first, there has to be a written procedure.........
Energy control procedure.
1910.147(c)(4)(i)
Procedures shall be developed, documented and utilized for the control of potentially hazardous energy when employees are engaged in the activities covered by this section.
second, as an authorized person, you must have documented training.......
Training and communication.
1910.147(c)(7)(i)
The employer shall provide training to ensure that the purpose and function of the energy control program are understood by employees and that the knowledge and skills required for the safe application, usage, and removal of the energy controls are acquired by employees. The training shall include the following:
1910.147(c)(7)(i)(A)
Each authorized employee shall receive training in the recognition of applicable hazardous energy sources, the type and magnitude of the energy available in the workplace, and the methods and means necessary for energy isolation and control.
1910.147(c)(7)(i)(B)
Each affected employee shall be instructed in the purpose and use of the energy control procedure.
1910.147(c)(7)(i)(C)
All other employees whose work operations are or may be in an area where energy control procedures may be utilized, shall be instructed about the procedure, and about the prohibition relating to attempts to restart or reenergize machines or equipment which are locked out or tagged out.
Third, notification of affected personnel is required............
1910.147(c)(8)
Energy isolation. Lockout or tagout shall be performed only by the authorized employees who are performing the servicing or maintenance.
1910.147(c)(9)
Notification of employees. Affected employees shall be notified by the employer or authorized employee of the application and removal of lockout devices or tagout devices. Notification shall be given before the controls are applied, and after they are removed from the machine or equipment.
now LOTO can take place.........
1910.147(d)
Application of control. The established procedures for the application of energy control (the lockout or tagout procedures) shall cover the following elements and actions and shall be done in the following sequence:
1910.147(d)(1)
Preparation for shutdown. Before an authorized or affected employee turns off a machine or equipment, the authorized employee shall have knowledge of the type and magnitude of the energy, the hazards of the energy to be controlled, and the method or means to control the energy.
1910.147(d)(2)
Machine or equipment shutdown. The machine or equipment shall be turned off or shut down using the procedures established for the machine or equipment. An orderly shutdown must be utilized to avoid any additional or increased hazard(s) to employees as a result of the equipment stoppage.
1910.147(d)(3)
Machine or equipment isolation. All energy isolating devices that are needed to control the energy to the machine or equipment shall be physically located and operated in such a manner as to isolate the machine or equipment from the energy source(s).
notice the last word - source(s)
here is a link to OSHA.........
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9804&p_table=STANDARDS
please follow the rules and go home safe........good luck