Quantcast Basic Considerations for Material Selection for Process Service
 

Click here to make tpub.com your Home Page

Page Title: Basic Considerations for Material Selection for Process Service
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Introduction cont'd
Up
Design Considerations - index
Next
Welding, Fabrication, Examination, and Testing


DOE-HDBK-1132-99
An acceptable materials selection process evaluates at least the performance,
maintenance, service life, quality control requirements, life-cycle cost, inspection,
and reliability requirements necessary to minimize/prevent component failure or
degradation from all known mechanisms. This involves a literature review, tests,
weldability, code approval, availability of product forms and an industrial base,
identification of the critical parameters and limits, and properly prepared material
specifications that address the applicable failure and degradation mechanisms.
Basic Considerations for Material Selection for Process Service . When determining
5.2
an appropriate material for a specific process service, the following considerations
should be evaluated:
Establish the design life and performance requirements for process system
components such as vessels, tanks, heat exchangers, piping, valves, and
pumps.
Define the expected or actual stream analysis of the process flow. The stream
analysis should include constituent partial pressures, percent chemical species
by weight/volume, flow velocities, and contaminant levels. Possible upset
conditions, including startup and shutdown environmental conditions, should be
considered.
Define the expected operating pressures and temperatures of the process
streams. Startup and shutdown conditions, as well as possible special operating
conditions like steam-out cleaning of equipment, should be considered. Possible
brittle fracture and fatigue failure of materials should be considered.
Identify the desired material mechanical properties. The mechanical properties
to consider include tensile and yield strength at design temperature, hardness,
fatigue strength, creep strength, toughness, desired wear, and corrosion
Establish the calculated or expected design radiation dose over the design life of
the system. This is important for polymeric materials, which include thermosets,
thermoplastics, and elastomers due to possible degradation effects. Additionally,
consideration of detrimental off-gassing from nonmetallic materials in tritium
service should be included.
II-56


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.