Market Capability Survey: Drainage Inspection and Maintenance

**PLEASE NOT THAT THIS PIN IS ONLY FOR A MARKET CAPABILITY SURVEY AND NOT A CALL FOR COMPETITION**

The requirements

Eastern Region has initiated a project to review the requirements of the Lord Robert Mair drainage recommendations and assess their requirements and the implication on Eastern Region. Several operating models will be proposed and will detail the benefits and risks of each. It will also describe implications on market capabilities, cost etc.

What constitutes drainage inspection

“Drainage inspections gather visible information relating to the structure and performance of the drainage system as well as the parent assets such as earthworks, structures and track.

Drainage inspections have two levels of details:

a) Drainage System Defect Inspection is a basic visual inspection which is also included as part of the Condition Inspection.

b) Drainage System Condition Inspection is the baseline inspection which is required for all drainage assets in order to collect condition data and should cover the drainage system (inflows to outfall).

The My Work App has been created to allow inspection data to be collected consistently and to upload the information into Ellipse. This eliminates the need for paperwork and enables functionality such as Global Navigation Satellite System data recording, photographs, editing attributes and the creation of work arising to be completed quickly and within defined scripts. Whenever possible the use of the My Work App is recommended.

Where more detailed information is required, the inspection should be supported by a survey (see NR/L2/CIV/005/05, Drainage Survey.” (definition in accordance with NR/L2/CIV/005, Module 4, Drainage Inspection, p.7)

What constitutes drainage maintenance

Drainage maintenance, both manual and mechanised, will be undertaken in accordance NR/L2/CIV/005, Modules 11 – 15; and will be specified by the Senior Asset Engineers in the Route Engineering team.

Manual work includes: rodding of pipes, vegetation removal and recutting ditching, replacement of catchpit lids and rings, desilting and repair of culvert headwalls etc.

Mechanised maintenance would be primarily jetting.

Critical success factors

1. measurable condition score improvement;
2. performance improvement re. reduction of TSRs, reduction in flood events, reduction in wet beds/rough ride reports;
3. Earthwork stability
4. Achieve unit rate

Depot Locations per Route

The drainage assets (total number estimated around 150,000) are split across the 4 routes as follows:

East Coast – estimated 19%

North & East - estimated 26%

East Midlands - estimated 17%

Anglia - estimated 38%

East Coast Route Depot Locations

Morpeth

Newcastle

Darlington

Doncaster

Peterborough

Hitchin

London Kings Cross

North & East Route Depot Locations

Hexham

Middlesbrough

York

Knottingley

Leeds

Wakefield

Sheffield

Barnetby

East Midlands Route Depot locations

Bedford

Luton

Derby

Leicester

Nottingham

Lincoln

Anglia Route Depot Locations

Ipswich

Norwich

Romford

Barking

Ely

Tottenham

Please note: The date in section II.3 is the date the PIN will be published as this is just a market capability survey.