Site control/work zones

Eliminates or controls worker Site work zones and safety standards safety requirements... 

F. All site control elements of the safety and health program must be fully implemented as described in the program. The purpose of site control requirements is to ensure that only properly trained and authorized individuals enter those areas of the site with potential hazards, and that, in the event of an emergency, rapid assistance can be rendered to employees working in the exclusion zone. This section discusses the findings of two components of site control the establishment and maintenance of site work zones and the establishment and implementation of appropriate confined space procedures. 

Site H was the only site at which the contractor had implemented comprehensive and effective site control elements. The Site H contractor had established site work zones, a buddy system, and site communication procedures consistent with 1910.120(d). This contractor had also established exclusion zones and contamination reduction zones to control migration of site contaminants to clean areas of the site when work within these areas introduced the potential for exposure to hazardous contaminants. The audit team supported this contractor s use of flexible and temporary work zone boundaries based on monitoring results and hazard determinations. 

To reduce the accidental spread of hazardous substances by workers from a contaminated area to a clean area, zones should be delineated on the site where different types of operations will occur, and the flow of personnel among the zones should be controlled. The establishment of work zones will help ensure that personnel are properly protected against the hazards present where they are working, that work activities and contamination are confined to the appropriate areas, and that personnel can be located and evacuated in an emergency. 

Implementation of a site control program to protect employees against hazardous materials contamination. At a minimum, the site safety plan must designate the location of the spill or release site, site work zones, site communications, safe work practices... 

Heavy Construction — Flagging Safety Heavy Construction — Highway Construction Heavy Equipment — Backovers PPE - High-Visibility Garments Site Safety — General — Struck-By Hazard Defined Work Zone Safety — Personal Protective Equipment Work Zone Safety — Traffic Control Devices Work Zone Safety — Basic Training... 

Elements of the site control program. The site control program shall, as a minimum, include A site map site work zones the use of a buddy system site communications including alerting means for emergencies the standard operating procedures or safe work practices and, identification of the nearest medical assistance. Where these requirements are covered elsewhere they need not be repeated. 

A comprehensive site safety and control plan should include the following summary analysis of hazards on the site and a risk analysis of those hazards site map or sketch site work zones (clean zone, transition or decontamination zone, work or hot zone) use of the buddy system site communications command post or command center standard operating procedures and safe work practices medical assistance and triage area hazard monitoring plan (air contaminate monitoring, etc.) decontamination procedures and area and other relevant areas. This plan should be a part of the employer s emergency response plan or an extension of it to the specific site. 

Underground services must be located and marked where applicable, using plans, etc. Overhead power lines should be disconnected, but otherwise fenced/signed. Water, gas and electricity supplies must be disconnected. Fall prevention and protection techniques will be required in accordance with the Construction Regulations hierarchy of control. PPE required by assessments must be provided and worn. Dust should be controlled by a combination of damping down, housekeeping, work methods and local exhaust ventilation. Defined noise protection zones, barriers and work rotation combine to tackle noise above the action levels. Site boundary noise output may be the subject of local authority controls. 

Terra-Vac, Inc., developed the In-Situ Vacuum Extraction process, which removes volatile organic constituents (VOCs) from the unsaturated zone of soils through extraction wells. The extracted gases and water proceed to a vapor-liquid separator and an emission control system. The process has been employed at over 60 sites. Four case studies, including three Superfund sites, have been documented. The process represents a viable technology to fully remediate sites contaminated with volatile organics. Considerations for use include contaminent volatility, site-specific cleanup level, and soil properties. The process works well with most soil types. The air-filled porosity of a soil is an important criterion to indicate whether vacuum extraction will work. Soils with low permeability but with... 

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