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Case Study 3: Replacement of Nitrogen Pressure Vessel Seals
Incorrect. In this case, the Lockout/Tagout
standard would apply.
The potential for unexpected release of hazardous energy from
the nitrogen pressure vessel existed during this operation and posed the risk of
injury to the employees.
The employer should develop and implement an energy control
procedure meeting the requirements of
1910.147(c)(4). This would ensure that all hazardous energy is
identified and secured at the energy isolation points, that internal pressure is
safely relieved from the nitrogen pressure vessels, and that there is no
potential for energy reaccumulation during the maintenance operation.
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