October 2017 Dave Lovell Programme Manager @ networkrailwest - - PowerPoint PPT Presentation

October 2017

Dave Lovell Programme Manager @networkrailwest

Organisational Update Paul Stanford - RDD Simon Roberts - PCM Peter Corneck - PCM Stuart Hitch

Head of Engineering

Suzanne Renton

Head of Prog Integration

Simon Roberts – SPM SP&C Dave Lovell – SPM Enhancements Anthony Bolton – SPM WRaTH Scott Pillinger – SPM B & C

PDSW Update Suzanne Renton

CP6 Statement of Funds Available…announced last week

CP6 Statement of Funds Available…announced last week, so what? 47.9 billion pounds – 24% more than the CP5 amount Of the 47.9 billion, there is 18 billion for renewals The amounts will be refined during the regulatory process By summer 2018 there will be detailed draft amounts for the 2019 to 2024 period for consultation but Network Rail Board sighted that dialogue with the supply market needs be underway Budgets will be set at route level, as part of devolution of accountability and authority to routes The regulatory process will conclude with a final determination in October 2018 Work has started with Route Asset Managers

Ex2NA The story so far…

The vulnerable coast…

‘Critical resilience of this iconic railway line’

The vulnerable coastline… “We cannot accurately predict when a failure will occur, it may be tomorrow, next year or in 10 years, what we do know is that the cliffs will fall again and the sea wall will collapse”

Year Severe Event Likelihood Extreme Event Likelihood 2014 1 in 3.5 years 1 in 25 years 2065 1 in 0.75 years 1 in 4 years 2115 1 in 0.38 years 1 in 1.5 years

Severe Event: 2-7 day closure of the railway line Extreme Event: Several month closure

• f the line; similar to events in 2014

Work undertaken since 2014

Following 2014 events NR spent £45-£50m on putting the railway back and an additional £20m of tactical strengthening close to the breach NR commission a £3m study at the end of 2014 which included a detailed engineering study, Drone Surveys, Ground investigations and Roped access surveys

The study area: Exeter to Newton Abbot

Preferred option: Section 3

Section 3: Kennaway Tunnel to Parsons Tunnel

Preferred option: Section 3

Section 3: Kennaway Tunnel to Parsons Tunnel

• Action required Immediately and also CP7 & 12. Existing sea

defences will become vulnerable as sea levels rise, primary hazard is the geotechnical hazard from rock falls

• Options Consist of: New mass concrete sea wall, Rock revetment,

and Tunnel portal protection (rock fall protection)

Preferred option: Section 3

Section 3: Kennaway Tunnel to Parsons Tunnel

Preferred options: Section 4

Section 4: Parsons Tunnel to Teignmouth

Preferred options: Section 4

Section 4: Parsons Tunnel to Teignmouth

Action required Immediately. Existing sea defences will become vulnerable as sea levels rise, primary hazard is the geotechnical hazard Two plausible solution to achieve resilience in this area….. Preferred option consists of: Realigned railway from geotechnical hazard; new rock revetment to protect reclaimed land; stabilisation of cliffs

Preferred options: Section 4

Section 4: Parsons Tunnel to Teignmouth Short list options – “Advance the Line”

Preferred options: Section 4

Section 4: Parsons Tunnel to Teignmouth Short list options – “Advance the Line”

Discounted option: Section 4

Section 4: Parsons Tunnel to Teignmouth Short list options – Cliff Regrade

Since October 2016:

The results of the Geo-Environmental Review are launched at Dawlish Warren

• n 17 November 2016

October – November 2016: drop-in sessions for the public are held. Events take place in Dawlish Warren, Exeter, Teignmouth, Torquay, Plymouth and Truro. Nearly 1,000 people attend.

20 October 2016: Secretary of State for Transport Chris Grayling visits Dawlish “There is no option for the future that allows our railway links to Devon and Cornwall to be cut […] That has to be an absolute commitment from the government. We can't leave this railway link in a position where it is not open for the future.”

17 November 2016: £10,000,000 given to ongoing study works (on top of £5,000,000 already made available.”

Section 2 – Our proposal

Project Delivery

The next phase of development is divided into three packages: Marine Parade [new section of sea wall between Kennaways Tunnel and Dawlish Water] Work to be undertaken includes:

• Ground investigation / structural

assessment of site and wall

• Environmental surveys
• Outline design for new wall and

drainage

• Tenders will be issued summer 2017
• Contract awarded early 2018
• Contract duration approx. one year

Project Delivery

Package 1 – Marine Parade [new section of sea wall between Kennaways Tunnel and Dawlish Water]

Project Delivery

Parson’s Tunnel Portal Protection [new rockfall shelter] & CBU 17. Work to be undertaken includes:

• Ground investigation of site
• Environmental surveys
• Outline design for rockfall

Shelter and cliff stabilisation

• Tenders to be issued

summer 2017, contract award early 2018.

• Contract duration approx one

year

Scheme Concept Development: Geotechnical

Proposed Intervention Works: Section 3 (Cliff Behaviour Unit 17) – Parsons Tunnel portal extension works and a rock anchor / netting system is to be developed.

Project Delivery

Parsons Tunnel to Teignmouth [railway on reclaimed land] Offshore ground investigation Environmental Impact Assessment Options for type of defence structure (wall vs revetment vs hybrid) Outline design for new sea defence structure Development of construction methodology & programme, highlighting logistical issues and key risks Tenders to be issued September 2017 Contract award spring 2018. Contract duration approx 16 months

Scheme Concept Development: Geotechnical

The recently completed geomorphological studies and ground investigations have identified that 2 sections of the Sea Cliff need to be prioritised in CP6. These 2 Sections encompass a discrete section of rock cutting within Section 3 located at the northern end of Parson’s Tunnel (designated as Cliff Behaviour Unit 17) and all sea cliffs within Section 4.

Scheme Concept Development: Geotechnical

Proposed Intervention Works: Section 4 (Parsons Tunnel to Teignmouth) – Land reclamation and stabilisation of the sea cliffs by rock anchoring and netting and the construction of buttresses.

Project Delivery

Package 3 – Parsons Tunnel to Teignmouth [railway on reclaimed land]

Scheme Concept Development: Offshore

No specific offshore structures will be constructed as part of the proposed resilience works. However, the following surveys / studies will be incorporated into future phases of work:

• Hydrodynamic Studies (Tidal Studies)
• Wave Studies (HR Wallingford)
• Benthic Surveys
• Topographical & Bathymetric Surveys

Communicating with Stakeholders

Communication with MPs

Annual updates to APPG on South West Rail – more frequently if requested, plus ad hoc meetings when significant events warrant

Communication with MPs

Direct one-to-one or email updates to individual MPs, either when significant moments in the programme are passed (funding announcements, strategic plans etc) or more frequently when significant work packages are underway

Communication with Local Authorities and the PRTF

PRTF will be our primary point of contact for major announcements, joint statements etc. We will support all Local Authorities & LEPs and work with them for issues which affect specific areas and local concerns (see also Communications with Communities and Individuals).

Ex2NA Team

A2CO Changes 3 8

Project Manager Senior Project Engineer Civils (DPE) Coastal Engineer Geo-Technical Engineer Consents Manager Environmental Specialist Commercial Manager Construction Manager Scheme Project Manager Scheme Project Manager

@networkrailwest

Thank you

Any questions?