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  • Users: pacesetter
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  1. pacesetter

    Rigging certification question

    Hello, I need to use some Crosby 75t shackles located on a piece of equipment for a recovery operation. However, I can not obtain any certification documentation on these shackles. What are my options? Can I go the the manufacturer to obtain original certifications? Unfortunately, all I...
  2. pacesetter

    Safety Training for visit to Offshore Production Vessel

    Hello, What are your company policies for safety training for Engineers traveling to offshore Oil Production Vessels? Do most companies require HUET, PST or BOSIET? and, is this a requirement for Engineers who are only observers? I am working in China and it appears that they will allow you...
  3. pacesetter

    How to find mooring wire Grade or MBL pressure?

    Hi, I need to cut a mooring wire and my cutter says it will cut a wire rope of 1770N/mm^2 or Grade 180. However, I only know the wire rope is diameter 90mm, 39.6kg/m and has a nominal breaking strength of 6800kN. How do I determine the grade or breaking stress of my wire rope? Thanks
  4. pacesetter

    Suitability of Buttress Thread for PV Lid

    Hi, I am looking into a pressure vessel that uses a 7/45 Buttress thread. It operates at 10 000 psi and has a 14 inch diameter flat lid. They are having problems with the threads seizing. Does anyone have some experience to share with this thread style. I have read that the distribution of...
  5. pacesetter

    Material Selection, AISI 4140?

    Hi, I am investigating materials for the flat lid of a 10000psi pressure vessel. It would use fresh water to pressure test components for subsea use. And would be operated in a shop environment. What would be a good choice? A516, A387, A285? Is it possible to use higher strength steels...
  6. pacesetter

    Bearing Grease for Umbilical sheave bearing?

    Hi, I have a NNF Bearing from SKF that is part of a sheave. What would be a suitable grease for relubrication? And, what properties of the grease are important? The bearing supplier has reccomended Mystik JT-6. However, they could not provide any reasons why they use this grease. SKF...
  7. pacesetter

    Is there a fill rate limitation for DOT cylinders?

    Hello, is there a reccomended or maximum limit for the flow rate when filling or venting TC / DOT cylinders with air? I am preparing maintenance procedures that will require filling and venting 43L cylinders. I have made inquiries with DOT and TC but have not got a reply. My compressor is...
  8. pacesetter

    Connecting to NGT thread on Steel Cylinder

    Hi, I am considering using a standard DOT-E10869-4500 Gas cylinder as an auxiliary gas bottle for an hydraulic accumulator system. The ports for the gas cylinders seem to all be 3/4-14 NGT as a standard. I don't want to restrict the flow by placing a valve on the end of the cylinder. I want...
  9. pacesetter

    Steel MC Channel information

    Hi, I am considering using some MC channel in a structure. It appears that the flanges are not tapered. Where can I find detailed information on MC channel? Does it meet any ASTM spec? Thanks
  10. pacesetter

    Please identify this bolt, european?

    Hi, can you please identify this bolt from the attached photo. Interpolating the width across the flats results in a measurement of 1.80 inches. Thanks a bunch, Jeff
  11. pacesetter

    Material selection for steel in low temperature service?

    Hello, I have a various structures that are being certified to ABS for underwater vehicles. Most of the structure is specified as A572 GR 50 or A516 GR 70 plate or W flange. However, I need some square tube. Will I have to go to stainless steel to get CVN's of 25 ft-lbs at -20F. Or, is...

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