Safety

The Two Types of Rules in NFPA 70E

Feb. 15, 2019

Working safely involves understanding that the rules alone don't protect you.

While NFPA 70E is not a rules-based system per se, it does contain rules. Not all of them carry the same weight, however.

Some carry the kind of weight you think of when thinking of rules. They are mandatory. These rules identify actions that are specifically required or specifically prohibited [90.5(A)]. An example is this rule:

“Equipment safeguards for employee protection shall be tested to ensure they are in a safe working condition” [310.15(D)(12)]. Notice the word “shall” in that rule.

The other kind of rule is the permissive rule. These are rules that identify actions that are allowed but not required. These also have the word “shall” but in one of two longer phrases: “shall be permitted” or “shall not be required.” These occur at a far lower frequency than the mandatory rules, but an example is:

“Electrical lockout/tagout devices shall be permitted to similar to lockout/tagout devices for control of other energy sources, such as pneumatic, hydraulic, thermal, and mechanical, if such devices are used only for control of hazardous energy and for no other purpose" [120.2(D)(3)(d)].

And always keep in mind that rules alone don’t protect you. Your awareness and discipline are key [110.1(C)].

About the Author

Mark Lamendola

Mark is an expert in maintenance management, having racked up an impressive track record during his time working in the field. He also has extensive knowledge of, and practical expertise with, the National Electrical Code (NEC). Through his consulting business, he provides articles and training materials on electrical topics, specializing in making difficult subjects easy to understand and focusing on the practical aspects of electrical work.

Prior to starting his own business, Mark served as the Technical Editor on EC&M for six years, worked three years in nuclear maintenance, six years as a contract project engineer/project manager, three years as a systems engineer, and three years in plant maintenance management.

Mark earned an AAS degree from Rock Valley College, a BSEET from Columbia Pacific University, and an MBA from Lake Erie College. He’s also completed several related certifications over the years and even was formerly licensed as a Master Electrician. He is a Senior Member of the IEEE and past Chairman of the Kansas City Chapters of both the IEEE and the IEEE Computer Society. Mark also served as the program director for, a board member of, and webmaster of, the Midwest Chapter of the 7x24 Exchange. He has also held memberships with the following organizations: NETA, NFPA, International Association of Webmasters, and Institute of Certified Professional Managers.