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8/10/2019 Unbranded ASAT Calculator Sales and Marketing Introduction Presentation
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Introduction to the
ASD Suppression ActuationThreshold (ASAT) Calculator
July 2007
13574_03_ASAT Calculator Sales and Marketing Introduction Presentation
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Agenda
1. Background
2. Functions & Use
3. Benefits
4. Package & Support
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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
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Example of Conventional Coincidence
Detection
Suppression actuation through Coincidence Detectionof cross-
zoned spot-type smoke detectors
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FM Official Listing
ASATCalculatoris officially listed as an approved
design tool in the FM Approval Guide, Chapter 14
(Electrical Signalling)
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Agenda
1. Background
2. Functions & Use
3. Benefits
4. Package & Support
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Use ofASATCalculator
ASATCalculatoris applicable for ceiling and floorvoid protection in enclosures with continuous or
periodic air circulation with different airflow patterns
and magnitudes
Telecommunication facilities, base-stations
Computer/server rooms
Offices etc.
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Use ofASATCalculator
ASATCalculatorFirethreshold 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
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VESDA Coincidence Detection Schemes
VESDA Detector 1 VESDA Detector 2
Alternating
VESDA pipe
VESDADetector 1
VESDADetector 2
CoincidenceDetectionCylinder
CoincidenceDetection Detector
(CDD)
VESDA exhaust
sampling
VESDA Detector
Hybriddetection
NormalProtection
Group OverReturn Air
Vent
VESDA ceiling
(floor void) / AHU
sampling
Single ASD
detector with
staged alarms
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Design:ASATCalculator
Required Inputs for the Calculator
1. Project name
2. Units (Metricor Imperial)
3. Entire enclosure floor area (m2or ft2)
4. Average ceiling height (mor ft)
5. Floor void height (if applicable) (mor ft)
6. Spot-type smoke detector nominal sensitivity (%/mor %/ft)
7. VESDA sampling hole spacing (m or ft)
8. Enclosure air change rate (air change/hour)
9. Ventilation scheme
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Design:ASATCalculator Inputs & Outputs
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Agenda
1. Background
2. Functions & Use
3. Benefits
4. Package & Support
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Benefits of Using ASD for both VEWSD and
Suppression Actuation
Detect smoke early enough to allow time to:
Investigate and respond before disruption to businesscontinuity, loss of assets or risks to lifeAvoid costly suppression releaseAvoid the costs of nuisance alarms
Ensure the most timely and reliable actuation of suppression:
High sensitivity overcomes the smoke detectionchallenges presented by smoke dilution (air movementand the scrubbing of filters)
Cumulative sampling ensures reliable detection in highairflow environments
Active sampling of ASD ensures consistent performance
in a range of airflows
Avoid duplication of detection schemes by using ASD for bothveryearly detection of smoke in high airflow environments andthecontrol of suppression releaseAvoid the current practice in Datacom facilities of usingASD for VEWSD in addition to spot-type smokedetectors for suppression actuation
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Benefits of Using theASATCalculator
Proven equivalence to industry-standard spot-typesmoke detector sensitivities (but improved
performance)
Thresholds calculated to specific environmental
parameters
Supported as manufacturers recommendations and
validated by verification procedure as part of
commissioning FM Approved method of calculating fire thresholds
for suppression actuation
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Agenda
1. Background
2. Functions & Use
3. Benefits
4. Package & Support
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Package
ASATCalculatorsoftware tool(Microsoft Excel)
Part No.: VSW-088
File No.: 13625
Technical Data SheetPart No.: 21188, DOC No.: 13583
ASATCalculatorProduct GuidePart No.:21187,DOC No.: 12748
ASATVerification & Commissioning Procedure DOC No.: 12746
Marketing White PaperWhat A Coincidence! Very Early
Warning Smoke Detection Together With Suppression
Actuation DOC No.: 11843
Design Guide for Telecommunications and Data ProcessingFacilitiesDOC No.: 11782
Detailed technical reports(available on request)
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Availability & Support
Release of the ASATCalculatorto channel
partners and to end users by request (August
2007)
Channel training by requestApplications Engineering Group (AEG) support
on major projects by request