Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: jtseng123
  • Content: Threads
  • Order by date
  1. jtseng123

    Normalized materials for special services

    Dear all, Do any of the following services require normalized plates, forging and fitting ? 1. Caustic service 2. Acid service (H2SO4) 3. Lethal service 4. Hydrofluoric (HF) Acid service 5. Any other services require normalization if you know of ? (Wet sour service is yes) I try to put all...
  2. jtseng123

    Canadian PE stamping

    Dear all, Anyone who has purchased pressure vessel outside of BC Canada and shipped to jobsite in Canada, would you please advise the following : 1. Does the purchase order package (which contains specifications, standards, vessel data sheets or drawings) require PE registered in BC Canada to...
  3. jtseng123

    Flange type between vessel and heat exchanger

    Dear, Please see the attached sketch. Shall the body flange between vessel and heat exchanger be TEMA R Class confined joint or a regular ASME B16.47 flange is ok ? Our heat exchanger engineer insists a custom made TEMA R Class confined joint...
  4. jtseng123

    Body flange type between vessel and heat exchanger

    Dear, Please see the attached sketch. Shall the body flange between vessel and heat exchanger be TEMA R Class confined joint or a regular ASME B16.47 flange? Is it mandatory to be TEMA R Class confined joint...
  5. jtseng123

    Full penetration or fillet weld to heavy wall CS and SS

    Dear all, Is it necessary to use full penetration weld for welding support ring, beam seat, support clips of platform/ladder/pipe to vessel wall where thickness is greater than 50 mm ? Any difference between CS and SS ? This question is only for general service vessel, not for special...
  6. jtseng123

    Stainless steel service bolt not to be hydrotested

    Dear all, First time seeing a spec saying austenitic service bolts shall not be used in shop hydrotest. We have stainless steel vessel with stainless steel service bolts for manways and blinded nozzles. Any reasoning why SS service bolts shall not be hydrotested ?
  7. jtseng123

    Rigging analysis for horizontal drum

    Dear all, We have several large diameter horizontal vessels: 21' diameter x 72' long. No lifting lugs were welded to vessels. CG and weight are known. Only sling(polyester fiber rope) will be used around the shell for lifting. Vessel vendor did not specify lifting points, but it is very easy...
  8. jtseng123

    Paint on the threaded bolt holes of studding outlets (pad nozzles)

    Dear all, I have a new CS vessel with several pad nozzles. Vendor painted the threaded bolt holes with primer, mid and top coats. I am afraid it can cause issue when installing stud bolt to connect to external valve at site. Shall I ask vendor to strip the paint and apply rust preventative...
  9. jtseng123

    Dent on jacketd half pipe

    Dear all, A vessel hydrotested,U-stamped and shipped to site, then found 3 mm deep dent on external jacketed half pipe. Half pipe was made of 3" CS pipe with 6 mm minimum thickness. Photos attached. What will be the criteria to justify that it is good for service ? Thanks...
  10. jtseng123

    Fatigue screening per Div 2, 5.5.2 and Table 5.8

    Dear all, I have a lug supported fully insulated vessel. Operating at 100F for 10 days, then go to regeneration at 500F for 2 days, then idle for 8 days. So a full cycle is 20 days. Very easy to calculate how many cycles for 30 years. But our client is saying I need to consider Table 5.8 for...
  11. jtseng123

    Bolting for body flamnges and manway

    Dear all, We have new vessel with standard bolt length for body flanges and manway. Client requests to use longer bolting for bolt tensioner at jobsite. It is too late to replace with longer bolt for the shop hydrotest. Can it be hydrotested with the standard bolt length, then after shipped to...
  12. jtseng123

    EEMUA 190 mounded bullet

    Dear all, We have an US vessel supplier refuses to comply with EEMUA 190 for material properties and test requirements after purchase order already placed. Before PO, they did confirm they will comply. What their claim is: plant is in US, so only need to comply with ASME Div.1 requirements...
  13. jtseng123

    EEMUA 190 for mounded bullet

    Dear all, We have an US vessel supplier refuses to comply with EEMUA 190 for material properties and test requirements after purchase order already placed. Before PO, they did confirm they will comply. What their claim is: plant is in US, so only need to comply with ASME Div.1 requirements for...
  14. jtseng123

    Code stamp requirement in Texas

    Dear all, A current project in Texas we are looing for whether code stamp U or U2 is mandatory in Texas or not. Can anyone help with source or jurisdiction stating it is not mandatory ? Below link is NB-370, National Board Synopsis. Attached table is from the website. Does it mean code stamp...
  15. jtseng123

    Bolting material for manway plug

    Dear all, I have a SA-105 manway which has a 304H SS manway plug and bolted to flange as shown in the attached sketch. Design temp for flange is 650F and gas phase. What will be the better choice for bolting and lock washer material ? 13 Cr or 304 SS ...
  16. jtseng123

    Div 2, Table 4.4.1 temperature limit for compressive stress

    Dear all, Div 2, Table 4.4.1 sets the 800 F limit for many commonly used materials for compressive stress, that means I can not use the materials that I used to use if temp is exceeding 800F unless I switch to Div 1. The compressive stress will occur at design temperature from weight, wind...
  17. jtseng123

    How to prevent sigma phase embrittlement on welds for 304H SS in high temp service

    Dear all, Can anyone provide some guidelines how to prevent sigma phase embrittlement on welds for 304H SS. This is for part in 1450 degF design temperature.
  18. jtseng123

    Why SA-240-TP 316Ti not listed in ASME sec II D, table 2A

    Dear all, We have a slender C.S. equipment that is designed per Div 2, Class 1 to meet design pressure and specific metal thickness for heat transfer purpose. If using Div. 1, it will be too thick and not fit the purpose. On the vessel body there is an expansion joint the material is...
  19. jtseng123

    Cone design per 2017 Div 2, Section 4.3.11.4

    Dear all, I have a question for the code equations 4.3.46, 4.3.47 and 4.3.56. If I am using 12 mm thk for small end, large and, and cone, it meets all equations and internal pressure. However, our Licensor/Client asks us to use 36 mm thick based on their standard design for this specific...
  20. jtseng123

    What are the local jurisdiction requirements in Alberta, Canada ?

    Dear all, We will have vessels built to ASME Section VIII, Div 2 code for a plant in Alberta, Canada. The vendor will be from overseas. What will be the specific requirements from the Alberta local jurisdiction (ABSA) that the vendor shall follow ? Thanks for your help. http://www.absa.ca/

Part and Inventory Search

Back
Top