Hydrostatic test pressure assessment 3

[FIF99]

Hi,

At our office we don't have the design code BS-8010 part 1 (which seems to be superseeded now). However, I'm looking for the formula to assess the hydrostatic test pressure of piping systems.
Anybody who can give me the formula, or refer me to it?
Thanks in advance.

Best regards,
FKE

 

[ticku]

Hydrostatic testing is done at 1.5 times the design pressure. If you are going to do a in field hydro, make sure you can isolate that pipe spool.

 

[BigInch]

ticku, Check your code first. BS-8010 was the Brit pipeline code, so I would really be surprized if tests are conducted at 1.5 X. Usually pipeline hydrostatic tests have different test pressure factors depending on the location and type of facility being tested.


BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[zdas04]

If you'll look at

http://www.muleshoe-eng.com/sitebuildercontent/sitebuilderfiles/safetystdstatictest.pdf

there is a document that talks a lot about the issues around testing. It focuses on U.S. codes, but there is a lot of informaiton on how and why to do a test. It might be useful.

David

 

[BigInch]

You need to get a copy of the codes, more info,



In 2000, the International Organization for Standardisation published ISO 13623: Petroleum and Natural Gas Industries Pipeline Transportation Systems. CEN has decided to develop a Europeanmodified version of ISO 13623 designated EN 14161. EN 14161 will not include gassupply pipelines on land, which are covered by an existing CEN Standard issued in the UK as BS EN 1594. The title of EN 14161 will be Petroleum and natural gas industries pipeline transportation systems (ISO 13623:2000 Modified). The agreements between CEN and all national Standards’ organizations of the EU member states will result in EN 14161 superseding national Standards and consequently BS 8010 is withdrawn.


BigInch-born in the trenches.
[URL unfurl="true"]http://virtualpipeline.spaces.msn.com

 

[FIF99]

Hi,

Thank you all for your input. So far I have concluded that ticku is indeed correct. Hydrotest pressure is 1,5 * design pressure.
The code is now replaced by BS-EN 14161, however, the superseded BS-8010 prt.1 is still valid for our project.

Best regards.
FKE

 

[BigInch]

Does EN 14161 differ from BS 8010 in testing requirements for different areas or for various facilities on/along the pipeline?

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[rconner]

While I'm not sure how all "codes" come down on this particular issue, I think it should be remembered some piping systems could conceivably be composed of quite complex mixes of pipes, fittings, valves, outlets, couplings, other devices, well as all manner of joints, gasketing systems for joints, welding schemes, anchorages and restraints involving these items etc. When it comes to applying a test or operating/transient pressure scenario to a particular piping reach, it can be argued that the weakest item/aspect controls (analogous perhaps to the old adage, "A chain is no stronger than its weakest link"). It would appear the best time to think about all this is up front when same are specified.

 

[BigInch]

Usually for (petro) pipelines the test pressure is shown on the alignment sheets and also appears on the hydrotest plan drawings. Maybe he's checking those things.

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com