Introduction to the ASD Suppression Actuation Threshold (ASAT) Calculator July _03_ASAT Calculator Sales and Marketing Introduction Presentation

Agenda 1.Background 2.Functions & Use 3.Benefits 4.Package & Support

Background Mission Critical Facilities Protection Protection of mission critical facilities against a fire event is achieved through: -Early intervention (initiated by VEW) -Suppression (initiated by VEW/EW) Conventional practice for suppression system actuation: -Conventional spot-type smoke detectors in a “Coincidence Detection” arrangement

Example of Conventional Coincidence Detection Suppression actuation through Coincidence Detection of cross- zoned spot-type smoke detectors

ASAT Calculator Purpose: Recommend suitable VESDA Fire alarm threshold for suppression actuation, benchmarked against conventional spot- type smoke detectors configured for Coincidence Detection ASAT Calculator is the first automated means of establishing equivalence between ASD and spot-type smoke detectors: 1.Concept developed using CFD modelling tools 2.Verified with extensive 3 rd party empirical tests 3.FM Approvals

FM Official Listing ASAT Calculator is officially listed as an approved design tool in the FM Approval Guide, Chapter 14 (Electrical Signalling)

Agenda 1.Background 2.Functions & Use 3.Benefits 4.Package & Support

Use of ASAT Calculator ASAT Calculator is applicable for ceiling and floor void protection in enclosures with continuous or periodic air circulation with different airflow patterns and magnitudes Telecommunication facilities, base-stations Computer/server rooms Offices etc.

Use of ASAT Calculator ASAT Calculator Fire threshold value – predominantly used for Suppression system actuation with a pre-engineered VESDA coincidence detection scheme – But it may also be used for: – Evacuation annunciation and procedure – Fire Brigade notification – HVAC system shutdown or conversion to smoke mode – Automated equipment shutdown

VESDA Coincidence Detection Schemes Alternating VESDA pipe VESDA exhaust sampling Hybrid detection VESDA ceiling (floor void) / AHU sampling Single ASD detector with staged alarms

Design: ASAT Calculator Required Inputs for the Calculator 1.Project name 2.Units (Metric or Imperial) 3.Entire enclosure floor area (m 2 or ft 2 ) 4.Average ceiling height (m or ft) 5.Floor void height (if applicable) (m or ft) 6.Spot-type smoke detector nominal sensitivity (%/m or %/ft) 7.VESDA sampling hole spacing (m or ft) 8.Enclosure air change rate (air change/hour) 9.Ventilation scheme

Design: ASAT Calculator Inputs & Outputs

Verification: System Commissioning Test Test method to verify ASAT Fire thresholds during system commissioning

Agenda 1.Background 2.Functions & Use 3.Benefits 4.Package & Support

Benefits of Using ASD for both VEWSD and Suppression Actuation Detect smoke early enough to allow time to: Investigate and respond before disruption to business continuity, loss of assets or risks to life Avoid costly suppression release Avoid the costs of nuisance alarms Ensure the most timely and reliable actuation of suppression: High sensitivity overcomes the smoke detection challenges presented by smoke dilution (air movement and the scrubbing of filters) Cumulative sampling ensures reliable detection in high airflow environments Active sampling of ASD ensures consistent performance in a range of airflows Avoid duplication of detection schemes by using ASD for both very early detection of smoke in high airflow environments and the control of suppression release Avoid the current practice in Datacom facilities of using ASD for VEWSD in addition to spot-type smoke detectors for suppression actuation

Benefits of Using the ASAT Calculator Proven equivalence to industry-standard spot-type smoke detector sensitivities (but improved performance) Thresholds calculated to specific environmental parameters Supported as manufacturer’s recommendations and validated by verification procedure as part of commissioning FM Approved method of calculating fire thresholds for suppression actuation

Agenda 1.Background 2.Functions & Use 3.Benefits 4.Package & Support

Package ASAT Calculator software tool (Microsoft Excel) Part No.: VSW-088 File No.: Technical Data Sheet – Part No.: 21188, DOC No.: ASAT Calculator Product Guide – Part No.: 21187, DOC No.: ASAT Verification & Commissioning Procedure DOC No.: Marketing White Paper – “What A Coincidence! – Very Early Warning Smoke Detection Together With Suppression Actuation” – DOC No.: Design Guide for Telecommunications and Data Processing Facilities – DOC No.: Detailed technical reports (available on request)

Availability & Support Release of the ASAT Calculator to channel partners and to end users by request (August 2007) Channel training by request Applications Engineering Group (AEG) support on major projects by request