Immediately after the loss of power to the signalling equipment was first reported, a replacement generator was procured from Sudbrook Pumping Station (Severn Tunnel).
Yn syth ar ôl clywed am golli’r pŵer i’r cyfarpar signalau, aethpwyd ati i gaffael generadur arall o Orsaf Bwmpio Sudbrook (Twnnel Hafren).