Blog

Jan 24, 2024

Better understanding hazardous energy control

Responding is Todd Grover, global senior manager for applied safety solutions,

Responding is Todd Grover, global senior manager for applied safety solutions, Master Lock Co. LLC, Milwaukee.

Answer: The expectation that machines are locked out to prevent them from suddenly starting up while people are working on them has been around since the 1980s. OSHA's 29 CFR 1910.147 standard was heavily based on ANSI's original Z244.1 Lockout Standard, first published in 1982. The new ANSI/ASSE Z244.1 (2016) standard is a significant expansion of previous lockout best practice guidance. OSHA has provided no definitive updates or substantial changes to the 1910.147 regulation in the more than 25 years it has been in effect. ANSI, on the other hand, has reaffirmed or revised Z244.1 every five years to continuously improve this important safety practice.

The new ANSI Z244.1 standard provides a plain-language approach that describes how a variety of proven energy-control practices can be used by a wide range of industries. The standard addresses the needs of both small and large employers with varying levels of technology in their workplaces. New and expanded information includes:

Lockout needs to be the default protective measure applied for situations in which the task is not well understood or properly assessed for risk. The new standard provides detailed guidance on when, if and how a range of alternative controls could be applied to improve protection for people performing specific tasks.

The ANSI Z244.1 committee believes fatalities or serious injuries related to the sudden release of hazardous energy are completely preventable. The newly revised standard provides the latest information on achieving acceptable levels of risk by knowledgeably applying conventional lockout, tagout or well-determined alternative methods to prevent these avoidable incidents from occurring.

Editor's note: This article represents the independent views of the author and should not be construed as a National Safety Council endorsement.

Safety+Health welcomes comments that promote respectful dialogue. Please stay on topic. Comments that contain personal attacks, profanity or abusive language – or those aggressively promoting products or services – will be removed. We reserve the right to determine which comments violate our comment policy. (Anonymous comments are welcome; merely skip the "name" field in the comment box. An email address is required but will not be included with your comment.)