What key item was missing in the maintenance records reviewed by HSO Hernandez?

The key item missing in the maintenance records reviewed by HSO Hernandez is the service testing records. Service testing records are crucial in ensuring that equipment and systems are functioning as intended and meet safety standards. These records typically document the results of tests conducted on machinery, tools, or systems to confirm that they are operational and safe for use. Absence of these records can lead to risks in workplace safety, as it may indicate that essential maintenance and testing have not been properly performed or documented.

Proper maintenance and testing provide data that can aid in determining the reliability and safety of equipment over time. Without documented service testing records, it becomes challenging to assess the status of equipment, leading to potential hazards that can endanger personnel or the facility. This oversight highlights the importance of thorough record-keeping practices in safety management and risk assessment within the Department of Defense (DoD) health and safety framework.