Dear Friends
Appreciate your help in the Design Temp for tubes for SEC I.
We have HRSGs (Heat Recovery Steam Generators), designed as per Sec I..
The Design Temp of Super Heater Tubes (SA 231 T22) are set at much less than the Gas Flow Design Temperature.
Design Temp of Gas Flow
838 & 810 C...
Der Friends,
Would like to hear your views on the below international standards withdrawn, and hence their equivalent ones which can be used
1. BS 970 (Withdrawn)...Can BS EN 10089 be considered equivalent? (This EN 10089 is still under review, as I understand)...your inputs please
2. BS 2874...
Would like to have good articles on Criteria/Guides on Selection of Materials of Constructions for Pipe Lines,Pressure Vessels used in Hydrocarbon processing industries. Can someone help please? Thanks in advance.
Dear Goutam / mk3223: Noted your inputs. Can you throw some light on suitability of Thermodynamic type Traps for the current scenario? If its not suitable, recommended type of traps with or without any other system changes.
Specialists in this field, like M/s Spirax Sarco, can help?
We have a condensate draining system, to flooded risers. Thermodynamic type steam traps are used. We are experiencing Water hammering.
Thermodynamic type traps are not suitable for such system? Which type is the most suited for discharge to flooded system. Thermostatic Balanced pressure or...
We have a pressure Vessel ID 5,029mm X 12,920mm OAL x 24/20mm Thk – SA 516 Gr.60N + HIC, Originally Designed as per Div 1 with MDMT of -2 Deg C, U stamped.
There is a Process Requirement to Revise the MDMT to -29 Deg C.
For the new MDMT, the vessel need to be "R" Stamped.
We have the following...
As a General Guide lines for the "Recommended Max. Temp. Limits" for different materials (Like A105, A182, A387 etc), which is the recommended document to look for? (THIS IS THE QUESTION)
IN THIS REGARD, FOLLOWING ARE THE TWO DATA / DOCUMENT. KINDLY ADVISE WHICH IS MORE APPRORIATE
1. Table...
As a General Guide lines for the "Recommended Max. Temp. Limits" for different materials (Like A105, A182, A387 etc), which is the recommended document to look for.
1. Table A-1M of ASME B 31.3 (Basic allowable stresses in tension for metals)
2. Table 1A of ASME Section II Part D (Max...
For the LP..
Fuel Gas Drum, MDMT (design)is -2 Deg C (27 Deg F)…..with Shell / Head Materials in SA516-60N + S5 + HIC..with Shell thickness (20 mm Top …24 mm Middle…20 mm Bottom and 24 mm thick Heads)
As we understand, SA 516 -60 material can sustain temperature upto (-29 Deg C)
Would like...
thanks for the inputs..however, my thought process is like this
ASTM A320 L7M grades mandatorily goes through Charpy Impact test (due to its low temperature service applications).
As you are aware, this test determines the total amount of Energy that is absorbed by a material during fracture...
We have a Fuel Gas line, 60", Design Temp (93 Deg C Max. (-)19 Deg C Mini), Design Pressure 40 Bar.
One Flange joint is originally having ASTM A320 L7M Stud Bolt.
Can we use ASTM A193 B7 stud bolts for this service, in place of original ASTM A320 L7M?
Gentlemen...All the process conditions across the strainers were found satisfactory. No vibration or sonic velocity issues.
Its Dry Gas which is passing through the strainer. The Mesh Element is secured to the Perforated Plate. The Assembly fixed with RTJ Flanges.
Enclosed is the details of the...
Jewell, Certainly not...no piping work have been done recently.
We repair the strainer, by installing / replacing the 100% fresh Mesh...but again within a month again the failure happens..
We have an online strainer element (basket type), horizontally installed, Dry Gas at inlet.
We are experiencing frequent failure of the Mesh (80 Mesh, SS 347).
Pressure drop across the strainer is satisfactory
Open Area calculation for the mesh, with respect to cross sectional area of pipe is...
