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  1. Hierro

    API 650-installing a pressure transmitter directly in the roof

    Can anyone please advise if installing a pressure transmitter directly in the roof of a refurbished API 650 tank is permissible? If it is, where can I find some installation details of this arrangement ? Thanks.
  2. Hierro

    NPSH in pipeline boosting pumps

    How do I calculate the NPSHa in a pipeline boost application (no tanks as suction feed)? Say for instance, that pressure I expect in the suction point is 200 psig... Thanks
  3. Hierro

    Low pressure alarms in pipelines

    Think I got it... I ll have the pumps shut down when 15% of the lowest normal operating pressure (LNOP) is reached. I ll have an alarm setting in our control room @ 5% of the LNOP .... just to be aware ! Thank U all.
  4. Hierro

    Low pressure alarms in pipelines

    How to determine low pressure value settings in pipelines ? Say for instance, that the design pressure of a pipeline is 1100 psig, and the normal operating pressure is 850 psig. At what pressure should I set a low & low-low pressure alarm that'd warn me of an irregular condition ? Thanks.
  5. Hierro

    Hot tapping in low pressure tank

    I d like to hot tap (install two- 2 inch nozzels) a small tank that contains crude oil. This tank was designed under API 650. I was checking this standard, but since this code governs design, does not indicate me how to hot tap it. What standard can I look for guiding me thru ?
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