TITLE:

ES&H Manual

 

DOCUMENT ID:

Glossary of Terms

 

 

 

 A

abnormal operating conditions

Conditions that are unfavorable, harmful, or detrimental to or for work, such as excessively high or low ambient temperatures, exposure to adverse conditions such as ODH (Oxygen Deficiency Hazards), radiation, weather, corrosive fumes, high traffic (vehicles and/or people), or hazardous locations which would require a SOP or OSP. (Chapter 6140 Cranes&Hoist)

AC utilization equipment

Equipment that utilizes electrical energy for electronic, electromechanical, chemical, heating, lighting, or similar purposes. For further information on this equipment, refer to Chapter 6230 Electronic Equipment Safety. (6220) (6230) (6230T1) (6230T2)

acceleration system/component

Devices capable of accelerating particles to energies of > 10 keV. This includes ac, dc, or RF voltages in excess of 10 kV applied in or near a low pressure vessel. (Prompt radiation controls are recommended for equipment capable of generating a final particle energy ≥ 25 keV.) (6311 PromptRadCon)

Accelerator Operations Directives (AOD)

details the approach utilized by Accelerator operators to comply with Jefferson Lab policy, procedures, and documentation requirements. (3130 FELExpRev)

Accelerator Safety Order

A reference document from DOE (DOE Order 420.2, Safety Of Accelerator Facilities, May 26, 1999) that provides guidance for ES&H issues associated with accelerators and accelerator-based experiments. Applicable portions of this document have been included in Appendix E of the JSA/Jefferson Lab contract with DOE. (3130 FELExpRev)

Access Control System (ACS)

A system whose purpose is to reduce the likelihood of unauthorized or inadvertent access to areas presenting a radiation hazard to personnel. (6311 PromptRadCon)

Acclimatization

The physiological adjustment process that occurs when a healthy worker accustomed to a temperate environment begins to work in a hot environment. These adjustments should take place over a period of days (up to 1-2 weeks), during which time spent may be gradually increased safely. (6640HearConserv)

Action Level

A predetermined level which, when reached, triggers a particular action.  (e.g. 30 μg/m3 for eight hours concentration of lead particulates in the air 30 μg/m3 for eight hours triggers stringent monitoring (Chpt 6670); or 1 rem in 1 year for an individual is the cumulative annual exposure which triggers Director approval to allow continuation of work.

action limit

The evaluation of thermal stress, action limits may be used, such as temperature cutoffs or temperature index cutoffs. When an action limit is reached, the supervisor shall initiate action to prevent thermal illness or injury. (See Appendix 6670-T3 Assessment of Thermal Hazards.) (6670 ThermalStress)

activate

Cause to become radioactive. (6315 EnviroMonitorIonRad)

active controls

Controls that require some action to prevent or mitigat