Comments on “Measurements of the characteristic lengths of smoke detectors”

1992 ◽  
Vol 28 (2) ◽  
pp. 106-108
Author(s):  
Richard W. Bukowski
Keyword(s):  
Smoke Detectors

scholarly journals Alat Pendeteksi Kebakaran Menggunakan SMS

2020 ◽  
Vol 1 (2) ◽  
pp. 251-254
Author(s):  
Sindi Permata Sari ◽  
Oriza Candra ◽  
Jhefri Asmi
Keyword(s):  
Human Factors ◽  
Temperature Sensor ◽  
Human Life ◽  
Fire Detection ◽  
Smoke Detectors ◽  
Fire Detector ◽  
Arduino Uno ◽  
Main Component ◽  
The Brain ◽  
Early Fire Detection

Lately, there are frequent fires caused by human factors. Because we cannot predict the process of fire in advance. And the delay in knowing the occurrence of a fire is very fatal to the safety of human life and property. With advances in technology, we can overcome fires by making early fire detection devices. With the presence of temperature and smoke detectors, we can detect fires as early as possible and be delivered quickly via alarms and SMS gateways. The main component of this fire detector is the Arduino Uno. This Arduino uno acts as the brain of the fire detection device. This tool works based on the detection of the temperature condition by the DHT11 temperature sensor, which is when the temperature is above normal, an alert notification will be sent via the SMS gateway and so will the MQ2 smoke and the buzzer will sound as a warning alarm.

scholarly journals Perancangan Sistem Fire Alarm Kebakaran Pada Gedung Laboratorium XXX

Jurnal Tekno ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 51-61
Author(s):  
Muhammad Ruslan ◽  
M.Saleh Al-Amin ◽  
Emidiana Emidiana
Keyword(s):  
Pump Power ◽  
Ground Water ◽  
Quantitative Research ◽  
Sprinkler System ◽  
Water Volume ◽  
Water Tank ◽  
Public Areas ◽  
Calculation Results ◽  
Pump Shaft ◽  
Smoke Detectors

Abstract   Fire is a phenomenon that occurs when a material reaches a critical temperature and reacts chemically with oxygen (for example) producing heat, flame, light, smoke, water vapor, carbon monoxide, carbon dioxide, or other products and effects. Fires can occur anywhere, be it in office buildings, residences or public facilities. As for other than in public areas, fires often occur, both in rooms and laboratories, the triggers are almost the same due to negligence and not being careful in using flammable tools. For this reason, the need for a fire detector with a detector system using an alarm so that once a fire occurs, all those in the building can find out through the detector with an alarm sound as a fire marker. In order to reduce casualties, the need for a sprinkler system to extinguish the fire, and can assist the officers or authorities in the building as soon as possible. From the above problems, this research will determine how many detectors and sprinklers are needed, as well as how much water volume, pump power, and ground water tank are needed. This type of research is quantitative research by direct observation of the object under study, then researchers measure the room one by one using a building meter. From the calculation results by taking a sample on the 1st floor, the number of detectors needed is 10 smoke detectors and 3 heat detectors, the number of sprinklers is 47, the volume of water needed is 846 m3, the pump power and ground water tank needed are hydraulic power. pump (HHP) 3,28621 kW, pump shaft power (BHP) 4.38 kW, pump electric power (P) 6 kW, diesel pump (PpD) 4 HP, jocky pump (PJk) 0.6 kW, capacity GWT ( QGWT) 44 m3.

scholarly journals Assessment of radiation doses from residential smoke detectors that contain americium-241

1981 ◽  
Author(s):  
F.R. O'Donnell ◽  
E.L. Etnier ◽  
G.A. Holton ◽  
C.C. Travis
Keyword(s):  
Radiation Doses ◽  
Smoke Detectors

A Successful City-Wide Smoke Detector Giveaway Program

PEDIATRICS ◽  
1985 ◽  
Vol 75 (1) ◽  
pp. 14-18 ◽  
Author(s):  
Richard L. Gorman ◽  
Evan Charney ◽  
Neil A. Holtzman ◽  
Kenneth B. Roberts
Keyword(s):  
High Risk ◽  
Fire Risk ◽  
Smoke Detector ◽  
High Risk Population ◽  
Inexpensive Method ◽  
Baltimore City ◽  
Risk Of Death ◽  
Smoke Detectors ◽  
Almost All ◽  
House Fires

Each year, 5,000 Americans die and 300,000 are hospitalized as a result of 2.8 million residential fires. Almost all house fires allow time for safe exit if an early warning is given. Smoke detectors are an effective, reliable, and inexpensive method of providing such warning. After an upsurge of deaths related to fires in 1982, Baltimore City gave away 3,720 smoke detectors to households that requested them. This study addressed two questions: (1) Did the households that received the smoke detectors install them? (2) Was the population reached by this giveaway program a population at high risk from fire? A survey of 231 randomly selected households among those requesting smoke detectors was conducted 8 to 10 months after the giveaway program. At that time, smoke detectors were installed in 92% (212/231) of the homes and 88% (187/212) of the installed smoke detectors were operational. Households requesting smoke detectors were in census tracts at higher risk from fire. The correlation coefficient between the rate of requesting a smoke detector and the risk of death or injury related to fires was r = .90, P < .001. The 231 surveyed households had more personal fire risk factors than the general population. The success of this smoke detector giveaway program is notable in that it required the active participation of a high-risk population.

Particulate Entry Lag In Spot-type Smoke Detectors

2000 ◽  
Vol 6 ◽  
pp. 779-790 ◽  
Author(s):  
T. Cleary ◽  
A. Chernovsky ◽  
W. Grosshandler ◽  
M. Anderson
Keyword(s):  
Smoke Detectors ◽  
Spot Type

Foam Insulation Behavior in Void Space Under Fire Conditions

2014 ◽  
Author(s):  
Andrew Kurzawski ◽  
Ofodike A. Ezekoye
Keyword(s):  
Oriented Strand Board ◽  
Construction Materials ◽  
Experimental System ◽  
Small Scale ◽  
Void Space ◽  
Gypsum Board ◽  
Space Construction ◽  
Smoke Detectors ◽  
Wood Frame ◽  
Frame Construction

A fire contained within a room can spread into void spaces in the walls and ceiling through penetrations in the material that lines the compartment. Few studies have looked at how a room and contents fire transitions to a structural fire. One of the active areas of fire research is the coupling of the fire to the structure. Lightweight wood frame construction represents the majority of residential construction in the U.S. The construction details and choice of materials will affect the overall fire resistance of the structure. Because of the relative lack of knowledge on the fire penetration into wall spaces, this research examined how fire might penetrate into the void spaces of wood framed structures. In the U.S.A., a critical barrier to the penetration of hot gas products into void spaces is provided by the gypsum-board skin of the compartment. For most compartments, there are many penetrations within the compartment’s gypsum-board skin. Common potential access points include security system wiring (e.q. smoke detectors and cameras), ventilation fixtures, light switches, and electrical outlets among others. A hole in the gypsum may create opportunities for void space ignition. One of the purposes of this work is to develop a small scale testing system to characterize fire driven flow and heat transfer into a void space. With such an apparatus, one can rapidly identify materials that are prone to igniting for a given leakage geometry and fire size. Common materials found in void spaces include wooden structural members, plywood/oriented strand board, a variety of insulation types, and vapor barriers. This study discusses the characteristics of the small scale experimental system and preliminary tests on a range of void space construction materials.

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