Chapter 44: Penetration Safety

Overview (1)

Penetrations are defined generally as openings made by drilling, cutting, or otherwise piercing a wall, ceiling, or floor (see Section 4, “Definitions”).

Hazards/Impacts (1.1)

The most common hazards associated with penetrations are

Unidentified or misidentified utilities

Workers may be exposed to hazards such as electric shock, suffocation, or explosions if they unexpectedly come in contact with utility lines.

Waste material generated from the penetrations

It may be a small amount of material, but it could contain lead, asbestos, or PCBs. (See hazard-related chapters.)

Scope (2)

Specific requirements are defined to ensure that the hazards of penetrations are evaluated and controlled to protect personnel. The penetration safety program and its requirements apply to all personnel, SLAC and subcontractor, performing penetrations at SLAC.

Exemptions (2.1)

Excavations (see Section 4, “Definitions”) are not within the scope of this chapter.

The requirements of this program do not apply to the placement of thumbtacks, picture nails, or similar items in a hollow wall or ceiling that do not go beyond the thickness of the external material (that is, sheetrock, wood, plaster board).

Variances (2.2)

Any variance to this procedure must be requested in writing to the electrical safety officer (ESO) or alternative authority as determined by the ESO, and written approval received prior to implementation.

Implementation (8)

The requirements of this chapter are effective upon publication unless otherwise noted here.

continue to Standards (3)

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