Permanent Way Maintenance in Autumn Lewisham Extension

Permanent Way Maintenance in Autumn Lewisham Extension Senior Project Manager Background

Extension to Bank opened in 1991 Extension to Beckton opened in 1996 Extension to Lewisham opened in 1999 Extension to City Airport opened in 2005 Extension to Woolwich Arsenal opened in 2009 Extension to Stratford International opened in 2011 The Lewisham Extension

Building the Lewisham Extension Management and Service Delivery 1996 - 1999 of the DLR 2014 - 2021

Finance Bonds, Government Grants, Local councils – Lewisham and Greenwich, Shareholder loans DLRL Client

CGL Rail Special service vehicle

CGLR KAD Concessionaire Franchisee

Subcontractor Subcontractor John Mowlem Mitsui Nishimatsu The Team at CGL Rail The PWAY Team and Resourcing

Technical and Engineering support Consultants: Senior Project Asset and 3Teez Consultants Manager Operations Manager & Mott MacDonald

PWAY Maintenance Projects Site Maintenance Site Maintenance Site Contract - KAD Manager Manager Manager

Engineers Inspection, Sub contract resource Team of 2 skilled Team of 2 skilled track Supervisors Inspection, teams people people Ultrasonic testing, Dye GPX, Cleshars, Kelbray Pen testing of Crossings, Points and crossings inspections, transitions survey, Buffer stop maintenance Features of the Lewisham Extension

Viaduct Bore Cut and Cover Sub-surface Stations Features of the Lewisham Extension – System plan Seasonal preparedness on the Lewisham Extension

Summer preparedness plan Pre season Maintenance – 01 April May - September

Spring Summer

Winter Autumn

Winter preparedness plan Enacted between August – 01 November – 28 February October CGLR Winter Preparedness Plan

• Point Heater maintenance • Expansion Joint maintenance (Scarf type) • Expansion Joint Maintenance (Structural Type) • Check ballasted sections of track • Conductor Rail Maintenance • Pumps Maintenance Point Heater Maintenance

Cartridge heaters • Point heating equipment is located on the 13 point ends on the located on the clamp LEX lock mechanisms • Control equipment is located in the SER’s at Greenwich and trackside at Lewisham and Mudchute • The point heating system is designed to turn on automatically when the temperature falls below 4°C • A manual override switch for the system is available at the DLR Control Centre.

Strip heater elements clipped to stock and switch rails

Control Cabinet Electrical control cubicle Transformers Expansion joint maintenance (Scarf type)

• There are 19 expansion joints located on the LEX • Expansion joints are disassembled and reassembled during maintenance. • The components and rails are checked and replaced if needed. • The position of the sleepers and position of foot of the blades are checked. • The rail is lubricated once split. • Clamp plates are disassembled and reassembled. • The strapping channels are securely fixed. • Check rail flangeway clearance is checked 44mm (+4/-1). • The is checked ( Gauge, , Twist, Top and Line). • Rail blade gaps and overlaps are checked relative to temperature. Expansion Joint Maintenance (Structural Type)

• There are 8 structural expansion joints located on the viaduct. • Check the free moving section for loose rail clips and pads. • Check alignment of the rails and check the rail is free from lipping. • Lubricate the expansion joint rails, baseplate contact surfaces, spring clip blocks and bolts. Conductor Rail Maintenance

• A 750v dc power system is used on the DLR network. • Conductor rail shroud is checked for loose displaced or damaged covers. • Sample checks of conductor rail wear. • Inspection of insulators arms for damage or deflection. • Cable termination locations inspected for signs of overheating. • Lug securing bolts torqued to 150Nm. • Cables and termination conditions checked. • Measure and check expansion gaps. • Ramp geometry wear checks Check ballast levels through the ballasted sections of track

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• • Ballasted sections of track are located between Boundary – Mudchute Station, Greenwich Station and North Viaduct, South of Deptford – Elverson and Lewisham S&C. • Ballast levels in the cribs are checked. • The shoulder heights should be above 125mm above sleeper levels and 450mm width. • Checks for evidence of voiding. Pumps Maintenance

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• • There are 7 sump pump locations on the Lewisham Extension.

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• Sump Pumps are located at Lewisham, Brookmill Park, and at several locations in the Thames tunnel. • Maintenance of the sump pumps involves, electrical insulation testing, checking the SCADA sump levels indications are operating correctly, checking valves and non return valves. • Pumps are removed from the sumps and cleaned, impeller movement is checked and the inlet is checked for obstruction.

Pump Control Cabinet located at Cross Passage Sump - Thames Tunnel Cross Passage – spare pump Cross Passage Pump - Power supply panels Cross Passage – Thames Tunnel Vegetation control

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• • Heavy vegetation on the Lewisham Extension is encountered at Mudchute and between Deptford Bridge and Elverson Road • During the autumn months leaves are cleared from the track by the litter patrol team. De-icing Materials and Chemicals

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• • Procurement of de-icing supplies for conductor rails, switch and crossings, platforms, walkways, , footbridges and car parks. • All supplies are checked. • Various forms of Kilfost gritting and ice melting materials are used. • Supplies of tools and dispensing equipment are also checked. Challenges of Autumn 2017 - Thames Tideway Project

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• • Preparation for Thames Tideway sewage tunnel work Challenges of Autumn 2017 - Delkor Alt 1 Baseplate Replacement Project

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• • New Delkor Alt 1 baseplate system installed on the Viaduct between Greenwich and Deptford Bridge.

SG1 Type baseplate Vanguard baseplate Delkor Alt 1 baseplate Challenges of Autumn 2017 – Planning the replacement of Lewisham crossings Challenges of Autumn 2017 – Planning the replacement of Lewisham crossings In conclusion ….