WALES AND WEST UTILITIES

As part of the upgrade of the A465 Heads of the Valleys Trunk Road, various sections of the route between Merthyr Tydfil and Abergavenny needed to be converted from a three-lane carriageway to four-lane dual carriageway. As a result it is necessary to divert VS001 – Gilwern to Hafodyrynys 450mm Pipeline through Cwm Clydach gorge.

The pipeline was laid down the sides of the gorge and across the A465, Heads of Valley road. The tie-ins were carried out by means of a stopple and bypass arrangement.

> Read more: Heads of the Valleys Diversion

NATIONAL GRID

Matching Green LTS Reinforcement Project

New Above Ground Installation (AGI) adjacent to the existing Matching Green AGI. Works include installation of filters, meters, gas pre-heat equipment and pressure reduction equipment to increase gas linepack storage capacity in the local transmission system. Work scope includes tie-ins in to live high pressure gas system within the existing AGI.

> Read more: Matching Green LTS Reinforcement Project

SCOTIA GAS

Lochgelly TRS Rebuild

The purpose of the project was to construct a new TRS station adjacent to the existing station off the B981 in Lochgelly Fife.

> Read more: Lochgelly TRS Rebuild

NATIONAL GRID

Alrewas Regulator Stream Modification

The purpose of the works was to replace five streams of Fisher V25 valves which were providing pressure regulation. The valves were believed to be contributory to excessive vibration levels on the regulator streams. Fastflow were contracted to remove the existing control valves and replace regulator streams with a volumetric controlled regulator incorporating high and low pressure override.

> Read more: Alrewas Regulator Stream Modification

NATIONAL GRID

Stanlow Minimum Offtake Connection

The purpose of the works was to complete all civil and mechanical aspects associated with a UKD minimum offtake connection (grouted tees) off the 18” Mickle Trafford to Little Stanney HP Pipeline to supply gas to the Stanlow Manufacturing complex, Ellesmere Port, South Wirral.

> Read more: Stanlow Minimum Offtake Connection

NATIONAL GRID

West Midlands Pre-Heater Replacement 2012

Two locations in the West Midlands required their existing gas pre-heating systems to be upgraded, due to them either being undersized for current demand or due to integrity issues.

> Read more: West Midlands Pre-Heater Replacement 2012

NATIONAL GRID

A1073 Spalding to Eye pipeline diversions

This five month, £500,000 project, secured by competitive tender, involved installing - by open cut - around 300m of 900mm diameter high pressure welded steel gas pipeline as part of the service diversion works associated with the A1073 road works.

> Read more: A1073 Spalding to Eye pipeline diversions

NATIONAL GRID

A1(M) high pressure gas main diversion

This six month, £1 million project, secured by competitive tender, involved installing - by open cut methods - around 550m of 750mm diameter high pressure, gas welded steel pipeline.

> Read more: A1(M) high pressure gas main diversion