Subsea fibre optics Submarine cable laying.pptx

SOSP

1. OBJECTIVE OBJECTIVE The objective of this method statement is to demonstrate the sequences and methodologies to be used by MOPROJECT LIMITED to safely execute the Tunu Submarine cable testing, Splicing, laying and termination task . This shall be done in compliance with the any available A FC drawing, cable manufacturer recommendations, relevant SPDC Design and Engineering Practices (DEP), Standard Construction Specification and industry best practices. The purpose of is to also give an adequate description of the dredging, disposal and survey methods to be followed and the precautions to be aware of in carrying out the works. This Method Statement will ensure that the works will be carried out in a safe, secure and efficient way. We shall also provide a detailed Risk Assessment is part of this Method Statement and should be seen as a ‘live’ document which will be altered if there is any change in circumstances or knowledge The sequence of operations described in this document is governed by weather and tidal conditions. This Method Statement has developed and will be implemented with the H ealth , S afety , Environment and welfare of all personnel and the environment being of utmost priority. The contents of this Method Statement are to be verbally communicated to the workforce involved by the Project Manager the day prior to the task commencing, this ensures that the correct personnel, tools and equipment are in place and gives enough time for suggestions or additional control measures identified during the briefing to be included within the Method Statement, prior to the task commencing on each location. The Method Statement will then be re-briefed in the form of a toolbox talk on the day of the activity, to ensure that the requirements are fully understood. Feedback from the workforce is encouraged Responsibilities The achievement /successful execution of any project is hinged on satisfactory standard of quality and safety which is the responsibility of all those assigned to the project. The description of the responsibilities involved in the management of the site project team is provided in the table below. The following key site personnel have the following responsibilities: Project Manager: Overall responsibility for ensuring safe working systems and control; Construction Lead: Coordination of the works, and the work -related operations; Surveyor: Responsible for all surveying work.

2. 2.0 SCOPE OF WORK. Dredging, Laying, splicing and termination of 11kV 3c x 70mm 2 XLPE/SWA/PVC power submarine cable across a navigable river over a distance of about 750 metres. 2.1 TOOLS Dredger Cable cutter Hydraulic crimping tool Boats Specialist Submarine cable laying Barge complete with secured cable rollers and winch Cable rollers Special Geotechnical survey and waterbed sounding equipment Insulation tester Cable knife Cable drum stand Crane floats Wrench Concrete weight. Electrical toolbox Health, Safety & Environment Van Oord will execute all works in line with Contract requirements, Irish legislation, European, and International Guidelines and Standards. In view of the potential hazards for this type of work in these circumstances and in addition to the project related procedures, special attention is drawn to, but not limited to, the following: Health and safety In order to arrange, provide and maintain safe systems of work for all employees at all times: Areas of HSE responsibility will be clearly defined and relayed to the whole project team; Adequate and proper facilities, equipment and apparatus will be provided and its correct use will be ensured, through training, all areas are to be kept clean and tidy and personnel will be responsible for ensuring their equipment is stored correctly at all times. Adequate training, instruction and information on Site specific Health, Safety and Environmental hazards and risks will be provided. A pro-active approach will be taken to Health, Safety and the Environment at all times, hazard spots and near miss reporting will encouraged throughout the duration of the project and any incidents will be investigated ensuring that procedures and / or RAMS are updated appropriately.

3. Personnel All construction personnel involved in the work will observe the following basic working rules, amongst others: Relevant personnel protective equipment (PPE) will be issued and used prior to the commencement of the work; PPE shall be worn at all times on site with exception of the dedicated safe area(s) and welfare facilities; Proper training and induction in the various roles for the type of activity will be performed; Experienced and active supervision will be in place at all work times.  At least the following PPE should be worn to execute the works as described in this Method Statement: Coverall with reflective vest Safety Shoes Helmet Life Jacket The indicated PPE should be worn at all times, excluding when inside the ships accommodation area. The Life Jacket Must be worn when working near open water where no sufficient handrail or edge protection is present or when accessing / egressing the vessel

4. 3.0 DREDGING PROCEDURE Carryout geotechnical survey of the work area to understand the terrain. This survey consists of a series of deep-sea soundings which not only furnish the depth of water, but also produce specimens of the bottom of the ocean and the temperature of the water. Agreed on the location for the dredge discharge point and cordon-off. Mark out, excavate the river banks to about 2 metres deep to indicate agreed cable route at both ends. Position dredger on the agreed dredging route including dispose line. Carryout dredging of the river to remove sand and debris along the cable route. Commence cable laying procedure simultaneously as the dredging operation. Demob dredger after desired dredging activities is completed