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Fire Suppresion System QTEC - Operation and Maintenance Manual (Part 1)

Part 1 
Fire Suppression System

Merupakan suatu sistem yang didesain untuk mencegah, dan atau memadamkan terjadinya kebakaran. Fire Suppression System merupakan kombinasi antara perangkat sistem pendeteksi dini dan perangkat sistem penindakan yang mampu bekerja secara bersamaan dan secara otomatis. Biasanya di pasang di dekat bagian Engine (Mesin) pada Alat-Alat Berat di Pertambangan.

Ada beberapa Brand Fire Suppression System yang pernah saya lihat, diantaranya: CHUBB dan QTEC, pada kesempatan ini yang akan kita bahas adalah: QTEC.

Deskripsi Sistem
1.1 Sistem VDAS (Vehicle Detection Actuation Suppression)

Ada 2 Type: ROP (Rise of Pressure) dan LOP (Loss of Pressure)
ROP dan LOP terdiri dari 3 komponen:
a. Sistem pendeteksian otomatis (Automated Detection System) dan manual oleh operator di dalam kabin atau pada penempatan eksternal sesuai pada peralatan via remote actuator.
b. Silinder / penyimpanan berisi 6% film mengandung air yang membentuk busa (AFFF), yang diberi tekanan dengan gas nitrogen pada tekanan 1,350 kPa (pada 20°C).
c. Line distribusi hose dan stainless steel tubes untuk menyalurkan AFFF (Aqueous Film-Forming Foam) ke seluruh nozzel yang terpasang.

1.2 Model Aplikasi Layout
Berikut layout ROP System:

Berikut layout LOP System:



Komponen
1.1 Cylinder Valve



1.2 LPRM (Linear Pressure Release Module)
LPRM hanya digunakan pada ROP sistem.


1.3 Actuator System
 
Satu remote aktuator harus terpasang di dalam kabin atau dekat dengan operator. Direkomendasikan setidaknya ada satu remote aktuator berada di luar kabin yang lokasinya berada pada jalur akses yang jauh dari daerah bahaya.

1.4 Cylinder


Cylinder AFFF dibuat dari stainless steel grade 304. Cylinder dipenuhi dengan AFFF ANSUL 6% (FOAM), air dan diberi tekanan nominal 1.350 kPa @ 20 ° C.

ROP cylinder fill quantity
LOP cylinder fill quantity
AFFF cylinder assembly details
1.5 Alarm Panel / Controller


Panel shutdown akan memantau dan mengontrol jika terjadi kebakaran dimulai dari kondisi engine mati, ketika terjadi kebakaran / loss pressure alarm panel akan secara otomatis mematikan engine serta memberikan peringatan dengan suara alarm dan visual. Ini juga akan memantau dan mengontrol kondisi silinder jika tekanannya rendah.

Mesin akan mati secara tiba-tiba dan bisa ditunda tetapi tidak dapat dibatalkan oleh operator.

1.6 Pressure Switch

Pressure switch digunakan untuk memonitor tekanan silinder, deteksi alarm kebakaran dan mematikan mesin dari panel alarm. Pressure switches tersedia dalam 3 pengaturan:
-200 kPa
-800 kPa
-1,100 kPa

1.7 Nozzle


Nozzle Type & Coverage 
 
Nozzle details

Nozzle Coverage
Nozzle Overlap 40%
Minimum jarak antara nozzle dengan permukaan kebakaran / bahaya mencapai 40%

Details Overlapping

X = Jarak dari ujung nozzle ke permukaan kebakaran / bahaya.
Y = Jarak antar nozzle (centre ke centre).
W = Diameter dari coverage area.
Z = 40% overlap pada diameter coverage area.




Read More:
Fire Suppresion System QTEC - Operation and Maintenance Manual (Part 2)







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