Exhibit F3 Installation Specification Edsviken 245 Kv XLPE

Document Exhibit F3 Date of Issue 2013-07-03 No of pages 21

Exhibit F3

Installation Specification Edsviken 245 kV XLPE Submarine Cable System

Svenska Kraftnät (Employer)

Rev No Issue Date Revision Summary Issued by Approved by 0 2013-05-24 First issue F Rüter G Gehlin 1 2013-07-03 Removal of sediments F Rüter G Gehlin changed in §4.3.

TABLE OF CONTENTS

1 GENERAL ...... 3 2 DEFINITIONS ...... 4 3 DESCRIPTION OF THE SITE ...... 4 4 INSTALLATION ACTIVITIES ...... 8 4.1 GENERAL REQUIREMENTS ON INSTALLATION ...... 8 4.2 TEMPORARY DISLOCATION OF GOLF BALL CURTAIN ...... 9 4.3 CLEARING OF POLLUTED MUD FROM SEA BOTTOM IN MÖRBYVIKEN ...... 9 4.4 PRETRENCHING OFFSHORE AND SHORELINE GATE...... 10 4.5 PULLING CABLES ASHORE ...... 11 4.6 LAYING SUBMARINE CABLES ...... 12 4.7 RESTORATION OF OFFSHORE TRENCHES AND SHORELINE GATES ...... 12 4.8 LAYOUT OF JOINT BAYS ...... 13 4.9 ANCHORING OF ARMOUR ...... 13 4.10 TRANSITION JOINTING ...... 13 4.11 JOINTING AND TERMINATING OPTICAL FIBRES FOR DTS ...... 14 4.12 JOINTING OPTICAL FIBRES FOR COMMUNICATION ...... 14 4.13 TERMINATING PD SENSOR CABLES ...... 15 4.14 TERMINATING PT100 SENSOR LEADS ...... 15 4.15 LINK BOXES ...... 15 4.16 EARTHING WORKS ...... 15 4.17 POSITION MAP OF JOINT BAYS ...... 16 4.18 DEMOBILISE AND CLEARING OF SITE...... 16 5 INTERFACE WITH OTHER CONTRACTORS ...... 17 6 DOCUMENTATION ...... 19 7 CABLE LAYING SPREAD ...... 20 8 CABLE LAYING FROM LAND ...... 20 9 OPTION ...... 21 10 ATTACHMENTS TO EXHIBIT F3...... 21

Document No and Title Page No Exhibit F3 3(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

1 General The Edsviken Submarine Cable Project is part of the Stockholm Ström Program, which will strengthen the supply of electricity to the larger Stockholm area. The Stockholm Ström Program consists of many projects, cable projects as well as substation projects and OH line projects. One of the cable projects being the 245 kV Danderyd – Järva/Ålkistan Project. This project includes UG cable installations, tunnel cable installations and submarine cable installations, but also some substation works. Thus the Edsviken Submarine Cable Project will be part of the 245 kV Danderyd – Järva/Ålkistan Project, but it is sourced separately from the UG and tunnel cables. The UG cables that Contractor will connect its cables to at the two joint bays, will be installed before Contractor accesses the joint bays for pulling in cable ends.

There are five three-phase groups to be installed in parallel in the Edsviken Submarine Cable Project. Looking from Bergshamra towards the shoreline of Stocksundet, the three groups to the left are part of the Danderyd – Järva Link, and they will be owned and operated by Svenska Kraftnät (SvK). The two groups to the right are part of the Danderyd – Ålkistan Project and these will be owned and operated by Fortum.

This Exhibit F3 specifies the scope of and requirements for the installation of cable systems. Exhibit F1 specifies the scope of supply for the cable systems. The technical requirements on the cable systems are given in Exhibit F2.

The northwest land site is referred to as Mörby, Kevinge, or Danderyd (located in Danderyd municipality), and the one in southeast is referred to as Bergshamra (located in Solna municipality). The small bay outside Kevinge is referred to as Mörbyviken, and the narrow straits outside Bergshamra landing point is referred to as Stocksundet.

The Contractor shall use the most optimal methods for installation, for the cables and joints supplied for this project. The Contractor shall use installation methods that minimise the risk level for damaging the cables, causing personal injuries, or causing negative environmental impact. The Works shall be performed in accordance with good practice, and based on information and constraints given in this Contract, including attachements to Exhibits F1, F2 and F3.

Following installation methods are acceptable:

• Cables lay from barge or vessel, using anchor mooring (DP vessel with thrusters are not acceptable).

• Cables floated on cushions from barge or vessel that is off site.

• Cables floated on cushions from land (Kevinge side).

• Cable on drum, turntable or in coil.

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Document No and Title Page No Exhibit F3 4(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

2 Definitions

Site The area in and around the cable route that is affected by the Installation work.

Shoreline Gate The interface area between offshore and onshore trenches, the affected area of the shoreline, including the trench work on land where seawater can enter the trench.

3 Description of the Site The description of site is done here in Exhibit F3, and its attachments. The Contractor has an obligation to search and find any information missing, or unclear.

Edsviken is a narrow water located north of Stockholm city.

The position of the site can be seen on a map using following (alternatives of) coordinates: WGS 84 (lat, lon): N 59° 23.449', E 18° 1.759' WGS 84 decimal (lat, lon): 59.39082, 18.02931 RT90: 6587685, 1626368 SWEREF99 TM: 6587487, 672026

Edsviken is connected to the Baltic Sea (no locks), it is rather narrow and shallow, and access is limited by a railway bridge with a sign posted stating normal clearance of 8 m, the Contractor shall verify clearance if critical.

The borderline between the municipalities of Danderyd in the north, and Solna in the south runs in the middle of Edsviken.

There are five three-phase groups to be installed in this project. The three to the west/south are connecting to the circuit between Danderyd and Järva. The other two are connecting to the circuit between Danderyd and Ålkistan, see map below

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Document No and Title Page No Exhibit F3 5(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

Overview map of site and surroundings, dotted line in Edsviken indicates submarine cable route.

The Transition Joint bays will be located about 160 m onshore at Kevinge, and about 40 m onshore at Bergshamra.

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Document No and Title Page No Exhibit F3 6(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

At Mörbyviken there is a golfers´ driving range, where the balls are (hopefully) shot into the bay Mörbyviken. In the waters, the driving range is equipped with an arrangement with nets, so that the balls can be collected. This arrangement will need to be moved (completely or partially) by Contractor for works, and restored after completion of installation. The Contractor may be instructed to install a new net, provided by the Golf Club.

Picture, golf driving range with collection curtain

The sea bottom at Mörbyviken is polluted.

The submarine route (topology and geology) can be seen in attached maps, see attached drawings 30010210-401-01, -02, -03, -04, -05, -06, and -07.

The site for onshore trenches at Mörby is very close to houses, and the joint bay is at the premises of a golf court (Kevinge Golf Club).

The site for onshore trenches at Bergshamra is in a Municipal Nature Protected Area. This area is particularly sensitive, and no damages are acceptable.

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Document No and Title Page No Exhibit F3 7(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

The typical boat traffic in Edsviken is with small boats, and primarily with private leisure boats. Speed limit is 5 knots in the strait and 8 knots where the strait widenes to the north.

There are two navigation marks close to the cable corridor. These are positioned on the bottom with concrete blocks at approximately 700 kg each. The closest cable laid must not be closer than 10 m from such a block.

Close to the Shoreline Gate at Bergshamra there is an unidentified pipe on sea bottom. The Contractor shall check and inspect this pipe, and take care not to damage during installation works.

There are walking trails crossing the onshore trench at both sides, and also a small road on the Kevinge side.

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Document No and Title Page No Exhibit F3 8(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

4 Installation Activities

4.1 General requirements on Installation Contractor shall notify Employer in writing 14 days before starting an installation activity, including but not limited to pre-trenching, laying, jointing, field testing, and testing after installation.

Any and all tools and equipment needed for safely and timely performing the installation activities shall be provided by Contractor himself. The same applies for any utilities needed, such as (but not limited to) electricity, and pressurised air. The Contractor shall remove from site all such temporary tools and equipment when not needed anymore, as well as waste as soon as possible. All cable waste belongs to Employer, Contractor may not bring home any of his own cable pieces, or pieces from Connecting Cables. Contractor shall however collect cable waste, and bring it to a local metal recycling station on behalf of Employer.

Installation works may not be started before the Quality Plan for Installation, the HSE Plan for Installation and Method Statements for Installation have been approved by Employer.

The Contractor and the Employer shall jointly perform an inspection before the start of the work at Site, documenting the conditions. The Contractor shall arrange the inspection and invite the Employer.

Before (but not more than two weeks) the Contractor shall conduct a HAZOP meeting, where all hazardous aspects of the installation work, and the mitigative and protetctive actions to be taken are identified and discussed. All parties engaged or affected by the installation activities shall be invited, also the Employer shall be invited to this meeting.

Each morning before start of that day’s installation work, the Contractor shall arrange tool-box meetings, which focuses specifically on the practical aspects and safety aspects of the work for that day. The Employer shall have the right to participate in these meetings.

If over-size trailers or vehicles wil be used for transportation of cables or other project related goods or equipment, Contractor shall investigate and seek necessary permits for such hauling. Contractor shall submit a Traffic Management Plan subject to Employer approval.

All responsibilities related to the offshore trenches and activities up to and including Shoreline Gates are with Contractor.

The allowed work corridor on land is totally 15 m wide. No work may be performed outside this corridor, including parking of vehicles, placing/storing of equipment or placing excavated masses. Parts of this corridor will be used by Civil Workscontractor for placing excavated masses. If Contractor needs to use this space, Contractor must

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Document No and Title Page No Exhibit F3 9(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

himself and at his own costs arrange for transportation of excavated masses to and back from other approved storage area.

The onshore trenches and the joint bays will be prepared by the Civil Workscontractor. Contractor must communicate well in advance and continuously update when access to onshore trenches and joint bays is needed by Contractor. A date shall be agreed upon when responsibility over this part of site (onshore trench and joint bays) is transferred to Contractor (the dates may be different for the two sides). When taken over by Contractor, the onshore trench shall be prepared and ready for cable pulling. The Civil Workscontractor is responsible for keeping the onshore trench and joint bay dry up to date for transfer of responsibility. Contractor may not reject taking over the onshore trench or joint bay if a best effort has been made to keep the trench dry. . If Contractor starts substantial work on either side, it will be regarded as responsibility has been taken over from Civil Workscontractor including responsibility to complete trenches according to project drawings before installing any pipes, cables etc.

After completed pulling of cables, the responsibility for the onshore trench is returned to Civil Workscontractor. After finished Transition Jointing and all other Contractor’s work in the joint bay, the responsibility is returned to Civil Workscontractor.

During the time that Contractor has the responsibility of onshore trench and/or joint bay, Contractor is fully responsible for safety and security of the site, specifically drainage and clearing of snow. This includes the onshore work area (15 m wide), fences around the work area, bridges (including handrails and fences/barriers) crossing the onshore trenches, and any safety arrangements associated with the bridge and road crossings.This should be reflected in Contractor’s HSE plans.

4.2 Temporary dislocation of golf ball curtain The curtain shall not be damaged, and it shall be returned into same position after laying of cables and restoration of sea bottom. Possibly the Contractor may be requested to install a new curtain, provided by the Kevinge Golf Club.

4.3 Clearing of polluted mud from sea bottom in Mörbyviken From the shoreline in a 7 m wide corridor, with the centre-line of the cable corridor in the centre, the uppermost bottom sediments shall be removed by means of suction pumps down to 25 cm depth, or where undisturbed clay is encountered, whichever comes first. This shall be done until the water depth reaches three meter, but not less than 40 m from shore. The suction pumps shall have a low suction pressure to limit the disturbance of the sediments to a minimum. The collected sediments and water shall be deposited and accounted for at an authorised dumping station in Stockholm area, station to be approved by Client. Contractor shall provide a certificate showing weight and volume of deposited sediments. This shall be done first, before any other trenching work has commenced in Mörbyviken.

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Document No and Title Page No Exhibit F3 10(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

While the suction of mud is in progress, temporary curtains shall be used on all sides of corridor in order to limit the spreading of disturbed sediments.

4.4 Pretrenching offshore and Shoreline Gate Pretrenching shall be done out to where the undisturbed bottom is 3 m below surface, trench profile as shown in attached drawings 30010210-201-01 and -02 respectively.

While the pretrenching work is in progress, temporary curtains shall be used on all sides of the corridor in order to limit the spreading of disturbed sediments.

Cable bed, and app 30 cm cover (to be applied after completed laying of cables in pre- trenched section) shall be made with crushed stone 16 - 32 mm.

All retrieved masses from the sea bottom must be treated as if polluted, until further tests have been made. This means that all masses shall be stored in covered non- leaking containers, pending lab testing. The Contractor shall arrange with analysis of the samples to determine the degree of pollution. Based on the analysis done, Employer will together with the local authority decide on what actions to take:

1. Base case: The masses are determined to be OK to use as fill in the offshore trench. This case shall be included in Contractor price.

2. Alternative case: The masses are classified as polluted, and shall be transported and deposited at an approved environmental waste site. Contractor shall source an acceptable replacement mass to fill. The Employer will pay the fee at the disposal station all other costs related to this alternative shall be borne by Contractor. The cost difference between this case and the base case above shall be separately priced by Contractor.

It may be possible for Contractor to in advance take samples from sea bottom to determine degree of pollution. This requires that sufficient samples from representative sites and depths are taken up for analysis. Contractor is not granted to access the area for collecting samples earlier than stated in Exhibit E, but if Contractor so wishes Employer may seek the permission from the golf club for an early sampling operation.

Contractor shall also clear the respective Shoreline Gate. Soil and rocks taken from Shoreline Gate shall be stored, in order to be reused after laying for restoration.

The length of pretrenching is approximately 15 m in Mörbyviken, and 8 m at Bergshamra. The Contractor shall also trench a few meters up on land at each site, to meet the onshore trench (all above sea level) made by Civil Workscontractor.

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Document No and Title Page No Exhibit F3 11(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

4.5 Pulling cables ashore The cable shall be pulled ashore on both ends into trenches prepared by Civil Workscontractor. On Bergshamra side the joint bay will be close to the Shoreline Gate, and it may be arranged sloping (maximum 15O). Near the shoreline there is a hiking trial that the onshore trench will cross. Civil Workscontractor will bridge the trench. Most likely the bridge will need some support in the trench. At the far side of the joint bay there is another hiking trail. The trail may be bridged by Civil Workscontractor if needed.

On Kevinge side, there is a walking trail near the shoreline. The onshore trench will cross this trail. Civil Workscontractor will bridge the trench. Most likely the bridge will need some support in the trench. There is also a small road app 100 m inside the Shoreline Gate. The Civil Workscontractor will install pipes for this crossing for pulling through cables. These shall be filled with bentonite after completed pulling, on responsibility and account of Civil Workscontractor.

Contractor shall at all times allow access for the public to pass the working area on the trails and bridges. Any need for temporary blocking of passage shall be minimised and be agreed with Employer beforehand.

On Kevinge side, no access for works will be given upstream of the joint bay.

Before pulling operation starts, Contractor shall arrange Connecting Cable ends and containers in a suitable way, so that pulling operation can be as efficient as possible, and risk for damaging Connecting Cables minimised. Handling of Connecting Cables shall be done by Contractor in a professional and careful manner.

The cables may be pulled in individually, or bundled. If bundled pull is applied, Contractor must secure that pulling forces are equally distributed between the three bundled cables. The cables shall be positioned in the onshore trench as per attached drawings. Rotating of bundle is accepted on sea floor up until pre-trenching. Cable bundles finally installed in onshore trench may not be rotated.

Positioning of cable ends relative joint bay slab, shall be coordinated between the two joint bays. Due care should be taken that sufficient length of integrated DTS Fibre can be separated from the cable.

The cables shall be positioned in the onshore trench as per attached drawings. Rotating of bundle is not acceptable in onshore trenches, phase positions must be maintained. Required phase positions are shown in attached drawings 30010210-101-03 and -04 respectively.

The profiles for onshore trenches can be seen in attached drawings 30010210-101-01 and -02 respectively.

In these drawings (and the attached drawings showing the pre-trenced sections) the position of Edsviken Submarine Optical Cable are shown. If any crossing of an Optical Cable over a HV cable is needed, it may not be done in the submarine part, it must be carefully arranged in the onshore cable trench.

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Document No and Title Page No Exhibit F3 12(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

In the entire onshore trench, and in the pre-trenched offshore section, an empty pipe shall be bundled to each Edsviken Submarine FO Cable. The ends shall be capped. These tubes shall be made of PE, and have dimensions to safely serve for a later pull-in of a replacement Submarine Optical Cable, nominally 110/95 mm. The arrangement serves as contingency for any future possible need to pull in new Submarine Optical Cables.

When all cables are finally positioned, but before covering cables, exact positioning records of the cables shall be done by Contractor. A fix point on each trefoil, and each fibreoptic cable shall be recorded at each 10 m, and at turning points, separations in turns 0,5 m. Precision requirements: +/- 25 cm in any axis. Coordinate systems to use: SWEREF99 TM (xy-plane), and RH2000 (z-axis).

4.6 Laying submarine cables The cables shall be laid bundled in a trefoil configuration. Twisting of cable bundles in Edsviken is acceptable, providing Contractor has demonstrated to the satisfaction of the Client that such handling is safe, and distribution of forces is equal.

The cable bundles shall be laid in offshore trench, and at water depths exceeding 3 m directly on the sea bottom.

At water depths exceeding 3 m, there need to be no external protection applied. The separation between the trefoils shall nominally be ≈water depth≤10 m. Maximum laying corridor width (outer distance between the outer cables) is 40 m.

Touchdown shall be visually monitored.

When all cables are finally positioned, but before covering cables in nearshore trench, exact positioning records of the cables shall be done by Contractor. A fix point on each trefoil shall be recorded at each 10 m, at turning points (separation in curves max 1 m), and at Shoreline Gates and end of trenched and protected cable. Precision requirements: +/- 25 cm in any axis. Coordinate systems to use: SWEREF99 TM (xy- plane, and RH2000 (z-axis).

4.7 Restoration of offshore trenches and Shoreline Gates Cable in offshore trenches shall be protected and restored as shown in attached drawings 30010210-201-01 and -02 respectively.

Contractor shall restore Shoreline Gates to the original conditions (as before start of work). Employer may request Contractor to improve Shoreline Gate restoration if so called for by risk of erosion.

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Document No and Title Page No Exhibit F3 13(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

4.8 Layout of joint bays The Contractor will be given a 15x6 m concrete slab to perform jointing on, and to position the Transition Joints on. These slabs may not necessarily be perfectly horizontal. This is specifically so at Bergshamra where the slab will need to have an elevation angle, this will however not be more than 15O.

In Bergshamra at the shoreline side of the concrete slab, an extra concrete arrangement will be made for the purpose of armour anchoring (hanging off). This will be a concrete block of approximately 1 m wide and 1 m deep for the full width of the concrete slab. The top surface of block will be approximately 10 cm above the top surface of the slab. Contractor shall make the holes and any arrangements needed in this part, to fit the armour hang-off devices, there may be armour steel in the block and slab.

The sealed Connecting Cable ends and the Containers (PD sensor, DTS Fibres, and for Fibre Optic Jointing) will be placed on or next to the slab before Contractor gets access to site. Contractor shall arrange (move if necessary) these so that cable pulling, Transition Jointing, and all other works safely can be done in this limited area. After completed jointing work, Contractor shall put all Containers and Link Boxes in correct positions, see attached drawings 30010210-301-01 and -02 respectively, before transferring responsibility of site back to Civil Workscontractor.

4.9 Anchoring of armour All armour wires shall be clamped by clamping device provided by Contractor. The clamping device shall be bolted to a foundation provided by Civil Workscontractor (see above). The anchoring of armour shall be able to withstand a maximum pulling force of the same maximum force as the armour layer can withstand. This applies for both HV Submarine Cables as well as Submarine Optical Cable.

Armour anchoring of HV Submarine Cable shall not be done at Kevinge joint bay, only at Bergshamra joint bay. Armour wires shall be earthed at both joint bays, connected to closest earthing pole.

4.10 Transition Jointing Contractor shall perform the Transition Jointing. Any and all permanent and temporary supports and fixtures shall be provided by Contractor.

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Document No and Title Page No Exhibit F3 14(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

4.11 Jointing and terminating optical fibres for DTS All DTS fibres from the Edsviken HV Submarine Cables shall be brought to the designated DTS Fibre Jointing Box (one Box per trefoil). All fibres in the Connecting DTS Fibre Cables shall be jointed to functional DTS Fibres from Edsviken HV Submarine Cables. Multimode fibres shall be jointed only to multimode fibres, and correspondingly so also for singlemode fibres. The left-over DTS Fibres from the HV cables shall be safely terminated in the DTS Fibre Jointing Box, leaving as much sling as possible.

There is one Connecting reference DTS Fibre Cable on each side. These fibres shall also be connected with integrated DTS Fibres from Edsviken HV Submarine Cables (matching duly noted in the as-built documentation).

As number of fibre joints for the DTS system shall be minimised, no extra fibre joints between integrated fibre and connecting fibre shall be accepted, unless exceptional cases agreed by Employer.

Each DTS Fibre Cable (or steel tube) shall be inserted into a protective plastic pipe between HV Cable and DTS Fibre Jointing Box.

In the eventuality that any taken out DTS Fibre does not reach all the way to the DTS Fibre Jointing Box, it shall be properly sealed and the end left well protected in a plastic installation pipe. Position shall be duly noted in the as-built documentation.

At least 50% of the fibre redundancy stipulated above, shall be intact and available after completed installation.

The DTS Fibre Jointing Boxs (provided by Contractor) shall be installed by Contractor in the DTS Fibre Access Container (provided by Civil Workscontractor) that has an opening diameter of 600 mm, and a diameter at the base of 1000 mm. Exterior height is approx. 860 mm. The arrangements shall be such that it is possible to safely lift out each and any DTS Fibre Jointing Box for performing new fibre joints.

4.12 Jointing optical fibres for communication Matching of colour codes shall be performed by Contractor, and be subject to Employer approval before start jointing. Contractor shall (after integrity check, see Exhibit F2) joint the optical fibres in the Edsviken Submarine FO Cable, to the Connecting FO UG Cable. This shall be done in a Fibre Optic Jointing Box. Contractor shall provide and arrange for all plastic installation pipes for DTS Fibres/steel tubes in the joint bay.

The Fibre Optic Jointing Box (provided by Contractor) shall be installed by Contractor in the Fibre Optic Access Container (provided by Civil Workscontractor) that has an opening diameter of 600 mm, and a diameter at the base of 1000 mm. Exterior height is approx. 860 mm. Contractor shall leave a 15 – 20 m sling of each FO Cable in the

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Document No and Title Page No Exhibit F3 15(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

bottom of the Container, arranged in such a way that it will be possible to lift out the Fibre Optic Jointing Box and perform jointing some 15 – 20 meters away.

4.13 Terminating PD Sensor Cables The PD Sensor Boxes (provided by Contractor) shall be installed by Contractor in the respective PD Access Containers (provided by Civil Workscontractor) that has an inner diameter of 400 mm. Contracor shall arrange the PD Sensor Box to be close to the lid. The lid will be approximately 10 cm below ground surface after restoration.

All sensor cables shall be available in the PD Sensor Boxes.

4.14 Terminating Pt100 sensor leads There shall be one Thermocouple Sensor Box per three phase group in SvK circuits. It shall be placed on top of DTS Fibre Jointing Box in the DTS Fibre Access Container, in such a way that it could be lifted out to allow access of DTS Fibre Jointing Box.

There shall be 10 – 20 m extra sling of each sensor lead. Contractor shall provide and arrange for all installation pipes for Pt100 sensor leads in the joint bay.

4.15 Link Boxes The Link Boxes shall be directly buried in cable sand in the joint bay (see attached drawings).

A common earth cable or wire shall connect between each Link Box and the earthing system of the joint bay. The connection shall be made to an earthing pole situated in each corner of the joint bay, see attached drawing.

4.16 Earthing works Contractor shall provide all 10 kV Earthing Cables and Earthing Wires needed, and perform all earthing work in the joint bays. Civil Workscontractor has, before making the joint bays available for Contractor, arranged the earthing for functional earthing. This consists of one earthing pole in each corner (copper-clad steel pole 5/8 inch diameter), one complete turns around the joint bay with 50 mm2 earthing wire connecting them at

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Document No and Title Page No Exhibit F3 16(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

each pole, and the ends of four 50 mm2 tinned Cu earthing wires that has run along the Connecting Cables.

Contractor shall earth screen from Connecting HV UG Cables, and lead sheaths from Edsviken HV Submarine Cables through Link Boxes. The Link Boxes shall be earthed in an earthing pole by means of screwed connector. Between screen/leadsheaths and connection point in Link Box, there shall be insulated Earthing Cables. Between Link Box and Earthing pole, there shall be tinned 150 mm2 copper wire, except for the gland throught the Link Box wall and further 50 – 100 cm where the wire shall be insulated.

Armour layers of Edsviken HV Submarine Cables, and Edsviken Submarine FO Cable, shall be earthed directly to the functional earth in the joint bay. This may be done by means of screwed connection to pole, or crimping sleeve to joint bay 50 mm2 tinned Cu earthing wires.

Reference is made to the attached overview drawing of earthing principles in joint bay.

4.17 Position map of joint bays Contractor shall make descriptive photographs, and geometrically correct overview drawings (in a dwg format or equivalent) of all features in the joint bay. Positioning shall be made in three dimensions. This shall be done before handover to Civil Workscontractor.

4.18 Demobilise and clearing of Site. After finishing Installation work, Contractor shall make sure that no waste or tools left behind, and that Site is left in a nice as intended status. Any left equipment, waste or other objects from the Contractor will be disposed of, the cost for this will be borne by Contractor

 AB Svensk Byggtjänst 2007

Document No and Title Page No Exhibit F3 17(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

5 Interface with other contractors This section provides an overview list of interfaces with other contractors. Interfaces may also be identified elsewhere in the Contract.

1. Civil Workscontractor will excavate and prepare the joint bays, one at each side of Edsviken. The bottom will be levelled with a 6 x 15 x 0,1 m concrete slab. The joint bay slabs are not necessarily horizontal.

2. Civil Workscontractor provides and installs the earthing system in the joint bays.

3. Contractor connects the earthing from the cables.

4. Civil Workscontractor also provides the concrete block for armour hang-offs at Begshamra side.

5. Civil Workscontractor will source all Access Containers for the joint bays, and make them available to Contractor at the joint bays at handover of site responsibility.

6. Civil Workscontractor will make the foundation for armour anchors at Bergshamra joint bay.

7. Civil Workscontractor will excavate and prepare onshore trench, see attached drawings 30010210-101-01 and 02 respectively.

8. Civil Workscontractor will supply a 0 – 4 mm cable sand for bed, and filling. The cable sand may be crushed material.

9. While under Civil Workscontractor responsibility for trenches and joint bays respectively, he shall make all reasonable efforts to keep the trenches and joint bays free from rain and snow is his duty, and on his account.

10. While under Contractor responsibility for trenches and joint bays respectively, he shall make all reasonable efforts to keep the trenches and joint bays free from rain and snow is his duty, and on his account.

11. Civil Workscontractor will arrange with buried pipes under the road crossing near Kevinge joint bay.

 AB Svensk Byggtjänst 2007

Document No and Title Page No Exhibit F3 18(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

12. Contractor will pull the cables, and will provide and arrange all equipment needed for this.

13. Civil Workscontractor fills compacts and restores cable trench on land.

14. Civil Workscontractor fills and restores the joint bays after completed work.

15. Contractor performs the armour anchoring works, and fastens the armour device in the foundation.

16. Contractor performs the Transition Jointing.

17. Contractor performs all fibre joints and fibre terminations in Boxes, and terminates PD Sensor Cables and Pt100 leads in dedicated boxes, placed in underground containers provided by Civil Workscontractor.

18. Contractor provides Link Boxes, and performs all earthing works in the joint bay.

19. Civil Workscontractor refills and restores joint bays.

20. Contractor will do integrity check of all optical fibres along/in Edsviken cables before jointing/terminating.

21. Other land or tunnel cable contractor for the Danderyd – Järva Project will perform After Installation Tests (HV test and TDR fingerprinting).

22. For any repairs needed on supply by Contractor, the Contractor itself has the responsibility obtain any needed permit, and to arrange and fund any excavation and restoration works.

 AB Svensk Byggtjänst 2007

Document No and Title Page No Exhibit F3 19(21) Project Manager Installation Specification Peter Jonsson Project Document No

Date of Issue Edsviken 245 kV XLPE Submarine Cable System 2013-05-24 Status Rev.Date Rev No 2013-07-03 1 Code Text

6 Documentation Documents and information to be supplied with the tender are listed in Exhibit J. Some of these may be required also to be submitted during the Contract Period. All documents are subject to Employer approval.

Installation documents Set 1:

1. Method statement for clearing and disposing of polluted mud in Mörbyviken 2. Method statement for excavating, storing, and handling the possibly polluted masses from the sea bottom. Document to describe the plan for the two alternatives (disposing of polluted masses and sourcing new masses, or using the excavated masses). 3. Method statement for offshore pre-trenching and restoration 4. Description and detail drawings of pulling ends to be mounted on cables. 5. Methodology for cable laying 6. Methodology for transition jointing with already installed cables 7. Methodology for testing, jointing and/or terminationg of optical fibres. 8. Quality Plan for all installation work 9. HSE Plan for all installation work 10. Description of and requirements for Spare Parts Storage 11. Traffic Management Plan

Installation documents Set 2:

1. Fault Location Manual (shall be delievered even if the option for Fault Location Equipment is not called for). 2. Repair Manual (shall be delievered even if the option for Repair Tools and Equipment is not called for). 3. Complete Installation Records with actual positions of all cables. The records must contain full traceability of all cable lengths and accessories back to corresponding production records. 4. Complete tables with ID of jointed and terminated fibres. 5. As-installed records of joint bays, (see §4.17). 6. All Test reports from After installation testing 7. List of spares provided, Maintenance Manual for Spares