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DOE-EM-STD-5503-94
13.0. CONFINED SPACE ENTRY
13.1. BACKGROUND
A confined space is defined as any location that has limited openings for entry and egress, is not
intended for continuous employee occupancy, and is so enclosed that natural ventilation may not
reduce air contaminants to levels below the threshold limit value (TLV). Examples of confined
spaces include: manholes, stacks, pipes, storage tanks, trailers, tank cars, pits, sumps, hoppers,
and bins. Entry into confined spaces without the proper precautions could result in injury and/or
impairment or death due to:
An atmosphere that is flammable or explosive,
Lack of sufficient oxygen to support life,
Contact with or inhalation of toxic materials, or
General safety or work area hazards such as steam or high pressure materials.
The overall objectives of this chapter are to provide the minimum safety requirements to be
followed while entering, exiting and working in confined spaces during environmental restoration
work. This chapter provides pertinent details on the following:
Duties and responsibilities,
Identification and evaluation,
Hazard assessment,
Hazard controls,
Entry permits,
Entry procedures,
Opening a confined space,
Atmospheric testing,
Isolation and lockout/tagout safeguards,
Ingress/egress safeguards,
Warning signs and symbols,
Training, and
Emergency response.
13.2. DUTIES AND RESPONSIBILITIES
13.2.1. Project Manager
The Project Manager should assign an individual within each project to act as the project
Confined Space Coordinator. This individual should be responsible for implementing the confined
space program in accordance with this chapter.
13-1


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