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  1. AlphaT

    High temperature containment CCTV cameras?

    StuartB is right about the glass browning. It's radiation induced, and you need special "non-browning" glass to avoid this. You could devise a shielded casing for the cameras using this glass to reduce rad exposure to the lens, but that's hardly low cost. Probably easier just to...
  2. AlphaT

    Time Dependency of Stress/Strain on 304 SST

    Thank you very much for your response. I feel a lot better about being able to make a case for keeping this vessel in service.
  3. AlphaT

    Time Dependency of Stress/Strain on 304 SST

    I had read a bit on martensite generation. If I understand correctly, we would need to have gotten some plastic deformation to generate the heat necessary for this to occur. Is that correct?
  4. AlphaT

    Time Dependency of Stress/Strain on 304 SST

    I'm looking for information on the effect of very rapid stress onset on 304 SST. We have a pressure vessel which was subjected to an internal explosion and I'd like find out if we can use the lack of deformation of the vessel as proof that the vessel was not overpressurized. Essentially I'd...
  5. AlphaT

    Restore Vessel to Service After Overpressure

    We do have an environmental group that has been involved in making sure that our recovery is approved by the appropriate local regulators (there are a number of regulations we have to navigate, most notably RCRA and NEPA). In addition, we're a federal contractor, so we've got a federal agency...
  6. AlphaT

    Restore Vessel to Service After Overpressure

    Thanks for your good advice. Your recommendations were in line with what I'd been considering. We are presently angling toward using inspection to verify the vessel wasn't damaged. It helps that the sequence of events to have had a detonation are extremely unlikely. Normally, I'd hydro the...
  7. AlphaT

    Restore Vessel to Service After Overpressure

    I've got a situation in which a 304SST vessel was exposed to a possible overpressure. The vessel is vented, and designed to contain hydrogen deflagrations. In this situation, the vessel may have been exposed to a detonation, exceeding the vessel design by an unknown factor. There is no...

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