Whittington Hospital

Official Scientific Report of NMR PIPETECTOR Installation Anti-Corrosion Equipment at Addenbrooke’s Hospital


  • Whittington Hospital Appearance of the building
  • Whittington Hospital Header of the domestic hot water pipe

Installation Purpose and Result

Whittington Hospital is one of the largest hospitals in North London built during the 1860’s. Block ‘C’ which the main boiler plant room supplying hot water for the entire hospital complex has iron pipework (SGP) mostly 30 to 40 years old and this system also supplies to the Day Surgery, Administration and Sterile Services Areas within Block ‘C’.

For the protection of all the domestic hot water pipes from internal corrosion in Block ‘C’, one unit of NMR Pipetector PT-100DS was installed onto the 4 inches diameter header pipe of the domestic hot water system situated in the boiler plant room. Only 12 days after the installation of NMR Pipetector, the Fe content in hot water considerably decreased from 7.33 mg/l to 0.133 mg/l and 29 days after the installation the Fe content decreased to 0.077 mg/l which is much lower than the British Government Standard for Drinking Water of 0.2mg/l. It means that new forming of corrosion (FeO(OH)) inside the pipework was immediately terminated and the existing corrosion was reduced to magnetite (Fe3O4) which does not dissolve into water. NMR Pipetector protects inner pipework from any internal corrosion from now on.

Installation Summary

Name and Location of Building Whittington Hospital: Highgate Hill, London, United Kingdom
Building Summary Hospital Building
Installation Day May 3,2006
Installation Place and Amount

Outlet pipes from 2 hot water tanks: PT-75DS × 2 units

Domestic hot water header pipe in the boiler plant room

PT-100DS × 1 unit

Change of Fe Content in Hot Water(㎎/ℓ)

Change of Fe Content in Hot Water

Fe Content in Hot Water(㎎/ℓ)

Before Installation After 12 Days After 19 Days After 29 Years British Government Standard for Drinking Water
7.33 0.133 0.388 0.077 0.2