The Hot Line
The Hotline is the outer boundary of the Exclusion (Hot) Zone.
The hotline must be clearly mark the outer boundry of the Hot Zone.
The Hotline should be clearly marked by lines, placards, hazard tape and/or signs; or enclosed by physical barriers, such as chains, fences, or ropes.
Establishing the Hotline involves the following steps:
- Visually survey the immediate site environs. Determine the locations of:
- hazardous substances
- drainage, leachate, and spilled material
- visible discolorations
- Evaluate data from the initial site survey indicating the presence of:
- combustible gases
- organic and inorganic gases, particulates, or vapors
- ionizing radiation
- Evaluate the results of soil and water sampling.
- Consider the distances needed to prevent an explosion or fire from affecting personnel outside the Exclusion Zone.
- Consider the physical area necessary for site operations.
- Consider meteorological conditions and the potential for contaminants to be blown from the area. Secure or mark the Hotline.
- Modify its location, if necessary, as more information becomes available.
The degree of contamination in the Contamination Reduction Zone (CRZ) decreases as one moves from the Hotline to the Support Zone, due both to the distance and the decontamination procedures.
Knowledge Check Choose the best answer for the question.
1-6. The outer boundary of the Exclusion Zone is called the _____.
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