Bracelet Anode Length
Bracelet Anode Length
(OP)
Hi,
Is there any limitation or minimum length of Half bracelet Anode?
FYI, we have one calculation that shows 180 mm of the anode length. The thickness of the anode (Aluminium Alloy) is 55 mm for 24" pipeline OD + 5.5 mm AE coating.
Is there any limitation or minimum length of Half bracelet Anode?
FYI, we have one calculation that shows 180 mm of the anode length. The thickness of the anode (Aluminium Alloy) is 55 mm for 24" pipeline OD + 5.5 mm AE coating.





RE: Bracelet Anode Length
Did you assume any holes in the coating?
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"Pumping accounts for 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Bracelet Anode Length
RE: Bracelet Anode Length
If its not fresh water, something's wrong. Can you post your calcs?
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"Pumping accounts for 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Bracelet Anode Length
RE: Bracelet Anode Length
RE: Bracelet Anode Length
The DNV spec is here. Have a look yourself.
http://e
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"Pumping accounts for 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Bracelet Anode Length
Now back to my question, is 180 mm for the anode length too short? Will it become problem during fabrication? The CPR is well below 5.
RE: Bracelet Anode Length
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Bracelet Anode Length
RE: Bracelet Anode Length
[color red]PLEASE READ the DNV code I gave you.,[/color]
SEE section 5.4.1, 5.6.1, 5.6.9
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"Pumping accounts for 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Bracelet Anode Length
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Bracelet Anode Length
I think I'll just give excess mass to the anode to get the minimum length that can be fabricated.
RE: Bracelet Anode Length
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Bracelet Anode Length
RE: Bracelet Anode Length
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Bracelet Anode Length
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Bracelet Anode Length
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Bracelet Anode Length
The insert dimension and the anode thickness will govern the minimum length of anode with due consideration for shrinkage and cracking.
If you are using DnV RP F103, you can actually increase the spacing more than 120mts [old requirement in RPB401].
Narendranath R
Pipeline engineering is made easy with state of the art computer software, visit www.narendranath.itgo.com.