TESCO has now confirmed that it was joint failure on a transcritical CO2 refrigeration system that caused the 'explosion' at the Tesco Extra supermarket in Walkden, Greater Manchester, yesterday.
A Tesco spokesman told ACR News: 'An examination of all the other joints in the store has been carried out and the offending joint has been sent off for examination.' He was, however, unable to confirm rumours that Tesco was reconsidering its planned roll-out of CO2 technology.

The incident on Sunday afternoon led to the evacuation of the store and a number of people were treated for minor injuries.

The 116,000ft2, £25m store at the Ellesmere Centre was opened at the end of September.