One of our client requirements is to provide a shell manhole for IFR inspection. This manhole will be place on the shell at 3m elevation from the bottom plate.
They tanks will be equipped with a Carbon Steel Full Contact Floating Roof. Class I products are considered to be stored in these...
For a ASME Sec VIII div 1 vertical vessel, is there any dia and height limitation, Why my concern is due to the space constraints we have a requirement of vertical vessel having 400 m3 capacity. So the vessel dimension will be 6m(dia) x 12m(height). i couldn't find any size limitation mentioned...
Dear All,
I need your advice on how to calculate the external design pressure for a API 650 tank, tank details are as follows:-
Tank Size - 30m (dia) x 25m (height)
Service - Aviation Fuel
Internal Design Pressure - 13 Kpag.
Remarks - The internal design pressure is finalized based on the...
Dear All,
What is the acceptable buckling range for the External Floating Roof(EFR)Deck Plates.
In my Double Deck EFR, The buckling is occurred due to the weld imperfection, I would like to know the acceptable criteria/limit for the buckling. The buckling is happened in the bottom side of EFR...
We are modifying an Existing vessel (20 years old), Modification scope is replacing the existing boot with new one of large size. I would like to know after modification wheather the vessel can be done for the full hydro test or only the modified portion to be hydro tested.??
I want to modify an existing vessel, Vessel Length 10m (T/T) And Dia 3.5m.
Saddle analysis is failing since the bending stress at the horn of saddle is failing for the operating case.
I have checked in in the Dennis-R-Moss, And is mentioned that stiffener can be provided to reduce the bending...
for the existing vessel (build in 1999) having dia 3m and Length (T/T) 8m.
this vessel to be modified to meet the new process requirement.
Calculation is not available, So i tried to design using PVElite. When i run the calculation for the saddle anlaysis in operating condition the below...
I would like to know that for a horizontal pressure vessel having shell thickness of 14mm only.
1. Whats will be the maximum allow nozzle neck thickness, Is there any maximum limit in ASME Sec VIII Div 1.?
2. Is it allow to use nozzle with thickness of 20 mm?
In actual case i want to design...
i need to design boot for Pressure vessel using PVElite,
So i design the boot as nozzle and instead of flange i put dished end.
My concern is since the boot height is very large i need to provide stiffener ring (minimum two no.).
Anyone please advise me how to insert this stiffening ring for...
Existing pressure vessel build in 1998, Design code is ASME Sec VIII. Div I, ED 1995- Add. 1996.
Now we need to modify this vessel (replacing of existing boot with bigger one.), The design calculation is not available with the client. Hence i need to run the new calculation as per the existing...
For an API 650 tank, with dimension 12(D)m x 20(H)m. Bottom shell course of A36 with 10mm thickness.
Tank is provided with anchor chair and also RF pad considered for this anchor chair. and there are two nozzle N1 & N3 (let say inlet as N1 and Outlet as N2).
My concern is that the clearance...
I have check in API 650 for Tank Roof Types, And i found that only four types are available as per 650, ie:- Supported Cone Roof, Self Supported Cone Roof, Self supported dome roof, self-supporting umbrella roof and Aluminium Dome Roof. I didn’t find any design / details of Supported Dome Roof...
I have check in API 650 for Tank Roof Types, An i found that only four types are available as per 650, ie:- Supported Cone Roof, Self Supported Cone Roof, Self supported dome roof, self-supporting umbrella roof and Aluminium Dome Roof. I didn’t find any design / details of Supported Dome Roof...
ASME SEC VIII double walled vessel with 3m dia and 9m (T-T)vertical tanks, design pressure of 20bar and deign temp of -190oC to +40 oC. & Storage medium liquid nitrogen.
My concern is wheather manhole is required for these tanks.
I have gone through the code and it is not specifically...
For a vessel of 3.350 m dia & 26.200 m length (T-T) and design pressure of 20 bar, So the approximate shell thickness will be 24mm by considering 3mm corrosion allowance.
i need to know the approximate tonnage for the above mentioned Pressure Vessel in empty condition.
Can any one help me to...
Dear All,
For a tank designed as per API 650, Tank dimension is 30m Dia and 25m height. After hydro-testing the tank the settlement reading is quiet confusing.
Due to the differential settlement the plumbness on the shell is 115mm.
When i go through API 650, As per clause 7.5.2 the maximum...
Dear All,
While i running vessel design calculation in PV Elite, For 4" Nozzle the calculation shows Dn/Tn is < 20 . Which is beyond the limitation of WRC 297.
My concerns are:-
1. Whether FEA analysis required for this 4 inch nozzle.??
2. Since the Dn/Tn is less than 20, So no need to...
Dear all,
Please help me to resolve below issue:-
Scenario:-
In a API 650 Tank, Bottom Shell plate of 30mm thick. Tank dia more than 20m and height 30m.
13 nos nozzle located on the shell plate as shown in the attachment.
My concern is :-
1. How to check the integrity of shell plate.
2...
Dear All,
Recently i came to know about the PLR types ie., Wet Type PLRs & Dry Type PLRs.
As per my understanding the arrangement of kicker line is the main difference of these two type.
If anyone provide me more details on these types (Wet & Dry Types) are really appreciated.
Thanks in...
Good Morning all,
please put forward me some ideas regarding the selection of Internal Floating Roof (IFR)for below points:
1.For Crude oil service, which type of IFR is more suitable?
2.Aluminium or Carbon Steel, which material is more suitable for IFR for crude service?
Tanks in Advance.
