1. Which is the best method available & suggested for inspection of Corrosion Under Insulation in a chemcial process plant?
2. Is it advisable to coat the pipes, drains & vents lines of a hazardous piping system before insulating? how long the high temp coating survive normally.
3. To my...
One of the metallic structure approx. 50 mtrs. high, around the plant process equipment vibrates too much. We have doubt that deflection/ vibration is higher than normal & could be dangerous.
What could be the probable reasons ?
Any method to measure the deflection ?
How much deflection is...
Back to Basics...!
Can some one tell .. where i can get the comprehensive list of codes & standards likely to be used in a Ammonia-Urea fertilizer plant..!
Query may look silly .. however, to us it is very critical to know the correct standards to be procured...!
1. A Filter water tank of 18000 m.3 capacity, that is in service for last 20 years seen a sudden faiure of trusses supports.
2. It is fixed roof type tank. Plate material is IS226 M.S.
3. Some corrosion was also seen on trusses. as per design trusses bottom of approx. 200 mm was submerged in...
We have a water tank that stores water for plant process aswell as drinking purpose. the tank is rmajor repair.
We need to protect the inside of this tank and wish to use a good protective coating that would not affect the potable water quality also.
Please suggest is it allowed to apply...
Boiler tube leak is suspected in our plant.
Tubes are SA213 Gr.,T-11, 3.2 m thick and 38 mm OD (qty. 120 )
Tube sheet is SA387 Gr.11, 21 mm thick.
Boiler is high pressure.
Tube to Tube Sheet weld joint is strength weld.
We need to attedn thetube leak by plugging the leaky tube.
Is the...
We are getting a process column designed. Our designer says that if opt for ASME U-stamp, the thickness of shell would increase & design calculations to be done again.
My Query:
1. Do all vessels, being designed & fabricated as per ASME Sect. VIII Div.1, need U-stamp ?
2. If yes, Does it...
Is it required to carry out solution Annelaing on super heater tubes SA 213 T 22 (2.25% Cr 1% Mo) material with 5 mm tube wall thickness during its manufacturing?
To my knowledge, solution annealing is done on Austenitic steels & not on T22 Alloy material. on Alloy steels, only PWHT may be...
Hi ..!
We have PSV test bench in our central workshop & carry out PSV pressure testing as per API 576 on regular basis from our process plant.
Do we need to get our testing bench certified by a TPI on regular basis.
If yes, what is the governing standard, we need to follow for certification...
We have a A335 P22 Header (16" & 21.44 mm thick) at the outlet of a double pipe heat exchnager. The Header is horizontal & has 12 nos. pipe connections at the inlet on bottom side of pipe & 01 outlet pipe connection from the middle of header on the top side of header. This equipment was...
We have Rupture Disc + PSV combination installed on many equipment in our petrochemical facility.
However, experience is not good, many RDs are failing prematurely without overpressurization or overheating above the specs. As a result, PSVs are beingg kept in closed condition to avoid...
We have lots of piping (Insulated & Non Insulated) in our process plant, more than 9000 in number.
Issues of CUI inspection & remedial action there of, keep pressing us to evolve some effecitve inspection methodology.
1. Please suggest the best technique to inspect huge amount of piping to...
1. I am in search of a WPS for welding 11 mm thick pipe of A335 P22 with a pipe of HP Nb Modified material (35% Cr & 25% Ni) in the convection zone of ethylene furnace with zone service temperature at approx.900 Deg C.
2. Do I need to go for PWHT in this case?
This is urgent. Please help.
We have replaced the valves of some Nitrogen Cylinders.
What kind of pressure test we can carry out on these cylinders?
Can Pneumatic or Hydro Test be done on these cylinders?
Will it go as per ASME Section VIII Div 1 ?
If yes, how to create pressure inside the cylinders?
We are going to have a new water tube boiiler (NG Fired)at our site.
Currently, we need to store it for some period as the installation time is uncertain.
The Boiler has steam drum, water drum and many tubes connecting these 02 drums. We wish to preserve it for unknown period.
We are...
1)What's the temp limit for normal CS pipe & LTCS pipe?
2) Is the temp limit for product inside or pipe temp.?
3) What if the ambient temp swings from 50*c to -25*C.
Will it be required to go for LTcs for all cases or
need surface insulation?
We need to weld a 1/2" Monel-400 piping with a 1/2" SS-304 Valve.
Can some one suggest proper filler wire or a WPS to carry out this Butt weld joint.
Service temperature is 35 Deg C. & service pressure is 300 kg/cm.2
We need to weld a P22 Fitting with 35Ni-25Cr material. DO
we need a buttering layer to have a good quality weld.
Can any one sugest the WPS for this weld?
We are facing problem with MSRL (Mild Steel Rubber Lined)pipes in Caustic Service. The internal rubber lining is peeling off and choking the piping causing process problem.
Pipe sizes are 3", 4" & 6" and are being used for Caustic service ( 5% and 50 DegC) & H2SO4 Conc. 5 to 10% at ambient...
