School gives lesson in new patch uses

Two leakage repair products have been used in unusual ways to achieve a quick, cost-effective fix to a defective sewer pipe at a school in Wales.

SealGuard II rapidly expands to fill a void, preventing water entry instantly

SealGuard II rapidly expands to fill a void, preventing water entry instantly

Recent alterations at the school had highlighted issues with the condition of a private foul line. Particularly, the school was left with unacceptable, foul smells at the pipe emanating from macerated fluid from a septic holding tank.

Following a detailed inspection and liaison with the Local Authority, it was agreed that the existing 150mm clay pipe should be lined with a 110mm flexible UPVC duct. It was confirmed that there would be no issue in reducing the pipe bore under the school and returning it to its full 150mm diameter at the next live chamber.

Pipe Doctor no-dig patch repair was used to create a smooth transition between the original and new pipes

Pipe Doctor no-dig patch repair was used to create a smooth transition between the original and new pipes

The key challenge for this particular solution was to ensure that the new ducting was properly secured to the current sewer line, with no possibility of seepage into the void between the two pipes, which could cause further issues.

Lee Davidson, Director of Elite Pipeline Services, who carried out the works, takes up the story. “We pulled the 110mm pipe through the existing 6 inch clay pipe via a disused manhole within the property and used a Pipe Doctor kit to join the 110mm pipe to the 6 inch pipe in the upstream manhole, where the waste enters. In the downstream manhole, we used the SealGuard II product to seal between the 4 inch and 6 inch pipe to great effect,” Lee explained.

The Pipe Doctor no-dig patch repair system and SealGuard II are both available exclusively from Source One Environmental in the UK & Ireland. For more information, please call 01226 397015 or visit: www.s1e.co.uk