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Sjones, If you are eager to learn more, there is a NACE paper (TR) regarding banning the use of ERW pipelines in sour service.

Your apparent lack of appreciation towards pertinent welding processes involved in ERW fabrication is regrettable. I fail to see why you advocate the utilization of ERW pipelines and yet the Company you work for utilizes seamless pipelines and GRP; in addition to zero offshore operations...

Dear Mr. Jones, Several GCC operators require that only HFIW be utlized moreoever, > 400 Hz is mandated. There is no doubt that ERW is cheaper and still inferior; by virtue of your current operation utlizing seamless pipes for flowlines. As for welding X65; I beg to differ. It is...

mcmidkiff: take a look at NACE-MR0175/ISO 15156; I stand corrected about MR0103 scope. Sjones: I wonder how many manufacturers are able to provide HFI > 400 Hz, the time impact associated with weld DT, flattening & microstructure examination, re-coiling tests,etc and how many manufacturers...

a. Thank you PAN, for the correction. b. An increase in material strenght (yield/tensile) is achieved in carbon steel through an increase in Carbon or Manganese content. Both of which are restricted in sour service. Elements that cause segragation such as Sulphur and...

1. NACE-MR0175 has been superseded by MR130. Refer to this thread: thread338-82286 2. NACE-MR0175 does not address HIC, NACE-TM0284 proposes testing methods for HIC without any guidance on acceptance criterion. 3. Refer to this thread: thread286-83592 for proposed...

How many tubes were plugged? What is the service tube and shell side? What is the service stream of the tube?

I dont understand your acertions hope the following helps :) 1. Heat Absorbed From The fire qin = 34,500 F(A^0.82) <------NFPA 58 2. Vapor Flow Rate Qrv = qin / hfg where; qin = is the total heat absorbed (Btu/hr.), F= (insulation factor) A is the total surface area (ft^2)...

Guided Wave

Good Man :) and solid Engr.

SJ, Sulphidation & Polythionic acid SCC if the material is sensitised :) At what conditions?

SJ, The flares are open to atmopshere. How is a thermal barrier coating related to H2S. Cheers

a. H2S is not a concern for the selection of flare tip material. b. SS310 is superior to 800H. c. SS316 is inferior to both SS310 and 800H. d. 600 is superior to SS310, check the Cr content. Cheers

Please provide more details' specifically: 1. Corrosion features; you mentioned rust any other specifics?? 2. Batch reactors; how often is the stream online. 3. Any sampling in progress by Nalco ? what is checked if any? 4. Why is refrigerated methanol being used? At any rate...

Hope the following helps, I liked polleke reply ? Quality Control is a hierarchical plan that demonstrates how conformance is managed during various tasks and subtasks to achieve a desired goal. (Refer to ISO-9001) The conformance is assessed against international standards, regulations...

Please be specific: At any rate; This should provide a broad view of the cost of not having quality. 1. http://www.ogp.org.uk/ 2. http://www.hse.gov.uk/statistics/index.htm 3. Past Incidents (Search for) 3.1 Bhopal 3.2 Flixborough 3.3 Mexico City (LPG Plant) 3.4...

Take a look at GWUT. However, I would suggest reconsidering Intelligent Pigging (MFL)

GWUT http://www.techcorr.com/testing/ultrasonics.htm

Sorry,, why was SS welding consumables used for a CS - CS joint. Under what premise was the WPS and PQR qualified.

:) I hope grampi1 responce, shed's some light on your previous post.