The following ESH document has been published and is in effect:

Chapter 51, "Control of Hazardous Energy", is a new chapter that replaces the interim Control of Hazardous Energy (CoHE) Procedure and the retired SLAC Lock and Tag Program for the Control of Hazardous Energy.

This new chapter meets the SLAC Worker Safety and Health Program requirement to develop a comprehensive lockout/tagout (LOTO) program compliant with Title 10, Code of Federal Regulations, Part 851, "Worker Safety and Health Program" (10 CFR 851). It also satisfies the multiple findings and corrective actions resulting from the Assistance Visit Electrical Safety - National Fire Protection Association 70E Assessment at Stanford Linear Accelerator Center, September 10-14, 2007, and the Lockout/Tagout Program Internal Independent Assessment, conducted in April 2008.

To address these corrective actions, SLAC formed a Control of Hazardous Energy Action Team (CoHEAT). CoHEAT developed and released a "Control of Hazardous Energy Program - Interim Procedure" in May 2008. This procedure documented the requirements for the control of hazardous energy at SLAC, guided users in the identification and understanding of lockout/tagout related hazards, and outlined when a procedure is required for work. The SLAC Lock and Tag Program for the Control of Hazardous Energy was retired concurrent with the release of this interim procedure and it was decided that additional guidance was necessary.

Shortly after the release of the interim procedure, CoHEAT, under the guidance of Don Dains, hazardous energy program manager, and Paul Bellomo, electrical safety officer, performed an extensive review of the program and developed this chapter.

Many requirements documented in the new chapter describe long-standing lockout/tagout practices at SLAC for all forms of hazardous energy, including electrical, thermal, mechanical, hydraulic, ionizing and non-ionizing radiation, pneumatic, and chemical.

The chapter specifies when a general lockout/tagout procedure, equipment-specific lockout/tagout procedure (ELP) or alternative energy control plan must be used.

Newly defined requirements include

• Refined roles and responsibilities for equipment owners, equipment custodians, authorized workers, affected workers, and workers who performs zero voltage verification on de-energized electrical circuits
• Clarified authorized worker certification requirements and separated the worker certification from the equipment-specific procedure re-validation
• Defined equipment-specific procedure requirements
• Authorization for alternative energy control plans that are used in place of lockout/tagout in laser, radiation, and radio frequency (RF) safety

This chapter replaces the interim procedure that took effect May 27, 2008. The interim procedure replaced the SLAC Lock and Tag Program for the Control of Hazardous Energy (SLAC-I-730-0A10Z-001).

To view the revision description and review history for this revision, go to https://www-internal.slac.stanford.edu/esh/docreview/reports/revisionhistory.asp?RevisionID=94

If you have comments you would like considered in the next revision, go to Review Type: Ongoing at the bottom of the left-hand pane and click on Add a comment.

For questions on the content of this chapter, contact, Donald W. Dains (http://www.slac.stanford.edu/contact/ddains).