FIRE ENGINEERING - Brief introduction (ATNS)
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Transcript of FIRE ENGINEERING - Brief introduction (ATNS)
FIRE ENGINEERINGDTM: A BRIEF INTRODUCTION
WHAT DOES DTM OFFER
Architectural Services The Fire Protection Plan is developed with the requirements of Safety
Design and Regulation in mind first, and with the SANS requirements second
DTM identifies the hazards and risks for a application Inputs in early design with the architect to develop safe and cost
effective systems (Redlining) Recommendations Budgets
WHAT DOES DTM OFFER (CONTINUED) Engineering Services
Fire Protection Plan (Rational Design): A Functional specification of how the safety systems of the building will meet the fire safety objectives.
Systems Design: Detail design calculations and functional specifications
Systems design by the Fire Engineer: Fire Detection Systems to detect any form of combustible Surpression or Prevention system
HAZARDS AND RISKS
Continued operations Damage to equipment Health to occupants Fire safety in the building
WARNING: IMPACT OF THE SURPRESSION SYSTEMS The SANS 10400 Part T lists automatic sprinkler systems and fixed
extinguishing systems only. Sprinklers
Water damage Extinguishing systems:
Fire has already started/developed Gas deployment may damage equipment due to design guidelines in the
SANS 10139
Hypoxic Systems vs. conventional Gas Suppression (refer to Appendix B): The Hypoxic system has the following advantages over the more well-
known Gas Suppression Systems: The fire is prevented from developing due to the low oxygen levels
maintained inside the console. This means no fire damage or down time. The duration of application, according to the design code for Gas
Suppression, will require evacuation of the room. Discontinuation of operations is a risk.
Due to construction constraints, the Gas Suppression system cylinders will have to be installed inside the room of operation – which poses a potential injury risk in the case of malfunction.
The costs for installation of Gas Suppression systems are more costly compared to Hypoxic systems.
BACKGROUND FOR ALTERNATIVE DESIGN Hypoxic air for fire prevention, also known as oxygen reduction
system, is an active fire protection A permanent reduction of the oxygen concentration in the protected
areas Usually 5% to10% of oxygen contained in the air is replaced by the
same amount of nitrogen: In a hypoxic environment, common materials cannot ignite or burn.
Thus, considering the fire triangle, a fire cannot occur because of the lack of sufficient oxygen.
BACKGROUND FOR ALTERNATIVE DESIGNCooling air for consoles will mix with pre-mixed normal air conditioned air to yield air mix with 17% Oxygen content. This is equal to Johannesburg altitude.
BUDGET:Location OR Tambo, 85 Consoles
Distribution of Modules Operations, 32 Consoles ATA, 38 Consoles SSS, 15 Consoles
Means of Prevention/Suppression
Hypoxic Gas Flood Hypoxic Gas Flood Hypoxic Gas Flood
Sub Total R 1 808 000 R 2 200 000 R 2 147 000 R 2 612 500 R 847 500 R 1 023 750
Location Cape Town International, 32 UnitsDistribution of Modules Operations, 22 Consoles SSS, 10 Consoles
Means of Prevention/Suppression Hypoxic Gas Flood Hypoxic Gas Flood
Sub Total R 1 243 000 R 1 501 500 R 580 401 R 682 500
BUDGET: Budget Includes (both systems):
Fire Prevention System (Hypoxic) or Gas Suppression system (Inerting agent) supply and distribution.
All monitoring, detection and control systems that interface with the current control room
Control panels Audio and Visual alarms Ducting and hardware required for the Suppression and Detection Systems Fire safety signs
Budget Excludes: Fire detection for the building Fire Protection Plan for the building
CASE STUDY