KHIA headerKnow-How in Action


Belzona® Solves Corrosion Leaks On Transformer Lv Turret



Power (POWR)



Tanks and Chemical Containment Areas (TCC)


Customer Location:

Electricity Substation, South Coast, UK


Application Date:

April 2012


Application Situation:

Outage to Super Grid Transformer and inspection to all exterior HV & LV bushings sited to the Noise Ecnlosure roof area.



Corrosion and oil discharges were observed to the LV Turrets which indicated through wall penetration, placing the asset at high risk of internal contamination. Upon removing bituminous membrane, exposed metal corrosion and active oil discharges from Turret were identified.



Belzona® 1221 (Super E Metal)

Belzona® 1161 (Super UW Metal)

Belozna® 5831 (ST Barrier) 

Belzona® 3121 (MR7)



Mild Steel


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflets FBC-6, TCC-1 & RPA-1. After isolating the oil conservator tank and marking area of repair to each Turret, the bituminous coating to the base was removed. Substrate degreased and prepared by MBX and hand abrasion. All live leaks were stemmed using Belzona® 1291. Doubler plate covering the Turret circumference/base bonded in place with Belzona® 1161. Once cured, Belzona® 5831 applied to provide corrosion protection and finally Belzona® 3121 applied to seal full circumference of Turret to roof joint.


Belzona Facts:

Client required swift response to provide a satisfactory, long term solution to protect against failure, downtime and maximise the asset life. Belzona fulfilled the Client's wishes in supplying a full turnkey solution within the timescale available.


Photographs Description

  1. Location of three LV Turrets
  2. Corrosion and live leak oil discharge
  3. Plate bonding
  4. Work completed on one of the Turrets
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


For more information about Belzona visit: