8. Washing and testing water
In both cases, the water must be cleaned of suspended matter, particularly deposits containing corrosion debris from pipes in poor condition, often iron-based.
Washing water
City water containing less than 25 ppm chlorine ions can be used, while the most corrosion-resistant steels can accept less stringent limits.
Test water
Where interior access is possible and complete drying can be achieved, the water described above can be used.
Where access is not possible, demineralized water or water neutralized to a minimum pH of 7 with corrosion inhibitor should be used.
These precautions can be reduced in the case of steels with high chromium and/or molybdenum content, such as duplex...
The Ultimate Scientific and Technical Reference
This article is included in
Hydraulic, aerodynamic and thermal machines
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Washing and testing water
Reloading, heterogeneous welding and welding of clad plates
Bibliography
Basic works
Reference
In Engineering Techniques
On stainless steels
On forming
About welding
Basic works
Standardization
Series of AWS standards (published by AWS).
ASTM series of standards (distributed by ASTM International).
Series of NF EN standards (distributed by AFNOR).
- Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count - ASTM E 562 - 2002
- Standard Practice for Detecting Susceptibility to Intergranular Attack in Austenitic...
Regulations
Directive 97/23/EC of the European Parliament and of the Council of May 29, 1997 on the approximation of the laws of the Member States concerning pressure equipment, known as the Pressure Equipment Directive (PED), OJ L181 of July 9, 1997.
Organizations
UNS numbers (unified numbering system for metals and alloys)
http://www.matweb.com/search/SearchUNS.asp
Center technique des industries mécaniques (Cetim)
Syndicat national de la chaudronnerie,...
The Ultimate Scientific and Technical Reference
