Author: Allen L. Clapp, P.E.


The Importance of Matching Evidence Marks in Accident Investigations

I have personally investigated more than 800 incidents involving serious permanent injury, death, equipment failure and structural failure. Time after time, we were pulled in late to assist with investigations in which early investigators had failed to properly investigate the incidents. They had jumped to erroneous conclusions, thus resulting in incorrect admissions, strategies or other actions in the related litigations. When properly analyzed, each incident was shown to have occurred differently than originally assumed, and often a different party or action was the precipitative cause. Finding...

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Accident Analysis Using the Multi-Employer Citation Policy

OSHA regulations are promulgated under the Occupational Safety and Health Act of 1970, as amended. In accordance with the regulations, employers are obligated to provide both safe work and safe workplaces. They must adhere to requirements for training, supervision, discipline, retraining, personnel protection, job planning and job control. Section 5 of the OSH Act – also known as the General Duty Clause – requires both employers and employees to do their part to adhere to OSHA regulations. Although present statutes do not allow OSHA to fine employees who violate regulations, employees are required...

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NESC and ANSI Z535 Safety Sign Standards for Electric Utility Power Plants and Substations

Both the NESC ANSI C2 rules and OSHA regulations require signs at appropriate places around utility facilities and workplaces. ANSI Z535 standards that specify the attributes of appropriate safety signs and labels for utility use include ANSI Z535.2: Environmental and Facility Safety Signs, ANSI Z535.3: Criteria for Safety Symbols and ANSI Z535.5: Safety Tags and Barricade Tapes (for Temporary Hazards). The coordinated ANSI Z535 criteria apply to every temporary or permanent safety sign or tag on a utility system. Recent Format ChangesSafety signs are comprised of a signal word panel and a message...

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