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  • Users: pplbb2012
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  1. pplbb2012

    Water Spray Protection Design for Storage Tanks under Heavy Wind

    Hi Everyone here, I met a review question from client regarding to the water spray protection for storage tank, they wonder how the cooling water and spray system were designed to against the heavy wind (40m/s) when fire happen. Honestly speaking, I had never consider such issue, the quantity...
  2. pplbb2012

    Help!--How can 100% MOD AASHTO DENSITY be achieved?

    One of my job in South Africa ask for 100% mod aashto desity for road subbase, however, the subcontractor said they can't achieve such 100% compaction ratio, normally 98% is their maximum capability. Can anybody here instruct whether 100% mod aashto desity is really hard to be made? Is there...
  3. pplbb2012

    API RP 2030 - Application of Fixed Water Spray

    I am not sure whether API can be discussed in this forum, but hope i can get your great support. Story comes from my confusion on item 7.3.13 of API RP 2030: Atmospheric storage tanks generally do not warrant fixed water spray protection and (with the exception of horizontal tanks) do not...
  4. pplbb2012

    Central air-conditioning system design for HVAC design in anti-blast building

    Hi There: I am working on an anti-blast building HVAC design, in which more restriction of building opening was specified from Structural and Architectural, they expect central air-conditioning system shall be applied in this building instead of individual air-conditioning. Since such change...
  5. pplbb2012

    Induction Bend Radius for Pipeline with Pigging Requirement

    Hi everyone. This is one simple question but was challenged, hope I can get support herein. For pipeline induction bend, we usually use 3d (12” above) or 5d (less than 12”) as governing for curvature radius, it actually can facilitate the pigging during erection and operation. I believe such...
  6. pplbb2012

    Firefighting for 5km Pipeline

    Hi, we were designing a 5km gas oil pipeline from jetty to storage tank, while Client just challenged what resources are being considered to fight a possible fire along the pipeline route. This is interesting question but really challenge me: active firefighting was never considered for pipeline...

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