Electricity Distribution Equipment
Chapter House is recognised as one of the leading advisors relating to damage which has occurred to electricity distribution apparatus owned by the Distribution Network Operators in the UK and Ireland. Our expertise covers a range of electricity distribution apparatus from low voltage networks to transmission gas and fluid assisted cables operating at voltages up to 275kV

I have extensive experience of:

• Lead alloy reinforced sheath, aluminium sheathed and Mollerhoj fluid (oil) filled transmission cables and their associated hydraulic systems operating between 20,000 and 275,000 volts.
• Gas assisted aluminium sheathed transmission cables operating at 33,000 volts.
• Solid type lead alloy sheathed cables operating s between 20,000 and 132,000 volts.
• Polymeric cables operating up to 66,000 volts.
• Solid type lead alloy sheathed, aluminium sheathed and polymeric cable operating at voltages ranging between 6,600 and 11,000 volts.
• Low voltage distribution cables and service connections.
• Cable terminations, switchgear, transformers and ancillary apparatus in electricity substations operating at voltages between 230 and 132,000 volts.
• Overhead line structures and the associated underground cable terminations operating at voltages between 230 and 132,000 volts.
• Evaluating repair procedures, material costs, contractor’s charges, and direct labour costs.

Telecommunication Apparatus
I have advised on over 2000 incidents where damage has occurred to electromechanical, co-axial and optic fibre cables operating in the Core and Access networks of the telecommunication network operators in the UK.

These investigations related to the following procedures:-

• Installation and repair of damaged underground ducting arrangements.
• Replacement and repair of damaged underground jointing chambers.
• Installation of newly constructed ducting arrangements and the associated underground jointing chambers.
• Replacement and repairs associated with cabinets housing Primary Cross Connection Points.
• Repair procedures associated with electromechanical copper and aluminium conductor cables.
• Repair procedures associated with PVC sheathed optic fibre and blown fibre cables.
• Repair procedures associated with co-axial cables.

Gas Distribution Networks
I have advised on a large number of incidents of damage associated with the apparatus owned by the gas utilities.

These investigations related to the following procedures:-

• The procedures associated with major incidents resulting in the loss of gas supply to premises.
• Temporary and permanent repairs by encapsulation.
• Permanent repair by encapsulation.
• By-Pass procedures to maintain continuity of gas supply to allow sections of main replacement.
• Repair of low pressure mains and services.

Water Distribution Networks and Drainage Systems
I have advised on a number of incidents relating to damage caused to sewer and surface water drainage systems. I am currently developing expertise and the provision of advice relating to damage which has occurred to the water and drainage networks owned by the utilities, local authorities and private individuals.