Confined Space Entry Permit (See ES&H Manual Chapter 6160 Confined Space Entry)

Jefferson Lab defines a "PRCS" to be any area that meets all of the following criteria:

• Sufficient space for a person to enter and perform work
• Limited/restricted means for entering/exiting
• Not designed for continuous occupancy
• An actual or potential hazard

Typical PRCS hazards include:

• A hazardous atmosphere
• Toxic materials that affect the skin or can be absorbed through it
• A material with the potential for engulfing a person or hindering quick escape
• Internal configuration that could trap a person

Entry is not allowed into a PRCS if there is a hazard that cannot be mitigated to RC<2 or lower by use of conventional controls (as listed on a permit). Inform the Confined Space Coordinator if this situation exists.

Work performed on AC electrical power distribution system at Jefferson Lab with equipment in an energized state requires an approved Energized Electrical Work Permit as described in ES&H Manual Chapter 6220 AC Electrical Equipment Safe Work Program. The permit establishes the justification for working on "live" equipment, the required training qualifications of the workers, and any unusual aspects of the work. Refer to ES&H Manual Chapter 6220 Appendix T1 Energized Electrical Work Permit (EEWP).

NOTE: Diagnostic work is permitted without an EEWP as long as it is performed in accordance with ES&H Manual Chapter 6220 AC Electrical Equipment Safe Work Program paragraph 4.1.2.

Work that presents an inherent risk of creating a fire is restricted at Jefferson Lab. Open-flame and spark-producing activities, such as welding or soldering, are authorized by a Hot Work Permit. Refer to ES&H Manual Chapter 6900 Appendix T1 Fire Protection: Hot Work Permit.

Activities which present the possibility of significant exposure to ionizing radiation are restricted at Jefferson Lab. Such activities are allowed only after careful analysis and planning to minimizing personnel exposure. Exposure must be As Low As Reasonably Achievable (ALARA). Refer to the Jefferson Lab Radiological Control Supplement.

Jefferson Lab's Radiation Control Group initiates and authorizes Radiological Work Permits (RWP). It informs workers of entry requirements and radiological conditions in the work area, and provides mechanisms to reduce worker exposure.

A Radiological Work Permit is required for any of the following situations:

• Anticipated radiation dose rate to the trunk of a worker's body - usually measured 30 cm (1 ft) from the work piece - is greater than 25 mR/hr.
• Total estimated dose to a worker exceeds 25 mrem.
• Workpiece measures 250 mR/hr or greater on contact.
• Entry into a posted contamination, High Radiation Area, or Airborne Radioactivity Area is necessary.

Contact Radiation Control at x7551 (876-1743 cell phone) to initiate a RWP.

See https://www.jlab.org/fm/Digging_Permit.pdf. Permits are required on JLab property for any mechanized excavations or any excavation using hand tools that penetrate the ground greater than 12 inches. Before the permit can be approved, a competent person must locate and mark the utilities.

See https://www.jlab.org/fm/Blind_Permit.pdf. Cutting/Drilling blind penetrations into walls, floors, and ceilings at Jefferson Lab requires a Floor, Wall and Ceiling Penetration Permit Request before work is performed. If you need to penetrate further than 1.5 inches into Concrete Masonry Unit (CMU) walls, through the thickness of gypsum-board sheet (self-drilling wall anchors do not require a permit), or over 2 inches into the top side of a concrete floor/slab (less than 2 inches requires that you use a drill stop); complete a Floor, Wall and Ceiling Penetration permit Request. Permits are always required for any penetrations into the bottom side of any concrete floor.

A work control document is required to govern the use of active fall protection systems (fall arrest or fall restraint). Unless work is performed in accordance with an Operational Safety Procedure (OSP) or Temporary Operational Safety Procedure (TOSP), a Fall Protection Permit must be completed and approved to satisfy the work control document requirement. Refer to ES&H Manual Chapter 6131 Appendix T4 - Fall Protection Permit Instructions.