I am trying to justify the ASME B31.3 classification of Normal Fluid service for 50% NaOH. The system design gauge pressure is below 150 psi and the design temperature is ambient. Sodium Hydroxide does not produce systemic toxicity; its health effects are due to its corrosive nature. However it does have a published LD50 of 100 mg/kg (oral Rat), which by OSHA/UFC definition makes it a toxic, leading to the possible classification of category M fluid service. If anyone has experience with this and can provide a literature reference to back up either classification it would be appreciated.
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Additive manufacturing, also known as 3D printing, is quickly becoming an industry standard for product manufacturing in a variety of applications, including medical devices, aviation and aeronautics parts, and transportation components. Download Now
The growing complexity of automotive systems is putting a large amount of pressure on their designers. Industry constantly pushes to add new features for comfort, entertainment, and safety, requiring a single vehicle to use an increasing number of communicating electronic devices. Download Now
Fly by wire, remotely distributed control, remote and automated piloting, and augmented reality are a few evolutionary achievements in flight control and guidance that further remove the potential of human error in flight control systems. Download Now