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Recent content by mrtangent2

  1. mrtangent2

    PMP Qualification v APM Project Management Qualification (PMQ)

    thanks for feedback. From what I've seen hiring managers are asking for PMP / AMP - its probably a pain i will just have to bear irrespective if it adds value to me doing the job- much as it frustrates me. Ive never been involved in Agile or Scrum projects where I work its all direct...
  2. mrtangent2

    PMP Qualification v APM Project Management Qualification (PMQ)

    Background I'm a project engineer and have been for 13 years now. And worked in projects for now for 20 years at the same company both in UK and in Asia and with over 80 hours of training. In the chemical industry I may be leaving my current company in 1-2 years and looking opportunities...
  3. mrtangent2

    IBC Mixer / Drum Mixer - Electric or pneumatic

    we are a large complex so we already have instrument air and nitrogen so its low risk for us.. and its only a peroidic mixing.. say 1 day per week or a selective customer.
  4. mrtangent2

    IBC Mixer / Drum Mixer - Electric or pneumatic

    @MintJulep when you say expensive.. to qualify this.. what rough range are you after.. we have large supply.. in general are we taking 10 m3/hr, 50m3/hr or 1000 m3/hr.. we have excess capacity..
  5. mrtangent2

    IBC Mixer / Drum Mixer - Electric or pneumatic

    I am after users experience on IBC mixers / drum mixers. Ive seen air and electrical ones. Are users that have them in place - seen for occasional usage ones any major draw backs with IBC air driven mixers? I believe its all down to impeller design and tip speed etc that sets mixing with...
  6. mrtangent2

    Remote CCTV Towers Solar Powered - Battery Pack options

    Id like to expore is there an industry or system avialable to install solar powered batterys for "remote CCTV" towers in a permeant type location . I see plenty of CCTV tower systems for rental for building sites but when i enquire to purchase them they are £25k/ $18k or so price which seems...
  7. mrtangent2

    Tank Vents - Plastic Bags - Pressure events ? (even possible)

    This is a curious question Ive been asked. Im quite familiar with a plastic bag blocking a API tank vent and a vacuum being pulled with resulting tank damage => and see it first hand many years ago as a student on an API MEOH Tank. But, Im fairly sure the answer is NO.. but for API tanks is...
  8. mrtangent2

    Is it common not to show round handled valves as such in 3D models ?

    This is general. 3D modelling software question. I've recently been advised with the current software tool used - it is difficult to represent round handles in the model output visual display so round handles are shown as pan handles. The same for extended handles around insulation...
  9. mrtangent2

    Practice of Solar Power for Remote CCTV/ Low power applications

    We are installing new CCTV cameras on a project and I want some feedback experience of electrical teams on providing solar powers (maybe) dual supply or dual batteries to power security cameras ? technology of power generation and storage seems to have moved on a lot.. so at 60watt type power...
  10. mrtangent2

    Packed Bed L/D to avoid channeling

    Packed Bed L/D to avoid channeling : I am after a rough guide / or basic validation to avoid Channeling in packed beds .. for activited carbon treating a product to remove order.
  11. mrtangent2

    Retube process key steps

    sorry my bad typing 1. Grind out welds on all tubes 2. Pull all tubes out. 3. re-detail (tube sheet) 4. insert new tube sheet => insert new tubes on by one/ 5. reweld up tube sheet. and seal
  12. mrtangent2

    Retube process key steps

    Hopefully this is ok to ask in the Re-tube process of a fixed tubesheet. Id like to validate my understanding of the process. Is it as below 1. Grind out welds on all tubes 2. Pull all tubes out. 3. re-detail (tube sheet) 4. insert new tube sheet 5. reweld up tube sheet. with a very large...
  13. mrtangent2

    NPFA 30 - Warehouse Fire protection schemes A,B,C,D,E - What sets the scheme

    Hi all. thankyou for the advice below.. sorry these are basic questions we are self insured so no AHJ involved. what I dont understand with the schemes B... why is a floor / above the top layer of say IBCs drums required instead of a fire bulb with a heat shield does the complete...
  14. mrtangent2

    NPFA 30 - Warehouse Fire protection schemes A,B,C,D,E - What sets the scheme

    Thankyou for the comments so far.. very helpful. What do you do , if you have > Metal clad IBCs > Plastic IBCs > drums > class IIIA/B materials can you mix up all 4 above in the same rack? I'm getting feedback that NFPA 30 does not have have a design criteria to cover this mixture of...
  15. mrtangent2

    NPFA 30 - Warehouse Fire protection schemes A,B,C,D,E - What sets the scheme

    No sorry for confusion.. In the area I have Class II combustible, Class IIIA combustible , Class IIIB combustible stored in IBCs in racking. So what determines what scheme of fire protection do i need NFPA 30 seems to have schemes from A,B,C,D,E... Im struggling to understand what sets the...

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