Page 27 - ITAtube Journal 2/2019

Unsatisfactory application of allied processes
In consequence, periodic examinations of their facilities by our cus- tomers, and also by building technical control of ces, which can be legally required, enable to point out defective anges and lead to a speci c need of repair for each of them.
legally required, enable to point out defective anges and lead to a speci c need of repair for each of them.
IV) RISKS WHEN FLANGE OBSOLESCENCE IS TOO OLD
Waiting too long to repair pittings, scratches, cracks and other failures can cause serious accidents in case of anges breaks.
Moreover, a business interruption means a lack of turnover and, nally, harm a company. That is why it is so important not to neglect a ange repair.
V) WHY PORTABLE MACHINES ARE SUITABLE FOR ALL TYPES OF FLANGE FACING?
Portable machines allow to repair anges with numerous diameters without having to replace them.
VI) CASE STUDIES: A LONG EXPERIENCE OF ON-SITE FLANGE FACING 1. Combined turbine inlet ange
Flange OD: DN250 No. of bolt hole: 12 Seal face type: at Machine: TU600
Procedure:
Clean surface
Re-welding the corrosion part Machining with cutting tool Fine machine with insert bits
Conditions:
Seal face corrosion Upside
Working above ground
Portable lathe – ange facing and boring machining units
Portable lathe – ange & valve facing and boring machining units
Technical Papers
Protem SAS
Z.I. les Bosses
26800 Etoile-sur-Rhone France
Tel: +3347557 4141 Fax: +3347557 4602
contact@protem.fr www.protem.fr
ITAtube Journal No2/May 2019
27