- Installation of concrete bunded areas around substation doors (if access was required during a flood an independent sump with a pump float and a non-return valve was installed to stop any water egressing into access point).
- Installation of heavy duty security and flood rated doors (where access was not an issue)
- Cable troughs were filled with either concrete, masonry, or steel
- Installation of approved duct sealing system into cable troughs
- All masonry checked and repaired so there were no weak areas for water to get into the cavity
- All weep holes, vents etc were raised above the flood level
- All outlet pipes, foul, surface water, etc. were checked for airtightness, repaired if required, and non-return valves set
- Roof and guttering repairs where required
- Pumps set in substation basements with the outlet above the high flood level externally