Observation. - std55050092

DOE-EM-STD-5505-96

techniques.

6.10.3 Observation. The following special activities and operations could demonstrate

Independent Verification:

The alignment of valves and switches in preparation for system startup, maintenance, testing,

and prior to return to service

Verifying the status of a system or component which is in doubt

Some of these events will be listed in the activity plan of the day or plan of the week. Other

situations that require Independent Verification will be event driven. If an Independent

Verification is not scheduled to occur during the assessment, the assessor should ask the activity

manager to arrange a demonstration or a walkthrough of the procedure.

When observing Independent Verification, the assessor should see some form of time-distance

spacing between the two verifiers. Remember that an independent check is required. Time

spacing means that the two verifiers should not check a component at the same time. Distance

spacing means that neither verifier should be able to see the other check the component.

To observe two operators conducting a system alignment that requires Independent Verification,

the following methodology could be used:

Accompany the first operator as he aligns the system as listed on the checksheet. Observe the

use of the checksheet and the operator's skills and abilities concerning locating and operating

system components.

Once the system has been aligned by the first operator, observe any communication between

the first and second operators, and follow the second operator as he verifies the position of

system components. Pay particular attention to the use of the checksheet, the operator's skills

and abilities concerning locating system components and verifying their component position,

and the independence of the second check from the original alignment.