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I believe the U.M. stands for Unmatched Material and also believe that this is a liner... but on your drawings do you show any welding symbols for this area... You can tell what the material is if you get a Third party Inspection Company that has a positive material Identification gun they will...

in the 20th edition of the 1104 and go to chapter 9 Acceptance Standards for Nondestructive Testing has all the answers you are looking for hope this helps

Do all the pieces have the same type of discontinuity or are the other 2 in different areas… can you send pictures of the other 2… if possible? Thanks

and the 5% UT and RT does not release you from the 100% visual, as stated before there are reasons for these requirements I have never seen where the owner did not pay out the butt when he tried to save money on the inspection part of construction, I have been on several sites that ended up...

I have searched ASME AWS and API, I cannot find where it sates in any of these codes that UT has to be completed in 24hours after welding has been completed, could have been a clients specification that you read to come up with this statement, do you remember who the client was ?

We use this Taylor Hobson small, and we have not had any problems... they use to make a smaller one the shape of a cigarette pack they worked very well but had a problem if you squeezed it to hard on the sides it will give you a false reading Travel is limited, and you cannot do the ID of...

I have built tanks in Puerto Rico that had been fabricated in rolls and shipped to PR via Barge, Tanks were 75,000 gallon heads were dished and cut into 2 pieces bottom was coned and sat inside a carbon steel skirt... the company I use to work for was big in shipping roles to the Job site you...

The heads were coned with stiffeners every 2' and I remember after the first post we added stiffeners inside and ran, I beam along the base between wheels I am sorry for the vague details but this was about 20 years ago, and we did not use computers to track everything, I wish we had these tools...

They need to build a DI water skid there is some tank Manufactures that use this to keep chlorides down. 70 sounded high I have inspected some tanks in upstate NY and water, there were 35 ppm and I though that was high, I believe that the DI water was below 15ppm, and I will check if needed.

I have built tanks over the 50' mark. We had to lay them on their sides and weld the rear wheels to the tank,they had stiffing rings... there were a lot of restrictions like could only travel at night and need 2 escorts and as i recall a lot of state permits to pay off... I mean to buy. Tank...

Ballbearing1 I agree but this whole thing is not that stright by using the b31.4 and B31.8 they dictate how much x-ray is required for those codes and refer to the part in API 1104 for rejections and repairs so if you read what the other 2 codes direct us to read it states this is up to the...

I have seen these types of vessles and That I completely understand but the way I read the 1st post was as if the vessle had been built and wroking and now they are going to make some changes to the shell and lets assume that the vessle is in the states... would the owner still have to have the...

1st. For inspection to the B31.4 code for rejections from X-rays you need to look at API 1104 according to 434.8.5 welding Quality in the B31.4 API 1104 states that all rejected area need to be replaced and re-inspected with same method of 1st inspection and any other inspection is at discretion...

this may be a stupid question but can someone help me out a little , when can you have a vessel that is 30 psi with full vacuum and get away with not haveing the vessel stamped, is this a state regulation or am I missing something here, I was under the belief that if you cut ,grind or weld on a...

I would hire third party inspection company to go and do a shop audit, and then you will get the information you are looking for, plus they have nothing to gain if the shop is not up to your standards... there would not be empty promises from a vendor that wants your business.

sicktick look in these places http://www.krautkramer.com.au/Silverwing/vacbox_brochure_lo.pdf and http://www.ndtint.com/vacuum.htm http://www.tspndt.com/index.cfm?fuseaction=prod.product&ProductID=30 and this is for grins and giggles http://www.k2technde.com/downloads/LeakTestAK.pdf

What are you meaning by "cutoff lengths"? What type of instrument are you using for measurements? Do you have control of the instrument to be able to control the travel over the surface, if so what are the increments of travel? Thanks

Does anyone have a worry or comments about Animal fats in grinding compound? Or the glue that is used to bond grit to cloth or paper? Have some clients worried about Mad Cow and the possibility of this getting in the final product. All comments are welcomed Thanks guys

Rule of thumb... if it looks un-safe then it probably is... you must have some concerns or you would not have posted take the time and make it safe... remember if you did what needed to be done, then no one will ever know, if you don’t then everyone will know... just something to think about

"5.22.3.1 Girth Weld Alignment (Tubular). Longitudinal weld seams of adjoining sections shall be staggered a minimum of 90°, unless closer spacing is agreed upon by the Owner and fabricator." You are fitting bound... take this to the owner and explain you have no choice in the way you are using...