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There have been a number of failures of SADTEM Voltage Transformer (VT) over the past 6 months.
On Saturday 5th September 2020 a 25kV SADTEM BBY2 Voltage Transformer (VT) catastrophically failed at Finnieston Mid-point Traction Switching Location (MPTSL).
On Wednesday 12th August 2020 a 25kV SADTEM YE7 Voltage Transformer (VT) catastrophically failed at Filton Mid-point Auto Transformer Site Location MPATS.
In both incidents debris from the exploded VTs were found inside the compound and some minor debris found outside adjacent to the compound. While these failures are being investigated with the manufacturer, access to traction distribution sites with 25kV ABB FSKII Structure Mounted Outdoor Switchgear (SMOS) with SADTEM VT, is now restricted.
Immediate action required
Access to any 25kV ABB FSKII SMOS sites with SADTEM VTs, whether by Network Rail staff or Contractors, shall require the site to be established as safe by carrying out the actions specified in NR/SIN/194.
Actions specified in NR/SIN/194 shall be completed and must be submitted to and endorsed by a Route Asset Manager (E&P) / Regional Asset Manager (E&P) or delegates, or Designated Project Engineer (DPE) in advance of accessing a site.
This temporary change applies until further notice, until this instruction is withdrawn or superseded.
Click here to download and read the full safety advice document.
Immediate action required
Access to any 25kV ABB FSKII SMOS sites with SADTEM VTs, whether by Network Rail staff or Contractors, shall require the site to be established as safe by carrying out the actions specified in NR/SIN/194.
Actions specified in NR/SIN/194 shall be completed and must be submitted to and endorsed by a Route Asset Manager (E&P) / Regional Asset Manager (E&P) or delegates, or Designated Project Engineer (DPE) in advance of accessing a site.
This temporary change applies until further notice, until this instruction is withdrawn or superseded.
Click here to download and read the full safety advice document.
