Rail and Underground Panel
Date:
10 July 2014
Item 8:
Overnight Ballasted Track Renewals
This paper will be considered in public
1
Summary
1.1
The accompanying presentation provides details of the Overnight Ballasted Track
Renewals that are undertaken on the London Underground network.
1.2
The presentation highlights:
(a)
the objectives of the programme;
(b)
the status of the project;
(c)
examples of work which has been undertaken in engineering hours;
(d)
the future proposals for works of this nature;
(e)
undertaking drainage works in engineering hours;
(f)
the London Underground future Access Strategy; and
(g)
the developments being undertaken to further improve the programme.
2
Recommendation
2.1
The Panel is asked to note this paper and presentation.
List of appendices to this report:
Appendix 1: Presentation
List of Background Papers:
None
Contact Officer:
Number:
Email:
David Waboso, Capital Programmes Director, Rail and Underground
020 3054 8228
david.waboso@tube.tfl.gov.uk
1
Appendix 1
Overnight Ballasted Track Renewals
Presentation to Rail and Underground Panel
10 July 2014
1
MISSION
‘To renew track on the surface and sub-surface network without closures’
OBJECTIVES
• Develop methodologies for delivery of ballasted track renewal (BTR)
without affecting passenger service
• Develop a programme of overnight delivery projects as part of the ongoing BTR workbank
• Enable corporate objectives of;
• Track Access Strategy – reducing weekend closures
• Night Tube
• Access Transformation – maximising available working time and
reducing unit rate.
2
PROJECT STATUS OVERVIEW
• Delivery Team established and developing as programme grows
• 2 x methodologies developed – mini excavators and DISAB
• Four projects completed saving 3-4 weekend closures
• 222m re-ballast Buckhurst Hill
• 134m re-ballast
re ballast Leytonstone
• 283m BTR Leytonstone
• 73m re-ballast High Street Kensington
(S b S
f
)
(Sub
Surface)
• Two concurrent projects in progress
• Ealing Common 230m BTR
• Acton Town 221m BTR
3
BUCKHURST HILL TO WOODFORD JCN – 222m Re-Ballast
• Completed 5 March
• Best production shift = 10.3m
• Typical available working time 2hr
15min (reduced due to Rail Adhesive
Train)
• Zero overruns
Method –
• Excavation by mini –excavator
• Install Geotextile
• Backfill new ballast by Road Rail Vehicles with trailers and ballast box
• Manual compaction
• 2 x follow up tamps
4
LEYTON TO LEYTONSTONE - 283m Re-ballast
•
•
•
•
Completed April 2014
Best production shift = 22m
Typical available working time 3hr
Zero overruns
5
LEYTON TO LEYTONSTONE – 134m Full BTR
Bullhead to Flat-bottom rail conversion
•
•
•
•
Completed April 2014
Best production shift = 22m
Typical available working time 3hr
Zero overruns
BTR Method
• Re-rail to flat-bottom utilising
NTF390 temporary baseplates.
• Weld and stress site
• Change sleepers to new concrete 1502 during reballasting process.
6
BAYSWATER TO HIGH ST KENSINGTON
• First DISAB site for project
• Scope = 73m Re
Re-ballast
ballast only
• Delivery of site fully completed
22nd May
• Best production shift = 7
7.3m
3m
• Enabling works allowed full BTR
scope to be delivered in one
weekend possession
• Zero overruns
7
ACTON TOWN TO SOUTH EALING
• First full BTR site for project
using DISAB
• Scope
p = 220m BTR
• Start of second simultaneous
work front
• Complex site – single line
working plus various signalling
equipment complexities
• Typical available working time
2hr 30min
• Zero overruns
8
EALING BROADWAY TO EALING COMMON
• First site for project interacting
with depot
• Scope = 215m BTR
• Best p
production shift = 6m
• Typical available working time
2hr 15min
• Access plant through Ealing
Common Depot
• Zero overruns
9
2014/15
• Plan to be delivering on 3-4 separate work fronts simultaneously by the end
off 2014/15
• 2014/15 Programme – 3km BTR and Re-ballasting potentially over 8
t sites
it
separate
Overnight BTR PROJECT
10
Overnight
g Track Drainage
g
• Overnight delivery of new track drainage started in 2012
• Track Partnership are driving up the volume of overnight drainage
replacement:
• 6
646m
6 o
of new
e ttrack
ac d
drainage
a age in 2012-13
0
3
• 2440m in 2013-14
• 3000m plus in 2014-15
• In addition also completed 4275m metres of drainage reconditioning
with UV lining upgrades last year - mostly overnight.
• Track drainage now being delivered as opportunity works in closures
for other reasons, including track renewal, 125% increased delivery
l t year (10
last
(10,200m
200 vs 8
8,100
100 iin 2012
2012-13)
13)
11
• Access Transformation – “more time on tools”
• Possessions redefined in Rule Book to expand working window at both ends
of traffic day. (Reduced call back and quicker method for taking possessions
an additional half hour.)
• Current times - working with Timetables team all late and early current are
avoided when designing paths around BTR
• Access Transformation – “resource cost reductions”
• Protection – multi-skilling SPC to undertake activities allows for 70% reduction
in contracted protection staff
• Using trains to reduce costs and increase scope
• Plant modifications to maximise efficiencyy ((e.g.
g increased excavator buckets and
additional working lights)
• Compaction improved to achieve greater track quality – introduction of Robel
Vertical Handheld tampers
12
London Underground's Future Access Strategy
Network periphery:
Weekend or major closures are possible.
Central London:
Closures very rare.
Closures only granted for work that cannot be
delivered overnight.
Inner suburban:
Closures accepted only for work that cannot
be delivered overnight or where central
London train frequencies are unaffected
‘Central London’ to include Piccadilly line service to Heathrow
13
2014-15 programme: 3.3km
BCV2028/2049 - Leyton to Leytonstone (417m)
Minidiggers
Completion of first ballasted trial site
SSL2133 - Acton Town to South Ealing (221m)
SSL2021 - Bayswater to High Street Kensington
(73m)
SSL2005 - Ealing Common (230m)
Minidiggers
First site preventing a closure of the Heathrow
service - Underway
DISAB
First site in sub surface - Complete
Minidiggers
Underway
SSL2030 - Stamford Brook to Hammersmith –
(600m)
DISAB
First site on District/Piccadilly four track where large
volumes to deliver
JNP0427 - Hounslow West to Hatton Cross
(624m of 1540m)
DISAB
First site in tunnel on Piccadilly line service to
Heathrow
BCV2160 - Ealing Broadway to West Acton
(528m of 600m)
Minidiggers
JNP0378 - Finchley Road to West Hampstead
(456m of 913m)
Minidiggers
•
Very close to Chilterns with no cable run. Avoids
need for a simultaneous Met/Jubilee/Chiltern (whole
franchise) closure
2015-2020 Workbank – circa 25km
14
Development of future methods
Oct 2013
suction
trialed
3 /h
3m/hr
Jan 2014 mini
diggers/ ballast
boxes
4m/hr
Jan 2014
Automated rail
handling solution
Aug 2014
Gopher 3m/hr
Aug 2014
Slotted bucket
trial Pic Line
20m/hr
Aug 2015
bespoke tamping
units
2018?
April 2014
DISAB implemented
6.5m/hr
2016
MFS & DISAB
125m/shift
capacity
20
15
Overnight Ballasted Track Replacement – the challenge
•
Plant access critical
• Additional investment in access points
• Satellite ‘depot’ sites needed
•
Maximise work times:
• Improved access rules
• Prioritise overnight work
• Last trains always to run on
time, reform service to make
happen
16
Current overnight sites vs Weekend sites on LU
• Minidigger method unit rate – circa double the closure rate (as expected)
• Early days for ‘DISAB’ - essential for future (limited space, buried services)
• DISAB method unit rate – between double and treble cost
• Current DISAB has limited capacity (maintenance tool)
• Mini-digger method more flexible and cost effective than DISAB but cannot
be used in restricted areas
• We will develop methodology then invest in the right equipment – this is
what will deliver low unit rates in future years
• Progress is as expected
• Even at a seemingly high unit rate, cost to London of overnight BTR is lower
LU BTR Delivery vs Others
• UK national rail weekend delivery – similar cost to LU at similar sites
• UK national rail overnight work – longer hours, large machinery, more space
• Paris,
Paris New York – weekend delivery
delivery, similar cost or higher
• Buenos Aires – overnight delivery, high cost, effect on daily service
17