eastdyke
Established Member
I am pleased that gas does not appear to have been involved.
Nonetheless condolences to those that may have been hurt.
Nonetheless condolences to those that may have been hurt.
Gas was involved,the manholes down Nantwich road blew out of the road.I am pleased that gas does not appear to have been involved.
Nonetheless condolences to those that may have been hurt.
Gas was involved,the manholes down Nantwich road blew out of the road.
It was caused by a electrical surge which some how ignited gas.
National Grid are there now
sleeper is on time and expected to call right now... I'm slightly disappointed. I was looking forward to a Manchester drag
Hope the man and woman get better - can't be nice, burns and all..
Electrical faults on older cables usually occur at 'joint boxes' where two sections of cable are joined or a branch cable goes off. These boxes are filled with bitumen to insulate the joint and keep out the damp.
If a faulty joint develops, the bitumen is heated by the heat at the faulty joint, melts and eventually starts boiling off producing flammable vapour. This can travel through the ducting the cables run in. Eventually the joint fails, there is a large spark and the bitumen vapour ignites/explodes wherever it has travelled to!
So it is a 'gas explosion' but it is entirely due to an electrical problem, hence the confusion that can arise when reporters with no scientific knowledge make their reports.
Modern cables use modern joint boxes filled with a setting resin. This gives much better protection to the joint (so it's less likely to fail) and if heated by a fault doesn't produce much flammable vapour.
Another thank you for explaining how it happened.Electrical faults on older cables usually occur at 'joint boxes' where two sections of cable are joined or a branch cable goes off. These boxes are filled with bituman to insulate the joint and keep out the damp.
If a faulty joint develops, the bituman is heated by the heat at the faulty joint, melts and eventually starts boiling off producing flammable vapour. This can travel through the ducting the cables run in. Eventually the joint fails, there is a large spark and the bituman vapour ignites/explodes wherever it has travelled to!
So it is a 'gas explosion' but it is entirely due to an electrical problem, hence the confusion that can arise when reporters with no scientific knowledge make their reports.
Modern cables use modern joint boxes filled with a setting resin. This gives much better protection to the joint (so it's less likely to fail) and if heated by a fault doesn't produce much flammable vapour.