Effective Hazard Recognition and Control - SAIF Corporation

Machinery hazardsLockout/tagoutWhen conducting a hazardassessment, it is importantto be on the lookout forrepair tasks where workersmay be exposed to variousenergy sources.If someone is performingmaintenance or repairsand a form of energy ispresent or storedit must be isolated ordissipated.Energy sourcesElectricity is the most common energy source associated with locking outa piece of equipment. Workers need to be protected against the accidentalenergizing of a circuit when repairs are being made.Stored hydraulic, pneumatic, and steam pressure can also pose significantrisks. Generally, such sources need to be dissipated or blocked off so movingparts are not activated.Suspended items (gravity) need to be blocked up while doing work.Spring tension needs to be blocked or released, and piped chemicals need tobe blocked off or drained.ElectricityPiped chemicalsSpring tensionSteam pressurePneumatic pressureGravityHydraulic pressure28 Effective Hazard Recognition and Control