Page 82 - BCCGA Best Practices Version 3.0

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VACUUM EXCAVATION DEFINITION

PRACTICE STATEMENT:

Hydroexcavation is defined as a mechanical means of

soil extraction through a vacuum when using water or air jet devices for

breaking ground. This method of excavation is commonly referred to as “soft

excavation technology” and is commonly accepted as being equivalent or safer

than hand digging within the “tolerance zone” around underground facilities.

PRACTICE DESCRIPTION:

Hydroexcavation is a non-invasive means of

extracting soil through a vacuum while using water or air jet devices for

breaking ground. This is a safe method of excavating around utilities if the

equipment has been designed and engineered to do so When preparing a

.

hydroexcavation, considerations should include: variable pump adjustments

and thresholds, shoring and backfilling, dig tube segregated ends, neoprene

lance ends, neoprene dig tube ends, appropriate boiler temperature,

equipotential bond mat, and correct training on utility excavations.

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OPERATOR COMPETENCY – VACUUM EXCAVATING

PRACTICE STATEMENT:

All operators of hydroexcavation equipment have the

knowledge, training, and experience to perform the work. Operators are also

familiar with the Workers Compensation Act, WorkSafeBC regulations, and have

knowledge of all potential or actual danger to health and safety in the

workplace.

PRACTICE DESCRIPTION:

To operate hydroexcavating equipment, operators

will have the necessary minimum training as recognized by industry. Operators

will also have knowledge of (1) defined work practices, and (2) specific

procedures as recommended by manufacturers of the equipment.

REFERENCE:

Training guidelines as outlined by equipment manufacturers and

facility owners.

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SAFE OPERATION OF VACUUM EXCAVATION EQUIPMENT

PRACTICE STATEMENT:

Hydroexcavation equipment is to be operated in

accordance with recognized practices and procedures that provide the

necessary levels of worker and public safety and prevent damage to

underground utilities.

Best Practices Version 3.0