Dear colleagues
I am back with the thread 378 392289 of August 3rd. Reference Pipe bending.
The construction company purchased, heat induction pipe bends, with a wall thickness less than specified.(higher wall reduction percentage than specified).
After a wall thickness measure, in the...
Dear All
We have a vendor that provided induction bending spools for all the plant
.
We found thta the etradoshas a wall thicknes less than the specified.
We wanti to select those elbows able to support the design pressure and a minimun required thickness.
Ansi 31.3 defines a wal thicknes by...
Dear colleagues
I have to deal with the job of joining the upper part of a heavy vessel by welding and PWHT.
I have reclaim the construction company, the procedure to suport this upper part during heat treatment.
This upper part is 60 mm- SA 516 70 carbon steel plate
Their answer, was to hold...
Hello friends
1) Can the anchor bolt be torqued after leveling with shims and without grouting?
2)Can the anchor bolt be preloaded with a torque, considering the bolt material condition (70% of yield? for example) or we have the risk of damaging the concrete foundation. As an example I have 3"...
Dear colleagues
After a transportation accident of a trailer, the boiler economiser falled down and some structural parts of economiser were damaged. All the boiler is ASME I stamped. The boiler is assembled at site,so I have asked the owner for the inspection of the economiser with the...
How to be sure to have a leak free api tank bottom?. May be MT or PT will complement. In a ring type beam wall support is not easy to detect any leak, unless you have a membrane and leak detectors between bottom plate and soil, in our case we did not have membrane for the water tank.
I will...
Dear All
I could not see any document about, what level tolerance requires a pipe rack between frames?
As all the pipe arrangement runs along them a civil tolerance is not allowed for a piping setting along the frame beams.
I will appreciate any information you can provide
Regards
Luis
Dear friends
Construction company, has designed all the CWS and CWR as an underground system.
It is a high flow system with CWS in 60" and CWR in 68" and flow, about 30,000 cubic meters per hour.
None pipe supports has been considered . The above ground CWS pumps laid on a concrete slab, connect...
Dear fellows
Vendor has to construct two types of tank floors.
Concrete, for small diameter tanks and ring wall type with different type of soil filling
API 650, recommends for the ring wall a bituminous mixture, but does not says anything about the sand at inner part. For the concrete floors...
I have some concern about this type of design. There are many misssing plates in the concrete pipe rack,the constructor wants to add plates, fixed with Hilti bolts, the original were embedded plates with bar connectors to the concrete and rebars. One of the problems I see with this design...
Vendors for tube expansion tools, say that the required tube wall reduction for SS tube is about 5% and no more than 7% in CS
I suppose it has relation with the hardenability of the austenitic Stainless Steel during deformation and the consequence of plastic deformation in the tubesheet hole...
Pepole
We are welding a 48" pipe for cooling water system. We have branches of 14 and 16" without reinforcement. We dont have a weld joint design. Do we have to weld it set in or set on?-
Regards
Luis
Please
I should like to know the more recommended NDT for detecting defects in the TTS joint.
Eddy current can detect defects like cracks in the expanded area with grooves?
Is IRIS able to detect defects in that critical area of the HEX?.
Are both NDT usefull for magnetic and non magnetic tubes...
The standard for the Fire wáter system is ANSI.B31.3
The client wants to buried the pipe in the trench without visual inspection.
The lines is coated with polyguard.
They want to test controlling the pressure during 4 hours recording the pressure
Does ASNI permits this option'
Regards
Luis
Please
I have to make a quotation for an API Tank 620R NDT tests.
The tank has an E=1 shell wall thickness calculation.
Question
Does the Figure R2 -RT Examination Requirements consider an E=1 efficiency for shell thickness calculation?
Or, it is necessary RT 100% for vertical and...
I am checking several tanks data sheets, in two of them the design temperature is 100°c and 110°C.
Is any appendix in API 650 considering the condition for 110°C.Or I have to design wiht API 620
Regards
The reference document is API 650 eleventh edition add.3
I have API 650 11th edition add.2
I have not seen any recomendation in API for the use of clips welded to the internal side of the tank.
There are details for columnns support, but not clips welded on the Wall and floor to supprort pipes.
This is important if the tank is going to be painted inside. There is low thicknes or the...
Is the first time that i am involved in an specification that replace standard ellbows by induction heate bend pipe.
The enginneering company propose that alternative as a way of saving welds during construction.
Because of a CUI problem, we have to replace a 300 mm width, along 180°C and 18 mm thickness SA 285C plate.
The process column works in two different temperatures ( from bottom to half of it is designed at 100°C, out of 285 C plate and the upper part at -25°C with A 516 Gr70 normalized plate)...
We have a problem of internal dicoloration in a duplex SS pipe. That appears after welding the external reinforcement or saddle of the pipe support.
Can it be avoided with an argon internal atmospher or Nitrogen atmospher in the internal side while welding the saddle?.
Our client has complaint...
