If risk of inadvertent or unintentional operation of a valve, switch, breaker, or control device exists and
if such operation could cause either personnel injury or equipment damage, operation must be prevented by a tagout or lockout.
A tagout is defined as the placement of a tag on a breaker, switch, control device, or valve that states "DANGER
DO NOT OPERATE."
A lockout is defined as the installation of a physical barrier to operation such as a lock or the removal
of a connecting link to prevent operation of the component being worked on.
Tagout and lockout procedures will be used as required to support maintenance or if equipment is suspected of presenting a hazard
to personnel or other equipment. Specific procedures are found in article 4005 of the LFORM
(LLE INST 3000). In summary,
Supervisor/maintenance personnel must determine the need for and then initiate the tagout. The tagout should
contain the reason for the tagout, and the Shot Director must approve the tagout.
Tags must be hung before maintenance is started. The tags should be securely affixed to the actual valve,
switch, breaker, or control device in a manner that ensures their visibility to anyone who might attempt operation. For equipment
or devices that do not have unique isolation switches or breakers, the equipment or device should be disconnected from its power
source if possible and a tag placed on the plug or connector. The individual placing the tags should sign each tag after
it is placed and then sign the tagout sheet when all tags are placed.
Maintenance can begin only after all tags are hung.
Tags must be removed before restoring or testing equipment.
Under no circumstances will tagged-out equipment be used without formally clearing all tags.
For additional information contact: Director's Administrator
University of Rochester-Laboratory for Laser Energetics, 250 E. River Rd., Rochester NY 14623-1299