FA08-03 - SEWERAGE REPAIR AND MAINTENANCE

The Client is looking to either appoint one Contractor (full Northumbrian Water Operating region) or two Contractors (one in the North and one in the South of the Northumbrian Water Operating Region) to deliver reactive sewerage repair and maintenance services.

The scope includes, but is not limited to, reactive repairs and maintenance (including alterations and enhancements) of approximately 30,000km of the Client's sewerage network. This includes reactive attendance to all customer reported issues and subsequent maintenance.

The services will largely be reactive emergency services in response to customer contacts and other short-term work where there is an immediate and repeated adverse impact on customer service or other serviceability measures.

This entails the provision of 24/7/365 emergency call out cover for all customer reported issues which could include:

• Internal, external, highway and other flooding
• Pollution
• Odours
• Blockages
• Collapses

-Dangerous manholes

The Client's in-house Technical Support team will attend the majority of flooding contacts and all reported pollution contacts as well as any others deemed necessary alongside the crew to oversee the resolution of the issue, complete root cause analysis and communicate with the customer. Investigations undertaken will often include looksee CCTV, dye testing, locating manholes, cleansing, root cutting and proactive mapping.

Following the initial reactive attendance further remedial or investigation work may be required this may include:

• Further investigation encompassing network tracing, dye testing
• CCTV including probe and mark
• Sewer cleansing
• Ultra high-pressure jet cutting or use of specialist cutting equipment such as Picote, Bladder or robotic cutters
• Root cutting
• Drawdowns
• Rod retrievals

Any activity which identifies as causing a potential risk of flooding from operations, all employees must follow strict mitigation procedures outlined by the Client, this may include:

• Bunging connections
• Wrapping toilets
• Venting manholes
• Drawdowns
• Use of alternative methods such as rodding

If required sewer repairs are undertaken, this may include:

• Dig down repairs
• Emergency burst rising main repairs
• Trenchless patch or lining repairs
• Pipe bursting
• Minor building over sewer diversions
• New manholes, manhole repairs, manhole cover and frame replacement and/or repairs
• Manhole trap removal
• Minor pipe-bridge & sewer outfall repairs

In any instance where a repair disrupts or damages the ground surface this area will be replaced like for like.

Other services where required may include, but are not limited to:

• Large clean ups which may involve removal of contaminated material
• Vegetation clearance
• Landscaping
• Pump hire and overpumping hire and set-up
• Security
• Site set-up activities which may include provision and installation of track mats etc
• Provision and installation of pollution mitigation measure such as straw bales and booms
• Specialist CSO maintenance services
• Fabrication and installation of specialist ironworks such as penstocks or gattic covers

Contractors(s) will be required to use the Client's apps and systems. They will be required to follow processes for updating these and recording asset information.

All planning and necessary customer service activity is to be undertaken by the Contractor(s).

NWL will either award to Lot 1 and 2, or Lot 3 only. This will be assessed using an objective mechanism which will be detailed in the tender documents.