In acidic conditions, thiosulfate causes rapid corrosion of metals; steel and stainless steel are particularly sensitive to pitting corrosion induced by thiosulfate.
12.
The most common failure seen in the last 20 years is pitting corrosion in cold water tubes, also known as Type 1 pitting.
13.
Corrosion occurs in various forms in the refining process, such as pitting corrosion from water droplets, embrittlement from hydrogen, and stress corrosion cracking from sulfide attack.
14.
Halide ions increase corrosion in two ways; they chemically attack passivating oxide films on several metals causing pitting corrosion, and they increase the conductivity of the fuel.
15.
Superficial anomalies ( e . g ., pitting corrosion, dents ) distort the shape, allowing the inspection technicians to measure the anomalies using proprietary software programs.
16.
Thiosulfate ( S 2 O ) is well known to induce pitting corrosion while dissolved free sulfide ( Na 2 S ) is responsible for stress corrosion cracking ( SCC ).
17.
Pitting corrosion can also help initiate stress corrosion cracking, as happened when a single eyebar on the Silver Bridge, West Virginia failed and ended up killing 46 people on the bridge in December, 1967.
18.
Contamination of the pit with deuterium and tritium, whether accidental or if filled by design, can cause a hydride corrosion, which manifests as pitting corrosion and a growth of a surface coating of pyrophoric plutonium hydride.
19.
Oxidation of sulfide can also form thiosulfate ( ) an intermediate species responsible for severe problems of pitting corrosion of steel and stainless steel while the medium is also acidified by the production of sulfuric acid when oxidation is more advanced.
