PIPE FITTING TO SELECT
PIPE FITTING TO SELECT
(OP)
Dears,
I have pipe API 5L Gr.70 , so,
which pipe fitting specification use for this ( tee , elbows spec)
This is to construct a tank capacity of 261 m3 . The pressure inside is 90 bar (temp = 60 degree Celsius).
my pipe thickness is 15.9 is this withstand the pressure .
I have pipe API 5L Gr.70 , so,
which pipe fitting specification use for this ( tee , elbows spec)
This is to construct a tank capacity of 261 m3 . The pressure inside is 90 bar (temp = 60 degree Celsius).
my pipe thickness is 15.9 is this withstand the pressure .





RE: PIPE FITTING TO SELECT
Are you creating a "tank" from pipe?
Normally you will need F70 grade fittings if the same size as the pipe.
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Also: If you get a response it's polite to respond to it.
RE: PIPE FITTING TO SELECT
pipe placing parallel and 1.5 meter distance
for connecting pipe i have to use elbow or 180 degree bend
in my design pipe is reduced at the bend so can you please suggest the reducer size ,
RE: PIPE FITTING TO SELECT
RE: PIPE FITTING TO SELECT
RE: PIPE FITTING TO SELECT
shamnas,
It would help if you sent a sketch of what you are trying to do?
Sometimes its possible to do all the right things and still get bad results
RE: PIPE FITTING TO SELECT
RE: PIPE FITTING TO SELECT
Also what design code and what fluid?, liquid or gas?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: PIPE FITTING TO SELECT
RE: PIPE FITTING TO SELECT
Why a safety on the exchanger?
Design pressure? design temp? What fluid? what cooling/heating fluid?
RE: PIPE FITTING TO SELECT
Design Temp = 60 degree celcius
Fluid = Natural Gas ( Fuel Gas )
Inside Storage we have maintain 60 degree Celsius, so there is a trace heating
This is a storage Tank(capacity 261 m3). when the system shutdown from storage tank it will supply gas to Plant.
RE: PIPE FITTING TO SELECT
< in my design pipe is reduced at the bend so can you please suggest the reducer size >
That depends on how much flow this system has to supply to the plant. The gas flows from the outlet to the plant and for the upstream segments, the gas has to travel through the various return bends. A quick hydraulic calculation should give you an idea what you are looking at. Remember as you supply gas to the plant and the pressure drops, the pressure drop across the bends as the gas is expanding and flowing out is going to increase, I don't know what your lower operating pressure range is.
< Inside Storage we have maintain 60 degree Celsius, so there is a trace heating >
Why? Is that the expected dewpoint of the gas? That's a lot of pipe to heat trace and insulate at an additional cost. If it's a dewpoint issue, why not let the liquids condense and be drained off as needed?
RE: PIPE FITTING TO SELECT
In my design i put a main line then coneecting by a tee,
RE: PIPE FITTING TO SELECT
What is the maximum velocity flow through a HDPE pipe ?
For CS pipe 20 m/s is the limit !
RE: PIPE FITTING TO SELECT
High velocities of gas >20m/sec are normally to be avoided if you can as the pressure drop becomes very high per unit length and you risk erosion over time at bends, tees, elbows etc.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: PIPE FITTING TO SELECT
a) What design code should be used for this pipe assembly to reduce wall thickness: is it B31.1, or B31.3 or B31.8 ? Is there a justification for using B31.1 -which is meant for power plant piping.
b) Why is this pipe assembly heat traced : Is it because the depressure profile during supply mode shows a low temp which is beyond the min temp limit for the downstream user? Heat tracing wont help here, you've got to add on a heater to maintain the min temp required - also keeping the pipe assembly above ground helps a bit, but hardly.
c) Current plan is to use API 5L Gr 70 : - is this good for the MDMT or lower design temp assigned for this assembly - we cannot take credit for heat tracing for this reason either. Given this is a complicated pipe assembly to simulate for the purposes of deriving min metal temp, an appropriate simulation program should be used ( not the standard version of Hysis or Pro II or similar).