The two best sites for maintenance and predictive maintenance information at no cost to you.
Reliabilityweb.com provides resources and solutions for maintenance & reliability professionals from around the world. This site includes links to many valuable maintenance resources.
http://www.reliabilityweb.com/ or http://www.rcm-1.com/
The Plant Maintenance Resource Center is the premier web resource for industrial maintenance professionals. This site includes links to many maintenance valuable resources.
Other maintenance sites that are helpful…
Maintenance world is a resource for maintenance management and reliability information.
NetexpressUSA Inc. is the home of the Reliabilityweb.com Network of Maintenance and Reliability web sites.
Handbooks in physics,thermodynamics, math, instrumentation and etc
Online Approved DOE Technical Standards http://energy.gov
Click on "Offices" go to Office of Health, Safety and Security (HSS) is the Department of Energy’s (DOE)
Go to "Information Center" and Click on "DOE Technical Standards Program"
Click on "Approved standards"