|Chapter 6110 Lock, Tag, Try (LTT) Program|
Lock, Tag, and Try (LTT) is the approved method for securing hazardous energy sources in order to provide personal protection while performing maintenance and service work. Refer to Environmental, Safety, and Health (ES&H) Manual Chapter 6111 Administrative Control Using Locks and Tags for administrative control applications.
This program satisfies the requirements of OSHA 29 CFR1910.147 The Control of Hazardous Energy (Lockout/Tagout); the standard used when servicing and maintaining equipment/systems.
Jefferson Lab's construction subcontractors follow OSHA 29 CFR1926 Safety and Health Regulations for Construction; which is the standard for construction work activities. Subcontracting Officer's Technical Representatives (SOTRs) are tasked with reviewing subcontractors programs for compliance.
LTT is required whenever there is the potential for someone to be injured by the unexpected start-up of equipment or by a release of stored energy during maintenance and service work. Some typical situations are when:
Table 1: Required LTT Training by Job Classification
T1 Lock, Tag, Try (LTT) Procedure
ES&H Manual Chapter 6110 Appendix T1 Lock, Tag, Try (LTT) Procedure contains the guidelines for locking and tagging out of hazardous energy sources when maintenance or service work is to be performed. LTT references in this appendix apply to maintenance, service, and construction applications. Refer to ES&H Manual Chapter 6111 Administrative Control Using Locks and Tags for administrative configuration control applications.
Configuration management requirements for equipment specific LTT procedures include:
Lock, Tag, Try (LTT) Multiple Energy Form: Click for Word Document
T2 Special Lock and Tag Removal Procedure
In accordance with Jefferson Lab procedures (ES&H Manual Chapter 6110 Appendix T1 Lock, Tag, Try (LTT) Procedure and ES&H Manual Chapter 6111 Administrative Control Using Locks and Tags) a lock and/or tag is removed only by the Qualified Tagger who placed it on the equipment, or an authorized person in the administrative control scenario. If the Qualified Tagger is unavailable, or the information is missing or illegible, ES&H Manual Chapter 6110 Appendix T2 Special Lock and Tag Removal Procedure is utilized.
Special Lock and Tag Removal Form: Click for Word Document
T3 Group Lock, Tag, Try (LTT) Procedure
ES&H Manual Chapter 6110 Appendix T3 Group Lock, Tag, Try (LTT) Procedure provides members of a group a way to secure hazardous energy sources with protection equivalent to that provided by the individual procedure outlined in ES&H Manual Chapter 6110 Appendix T1 Lock, Tag, Try (LTT) Procedure.
Group Lock, Tag, Try (LTT) Form: Click for Word Document
Note: Management authority may be delegated to a task qualified Jefferson Lab employee at the discretion of the responsible manager.
Anyone at Jefferson Lab
Subcontracting Officer's Technical Representative (SOTR)
Group LTT Coordinator
Electrical Safety Engineer
NOTE: Questions concerning outsiders' actions and knowledge of LTT procedures should be made to the Electrical Safety Engineer. See also ES&H Manual Chapter 3410 ES&H Aspects of Procurements
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