Hi Everyone,
Can somebody from this forum provide me with some guidelines for preservation plan for a 2 stages liquid ring vacuum pump. I assume, it can be pretty much the same preservation plan for any type rotating equipment.
My background is not precisely rotating equipment, and I need to...
Hi everyone,
A section underground piping will be replaced and there is a need to seal the annular space between the carbon steel casing and the pipe.
Can you guys please, shed some light on regards the type of sealing material normally used for this purpose? What's your experience on similar...
Hi everyone,
Is there any opportunity in this forum I am provide with technical information about the trend nowadays in the use of corrosion protective wraps on underground piping instead of typical design of corrosion protective wrap on pipe and carbon steel casing.
There are countless...
Dear Folks ,
I have been dealing with some issues related to cased underground piping and I need some technical help.
When a CP is implemented the main purpose is to protect the bare pipe. However, the first barrier for soil corrosion as a damage mechanism is the sleeve. Both, the sleeve and...
I am looking for some feedback concerning inspection of the underground rod anchors of Flare Stacks or towers of communications. Meaning by that, the portion of the anchor system (concrete block and section of the rod between the concrete block and the ground surface).
Is there any experience...
Hi everyone,
Visual inspection performed on Air Cooled Heat Exchanger revealed some tubes are warped, twisted and with sagging. Tubes are SA-179, OD 1", tube-tubesheet joint is fully expanded in two grooves instead of seal weld.
Location of the damage is about 6' from the back side of header...
Hi Everyone,
A visual inspection on tubes of an Air Cooled Heat exchanger revealed tubes were found warped, twisted and with sagging. The fluid is Reach Amine and tube-to-tubesheet joint is full expanded in double groove. Tube material is SA-170, OD 1" and BWG 14.
What is the acceptance...
Hi everyone,
I need to complete an integrity assessment in a furnace operating in a Sulfur Recovery Unit, assuming this furnace eventually goes through a deflagration conditions.
Trying to get information on this regard,I have found out detonation is pretty much the same than deflagration...
Hi Gents,
I have a Shell & Tube Heat Exchanger running to the following design pressure conditions: at 2200 psig on tube side and 220 psig at shell side.
Background history points out this exchanger have always been hydro tested thru differential hydro test. However, drawing does not call for...
In order to complete some integrity assessments, I have been reviewing some information concerning operating temperature of the pressure vessel. I noted that some of them appear to be running close to the design temperature. Some engineering practices state and recommend the maximum operating...
Can somebody is this group shed some lights concerning technical information through which, I can state that double groove, single groove and seal weld is mandatory for tube to tube-sheet joint for type shell & tubes heat exchangers. Probably fluid clasification, thermal cycles and tube-sheet...
A recurrent leakage issue needs to be solved for a shell & tube heat exchanger at shell to tube-sheet to channel flanged joint, and partially exposed to cycle service. One of the options to solve the problem could be bellville springs washer. This is type sandwich flanged joint...
THE POINT TO DISCUSS IS, FAILURE OF THE BELLOWS ON SAFETY RELIEVE VALVES
I have not a huge experience with this kind of failures on safety valves.
This has been a recurrent issue and never a failure analysis has been completed. In the past the fuequency of failure was between 4 and 6 months...
I have been dealing with pressure drop calculations through screen on bottom of reactor. In some of these cases I have had to deal with plate screen, elephant tools made of plate bars and some cases show up like a combination of screen cloth and plate screen.
The point is that some times we can...
Guys,
The situation is the following:
A modification is going to be performed on piping that connect a level indicator (Level Bridle) to a Steam Drum. Modification consist on vent valve installation on top of the level indicator.
I would like to know whether such modification needs to be...
I am not familiar with failures due frozen conditions. Currently I am performing an assessment for a piping failed due frozen condition, and I would like to know how I can get the maximum pressure developed during the frozen process until piping gets the burst pressure.
Im was wondering if the...
Hi dear friends,
I´ve got to work in assessing a piping that it is frozen a day ago and I need to know:
what should be the procedure through which, I can make sure about its mechanical condition, before it gets back in service.
I know generally we can expect some cracks once the piping is...
Hi Folks,
If I have to wave a Hydrostatic test in an Atmospheric Tank, 200 ft diameter and 60 ft height because of economical and time reasons:
How can I compensate this test with NDE?
Is Hydrostatic test defined as a leak test or for testing the mechanical integrity of the tank?.
How is the...
An Air Fan Cooler has a design pressure of 80 psig, however data issued by process engineering indicates its operating max pressure is 8 psig.
The test pressure should be 1.5*(PD) and it seems to be very big as compared to operating pressure. What is the reason Air Fan Cooler are manufactured...
Hi All
A tank of Height 60’ and Diameter 200’. It is insulated and it will be inspected for roundness and plumpness.
A bulge is expected to be detected through internal inspection.
Do you know about the latest inspection techniques to be used and those companies capable to carry out such...
