Fluid Categories

http://materials-welding.blogspot.co.uk/2010/07/re-mw5844-m-fluid-d-fluid.html

There are more than two categories.

You are right that there are more than two Fluid categories -

CatD/CatM/High Pressure/High Temperature/Normal/High Purity.

Actually the selection criterion depends on the usage rather than Specific Application but how one can determine this. Please explain briefly if possible.

Thanks....

Hi Mr Sachin.

Yes, please review ASME B31.3 Appendix M

"Guide to classifiying fluid service"

Remember that there are factors you have to take in accordance with the Engineering Department and the HSE department.

Also review Appendix V.

WP

Toxicity is a function of dosage. The LD50 for water in humans, for example, is around 18 gallons (100kg). The same for plutonium is around 7 picogrammes. However, one can drown in rather less than 100kg of water.