​TRENCHING & EXCAVATING
​CONFINED SPACE RESCUE AWARENESS (TECSRA)
NFPA compliant | WSH (Confined Space) Regulations 2009 and SS506:2011 compliant

​MODULAR OUTLINE 

The Trenching and Excavating Confined Space Rescue Awareness course is designed to provide a fundamental understanding of its operating procedures and emergency planning. The course can serve as an educational introduction to the topics associated with trench and excavating during emergencies for construction workers. In an effort to provide a fundamental understanding of trench and excavating rescue procedures, the course covers the following topics:

• Soil mechanics which includes soil basics, soil stability, and how cave-ins occur
• Protective system options
• Site securement
• Setting up incident command zones
• Safety in rescue operations
• How to approach a caved-in trench
• How to begin the rescue
• Turning the scene over the Rescue Personnel – What they will want to know.

 
The class is designed to benefit all employees that will be involved with trenching and excavation work. The course is appropriate for senior management, safety professionals and field operations directly responsible for the supervision of excavation work and/or safety.
 
Trainees will gain the skills and knowledge of the confined space work safety activities (PTW, gas detection, roles of the entrants, attendant and rescue personnel) and perform risk analysis to effects a rescue during a confined space emergency. Trainees will also be familiarize and be conscious of using the necessary rescue equipment including self-contained breathing apparatus (SCBA) to achieve a successful rescue mission and further apply the principles of first- aid in extracting a casualty from the confined space. This course will provide both theoretical and hands on practical exercises, in addition to also create awareness of confined space hazards and the consequences of something go wrong. Their readiness capitalizes quick response to incident shall ensure a successful mission in a confined space emergency and most importantly prevent the loss of lives.
 
Length of Course:           2-Day Awareness Training (16 hours}
 Pre-requisites:                  All trainees must be certified by a doctor to be in good health.
                                         
 A. INTRODUCTION & OBJECTIVE

Safety Guidance
·         State the safety rules laid down by the Trainer, which must be obeyed during the course.
 
Objective

• To gain the skills and knowledge required to understand Trenching, Excavating & Confined Space hazards.
• To learn the correct safe work procedures, permit to work, lockout & tag out.
• To be competence using gas detection, rescue equipment and apply first-aid principles.
• To be successful in extracting the casualty and apply the immediate life saving action.

 
B. INTRODUCTION TO TRENCH & EXCAVATION CONFINED SPACE
Trenching and Excavation

• Defining what is trenching and excavation.
• State the WSH (construction) regulation 77 according to the Singapore requirement.
• State adequate shoring by underpinning, sheet piling, bracing or other means of shoring shall be provided to prevent collapse of the excavation, or any structure adjoining or over areas to be excavated.
• Pre-planning to excavation works and safety factors to considered.
• Soil classification categories and excavation hazards.
• Safety notices shall be put up at appropriate and conspicuous positions to warn persons about the excavation in a worksite.
• Access and egress.
• Safe work practices and type of emergencies.

 
Confined Space Hazards

• States the definition of confined space and permit required for confined space.
• Lists the hazards related to trenching and excavating works as a Confined Space as:

• Atmospheric hazards
• Physical hazards
• Heat Stress
• Untrained Entrants

Confined Space Permit Requirement

• Essential training for personnel:

• Confine space supervisor
• Authorized attendant
• Authorized entrant
• Atmospheric testing and ventilation

 
Products in a Confined Space

• Explain the physical and chemical properties.
• Assessed the following products from SDS in terms of:

• Vapor density
• Vapor pressure
• Flash point
• Flammable range
• Exposure limits and toxicity

 
C. ATMOSPHERIC TESTING AND VENTILATION

Type of Instrumentation

• Lists some of the basic detectors used are:

• Oxygen meter
• Combustible gas indicator
• Multi-gas detector
• Colour metric tubes
• pH testing paper

Ventilating the Confined Space

• State the atmosphere in the space.
• The physical characteristic of the space
• The capacity and the availability of the air movers.
• Calculating the air volume and velocity  

                            
D. CONFINED SPACE INCIDENT MANAGEMENT

Principles of Incident Management

• Unity of command.
• Span of control
• Common terminology
• Resource management
• Incident priorities
• Logistics
• Safety.
• Emergency Rescue Procedures

 
Risk Analysis & Table Top Scenario
 
E. CONFINED SPACE RESCUE EQUIPMENT

Software & Hardware

• Software equipment as:

• Kern mantle ropes (static and dynamic)
• Nylon webbings
• Slings
• Harnesses (Class1, Class 2 & class 3)

• Hardware equipment as:

• Carabiners
• Pulleys
• Ascending devices
• Descending devices

• Retrieving System:

• Tripod and winch assembly
• Anchors
• Mechanical advantages
• Safety belay system
• Stretcher
  
• Demonstrate the donning of the SCBA
• Explain the essential components of the SCBA
• Refresh first-aid knowledge

 
F. PRACTICAL EXERCISE

Demonstrate Competence of using a SCBA
 
Assess the Knowledge of First-Aiders
           
Excavation Confined Space Simulator Entrance and Rescue (Site Availability)
 
G. DEBRIEFING AND EVALUATION
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