4 ms·

Require a different user's authentication or admin code to approve an "ALL" transaction.

zentiggr 6y ago
While there might be emergency conditions that would make this cumbersome, in general that sorry of two person control makes sense. That's why the military uses it for especially dangerous actions or conditions. (Weapons loading on the sub i served on, for example).
segfaultbuserr 6y ago
Yes, it works. But when the sample is large enough, it still happens once in a while. In 2004, a CSB investigation showed that an entire chemical plant exploded after the interlock was bypassed by the supervisor password [0][1]. > The explosion occurred when maintenance personnel entered a password to override computer safeguards, allowing premature opening of the sterilizer door. This caused an explosive mixture of ethylene oxide (EO) to be evacuated to the open-flame catalytic oxidizer by the chamber ventilation system. The oxidizer is used to remove EO in compliance with California air quality regulations. When the EO reached the oxidizer it ignited and the flame quickly traveled back through the ducting to the sterilizer where approximately fifty pounds of EO ignited and exploded. Apparently the supervisor who owned the password didn't receive any training on the nature of the process and the dangers of bypassing the interlock... [0] https://www.csb.gov/assets/1/20/sterigenics_report.pdf https://www.csb.gov/assets/1/20/sterigenics_report.pdf [1] https://www.youtube.com/watch?v=_2UnKLm2Eag https://www.youtube.com/watch?v=_2UnKLm2Eag
- C1sc0cat 6y ago
  Why would you ever ever have the ability do this "allowing premature opening of the sterilizer door". Ironic it was air quality regulations - that did for them.
  - bluGill 6y ago
    There needs to be something in case the implementation forgot something. These are dangerous of course, but they can also save the day when something unexpected happens.
    - C1sc0cat 6y ago
      This is a physical chemical plant not a website - if you do need to do something like that you do it manually.

While there might be emergency conditions that would make this cumbersome, in general that sorry of two person control makes sense. That's why the military uses it for especially dangerous actions or conditions. (Weapons loading on the sub i served on, for example).

segfaultbuserr 6y ago

Yes, it works. But when the sample is large enough, it still happens once in a while. In 2004, a CSB investigation showed that an entire chemical plant exploded after the interlock was bypassed by the supervisor password [0][1]. > The explosion occurred when maintenance personnel entered a password to override computer safeguards, allowing premature opening of the sterilizer door. This caused an explosive mixture of ethylene oxide (EO) to be evacuated to the open-flame catalytic oxidizer by the chamber ventilation system. The oxidizer is used to remove EO in compliance with California air quality regulations. When the EO reached the oxidizer it ignited and the flame quickly traveled back through the ducting to the sterilizer where approximately fifty pounds of EO ignited and exploded. Apparently the supervisor who owned the password didn't receive any training on the nature of the process and the dangers of bypassing the interlock... [0] https://www.csb.gov/assets/1/20/sterigenics_report.pdf https://www.csb.gov/assets/1/20/sterigenics_report.pdf [1] https://www.youtube.com/watch?v=_2UnKLm2Eag https://www.youtube.com/watch?v=_2UnKLm2Eag

C1sc0cat 6y ago
Why would you ever ever have the ability do this "allowing premature opening of the sterilizer door". Ironic it was air quality regulations - that did for them.
- bluGill 6y ago
  There needs to be something in case the implementation forgot something. These are dangerous of course, but they can also save the day when something unexpected happens.
  - C1sc0cat 6y ago
    This is a physical chemical plant not a website - if you do need to do something like that you do it manually.