Equation in edition 13 for estimating the (Required Minimum Level of Liquid to be maintained Inside Tank) written as;
(Gin x Hin) + Wbott / (p x R2)3 Gout × Hout =
noting that Hin in above equation is defined as (Height or Depth of Liquid Inside Tank).
Coming To;
Same Equation in edition 11...
Dears;
in reference to API 650, edition 13;
(1) DLS (shell dead load) defined as nominal (Shell + Any Framing (but not Roof Plates) supported by Shell & Roof) Weights; so I kept DLS as =
Nominal (Shell + (Roof Framing/Structure + C. Angle + W.G + Insulation +...
I understood that the Pre-set design internal pressure for your tank shall be adjusted base on the MIN(PF.4.1 , PF.4.2).
That is clear; if my tank is going to be mechanically-anchored; should ignore the value of calculated PF.4.2 & adjust the Tank design internal pressure base on PF.4.1 Only...
As per (5.1.5.9 (e)), for Self-Supporting Roofs FULFILLED conditions in 5.10.5 & 5.10.6 (Participating Area for Figure-F-2 selected detail ≥ (p D2 ÷ 8 Fa tanθ));
(1) On that case, is that mean, the Top Curb Angle IS NO LONGER REQUIRED?
(2) Participating Area (referred in 5.10.5 & 5.10.6) is the...
Table 5.19a—Section provide the (Z) Modulus (cm3) of Stiffening-Ring Sections with reference to Selected Detail from Figure 5.24, My question; How I can calculate the Actual Area required to estimate the weight of Wind Girder (either Top or Intermediate)?
Mohd Yaseen
(A) I have Understood that Top Curb Angle (Figure F.2) shall be provided if 5.9.5.2 condition met (Top Wind Girder (per Table 5.19a & Figure 5.24) is located more than 0.6 m below the Top of Shell) or in case of Open Tank.
Am I correct?
Also, when Top Wind Girder as per 5.9.5 shall be provided...
In F.6.1, to calculate the Minimum Roof Thick required for Internal Pressure (t), you required to estimate the P = Internal Design Pressure – Effect of Nominal Roof Dead Load.
- How to estimate the Effect of Nominal Roof Dead Load?
- I presumed that the (Internal Design Pressure)...
What is the equation for calculating the Cross-Sectional Area of the Cone?
As per 5.10.5 & 5.10.6, Cross-Sectional Area of Cone is required to be compared with the Participating Compression Area (hatched area calculated from Figure F.2).
Mohd Yaseen
In API 650 Edition 13th
(A) With regard to the (Shell-to-Roof) Junction Area, there are the following expressions;
1. Total Required Compression Area @ Junction calculated as in F.5.1.
2. (F.2.2 &/or F.4.1) stated that Participating Compression Area @ Junction determined by Figure F.2...
Our case as follow;
GRE (API 15LR) pipeline with 41 Km length & difference of elevation (141 m @ source, 13m @ 32KM from source, 22m @ 41KM).
Pipeline Design Pressure (DP) is 2MPa for the first 32KM & 3MPa for the rest 9KM.
The Contractor has execute hydrostatic pressure in sections (4 sections)...
Dears;
I had instructed our designer to consider FV for the vessel that directly delivering to pumps.
In my view, all vessels having pumps at its downstream (directly) or designed for flush-out (sand accumulation, etc.) shall be deigned for FV?
I am right? please correct me if am I wrong...
Dears;
I querying about any standard or reference that can a basis for the MOV (motor operated valve) Selection?
If not, How we can judge whether we need MOV or Manual Valve? in other way, when we use MOV over the manual valve?
Mohd Yaseen
Dears;
we are constructing new storage tank having the following data;
Design Code = API 650
Materials = A 283 C (Group I)
Design Temperature = 85C
Stressed Components include:
Shell = 12 mm, 10 mm, 8 mm
RF of Cleanout Door = 16 mm
RF of Flush-Type Shell Connections = 12mm (N9), 12mm (N10)...
Dears;
Our Contractor is seeking for changing our plant piping materials from SMLS to EFW.
As I know the Seam (EFW) pipes are used in low pressure and medium pressure applications while the SMLS is utilized for the high pressure application.
My queries;
1- To which value can I classify the...
Dears;
We have the following case;
Plant having first stage separator delivering the crude to the second stage separator, the second stage separator is directly connected to the high pressure export pumps (no buffer tank).
In my view the second stage separator shall be designed for external...
Dears;
Do I need to have an Isolation member (isolation joint , isolation flange or kits) between two lines constructed from dissimilar Metals specifically Carbon Steel And Duplex Stainless Steel.
For the same situation I have three cases;
1/ Both lines are running aboveground.
2/ One line...
For pipeline, When shall use Sacrificial Anode & when we shall use Impressed Current CP?
Our Contractor saying that they will use Impressed Current for our Carbon Steel pipeline, while they are plan for Sacrificial Anode for Duplex S.S trunkline.
Also they are saying no need for CP system for...
