Simple question - Take a 2:1 SE Head on a Div I vessel. What is the maximum number of nozzle openings (in terms of area m2 relative the the dished area) that I am allowed to place on the head? Are there any restrictions on this by ASME Code? If so which para?
Many thanks.
Equipment: Shell and Tube Heat Exchanger designed to ASME Div 1
This is a simple question. If the tubesheet of the exchanger was designed and built to TEMA in 2000, and if there is a need to re-rate and re-certify the exchanger now, will the calcs have to be based on the latest ASME VIII...
Location: Offshore Platform
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I understand Hastelloy C-276 reacts with sodium hypochlorite which is used on offshore platforms to prevent marine growth/fouling of pipework. 2 ppm is what we will normally specify for continuous dosing and for intermittent shock...
Design Code: ASME Section VIII
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Can someone please tell me if the weep holes at the reinforcing plate is sealed after the vessel is put into operation? Or should it be left open? Why?
I understand the weep hole is to detect leakages in welds during hydrstatic...
Location: Offshore Platform
Fluid: Seawater
Capacity: 46,000 bpd
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The water Injection System consist of a Deaerator Tower, Coarse and Fine Filters. In the past we have been using glass flake lining and Monel/Super Duplex Stainless Steel internals. However, we are...
Location: Offshore Platform
Fluid: Seawater
Capacity: 46,000 bpd
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The water Injection System consist of a Deaerator Tower, Coarse and Fine Filters. In the past we have been using glass flake lining and Monel/Super Duplex Stainless Steel internals. However, we are...
I came across an article by a Heating Oil Supplier (Therminol) saying that if the supply temperature exceeds 175 deg C, it is prudent to have the piping pressure class in 300# minimum (even if the design pressure/temperature rating allows the applciation of 150#) to ensure "leak tightness" of...
Equipment: TEMA S&T Heat Exchanger, BEU type.
Design: ASME Div 1/TEMA
Service: Crude Oil Cooler
Location: Offshore Platform
Tubeside, 316L, Shell side CS (Cooling water)
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We plan to rerate an existing S&T Hex which has already been operating for a...
Simply put, has anyone heard of the 10/13 Rule in ASME VIII with regards to the design of shell/tube side desing pressures?
In the past we have used the 2/3 rule whereby if the low pressure side design pressure is less than 2/3 of the high pressure side, a rupture disk shall be installed in the...
We are looking at using PCHE (heatric) for a clean gas/cooling water service operating at temperature above 50 deg C (but below 100 deg C) in an offshore marine enviroment.
From what I understand, 316L is not accpetable for application above 50 degC in an offshore marine environemnt and due to...
We are looking at using PCHE (heatric) for a clean gas/cooling water service operating at temperature above 50 deg C (but below 100 deg C) in an offshore marine enviroment.
From what I understand, 316L is not accpetable for application above 50 degC in an offshore marine environemnt and due to...
Code: ASME Sect VIII, Div 1
Is it normal to request for a head forming test piece for Duplex materials i.e. semi ellip from a flat plate?
What are the concerns? Does cold working affect mechaical and corrosion properties of the duplex material?
Thanks in advance.
Co. plans to purchase a cast stainless steel vessel (a cyclone separator, Kelburn). This vessel will be designed to ASME Div I.
Has anyone the experience purchasing cast stainless steel vessel? Besides its inferior nozzle loading issues, are there anything else I need to lookout for compared...
For a double grooved and expanded tube to tubesheet joint is it normal to request mock-up tests to establish the allowable loads as per Appendix A of ASME Div I?
Or are requests made only for specific reasons?
Can a Shell and Tube Heat Exchanger be designed to Div II requirements i.e. its tubes, tube-sheets, shell and flanges and U-2 stamped?
Can someone please share the experience?
Heard that mods and repair on Div II vessels are difficult and it needs to be brought back to the original fabricator.
Can someone please describe the requirements in general w.r.t to repair and mods to Div II vessels.
Code: Asme Section VIII Div 1
Location: Offshore Platform
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We have a gas-reinjection compressor outlet discharge pressure dictating the design pressure of vessels and tubular exchangers in excess of 3,000 psi limit stipulated in U-1(d).
Code highlights that...
Ok, I understand hardness testing is not reaally a Code requirement, but is a measure of weld quality and is the industry (oil and gas) norm these days.
Re charpy impact testing. I have also come across requirements where impact testing is required for some weld procedures (regardless of its...
The duplex stainless vessels are to be operated at temperature well above 60 deg C on an offshore platform.
As part of inspection and testing requirements during fabrication process, is testing to ASTM G48 necessary (due sensitization and emrittlement during welding process)?
What should the...
Code: ASME
Mat'l: Predominantly A516 Gr 70 + 3mm 316L
Location: Offshore Platform
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Due to wet CO2 corrosion, most of the vessels require 316L internal cladding. The reservoir temperatures are high and in some cases up to 140 deg C.
After...
