Safety 1st Advancer Manual del operador descargar pdf (Pagina 26)

Environmental Remediation Drilling

Safety Guideline

Page 26 of 132

2.8- Obtaining Required Permits

Determine the permits required for drilling activities under applicable local, state, and federal laws. Prepare

the permit applications and proper documentation for submittal to permitting agencies or third parties.

Examples of the various permits that may be required include, but are not limited to, the following:

• Work permits for agencies,

• Hot work permits for the facility,

• Work permit for the facility,

• Excavation permits for the facility, and

• Site work permits may also be required as mandated by site policies and procedures.

2.9 - Borehole Protection Steps

The following steps are recommended to reduce the potential for encountering subsurface utilities during

drilling:

• Conduct a site walkthrough and verify utility location checklist is complete,

• Review proposed locations and the site with on-site personnel and obtain other historical information,

• Locate boreholes a safe distance (at least 5 feet) perpendicular from utility mark-out lines,

• Carefully break surface cover if present,

• Clear location to a depth of the utility window BGS (varies from client to client and location to location)

and at least 120% of the borehole diameter, and

Proceed with caution when advancing the drill or probe.

2.10 - The Clearance Process

The goal of the entire clearance process is to verify absence of subsurface structures to avoid damage to

property, the environment and injury to workers or others.

The first step in the clearance process is to contact the local area ONE CALL Utility Locate Service or, if

inside a facility, the appropriate facility personnel. The local one call utility locator service must be

contacted well ahead of the project, especially if directional drilling is planned. The service should be

informed of the type of equipment to be used, and should be asked to space locator marks close together.

This will allow the team to visualize sudden shifts or turns in the utility's path.

The clearance process is influenced by two geometric planes: vertical and horizontal. Considerations for

completing the clearance process are:

1. Consider the depth and diameter of clearance.

• When drilling vertically, the utility window profile depth must be considered. This can certainly vary

with the amount of development in an area. The depth to clear will vary with the client, and may go

until refusal is reached. Often the deeper utilities are high-pressure pipelines or high voltage power

cables, which are very dangerous and warrant extreme caution.

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Safety 1st Advancer Manual del operador Pagina 26