit afloat. He will check stability information and confirm the unit has sufficient reserves to complete the move. He will issue a certificate of approval for the rig move and approve all towing vessels. He will confirm weather forecast conditions meet with procedural criteria prior to beginning the rig move and keep a detailed log of events. He will be available to discuss and advise on all aspects of the rig move with the Barge Master & OIM, if required. He will ensure that all the Braemar Falconers recommendation and requirements have been met prior to departing the Songkhla-G location and that all operations are in accordance with Atwood policies and procedures including compliance with the Operations Manual.”
2.6
RIG MOVER (BARGE MASTER)
The Rig Mover shall be responsible for the towing and positioning operations, otherwise this responsibility will revert to the O.I.M. Will be responsible for the conduct and safety of the tow and will give instructions to the towing vessels with regard to tow-wire deployment, courses and speeds in consultation with the Vessel Masters. Will be responsible for the departure and approach from/ into the respective location and soft pinning of the legs. Will conduct pre-job safety meetings before the commencement of jacking down, jacking up, pulling off, pulling into location and mooring operation detailing the work that is to be carried out for the day. The Rig Mover shall be responsible for the towing and positioning operation, otherwise these responsibilities will revert to the OIM. The designated rig mover for this move shall be – Barge Master Poul J. Roedgaard
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For this move, a "pre-move" meeting will be conducted onboard the VICKSBURG in a timely manner to clarify details and establish responsibilities with the following attendees. O.I.M. Rig crew with key responsibilities Warranty Surveyor Tow Vessel Captains 3.0
PREAMBLE
3.1 The purpose of this document is to ensure that the 'VICKSBURG' departure, and approach to the location are conducted in a safe and efficient manner. 3.2 The safety of Personnel, Rig, Equipment and ATWOOD / COASTAL ENERGY assets is of paramount importance and all parties involved in the operation will comply fully with all safety procedures in place. 3.3 These approved procedures shall be followed as closely as circumstances permit, having due regard for the limitations of the unit and its assisting vessels. Should any deviations be necessary, the COASTAL ENERGY Superintendent / OIM and Barge Master will be advised immediately. They shall initiate the Management of Change Process (M.O.C.) and get the necessary approvals. 3.4 Due considerations must be given to any, and all, effects of such a deviation. 3.5 Prior to the commencement of jacking hull into water, leg freeing, pull off from location, anchor deployment, pinning of legs, preloading and anchor recovery operations, weather forecasts shall be obtained which show the operation can be safely completed without interruption.. 3.6 All rig move vessels will be issued with a copy of this rig move procedure prior to departure from Songkhla-G. Vessel Masters will be required to review the procedure and comment accordingly.
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3.7 Prior to commencement of operations, the 'VICKSBURG' Barge Master and the Masters of the AHVs are to confirm that all mechanical equipment and fittings to be utilized in the pull off and move on operation are operable. 3.8 All key personnel shall be fully briefed by the VICKSBURG Barge Master prior to the commencement of operations, to ensure a full understanding of these procedures. Key personnel shall include Atwood ToolPusher, Rig Mover, Warranty Surveyor, Winch Operators and Vessel Masters.
4.0
PRE-MOVE PREPARATION
4.1 Pre-move preparations will be made which includes the following as a minimum: All non-essential personnel to be taken off the rig Rig move checklist detailing pre-move tasks completed by designated parties and approved by the Barge Master prior to jacking down. Stability calculations completed and approved by the Barge Master Watertight Integrity/ Openings Requiring Closure for unit to be watertight, all hatches/doors, vents, confirmed watertight. The compartmentalization and watertight integrity compliance, with specific mention of the closures involved, is addressed in the Operations Manual. Sea-fastenings/tie-down made in accordance with good Marine practice and Atwood Offshore standards. The sea-fastenings will be approved by the O.I.M. and Warranty Surveyor prior to jacking down. Safety Equipment will be re-verified to be in good condition 12 hours prior to the rig move. 4.2 Towing Vessels Moving off SONGKHLA-G Vessels Lead Tug:
Hawk K
Second Tug:
Crest Ruby
Third Tug:
TBN
All tugs to be provided by COASTAL ENERGY Note: Atwood tow vessel requirements are – For Ocean Tow an approved tow vessel of minimum 120T bollard pull. For field move two approved tow vessel of minimum 70T bollard pull. For stern positioning approved tow vessels of minimum 45t bollard pull.
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All Tow Vessels are subject to approval by Atwood elected insurance surveyor.
4.22 The tugs contracted by Coastal Energy must have permission to enter 500m and connect to the Vicksburg for the duration of move off and tow operations. .23 The details for this move will be presented at the pre-move meeting and will cover the following points: Weather parameters for location departure Weather Criteria (From Vicksburg MOM Section, 16.16) a. The rig’s hull should never enter the water or exit the water unless waves are less than three (3) feet in height for hard bottom and five (5) feet in height for soft bottom.
Weather window for expected duration of the rig move jacking operations Weather window of a minimum 72 hours will be required to do and complete the move, jacking, stomping and preload operations Lines of communication Tow route Safe shelters available along the tow route: None. Soft Pin Positions Piracy prevention measures to be taken and followed during the tow (24 hour watch and other measures, as considered necessary.) 4.3
Procedures Undertow
4.31 All operating criteria and guidance for stability and watertight integrity contained in the VICKSBURG Operation Manual will be complied with. 4.32 During the tow, routine checks for watertight integrity /tank soundings / draft marks/ towing gear condition / sea-fastenings as instructed by the Barge Master. will be made and recorded. 4.33 Rig motion recorded and position reports can be obtained from the towing vessel, as available to the rig. 4.34 Safe shelters (Thailand) There are no safe shelters available along the tow route 4.35 Piracy prevention measures to be taken and followed during the tow (24 hour watch) and other measures as considered necessary will be set out.
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5.0 SUMMARY OF PLANNED ACTIVITIES 5.1 The VICKSBURG will be demobilized from Songkhla-G after the completion scheduled work activities. 5.2 The lead tug Hawk K will be secured to the bow lead and the remaining boats to the port/stbd aft as designated by the rig mover. 5.3 When pre-move preparations are complete the rig will jack down into the water and attempt to pull legs, if no go then jetting legs will commence until free. 5.4 The rig will jack down to draught. Legs will be raised to towing position. Watertight integrity of the hull shall be checked by the rig personnel and warranty surveyor. Water Tower must be raised to full height also utilizing extension hoses. Jetting 5.5 After confirmation of w/t integrity from warranty surveyor, the rig will jack to 1-2 foot below floating draft and begin leg pulling operations. The legs will be jetted, if the legs do not pull free immediately. Bow leg will be freed first, then Starboard, Port leg last. 5.6 Upon completion of the leg pulling operations once the legs are free and clear of sea bed, the rig will once clear of platform gradually turn to port to go on a northerly heading ensure that passage will be minimum 500 meters east of Songhkla–C thereafter tow across to Songkhla-D soft pin position location. Final waypoints to be made up once the position surveyors comes onboard 5.7 Once the rig is positioned it will be soft pinned 100m of Songhkla-D and anchors run. Stomping 5.8 Procedure to follow 6.0 6.1
DEPARTURE FROM SONGKHLA-G Location Details Lat; 07º 26’06” N Long; 100º 36’25” E
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Water Depth: 56.4 ft Vicksburg position heading 90.8 Leg penetrations: Bow: 35.0 ft
Port: 35.0 ft
Stbd: 35.0ft
6.2
Pull off from Songkhla-G
6.3
The rig will be slowly moved away from the location as the spud can tips clear the bottom. The initial pull by the tow boats and tugs shall be as directed by the rig mover.
6.4
Tow Passage
The tow passage will be altered to avoid the fisherman’s nets, all necessary steps and precautions will be taken to minimize any possible property damage whilst also ensuring the safety of all vessels and structures in the area. 6.41 The move from Songkhla-G will be in accordance with these guidelines and details established in the pre-move meeting. Consumable quantities will be recorded for the rig and tugs; this will be logged in IADC report. 6.42 Warranty Surveyor will prior to the move provide approval for the tow. Acceptable weather conditions must be present to commence the tow and weather forecasts will be received at a minimum of 72 hrs prior to jacking down with a 5 day outlook. 6.43 The passage from Songkhla-G to Songkhla-D shall be conducted with Haw K lead tug (Connected to the VICKSBURG main towing wire). Assisted by another two nominated tow vessels Crest Ruby and TBN connected to the quarters 6.44 The tow distance from Songkhla-G to Songkhla-D is 5.0 nautical miles. The duration of tow shall be 3 hours at an anticipated tow speed of 1.7 knots. 6.45 The proposed tow route shall ensure that a maximum clearance is maintained from any obstacles or structures. The tow vessels shall be provided with a copy of the intended tow route and move procedure.
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6.46 The Rig Mover shall discuss the procedures and plans with each boat Captain(s) and shall include the following as a minimum: Communications during towing operations. Proposed tow route Weather criteria and forecast information Navigation procedures Sufficient navigation equipment and updated charts Facilities and capabilities of tow vessels Towing arrangements. Contingency plans and emergency procedures
6.48 Notification shall be transmitted to Coastal Energy, Atwood and the Helicopter Operators at the following times: Departure from Songkhla-G If any problems or delays are encountered in route while in Thai territorial waters. Arrival at Songkhla-D Other appropriate authorities shall also be notified of VICKSBURG move progress, as required. 6.49 It must be ensured that all rig and vessel anchors are racked and double secured. The tow line length shall be adjusted by the respective vessels accordingly; take into account towing wire centenary and water depth. The BA charts used must be corrected to the latest Notices to Mariners. All vessels shall exhibit the appropriate shapes and lights as required by the Rules of the Road. 6.50
Tow Route Below is the proposed tow route of the Vicksburg from Songkhla-G to Songkhla-D, Thailand. TAS Helicopters requires this to determine the extent of chopper 11
requirement in the event of Medivac in Thai waters. TAS Helicopters will provide emergency cover in Thailand. This will then be communicated to relevant authorities. The proposed tow route way points and coordinates Description
Latitude
Longitude
Songkhla-G
07º 26’06” N
100º 36’25” E
Songhkla D
07˚31’0” N
100˚ 36’45” E
Course
Distance
002˚
5.0 NM
7.0
Arrival at Songkhla-D This will be about 100m off final location at the rig mover’s discretion
7.1
Final Location Details Lat; 07º 30’ 59.6” N Long; 100º 36’ 45” E Water Depth: 17.8 Mtr / 58.4 Ft ref. Braemar Falconer Vicksburg to be positioned heading 90 The weather forecasts shall be used to assist in deciding course of action
7.3
Positioning Positioning will take place by using four anchors and tug assistance The rig will soft pin 100m off Songhkla-D platform at the rig mover’s discretion enabling anchors to be run and connected, by AHV’s. Once anchors deployed and holding stomping will commence Rig will move onto final position in daylight hours only Rig must give Coastal Energy 12 hrs notice to enable them to shut in production.
7.4
Preload Sequence and holding time will be decided when stomping has been completed. Awaiting stomping procedures 12
8.0
Anchoring Operations Two AHV’s will be utilized at Songhkla-D soft pin location; anchors will be run as per the anchor spread diagram. Port fwd anchor 040˚c/w 300 mtr wire Stbd Fwd anchor 140˚ c/w 300 mtr wire Stbd aft anchor 220˚ c/w 450 mtr wire Port aft anchor 303˚ c/w 300 mtr wire and also 50 mtr of 70mm chain and one piggy back anchor.
8.1
Clear Deck Policy
8.11
"Clear Deck" Policy MUST be fully discussed and understood on VICKSBURG and the designated AHVs.
8.12
Winch operators must understand that the load path is clear of personnel prior to lowering and heaving in of any wires.
8.13
Deck crew handling wire must understand to keep away from the wire paths whenever wire or chain is under tension. Essential personnel needed on deck must be within safe haven during operations.
8.2
Communication
8.21 Establish direct VHF radio communication on designated frequency/ channel to link VICKSBURG to all its support vessels. 8.22 Support Vessels are to ensure that they have direct radio communication between bridge and deck operations. We will work on channel 72. In case of loss of communications we will fall back to channel 9, the field channel. Also contact Phone, fax and email numbers of the tow vessels will be given to the Vicksburg and Coastal Energy offices before departing Songkhla-G location. 8.23 Communications will be done using the English language.
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8.3
Tow Vessel Readiness
8.31 Tow vessel are to have a sufficient fuel on board for a minimum of 14 days tow passage at 100% power plus consumables and provisions. 8.32 All towing, anchor handling wires and ancillaries must be certified by class and maintenance log of same shall be updated and be readily available for inspection prior to usage. 8.33 Towing trim and draught is to be suitable for anticipated weather. 8.4
Jack-Up Readiness
8.41 Towing winches and all associated equipment and instruments are verified functional. 8.42 API RP 21 Inspection of Mooring Equipment performed. 8.5 Survey Spread Will be required for the tow, also a monitor will be required in the Control room, the main tow boat and AHV’s and equipment must be operational.
8.6
Weather Forecast
8.61 Weather forecasts for this move will be obtained on a two times / day arranged by Atwood. Weather reports will provide the following information as a minimum and meet the following reporting criteria: Early warning of typhoon development, then continuous monitoring / updates and actual and predicted tracks. Wind speed and direction. Wave height, period and direction Current speed and direction Confidence of the forecast, (high, medium, low) The information for waves should include the wind, wave and swell components, as well as the maximum combined sea.
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Both site and route specific forecasts. Transmissions direct to the rig twice each 24 hours. Each forecast to provide 3 day advance cover. Immediate updates provided in the event of significant change in the forecast. 8.62 Receipt of the first forecast will be 48 hours prior to move commencement. 9.0
TOWING SAFETY
SAFETY IS COASTAL ENERGY AND ATWOODS NO.1 PRIORITY 9.1 Atwood & Coastal Energy expects that the pull off operations of the VICKSBURG from Songkhla-G and the tow to Songkhla-D is carried out in a safe and efficient manner. 9.2 Job Safety Analysis (JSA) shall be carried out by the Master of each AHV before the start of the positioning operations. 9.3 Daily Safety Meeting shall be held and the Master of each support vessel shall brief his crew on all aspects of the work to be carried out. 9.4 Work Vests and personal safety equipment must be worn at all times when working on deck. 9.5 Inspect tools and buoy catchers, test shark jaws/ kamforks, anchor handling winch, tugger winches and capstans before commencing on operations. OIM / RIG MOVER shall be kept informed of the status of equipment. Any malfunction shall be reported immediately to the OIM / Rig Mover who will then advise all key personnel offshore. 9.6 Test communication system between the bridge, tow winch operator, rig mover and the deck crew. 9.7 Pelican hooks shall not be used at any time during the operations. 9.8 Deck Crew shall stand clear of wires under tension and shall not be on the aft deck during winch operations. This shall be in accordance with 'Clear Deck Policy' as described in Section 8.1 9.9 Periodic (hourly) safety messages must be transmitted via all available means by the lead tug warning traffic in the vicinity of the status of tow. 9.10 Working hours and rest periods onboard the towing vessels should be in compliance with the STCW Convention (STCW95) and ILO Convention No. 180.
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10.0 Final Positioning on Songkhla-D Final positioning of the rig will be carried out after stomping operations are complete, refer attached procedure
11.
TOW BRIDLE CONNECTION & DISCONNECTION
11.1 The tow bridle connection to the two tugs shall be made when directed by the rig mover. 11.2 Tow Line Connections at Songkhla-G 11.21 The designated lead tug Hawk K shall back up to the bow of the rig and take position under the helideck of the rig. 11.22 The eye of the tow wire shall be lowered by rig’s tugger winch until the tow stringer is received and hauled in by the Hawk K. The tow wire will then be secured on mechanical securing device. 11.23 Tow line connection shall then proceed with the stringer being secured by 100T shackle to tow wire of Lead Tug. 11.24 The tug shall then pay out tow wire and adjust length for effective pull of rig when legs are freed. 11.25 Second and third tugs will be connected to the port and stbd aft side of the rig by aft tow wires. 11.26 The lead tug shall then pay out tow wire and adjust length for effective pull of rig when legs are freed. 11.3 Tow Line Disconnection at Songkhla-D 11.31 The main tow line shall be shortened until the stinger is secured on the mechanical securing device. The Lead Tug shall manoeuvre itself until the stern is under the helideck whilst spooling in tow wire. 11.32 After the stinger has been disconnected, the weight on the air tugger wire connected to the delta plate shall be taken up by the rig whilst the stinger remains secured on mechanical securing device. 11.33 The stinger shall be released from the mechanical securing device of the tug ONLY after receiving instructions from the rig mover. 11.34 The tugs on the quarters wire will come close to the side and within reach of cranes. 11.35 The crane will bring down a pennant wire, which will be connected to the socket of the tow wire when it is locked on the kamfork. When the crane is connected the tow line can be released from the kamfork and brought back on board the Vicksburg 16
12.0 SUPPORT 12.1 Survey Vessel None 12.11 Security Vessel None 12.2 Other Support 12.21 All vessels must be suitably manned and be capable of 24 hours continuous operations. 12.22 Vessel Masters and their relief are required to have a good command of the English language. 12.3
Navigation Package All AHV’s are required to have a navigation package onboard
13.0 13.1
EMERGENCY CONTACT NUMBERS / ROUTINE COMMUNICATION Field Working
VHF channels 72
SSB
5930.0 KHz
Proposed Rig working
VHF channel 72 / 73
13.2 The following contact numbers are to be used during the tow as required. As a matter of protocol, all initial communication whether of routine or emergency nature shall be directed first to the ATWOOD office to Larry Holloway, Operations Manager VICKSBURG. If Larry Holloway is not available, any of the following ATWOOD personnel should be contacted.
ATWOOD OFFSHORE Offices – Thailand ( Bangkok )
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Office
Home
Mobile
Larry Holloway +66 (0) 2-7457305
+66 (0) 2-300-2664
+66-(0) 87-984-9882
Houston, Ext. 8780 Tony Wilson
+66 (0) 2- 7457305
+66-(0) 89-812-7224
Houston, Ext. 8781 Michael VanKeuren
+66 (0) 2-7457305 Houston, Ext 8783
+662 911-6750
+66-(0)8-9529-0022
COASTAL ENERGY Offices – ( Thailand ) Office Tony Veerachai
Marine Facilities
+662 6100594
Home +6621970031
Mobile +66817315090
Manager Rapee Kudisri
Drilling Manager
+6626100591
+66854867458
Ken Hemmerich
Operations Manager
+66 2 6100577
+66 819211061
Soraya OIM
OIM
+662 6100580
+66824288250
Suwat (Base Manager)
Songkhla Base Manager
+6674 331031
+66815417476
Vicksburg Office Inmarsat
+873- 350 302 310
V-Sat
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Home
Mobile
Tow Boats Comms: Contact Name
Boat Mini Sat
Boat Mini-M Sat Fax
Hand Phone
Via Radio Room
14.0
MEDIVAC PROCEDURES
14.1 In the event a serious injury or sickness occurs during the tow, Atwood Medivac Procedures shall apply while in Thai territorial waters.
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