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Installation Procedure

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Boreline.gif (43562 bytes)Boreline has been specifically designed to replace rigid risers. Because of its design, using Boreline results in major savings in time and labour. A pump and column can be installed and retrieved in a fraction of the time required for the rigid riser. Over the long term, Boreline does not corrode or scale internally allowing for further savings.

 

Before you start

  • Ensure you have the following on site:
  • Boreline Couplings. Each coupling consist of a coupling body and two outer rings. The outer rings consist of three equal segments that make up the ring. Each ring has three allen screws.
  • The required length of Boreline
  • Sufficient Boreline Cable Straps needed to attach the power cable to the Boreline along the entire length of the riser. (1 Cable Strap is needed for each metre (3 ft) of riser )
  • Electrical cable - equal to the length of Boreline - plus 5%
  • Submersible Pump
  • Base plate and wellhead assembly
  • 2 Boreline Installation Clamps
  • Tripod or crane and the Rolling wheel Assembly
  • Allen keys file knife or hacksaw

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Fitting the Boreline coupling and riser to the pump

  1. coupling.jpg (7707 bytes)Ensure that the ends of the riser are square. Trim with a sharp knife or hacksaw if necessary.
  2. Screw the Boreline coupling into the check-valve (non-return valve) located at the top of the pump.
  3. Push the Boreline riser over the coupling body making the riser is flush with the shoulder at the threaded end of the coupling.
    Note: Do not use lubricant
  4. Fit the first ring, with the three segments, over the rib closest to the threaded end of the coupling body. Tighten all three screws evenly, ensuring the gaps between the segments are even. When fully tightened the gaps between these segments should be 1 - 2mm.
  5. Fit the second ring over the second rib positioning the gaps half way between the gaps of the first ring. Tighten the rings as explained above.

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Fitting the power cableglance06.jpg (12005 bytes)

  1. The Boreline riser should be laid on the ground with the rib facing up.
  2. Push the Boreline Cable Strap through each cable rib opening that appears along the entire length of the riser. The openings appear every metre or 3 ft. (Every half metre (1/2 ft) for the 6") Turn the riser over as you proceed to the next opening so that by the time all the cable straps have been inserted, the rib of the riser is facing down.
  3. Roll the power cable out next to the riser.
  4. Connect the power cable to the pump motor. (This work should be carried out by a qualified electrician only)
  5. Starting from the end nearest the pump lift the power centre of the riser. Bring the cable strap around the around the power cable, and towards the buckle. Pull tight, ensuring the power cable is hard against the Boreline riser. Buckle the strap.
  6. Move to the next cable strap. Before tightening the power cable, snake the power cable along the riser. (see diagram) The power cable should be fitted as shown so as to accommodate the extension characteristics of the riser in use.
  7. Repeat the procedure for fastening the cable strap and then move to the next cable strap. (Remember to snake the power cable along the entire length of the riser allowing approximately 5% slack, as shown in the diagram)
  8. Any additional airline tubes, high/low level probes etc. can be attached directly to the power cable using standard cable ties.

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Boreline installation procedure

  1. A tripod or crane will be required to lift the pump into the borehole. If a tripod is used it should be positioned directly above the borehole, high enough to allow the pump and clamp to be raised into the borehole.
  2. Connect the Boreline coupling to the pump discharge or check-valve, or non-return valve and then the Boreline riser to the coupling.
  3. Unroll the Boreline riser along the ground. Lay the power cable next to the riser along the length.
  4. Connect the power cable to the pump motor. (This should only be carried out by a qualified electrician) Use the Boreline cable straps to tie the power cable to the riser at the recommended intervals. (Remember to snake the power cable along the length allowing approximately 5% slack)
  5. Clamp the Boreline riser only (not the power cable) using the Boreline clamps approximately 500mm above the pump.
  6. Lift the pump using the clamp and lower it into the borehole until the clamp rests on the well head.
  7. Move the rolling wheel over the borehole ensuring that it is centrally positioned and secured. (An unsecured roller can move and cause injury to the operator)
  8. Lift the Boreline riser over the rolling wheel with the power cable fastened and positioned above the riser.
  9. Attach the second Boreline clamp to the other end of the riser and secure it to the installation vehicle. Reverse the vehicle so that the vehicle now takes the weight of the pump. Remove the first clamp. (The full load will now be taken by the vehicle and rolling wheel
  10. Drive the vehicle slowly forward allowing the pump and riser to be lowered into the borehole. Joiners, couplings and clamps must not pass over the rolling wheel.drop down.jpg (9567 bytes)
  11. When the vehicle is close to the rolling wheel, clamp the riser above the wellhead. Lower the riser slightly so that this clamp now rests on the wellhead. Remove the clamp from the vehicle.
  12. Attach the second Boreline coupling and head works to the end of the riser.
  13. Raise the head works using the tripod or crane, remove the clamp and lower the assembly onto the borehole.

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Boreline retrieval procedure

  1. Stop the pump. If a 6mm hole has been drilled into the check valve, allow the water to drain down (10s per foot) to the static water level.
  2. Disconnect the electrical supply and discharge pipe-work.
  3. Lift the Boreline out of the borehole and clamp the riser with the Boreline clamps.
  4. Place the rolling wheel against the borehole. Fold the Boreline over the rolling wheel and attach it to the vehicle. Drive the vehicle away from the borehole so that it takes the weight of the riser and pump and remove the clamp.
  5. Drive the vehicle slowly away from the borehole removing the Boreline and pump.
  6. As the pump approaches the top of the borehole, clamp the riser and allow the clamp to rest on the borehole.
  7. Use the tripod or crane to lift the pump out of the borehole.
  8. Please note. If the Boreline and pump have to be removed while full of water the column will be heavier than normal. In this case make sure to provide for the extra weight when using lifting devices and vehicles.

The table below gives the nominal weight of the Boreline and water column per metre / foot. Please note that the weights of the pump, cable and accessories should be added to establish the total weight of the column.

Diameter Weight of Boreline and Water
ins mm kg/m lbs/ft
1 1/2
2
3
4
5
6		 40
51
76
102
127
152		 2
4
7
12
17
24		 2
3
5
9
12
17

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