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GCD International Bulletins

April 2004

Brukunga. South Australia

Smoke Capture and Thermal Oxidation

 

Introduction

SA Country Fire Service operates a training college located at Brukunga in the Adelaide Hills.  The centre trains personnel for SA as well as interstate and overseas.  Included in the extensive fire training facilities is the Compartment Fire Training Facility where training in the fighting of fires under conditions of constrained space, dense smoke and high radiation is conducted.  This training is done within converted shipping containers where fires are established using particle board soaked in kerosene under controlled air conditions.

The Smoke Capture and Incineration equipment has been installed to address community concerns and successfully collect and treat the intermittent emissions of dense smoke generated during the training sessions lasting approximately 30 minutes each.

Text Box:

Scope

Total equipment and services supply on a lump sum, turn key basis including design, supply, install, commission, gas approval and training.

General Description

The Compartment Fire Training Facility comprises a building with common central dividing wall, with a 9ft x 40ft shipping container in each section.  A Smoke Capture System is connected to each container and includes two close capture hoods per container plus ducting, adjustable dampers and common induced draft fan with variable speed drive.

The Thermal Oxidiser is vertically aligned and manufactured from heavy gauge mild steel shell with ceramic fibre lining in the combustion chamber  designed to handle temperatures of up to 1200oC.

The exhaust flue has a 316 stainless steel rain cowl for protection.

Text Box: CFS Smoke Capture Thermal Oxidiser

Ancillary systems include the LPG gas valve train and the electrical control and burner management system housed in a local control panel to comply with Australian Standards for electrical and gas installation.

Chamber Design:

This was a novel application for a Thermal Oxidiser and includes a conical volute chamber to ensure even distribution of the smoke fumes and includes a Bloom Baffle Burner complete with a high temperature rated front refractory baffle, resistant to high temperature back radiation.

The valve train consists of all valves and controls necessary to regulate the LPG gas supply to the main flame and pilot burner. When the chamber is above a minimum operating temperature smoke is introduced to the oxidiser.

Control System

The electrical and burner management gas control system is fitted directly to the base of the Thermal Oxidiser. It provides a fully automated safe start-up routine with minimal operator interaction required. Once operating temperature has been reached smoke may be extracted from the training compartment.

The operator may change the extraction rate of smoke from the control panel or from a local pendant station located in front of the training compartment, allowing improved control during each burn.

Fire and smoke within shipping container

used for compartment fire training

 

 

Other Equipment and Services Available from GCD