Fluid Filled Cables

Like many international utilities, ESB Networks install underground cables in urban locations where it is not feasible to construct overhead lines. Fluid filled cables were installed on ESB Networks distribution and transmission systems between 1950 and 1989. ESB Networks plan to replace all fluid filled cables by 2035. Replacement is prioritised based upon environmental risk for the circuit involved. 

  • The conductor transports electrical power.
  • The insulator is used to stop electrical power from the conductor escaping.
  • The earth sheath ensures the cable operates safely.
  • The other covering serves as a protective coat around the cable.

 

Cable History

Like all technologies, underground cable technology developed with improvements in materials, science and engineering. There have been three distinct cable technology periods. 

Fluid Filled Cables - Replacement Programme

Recognising the environmental challenges in operating and maintaining FFCs, ESB Networks started a fluid-filled cable replacement programme in 2005. So far, 20 % of FFCs have been replaced, removing the source of 40 % of the previous cable fluid leaks from the system. At present, there is approximately 177 km of FFCs on the Transmission and Distribution Electricity Networks. We have a number of active fluid filled cable replacement projects at construction stage and additional projects at route selection stage.

Such major infrastructural projects involve:

  • Scheduled outages for which businesses and families adjacent to these works must be informed and given adequate notice
  • Securing temporary road opening licences
  • Traversing third party infrastructure, services and major road, rail, waterway crossings
  • Temporary extended road closures
  • Significant trench excavations for new plastic insulated cable and cable replacement
  • Jointing works

The projects will be undertaken on a phased basis in populated urban areas with significant traffic volumes. Ongoing engagement with relevant stakeholders is vital to ensure efficient and successful delivery of these cable replacement projects.

ESB Networks has now committed to an accelerated investment programme with the Commission for Regulation of Utilities (CRU). An environmental assessment informs both the schedule and the timing of individual cable replacements.

As part of the Price Review Five (PR5) determination, CRU approved Distribution and Transmission FFC Replacement projects totalling 98 km. The remaining FFCs are planned to be replaced over subsequent Price Reviews subject to CRU approval.

Site IDRepair DateCircuit NameStatus Coordinates
      
FFC-2020-003Nov 2020Bedford Row - Francis St.S5(C) - Cable repaired53.34581-6.264739
FFC-2020-002Feb 2021Carrickmines - Poolbeg 220 kVS5(C) - Cable repaired53.279336-6.19794
FFC-2020-001Oct 2020Fairhill - Kilbarry 38 kVS5(C) - Cable repaired51.906636-8.4811969
FFC-2019-016Jan 2020Bedford Row - Sheriff StreetS5(C) - Cable repaired53.347799-6.254982
FFC-2019-015Feb 2020Dennehy's Cross - TogherS5(C) - Cable repaired51.876808-8.495333
FFC-2019-012July 2020Poolbeg - Ringsend TF4S4 - Cable leak repaired, permanent repair to be completed at next available circuit outage53.339189-6.206704
FFC-2019-011Dec 2019Kingsbridge - Watling StreetS5(C) - Cable repaired53.346858-6.290889
FFC-2019-009Jan 2020Pembroke - Ringsend S52S5(C) - Cable repaired53.339206-6.230836
FFC-2019-008Nov 2019Finglas - MervilleS5(C) - Cable repaired53.387300-6.298316
FFC-2019-007May 2020Deansgrange - SallynogginS5(C) - Cable repaired53.275976-6.149401
FFC-2019-006Mar 2020Harold’s Cross - RingsendS5(C) - Cable repaired53.340596-6.220574
FFC-2019-004Mar 2019Francis St - InchicoreS5(C) - Cable repaired53.337071-6.279194
FFC-2019-003Oct 2019Coolock - RahenyS5(C) - Cable repaired53.386368-6.201869
FFC-2019-002Apr 2020Clontarf - East Wall RoadS5(C) - Cable repaired53.370090-6.202967
FFC-2019-001Aug 2019Bedford Row - South King StreetS5(C) - Cable repaired53.344227-6.262380
70Nov 2012Fairhilll - Liberty St 38 kVEnvironmental Assessment Underway. Cable Repaired.51.901435-8.479662
69May 2018Inchicore - Poolbeg One 220 kVEnvironmental Assessment Underway. Cable Repaired.53.331882-6.285201
68Nov 1993Francis Street - Inchicore 110 kVEnvironmental Assessment Underway. Cable Repaired.53.336102-6.312441
67Dec 1998Finglas - Northwall 220 kVEnvironmental Assessment Underway. Cable Repaired.53.350882-6.21735
66Nov 2002Finglas - Merville 38 kVEnvironmental Assessment Underway. Cable Repaired.53.381787-6.291708
652003Pembroke - Ringsend 38 kVEnvironmental Assessment Underway. Cable Repaired.53.342236-6.219486
64May 2003Inchicore - Poolbeg Two 220 kVEnvironmental Assessment Underway. Cable Repaired.53.335322-6.319173
63Jul 2003Phibsborough - Granby Row 38 kVEnvironmental Assessment Underway. Cable Repaired.53.358528-6.271864
62Nov 2003Blackrock - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.309773-6.195082
612004Dennehy's Cross - Liberty Street 38 kVEnvironmental Assessment Underway. Cable Repaired.51.888760-8.503053
602004Pembroke - Ringsend 38 kVEnvironmental Assessment Underway. Cable Repaired.53.339201-6.230703
59Mar 2004Ballymun - Fairview 38 kVEnvironmental Assessment Underway. Cable Repaired.53.364976-6.230280
58Apr 2004East Wall Road - Fairview 38 kVEnvironmental Assessment Underway. Cable Repaired.53.354745-6.228791
57Jul 2004Inchicore - Poolbeg TwoEnvironmental Assessment Underway. Cable Repaired.53.332914-6.339321
56Nov 2004Fairhill - Kilbarry 38 kVEnvironmental Assessment Underway. Cable Repaired.51.907389-8.482369
55Nov 2004Francis Street - Inchicore 110 kVEnvironmental Assessment Underway. Cable Repaired.53.333758-6.334224
54Dec 2004East Wall Road - North Wall 38 kVEnvironmental Assessment Underway. Cable Repaired.53.350603-6.210961
53Mar 2005Marrowbone Lane - Newmarket 38 kVEnvironmental Assessment Underway. Cable Repaired.53.336767-6.282069
52May 2005Parkview - Ringsend 38 kVEnvironmental Assessment Underway. Cable Repaired.53.341284-6.208127
51Nov 2005Marina - Trabeg Two 38 kVEnvironmental Assessment Underway. Cable Repaired.51.895938-8.445898
50Nov 2005East Wall Road - McDermot 38 kVEnvironmental Assessment Underway. Cable Repaired.53.357975-8.445898
49Aug 2006Poolbeg - Ringsend TF4 110 kVEnvironmental Assessment Underway. Cable Repaired.53.338319-6.189804
48Dec 2006Blackrock - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.312551-6.201558
47Mar 2007East Wall Road - RingsendEnvironmental Assessment Underway. Cable Repaired.53.341256-6.208134
46Apr 2007East Wall Road - McDermott 38 kVEnvironmental Assessment Underway. Cable Repaired.53.354678-6.251413
45Aug 2007Francis Street - Inchicore 110 kVEnvironmental Assessment Underway. Cable Repaired.53.334286-6.328249
44Sep 2007Maynooth - Turlough Hill 220 kVEnvironmental Assessment Underway. Cable Repaired.53.043925-6.405978
432008Carrickmines - Pottery Road 110 kVEnvironmental Assessment Underway. Cable Repaired.53.255057-6.177457
42Feb 2008Donnybrook - Pembroke 38 kVEnvironmental Assessment Underway. Cable Repaired.53.322745-6.233559
41Feb 2008Carrickmines - Poolbeg 220 kVEnvironmental Assessment Underway. Cable Repaired.53.302764-6.210796
40Sep 2008Blackrock - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.305472-6.185486
39Oct 2008Francis Street - Inchicore 110 kVEnvironmental Assessment Underway. Cable Repaired.53.334488-6.326322
38Oct 2008Marina - Trabeg Two 110 kVEnvironmental Assessment Underway. Cable Repaired.51.896000-8.445610
37Nov 2008Parkview - Ringsend 38 kVEnvironmental Assessment Underway. Cable Repaired.53.344594-6.228027
36Nov 2008Inchicore - Marrowbone Lane 38 kVEnvironmental Assessment Underway. Cable Repaired.53.338855-6.289258
35Mar 2009Blackrock - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.313043-6.201906
34Mar 2009Francis Street - South King Street 38 kVEnvironmental Assessment Underway. Cable Repaired.53.340878-6.267310
33Apr 2009Francis Street - Camden Row 38 kVEnvironmental Assessment Underway. Cable Repaired.53.340776-6.267908
32Sep 2009Harold's Cross - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.334039-6.245266
31Nov 2009Inchicore - Marrowbone Lane 38 kVEnvironmental Assessment Underway. Cable Repaired.53.337618-6.299221
30Jul 2010Francis Street - Inchicore 110 kVEnvironmental Assessment Underway. Cable Repaired.53.336143-6.312076
29Feb 2010Unidare - Whitehall 38 kVEnvironmental Assessment Underway. Cable Repaired.53.378532-6.264743
28Nov 2011Pembroke - Ringsend 38 kVEnvironmental Assessment Underway. Cable Repaired.53.342335-6.221777
27Nov 2012Marina - Trabeg Two 110 kVEnvironmental Assessment Underway. Cable Repaired.51.898370-8.446258
26Feb 2019Deansgrange - Sallynoggin 38 VEnvironmental Assessment Underway. Cable Repaired.53.277673-6.140749
25Nov 2009Dodder Rd - Templeogue 38 kVEnvironmental Assessment Underway. Cable Repaired.53.301350-6.289162
242010Blackrock - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.311290-6.200422
23Sep 2011Bedford Row - Francis Street 38 kVEnvironmental Assessment Underway. Cable Repaired.53.343645-6.270828
22Mar 2012Finglas - Merville 38 kVEnvironmental Assessment Underway. Cable Repaired.53.382100-6.291527
21Oct 2012Carrickmines - Poolbeg 2012Environmental Assessment Underway. Cable Repaired.53.279337-6.197939
20Apr 2013Bedford Row - Sheriff Street 38 kVEnvironmental Assessment Underway. Cable Repaired.53.347433-6.256866
19Jun 2014Inchicore - Marrowbone Lane 38 kVEnvironmental Assessment Underway. Cable Repaired.53.339390-6.288288
18Nov 2014Francis Street - Inchicore 110 kVEnvironmental Assessment Underway. Cable Repaired.53.334060-6.331711
17Nov 2014Francis Street - Harold's Cross 110 kVEnvironmental Assessment Underway. Cable Repaired.53.329019-6.275493
16Jan 2015Unidare - Whitehall 38 kVEnvironmental Assessment Underway. Cable Repaired.53.376833-6.255391
15Feb 2015Finglas - Merville 38 kVEnvironmental Assessment Underway. Cable Repaired.53.396590-6.305482
14Mar 2015Deansgrange - Sallynoggin 38 kVEnvironmental Assessment Underway. Cable Repaired.53.277900-6.140296
13Apr 2015Dodder Rd - Templeogue 38 kVEnvironmental Assessment Underway. Cable Repaired.53.298177-6.304365
12Jun 2015Carrickmines - Poolbeg 220 kVEnvironmental Assessment Underway. Cable Repaired.53.279337-6.197939
11Aug 2015Clontarf - East Wall Road 38 kVEnvironmental Assessment Underway. Cable Repaired.53.364212-6.227787
10Aug 2015Kingsbridge - Watling Street 38 kVEnvironmental Assessment Underway. Cable Repaired.53.346557-6.291474
9July 2016Inchicore - Poolbeg Two 220 kVEnvironmental Assessment Underway. Cable Repaired.53.331239-6.257446
8Sep 2016Carrickmines - poolbeg 220 kVEnvironmental Assessment Underway. Cable Repaired.53.337445-6.219208
7Feb 2018Inchicore - Poolbeg One 220 kVEnvironmental Assessment Underway. Cable Repaired.53.335496-6.263595
6Aug 2018Ballymun - Fairview 38 kVEnvironmental Assessment Underway. Cable Repaired.53.377131-6.256703
5Aug 2018Ballymun - Fairview 38 kVEnvironmental Assessment Underway. Cable Repaired.53.376361-6.252690
4Nov 2018Dodder Rd - Templeogue 38 kVEnvironmental Assessment Underway. Cable Repaired.53.299966-6.285522
3Nov 2018Harold's Cross - Ringsend 110 kVEnvironmental Assessment Underway. Cable Repaired.53.333733-6.246258
2Feb 2019Fairhill - Kilbarry 38 kVEnvironmental Assessment Underway. Cable Repaired.51.906636-8.481197
1May 2019Camden Row - Newmarket 38 kVEnvironmental Assessment Underway. Cable Repaired.53.336498-6.266710
Note: S4 (Step 4) - Notification of actual leak location; S5(C) (Step 5(C)) - Cable physically repaired

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