2. 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
3. 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
4. HAZARDS AND RISKS
Continued operations
Damage to equipment
Health to occupants
Fire safety in the building
5. 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
6. 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.
7. 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.
8. BACKGROUND FOR ALTERNATIVE DESIGN
Cooling 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.
9. 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 Units
Distribution 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
10. 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
