Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Tower block


I was extremely interested to read the article on the Severnside works (NCE 5 July), having just been through a similar enhancement process on an overseas project.

Mouchel designed and managed the complete rehabilitation of a similar sized and aged Prill tower at a fertiliser plant in the Middle East. Here the inside of the tower had been attacked by the ammonium nitrate. Also the external faces had suffered from a combination of harsh environmental conditions and higher than predicted imposed stresses from thermal loading.

Many large cracks were full depth allowing ammonium nitrate to visibly escape .

Our solution included breaking out the corroded sections and repairing with sprayed concrete. To strengthen the tower against imposed thermal loading - and in many areas to reinstate structural integrity - Mouchel devised a solution of bonding carbon fibre plates around the periphery of the tower.

The repair was successfully carried out during a 25 day annual shutdown. The tower is now being painted externally to further enhance long term durability.

Steve Godman, project manager, Mouchel Consulting, West Hall, Parvis Road, West Byfleet, Surrey, KT14 6EZ

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.