What should you do if discover a valve with extreme blockage?
A. Contact a supervisor.
B. Use a rod-out tool to clear the blockage.
C. Contact the maintenance department.
D. Remove the valve and its associated piping from service.
A. Incorrect. In cases of extreme blockage, it may be necessary to remove the valve and its associated piping from service to clear the blockage.
B. Incorrect. In cases of extreme blockage, it may be necessary to remove the valve and its associated piping from service to clear the blockage.
C. Incorrect. In cases of extreme blockage, it may be necessary to remove the valve and its associated piping from service to clear the blockage.
D. Correct. In cases of extreme blockage, it may be necessary to remove the valve and its associated piping from service to clear the blockage.
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