Definitions (Section 4)

Area hazard analysis (AHA). A process for analyzing hazards, focused on the hazards an individual faces in his/her work area as opposed to hazards of individual work activities (see Job hazard analysis and mitigation)

Area responsible person. All areas at SLAC (including buildings and facilities) have a responsible person designated by line management. Reference the appropriate area hazard analysis.

Customer/requester. Person or organization designee requesting the penetration

Excavation. Any man-made cut, cavity, trench, or depression in an earth surface formed by earth removal. This definition includes environmental characterization (for example, core drilling), jack hammering, and indoor drilling/digging operations that may contact soil. In general, excavations are operations where contact with soil is expected, such as trenching and removing soil to install foundation footings or exposing underground pipes for repair or replacement (See ES&H Manual, Chapter 11, "Excavation Safety").

Electrical hazard control work plan (EWP). A document that, at a minimum, defines the work, identifies the hazards associated with the work, and describes the controls needed to reduce the risk posed by the work to an acceptable level

Hidden hazard. Unseen electrical lines, gas lines, waste lines, water lines, or other lines that, if disturbed, may injure personnel or damage equipment

Job hazard analysis and mitigation (JHAM). A tool used for analyzing hazards an employee faces and identifying measures to mitigate those hazards

Job hazard analysis and mitigation, non-routine. A document or set of documents that includes identification of site hazards and controls, principal work steps, task hazards and controls, and necessary permits and training

Non-destructive testing (NDT). The examination of the internal structure of a solid material without using destructive forces. Examples of NDT methods are penetrating ionizing radiation, ground-penetrating radar, and magnetic, inductive, and conductive devices and methods.

Penetration. An opening made by drilling, cutting, or otherwise piercing a wall, ceiling, or floor. This does not include 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, and so on).

Class 1 Penetration. Any penetration that is made into hollow walls, hollow ceilings, or hollow floors, or a penetration into solid materials to a depth of 2.0 inches or less
Class 2 Penetration. A penetration that is deeper than 2.0 inches or is all the way through solid materials

Personal protective equipment (PPE). Safety equipment, such as hard hats, safety glasses, safety shoes, dielectric gloves, that is worn to protect personnel from hazards

Responsible line manager. A manager or supervisor who is responsible for directing the day-to-day activities of employees under his/her supervision

Solid material. A floor, slab, wall, roof, or ceiling consisting of cast-in-place or pre-cast concrete, brick, gypsum drywall, plaster, wood, or masonry block materials

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