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Recent content by 280474

  1. 280474

    Concrete Drill for Anchor Bolts

    Dear All, I have a project to replace my old fender system. For scheduling and cost estimatation, I need some information regarding concrete drill equipment to perform anchor bolts holes drilling on the existing dolphin concrete structure. I have 40 holes to be drilled on each breasting dolphin...
  2. 280474

    Reinforcement Pad

    Dear All, I am not a structural engineer and like to ask help from you guys.. I have some pipe supports attached on LNG tank wall. They supports LNG pipes which are verticaly routed from LNG transfer Pump at the top of tank to the bottom of tank. Now we have a problem of tank wall cracks which...
  3. 280474

    Reinforcement Pad

    Dear All, I am not a structural engineer and like to ask help from you guys.. I have some pipe supports attached on LNG tank wall. They supports LNG pipes which are verticaly routed from LNG transfer Pump at the top of tank to the bottom of tank. Now we have a problem of tank wall cracks which...
  4. 280474

    Vertical Vessel Overlay Patch

    Thanks for the inputs. The reason for not applying the flush patch is the corroded parts are located at more than half of vessel circumference. According to my calculation, 15 deg of circumferencial area will be the maximum length of cutting for window repair method. But having the heavy...
  5. 280474

    Verticality of vertical vessel

    All, Thanks for the inputs. I just try to find if there is such as rule of thumbs for vessel plumbness regarding their height and diameter.
  6. 280474

    Verticality of vertical vessel

    Dear all, My vertical vessel has vertical deviation of 119mm measured from skirt-vessel joint to top head of vessel. I have no verticality data during construction for this vessel as my references, and cannot find any information in ASME code regarding the allowable verticality value for such...
  7. 280474

    Vertical Vessel Overlay Patch

    Dear All, I have a corroded skirt problem at my vertical vessel.It looks like window patching is not applicable since the corroded parts are almost along the weld joint between skirt and vessel. So, I try to install overlay patch with 60cm of wide at along circumferencial of the vessel. The...
  8. 280474

    Barge Ballast System

    Dear All, Do you guys have any idea what is exactly the definition of ballast system. How many types of ballast system available on ship/barge design..? Is there any term and definition of automatic, semi-automatic and manual ballast system. If so, is there any barge/pontoon equipped with...
  9. 280474

    Barge Crane

    Since I has a C.G chart for the specific 4100W series from Manitowoc, I believe the formulae will be very helpful to calculate the crane barge stability at many lifting schemes. I am very glad if you could scan the pages and send to me via email at nasrul@badaklng.co.id Thanks in advance.
  10. 280474

    Barge Crane

    Stephen, Do you have any sample calculation regarding crane barge stability during lifting ? What is the limitation..? what is the acceptance criteria..? regards
  11. 280474

    Barge Crane

    The crane barge will be used at very calm sea water in front of our Dock. It will be used for Loading arm lifting activities with maximum 100 deg lifting scheme. The offset of 1.6m is along the short axis. My further question, is it valid if I assume that movement center gravity of crane barge...
  12. 280474

    Crane Barge

    Dear All, I have a bidder's document to be reviewed regarding the subject. They offer a barged mounted crane with the following specification : Barge Dimension = 150' x 50' x 10', draft=4.5' completed with ballast system Crane = Crawler Manitowoc 4100 (Serial 41383) with LaticeBoom 200T capacity...
  13. 280474

    Barge Crane

    Dear All, I have a bidder's document to be reviewed regarding the subject. They offer a barged mounted crane with the following specification : Barge Dimension = 150' x 50' x 10', draft=4.5' completed with ballast system Crane = Crawler Manitowoc 4100 (Serial 41383) with LaticeBoom 200T capacity...
  14. 280474

    Barge Mounted Crane

    Dear All, I have a bidder's document to be reviewed regarding the subject. They offer a barged mounted crane with the following specification : Barge Dimension = 150' x 50' x 10', draft=4.5' completed with ballast system Crane = Crawler Manitowoc 4100 (Serial 41383) with LaticeBoom 200T capacity...
  15. 280474

    Barge Mounted Crane

    Dear All, I have a bidder's document to be reviewed regarding the subject. They offer a barged mounted crane with the following specification : Barge Dimension = 150' x 50' x 10', draft=4.5' completed with ballast system Crane = Crawler Manitowoc 4100 (Serial 41383) with LaticeBoom 200T capacity...
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