Below are Technical Papers and Letters on various piping topics.

Document Library

Name		Description
	Flange Bolt Selection	Flange bolt selection for corrosive envionments.
	B31.3 Category M Fluid Service	A suggested method for determining Category M fluid services.
	Non-Hygienic Piping Material Inspection Requirements	Inspection requirements for non-hygienic pipe material in a pharmaceutical environment.
	Pipe Material for Oxygen Service	Material selection for piping to be used in oxygen service.
	Design Pressure_Test Pressure_PSV Set Pressure	The relationship between design pressure, test pressure, and PSV set pressure.
	Weld Maps	The need for welds maps. Are they a requirement for hygienic piping?
	Leak Testing and Code Selection	Code selection and variations among Codes on leak test requirements.
	Hubless Pipe Size Issue	Above 8" NPS the hubless joint becomes a possible integrity issue.
	Code Compliance	Why we need to comply with Code requirements.
	Hydrogen Piping Material	Selecting piping material for hydrogen service.
	Hydrogen Ignition	How to mitigate the possibility of auto-ignition in hydrogen service.
	Lined Pipe Triboelectric Accumulation	Preventing the build up and discharge of static electricity in line piping systems.
	Nitrogen Leak Issue	Preventing gaseous leaks when using stub-ends.

W. M. Huitt Company