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  1. gregozo1

    H2S Corrosion in Black Sea

    Have used these springs/valves since the seventies sub sea and get some corrosion - they last about 18 months. The thing with the Black Sea is that below +/- 200m water is anoxic hydrogen sulphide soup and we've never used these springs in this environment, just wanted to know if we can expect...
  2. gregozo1

    H2S Corrosion in Black Sea

    Thanks TVP - we thought it would but what can we do to make the springs reliable - stainless? The springs are quite powerful having to close 3000psi w.p. valves and are open to the sea. How long does the hydrogen embrittlement take to affect steel - weeks, months? Any pointers greatfully recd.
  3. gregozo1

    H2S Corrosion in Black Sea

    Would like to know if steel springs in equipment about to be put on Black Sea floor will be affected by the H2S in solution in the Black Sea

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