Network Rail has re-opened the railway through Coatbridge Sunnyside in Scotland following a train derailment last Friday.

Engineers worked around-the-clock throughout the weekend to rerail the train and repair significant damage to the track.

The team replaced four half switches – moveable sections of track which move trains from one line to another – while specialist ‘tamping’ equipment was also used to re-align other parts of the track.

No-one was injured during the derailment, which happened at around 9.30pm on Friday 6 May, when the train was out of service and travelling at a low speed.

Scotland's Railway route director Liam Sumpter said the team "has worked tirelessly to carry out the necessary repairs to the track and signalling system".

“This was an incredibly complex and demanding recovery process that had to be carried out very carefully," he said.

“The vehicle was removed without further damaging the railway infrastructure, which helped us re-open the route as quickly as possible.

“My thanks go to our passengers and the people of the nearby community for their understanding and patience while we worked to re-open the route.”

It comes after the Rail Accident Investigation Branch's report into the fatal Stonehaven derailment found that drainage construction undertaken by Carillion played a key role.

According to the report, the trench containing a perforated pipe, constructed by Carillion between 2011 and 2012, was at the centre of the enquiry. The pipe was installed as part of a project to address a known problem with drainage and cutting stability at the site.

However, the drainage system and associated earthworks had not been constructed in accordance with the original design and so were not able to safely accommodate the water flows on the morning of the derailment.

Network Rail is also reviewing other projects carried out across its network after RAIB investigators highlighted major gaps in “safety critical” project data.

The RAIB found that more than half of Network Rail project records did not include critical documents similar to those that were found to be missing from the project history of the Stonehaven derailment site.

In its final report, the RAIB reveals that Network Rail's records of the Stonehaven site were missing a health and safety (H&S) file and design drawings in relation to drainage work carried out by Carillion in 2011/12.

Consequently, the RAIB broadened its investigation to look at other Network Rail projects. It found that out of 64 projects sampled, “more than half” were missing a H&S file.

Meanwhile in a sample of 11 drainage projects considered by RAIB, five were not transferred into Network Rail's asset management system.