Southampton Link Main — Hampshire

UXO Watching Brief | Water-Main Installation | Reservoir Infrastructure

Project duration: ​10 working days over two weeks

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Project Overview

UXOS provided two weeks of subcontract UXO watching-brief support during water-main installation works associated with Southern Water’s Southampton Link Main scheme in Hampshire.The wider project connects Otterbourne Water Supply Works with Yew Hill reservoir and onward to Rownhams, supporting improved water-supply resilience across the region. Our involvement focused on monitoring excavations during installation of the new mains, providing specialist UXO support alongside the construction team.

Scope ​of Works

UXO Watching Brief During Excavation

The assignment involved maintaining a UXO watching brief during mechanical excavation for the new water mains. Excavation activities were monitored for evidence of historic military ordnance and associated explosive remnants as the ground was progressively exposed.The work required close attention to the excavation process within an active pipeline construction environment.

Support to Pipeline Installation Works

Watching-brief attendance supported the groundworks associated with pipeline installation, including trench excavations along the working route.UXOS worked alongside the construction team, providing specialist observation as excavation progressed and helping maintain awareness of potential UXO hazards during intrusive activities.

On-Site UXO Risk Management Support

Our attendance provided an on-site UXO specialist able to recognise suspected ordnance and advise on the appropriate response should a potential item be encountered.The role supported the project’s UXO risk-management arrangements throughout the assigned works, with watching-brief cover delivered over 10 working days.

Ordnance encountered

No UXO was identified during the monitored works.UXOS completed the two-week watching-brief assignment, providing specialist cover during the allocated pipeline excavations.This outcome relates to the works monitored during our attendance and does not constitute UXO clearance of the wider project site.

Project Experience and Significance

The assignment demonstrates UXOS experience in supporting water-sector infrastructure projects, integrating specialist UXO watching-brief services with ongoing utility installation works.Pipeline construction involves progressive excavation across changing ground conditions. Specialist attendance supports the construction team in recognising and responding to potential UXO hazards throughout the monitored activities.

Delivery Relationship

UXOS undertook the work on a subcontract basis, providing UXO watching-brief support during water-main installation on Southern Water’s wider Southampton Link Main scheme.

Planning Similar Works?

UXOS provides specialist UXO watching-brief support for pipeline installations, utility trenches, civil engineering and infrastructure projects throughout the UK.