PLS 2017: Erskine Bridge Electrical and Lighting Refurbishment
•
0 likes•293 views
The presentation is intended to give an insight into the overall project and the technical challenges associated with the £3.7million electrical and lighting refurbishment contract at Erskine Bridge: As an introduction Louis will provide some background into the project and justification for the decision to go ahead with the LED replacement and inclusion of the CMS system. He will then highlight some of the technical challenges which had to be addressed, the solutions which were developed, and explain the reasoning behind some of the decisions taken. This will include elements of the DSEAR Regulations and the need to consider the internal bridge structure as a hazardous area. He will also discuss elements of the buildability issues which were encountered and the development of bespoke products (column baseplates, Aircraft Navigation Lights etc.) which had to integrate with the existing bridge structure and the importance of consideration of safe methods of working at the design and planning stage, and the benefits of implementing these methods when it came to construction stage. Louis will then describe and discuss the various elements of the construction and handover phases, leading to successful completion of the project. Talk by by Louis Fourie BSc (HONS) MIET AMILP, Clayton Fourie Consultancy
Recommended
More Related Content
What's hot
What's hot (20)
Similar to PLS 2017: Erskine Bridge Electrical and Lighting Refurbishment
Similar to PLS 2017: Erskine Bridge Electrical and Lighting Refurbishment (20)
More from Institution of Lighting Professionals
More from Institution of Lighting Professionals (20)
Recently uploaded
Recently uploaded (20)
PLS 2017: Erskine Bridge Electrical and Lighting Refurbishment
- 1. ILP Professional Lighting Summit 14th June 2017 Glasgow Louis Fourie MIET AMILP Director Clayton Fourie Consultancy Erskine Bridge Electrical & Lighting Refurbishment
- 3. 1. Introduction Open 2nd June 1971 by Princess Anne
- 4. 1. Existing Supply Admin Building Dalnottar Substation
- 5. 1. Previous Lighting • The original street lighting consisted of: • 5No high mast units at Admin Building & 15No Twin bracket columns in centre reserve on south approach. • 40No twin brackets in centre reserve across the bridge deck. • 16No high masts north of the bridge. • Two aircraft navigation lights on each tower.
- 6. 1. Previous Electrical Network • Electrical & Lighting network was 45 years old and reached the end of there design life. • The electrical network at the south end started in the switch room inside admin building and ran out to the road through a service tunnel. • At the north end, the supply came from a sub station at Dalnottar Interchange • Cables then ran up the central reserve into bridge and through the bridge via 6No steel ducts • Termination into 16No DB. 8No from north and 8No from south • Admin building in south to mid-span. • Dalnottar in North to mid-span
- 7. 1. Previous Electrical Network Steel duct running threw bridge Steel duct where they are open.
- 8. 1. Original Electrical Network Original Distribution Board Original Distribution Board
- 9. 1. Original Electrical Network Cable entering bridge deck at north abutment T-joint forms mains to DB & Conduit to street lighting
- 10. 1. Original Electrical Network Cable entering bridge deck at north abutment T-joint form mains to DB & Conduit to street lighting
- 11. 1. Original Electrical Network The man rider taking you up to the top of the tower. Great view from the top of the tower
- 12. 2. Design 1. The original high mast units at the admin building were no longer required due to removal of the tolls and were replace with standard road lighting on the verge. 2. The number of lanterns were reduced from 40No to 26No. 3. The twin bracket columns in the center reserve were replaced with opposite columns in the verge. 4. This removed the need for replacing the central reserve barriers comply with latest standards and don’t need double fast lane closers for maintenance. 5. All the new columns were aluminum, passively safe type, fitted with LED lanterns and central management system.
- 13. 2. Design 1. The columns on the bridge deck were replaced with Aluminium columns and required bespoke base plates. 2. Using CIE 115 and BS 5489 & BSEN 13201 we designed the scheme to M3 class 1. Minimum 1.0cd/m2 , Uo>40% 3. The electrical network no longer complied with safety standards 4. The high masts had exceeded their design service life and had to be replaced 5. The columns in the central reserve did not have sufficient clearance to allow the barrier to deflect and operate in the correct manner, thus the new columns were moved to the edge of carriageway 6. We looked at 8no lantern manufactures lantern and found a number of options which would be acceptable. The final choice was proposed by the contractor 7. As per Transport Scotland standards all lanterns would be LED and controlled by CMS.
- 14. 2. Design 1. We decided to split the north and south network into 2No. separate supplies each. One unmetered for street lighting and one metered for everything else. 2. The cable calcs showed that 95mm2 4core + earth cables would be required for new main supply cables. 3. Each circuit is about 1300m in length. 4. After undertaking a Risk Assessment and consultation with the client, the decision was made to install a ATEX Zone 2 equipment inside the bridge deck. This minimises the risk of explosion if there is a build up of vapour inside the bridge following fuel or chemical spill on the bridge. 5. As outside the bridge, all lanterns were LED and furthermore had to be vibration resistant and incorporate emergency back up. 6. The light levels inside the bridge deck are 100Lux average over the central walkway.
- 15. 2. Design 95mm ² 4 Core XLPE/SWA/XLPE + 95mm2 XLPE/SWA/XLPE earth V = 400 volts ELI = 0.35 Ω 2 1 4 TP+N MCCB 64A 80A TP+N MCCB 40A 95mm ²4 Core XLPE/SWA/XLPE+ 95mm XLPE/SWA /XLPE EARTH GS05 SOUTH SIDE BRIDGE TERMINATION PILLAR NEW PILLAR STREET LIGHTING SUPPLY DBL1 95mm ²4 Core LSZH/GSWB/EPR+ 95mm² LSZH/GSWB/EPR EARTH Vd = 4.74 volts ELI = 0.62 Ω METERED SUPPLY TO DB1 GS01 TOLL ADMIN BUILDING UNMETERED LIVE SUPPLY GS05U DBL1 TO DBL8 WITHIN BRIDGE, REFER TO DRG NOS 1/SW/1203/016/ELEC/004 METERED SUPPLY FROM GS02 95mm ²4 Core XLPE/SWA/XLPE+ 95mm² XLPE/SWA /XLPE EARTH METEREDUNMETERED GS02 TOLL ADMIN BUILDING METERED LIVE SUPPLY TP+N MCCB 40A 2 35mm ² 4 Core XLPE/SWA/XLPE + 35mm² XLPE/SWA/XLPE earth AB01 GS03 GS04 TP+N MCCB 40A 3 TEDP DB1 TO DB8 WITHIN BRIDGE, REFER TO DRG NOS 1/SW/1203/016/ELEC/003 95mm ² 4 Core XLPE/SWA/XLPE + 95mm2 XLPE/SWA/XLPE earth 80A 1 HAZARDS AREA ZONE 2 UNMETERED SUPPLY FROM GS02 95mm ²4 Core XLPE/SWA/XLPE+ 95mm² XLPE/SWA /XLPE EARTH V = 0.87 volts ELI = 0.39Ω Vd = 1.72 volts ELI = 0.6 Ω Vd = 2.31volts ELI = 0.69 Ω Vd = 3.6 volts ELI = 0.99 Ω Vd = 1.56 volts ELI = 0.62 Ω V = 400 volts ELI = 0.35 Ω GS05M 35mm ² 4 Core XLPE/SWA/XLPE + 35mm² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm² XLPE/SWA/XLPE earth ELECTRICAL NETWORK SOUTH OF BRIDGE Schematic diagram for Main network from admin building
- 16. 2. Design 16mm²3 core XLPE/SWA/XLPE 16mm² 3core XLPE/SWA/XLPE Vd = 7.58V ELI = 1.63 Ω 16mm²3 core XLPE/SWA/XLPE Vd = 7.58V ELI = 1.63 Ω Vd = 7.52V ELI = 1.61 Ω Vd = 7.58V ELI = 1.61 Ω Vd = 3.29V ELI = 0.89 Ω Vd = 3.29V ELI = 1.1Ω 16mm² 3core XLPE/SWA/XLPE 16mm²3core XLPE/SWA/XLPE 16mm²3 core XLPE/SWA/XLPE 16A Sockets 32A Sockets 16A Sockets 32A Sockets 64A Sockets NAV RAD 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 03 05 04 02 06 07 09 11 10 08 12 1314 01 02 03 04 01 02 03 04 01 02 03 04 01 02 03 04 01 02 03 04 01 02 03 04 01 02 03 04 15 1718 16 1516 1516 15 17 19 18 16 20 21 2324 22 15 17 19 18 16 20 21 23 25 24 22 26 15 1718 16 15 17 19 18 16 20 2122 15 17 19 18 16 20 2122 15 17 19 18 16 20 15 17 19 18 16 20 21 2324 22 15 17 19 18 16 20 2122 15 17 19 18 16 20 2122 S01 S02 S03 S04S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S01 S02 S03 S04 S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S01 S02 S03 S04S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S01 S02 S03 S04 S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S01 S02 S03 S04 S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S01 S02 S03 S04S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S01 S02 S03 S04 S05 S06S07 S08S09 S10 S11 S12S13 S14S15 S16 S18 S20 S22 S17 S19 S21 S18 S20 S22 S17 S19 S21 S18 S20 S22 S17 S19 S21S18 S20 S22 S17 S19 S21 S18 S20 S22 S17 S19 S21 S24 S26 S23 S25 S24 S26 S23 S25 DB1 (in box 79) DB2 (in box 75) DB3 (in box 71) DB4 ( in box 67) DB5 (in box 61) DB6 ( in box 55) GS 02 GS 05M 01 02 03 04 01 03 05 04 02 06 01 03 05 04 02 06 07 09 11 10 08 12 1314 S01 S02 S03 S04 S05 S06S07 S08S09 S10 01 03 05 04 02 06 07 09 11 10 08 12 1314 DB8 (in box 43) Ancilliary apparatus located in box 69 to be re connected to electrical supply. Refer to notes Ancilliary apparatus located in box 58 to be re connected to electrical supply. Refer to notes Ancilliary apparatus located in box 49 to be re connected to electrical supply. Refer to notes DB7 (in box 49) Vd=6.42V ELI=0.83Ω Vd=5.78V ELI=0.75Ω Vd=5.78V ELI=0.9Ω Vd=7.13V ELI=0.74Ω Vd=6.69V ELI=0.85Ω Vd=6.69V ELI=1Ω Vd=8.28V ELI=0.8Ω Vd=6.69V ELI=0.9Ω Vd=6.97V ELI=0.87Ω Vd=8.56V ELI=0.8Ω Vd=6.97V ELI=0.89Ω Vd=6.97V ELI=0.96Ω Vd=7.23V ELI=0.9Ω Vd=7.23V ELI=1Ω Vd=10.6V ELI=0.94Ω Vd=7.23V ELI=1.13Ω Vd=7.58V ELI=0.9Ω Vd=7.58V ELI=1.24Ω Vd=10.95V ELI=0.97Ω Vd=7.58V ELI=1.1Ω Vd=7.92V ELI=0.97Ω Vd=7.92V ELI=1.2Ω Vd=9.82V ELI=0.94Ω Vd=7.92V ELI=1.2Ω Vd=8.65V ELI=1Ω Vd=8.65V ELI=1.27Ω Vd=10.55V ELI=1Ω Vd=8.65V ELI=1.12Ω Vd=8.28V ELI=1Ω Vd=8.28V ELI=1.2Ω Vd=8.28V ELI=1.27Ω Vd=9.65V ELI=0.95Ω 25mm² 4Core LSZH/GSWB/EPR Cable +25mm² earth Cable 95mm² 4Core LSZH/GSWB/EPR Cable +95mm² single Core LSZH/GSWB/EPR earth Cable ACFT NAV RAD WIND CPCCTV 25mm4c25mm4c25mm4c 25mm4c25mm4c25mm4c 95mm² 4Core XPLE/SWA/XPLE Cable +95mm² single Core XPLE/SWA/XPLE earth Cable HAZARDOUS AREA ZONE 2 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 25mm4c25mm4c25mm4c 1 2 3 4 5 6 7 8 9 25mm4c25mm4c25mm4c 1 2 3 4 5 6 7 8 9 25mm4c25mm4c25mm4c 1 2 3 4 5 6 7 8 9 25mm4c25mm4c 1 2 3 4 5 6 7 8 9 25mm4c25mm4c 1 2 3 4 5 6 7 8 91 2 3 4 5 6 7 8 9 25mm4c25mm4c CPCCTV CTRL Schematic diagram for network inside bridge deck Schematic diagram for street lighting south of the bridge
- 17. 2. Design Vd = 6 volts ELI = 0.64 Ω 95mm ² 4 Core XLPE/SWA/XLPE + 95mm2 XLPE/SWA/XLPE V = 400 volts ELI = 0.35 Ω 7 TP+N MCCB 32A 95mm² 4 Core XLPE/SWA/XLPE + 95mm² XLPE/SWA /XLPE EARTH GS07 NORTH SIDE BRIDGE TERMINATION PILLAR NEW PILLAR 95mm ²4 Core LSZH/GSWB/EPR+ 95mm² LSZH/GSWB/EPR EARTH V = 5.5 volts ELI = 0.72 Ω GS08 DALNOTTOR UNMETERED LIVE SUPPLY METERED SUPPLY FROM GS08 95mm ²4 Core XLPE/SWA/XLPE+ 95mm² XLPE/SWA /XLPE EARTH GS08H16 METEREDUNMETERED Vd =4.75 volts ELI = 0.6 Ω TP+N MCCB 32A GS08H13 GS08H14 GS08H15 Vd = 5.95 volts ELI = 0.66 Ω GS08H10 GS08H05 GS08H07 Vd = 8.2 volts ELI = 0.78 ΩTP+N MCCB 32A GS08H11 GS08H12 VMSS2 Vd =6 volts ELI = 0.66 Ω TP+N MCCB 32A GS08H08 GS08H06 GS08H09 VMSS3 TP+N MCCB 32A Vd =1.63 volts ELI = 0.43 Ω GS08H04 1 Vd = 4.52 volts ELI =0.54 Ω GS08H03 GS08H02 GS08H01 TP+N MCCB 32A VMSS4 2 3 4 5 6 Vd = 8.66 volts ELI = 0.8 Ω 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth STREET LIGHTING SUPPLY DBL17 METERED SUPPLY TO DB17 DBL17 TO DBL9 WITHIN BRIDGE, REFER TO DRG NOS 13/SW/1203/016/ELEC/006 DB17 TO DB9 WITHIN BRIDGE, REFER TO DRG NOS 13/SW/1203/016/ELEC/007 HAZARDS AREA ZONE 2 80A TP+N MCCB 80A TP+N MCCB V = 400 volts ELI = 0.35 Ω Vd =6 volts ELI = 0.66 Ω GS07U GS07M 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 35mm ² 4 Core XLPE/SWA/XLPE + 35mm ² XLPE/SWA/XLPE earth 1 ELECTRICAL NETWORK NORTH OF BRIDGE Schematic diagram for network north of the bridge
- 18. 2. Design Tool capable of cutting through steel duct with out damaging cables inside
- 19. 2. Design Step 1 New BT Fibre in duct New Virgin Fibre in duct Traffic Scotland Fibre Electrical Mains Electrical Mains Redundant BT Copper Street Lighting Cable New Traffic Scotland CCTV Traffic Scotland Duct Live Electrical Cable Live Electrical Cable Step 2 Step 4 Step 5 New BT Fibre in ducts New Virgin Fibre in duct Traffic Scotland Fibre New Street Lighting Cable New Traffic Scotland CCTV New Auxiliary Cables Electrical Mains Electrical Mains Redundant BT Copper Street Lighting Cable New Traffic Scotland CCTV Traffic Scotland Duct Live Electrical Cable Live Electrical Cable New Electrical Mains Metered New Electrical Mains Unmetered New Street Lighting Cable New Auxiliary Cables Proposed Steps for removal of steel ducts. New BT Fibre in duct New Virgin Fibre in duct New BT Fibre in ducts New Virgin Fibre in duct Traffic Scotland Fibre Auxiliary Cables Move required cable out of harms way Cut steel duct into small pieces and remove redundent ducts and cables from bridge Install cable ladder in place of the first 3no steel ducts Cut remaining steel ducts and redundent cables into small pieces and remove from bridge structure. Install new cable ladder into space of steel ducts. Move all cables and ducts to first cable ladder Auxiliary Cables New Traffic Scotland CCTV New Electrical Mains Metered New Electrical Mains Unmetered
- 20. 2. Design Specimen design for the new bracket for the LED replacement aircraft navigation lanterns
- 21. 2. Construction For the 95mm2 cable we had to use 200mm⌀ ducts. Purple street lighting duct is 100mm⌀.
- 22. 2. Construction High mast lowered and cut into 4 pieces to be taken from site to licensed recycling plant
- 23. 2. Construction All the bolts in the bridge deck were pull tested and after the new column was fitted sealed with grout to water proof the column base.
- 24. 2. Construction New LED Lantern fitted with CMS nodes , show the uniformity achieved on the approach road and in the compound.
- 25. 2. Construction The uniformity achieved on the approach road north of the bridge using high mast units.
- 26. 2. Construction New LED Zone 2 lighting inside the bridge deck
- 27. 2. Construction The new Zone 2 DB and new cable ladders with electrical cable and coms cable separated.
- 28. 3. What was achieved. 1. Environmental impact. 1. The new lighting installation has reduced the energy by 70% energy (£50K per year) 2. Over £3K reduction in carbon tax per year. 3. 20% material was recycled dusring the course of the project. 2. The contract was completed on budget and on time.
- 29. 4. Thanks to 1. Transport Scotland Bridges section 2. Scotland Transerv for managing the contract. 3. Lightways Contracting
- 30. 5. Questions
- 31. Finished!Finished!Finished!Finished! Louis Fourie CEng MIET MILP Clayton Fourie Consultancy Ltd Tel: 07906664770 Email: louis@claytonfourie.com