Verifying Locked/Tagged Components

DOE-STD-1036-93

4.3.7

Verifying Locked/Tagged Components

Components that are danger tagged in accordance with the facility's

lockout/tagout procedure must NOT be manipulated in the performance

of an operating procedure or for the purpose of independent verification.

If such components are encountered during independent verification, the

verifier SHOULD NOT attempt to physically verify the position. The

verifier SHOULD verify that the correct component has been identified,

determine the required position in accordance with the procedure,

determine the position of the component as recorded on the danger tag,

and use all other appropriate methods to verify that the component is

positioned as stated on the danger tag (e.g., observe process parameters,

remote indicators, etc.). Additional information relating to locked/tagged

equipment is contained in DOE Order 5480.19, Chapter IX, "Lockouts

and Tagouts," and in DOE-STD-1030-96, Guide to Good Practices for

Lockouts and Tagouts.

4.3.8

Resolving Inconsistencies Discovered during Independent

Verification

The underlying principle of independent verification is that anyone can

make a mistake. This also means that any inconsistency identified by the

verifier could be the verifier's mistake. The verifier should NOT change

the position or status of a component to correct an inconsistency.

Whenever an inconsistency is discovered, the verifier should immediately

stop and notify the appropriate supervisor. Facility procedures should

identify the supervisory position responsible for resolving independent

verification inconsistencies.

When informed of the inconsistency, the supervisor should resolve the

issue (e.g., by physically verifying the position of the component in