NIST incorporated previous feedback from an initial public consultation into the final draft and the comment period for the proposed updates will close before March 10, the agency said Tuesday.
NIST intends for the new draft to address the specific security requirements of ICS users such as utilities, chemical companies, food manufacturers and automakers.
The security guide contains instructions on how to protect computer-run industrial systems from attacks, equipment failures, errors, malware and other threats.
NIST wants to revise the sections on ICS threats and vulnerabilities, risk management, recommended practices, security architectures and security tools in the second draft.
The proposed guide also contains a new appendix that customizes guidance on applying security controls and control enhancements.