9. Engineering challenges
• Variable ground conditions
• 120 year design life
• Dissipate energy and minimise
air entrapment
• Provide mechanical ventilation
and odour treatment
13. Critical periods of transition and certification
Design / Construction phase
System Acceptance
Period (up to 3 years)
System
Commissioning
Commencement
System
AcceptanceHandover
Construction
Start
Licence
Award
August
2015
OCI Period TWUL maintains
MEICA elements
Pre-System (Worksite)
Commissioning Period
Planning
Ready
?
System
Commissioning
Period
TWUL Operates
Integrated CSO System
TWUL Operators begin CSO
System Training
SCCD
Criteria
Certify System
is Ready for
Commissioning
Handover
Criteria
Certify System
is Ready for
Handover
SA
Criteria
Certify System
is Ready for
Acceptance
16. Tideway at a glance
Revenue collection/
operator of Sewer
Network/TWUL Works
Debt Equity
Ofwat Thames Water
100% ownership
Project Licence
Government Support
Package
TIDEWAY
DEFRA
17. Bazalgette Tunnel Limited: trading as Tideway
The new Infrastructure Provider is the first Wastewater only
company in the UK. It is made up of the following shareholders:
The investor group includes a significant proportion of UK pension
funds through which over 1.7 million UK pensioners will have an
indirect investment in Tideway.
18. West - BMB JV Central - FLO JV East - CVB JV
Who is delivering what?
London Clay London Clay/Lambeth Group/Thanet Chalk
Project wide System Integrator (SCADA)
Tideway Delivery Team, NEC Project Manager, Supervisor, System
Commissioning
23. and Tideway PS / CSO
Abbey Mills, Beckton STW,
Tideway PS and Tunnel
Greenwich – Crossness STW
Greenwich –
Deptford – Earl PS
Victoria -
Blackfriars
Albert –
Heathwall PS
Cremorne-Chelsea-
Western PS
West CSOs &
Hammersmith PS
Frogmore
Tunnel &
PS
Integrating with the existing subsystems
24. Interface with Thames Water SCADA
Acton Storm Tanks
Hammersmith PS
Lots Road PS
Falconbrook PS
Heathwall PS
Greenwich PSEarl PS
Abbey Mills PS
Beckton STW
Main works at TWUL sites without TWUL interface
Main works with TWUL interface
39. Normal Operation
Flow from the NLL is lifted by pumps at Station F to enable gravity flow
to join the NOS and flow to Beckton for treatment.
At the moment, if the restriction of flow to the NOS requires alternative
discharge from Abbey Mills, then the river penstocks will open and the
flow diverts to the Channelsea river.
Once the Lee tunnel is operating, those river penstocks will permanently
close and the TTT penstocks will divert flow via the Lee tunnel.
When the TTT is operating and joined to the Lee tunnel to form the LTT
discharge to the Channelsea River will be possible during storm conditions
(or at high levels, -3mAOD)
Abbey Mills
40. Ideally flow travels down the nos, enters Beckton inlet works, gets
treated and the effluent is discharged to river
The nos flow might be combined with flow from Abbey Mills, and
Meanwhile to protect the nos there might also be flow diverting to TTT
If Beckton starts to reach capacity (there is an F5 at the inlet wks) flow
can be diverted to the storm tanks and if necessary discharged to River
(untreated).
If LTT levels at Beckton reach a certain point,, it can discharge to River
via the Tideway CSO (weir).
If Beckton has the capacity, the Tideway PS lifts the TTT flow to the nos
for treatment.
When the TTT is built, there will be discharge point lower than the
Tideway CSO (weir), so this will no longer be used to discharge in storm
conditions.
Instead the Tideway PS flow will be controlled by penstocks so that it
Beckton
41. Cyber Security
Trend Micro published paper in 2013 highlighting the extent to which cyber criminals
are now actively targeting Industrial Control Systems, specifically water plants.
Honey pots were created and within 18 hours attacks started. Over 28 days 39 attacks
from 14 countries were recorded of which 17 would have been catastrophic.
50. “The Great Think” is Tideway’s innovation programme
Can we find our very own 21st Century
Sir Joseph Bazalgette’s?
‘Tideway will deliver a sustainable legacy of innovation by capturing
and sharing our solutions via I3P (Infrastructure Industry Innovation
Platform) to support UK’s Construction 2025 strategic vision’
Innovation in 2017 and beyond?
The Great Think is hosted on ‘i3P’
www.thegreatthink.london
Our innovation legacy commitment:
