SITE CONTROL

1
SITE CONTROL

• Why?
• 29 CFR 1910.120 (OSHA)
• Purpose to reduce public exposure to chemical,
  physical, biological, and safety hazards
• Must be site-specific

2

• Site Maps
• Essential to site control
• Serves as source of information
• --Access and evacuation routes
• --Areas requiring special PPE
• --As topographic features, climactic conditions,
  drainage, location of landmarks
• Maps are changeable throughout course of site
  operations, influenced by accidents, changes in
  site activities, emergencies, unanticipated
  hazards, etc.

3

• Site Preparation
• Importance to worker safety
• Major steps
• --Roadway construction
• --Arranging traffic flow patterns
• --Eliminate physical hazards as possible
• --Install skid-resistance devices as needed
• --Construct operation pads for mobile facilities
• --Construct loading docks, processing and staging
  areas, and decon areas
• --Provide illumination as needed
• --Install electrical equipment and connections as
  needed

4

• Site Work Zones
• Constructed to ensure that . . .
• Personnel are protected against hazards specific
  to where they are working
• Contamination is confined to designated areas
• Personnel can be located and evacuated in an
  emergency

5

• Most common zones
• Exclusion Zone
• Contamination Reduction Zone
• Support Zone

6

• Exclusion Zone
• --Site of contamination, so location of actual
  clean-up processes
• --Perimeter (hot line) established by
• ?visual survey
• ?location of hazardous substances, leachate,
  spills
• ?evaluation of initial survey indicating possible
  combustibles / radiations
• ?evaluation of soil / water samples
• ?determination of safe distances from fires, etc.
• ?physical area needed for operations
• ?climactic conditions
• --Hot line is changeable

7

• Contamination Reduction Zone
• --Purpose
• --Design
• ? Decon of equipment, personnel, samples
• ? Emergency response
• ? Equipment re-supply
• ? Sample packaging for on-site and off-site
  testing
• ? Drainage and containment of water, etc., used
  for decon
• ? Temporary rest areas

8

• Support Zone
• Will contain . . .
• . . . Command post
• . . . Medical station
• . . . Worker rest areas
• . . . Equipment and supply centers
• . . . Administration facilities
• . . . Field laboratory