Hydraulic Remote Controlled Water Monitors at LNG Loading Dock
Picture - 1 : Typical LNG Loading Dock
3S-FIRESTOP is Fire Protection Supplier &
Contracting company with product range covers
both active and passive fire protection systems.
In mid of 2008 cooperated with STANG INDUSTRIES Inc. , the manufacturer of water control equipments with experience more than 70 years, has won contract for installing water monitor to protect LNG Loading Dock of PT. Badak NGL, the 22-million tons LNG/year producer.
The location of the project is so called LNG Loading Dock II. The total unit installed is 8 units each 1,500 US GPM capacity. The monitor is remotely-controlled driven by hydraulic motor.
Scope of work including supply and install remote water monitors, control valve pneumatic-type with ex-proof 24 Vdc solenoid actuator, power and control cable erection, cable tray, stainless steel tubing (almost 12 km total length), tubing support, HPU fabrication, control table and control panel, construction of the operator room as well.
In mid of 2008 cooperated with STANG INDUSTRIES Inc. , the manufacturer of water control equipments with experience more than 70 years, has won contract for installing water monitor to protect LNG Loading Dock of PT. Badak NGL, the 22-million tons LNG/year producer.
The location of the project is so called LNG Loading Dock II. The total unit installed is 8 units each 1,500 US GPM capacity. The monitor is remotely-controlled driven by hydraulic motor.
Scope of work including supply and install remote water monitors, control valve pneumatic-type with ex-proof 24 Vdc solenoid actuator, power and control cable erection, cable tray, stainless steel tubing (almost 12 km total length), tubing support, HPU fabrication, control table and control panel, construction of the operator room as well.
While the contract agreement reached by almost
end of August 2008, the job shall be handed over
prior to end of year 2008.
This was very challenging, but by the end of the story 3S-Firestop can complete the job on December 31, 2008.
The purpose of using hydraulic type due to hazardous area classification (Zone 1 Div. 1). Second consideration that hydraulic system needs less maintenance comparing with electric motor driven type. This model needs frequent checking and greasing, otherwise the lifetime of the gear will be short due to exposure to sea water environment.
For safety purpose, all cables and tubing penetrations were sealed by ‘bst Firestop’ cable sealing, fire proof, water – and gas – tight.
This was very challenging, but by the end of the story 3S-Firestop can complete the job on December 31, 2008.
The purpose of using hydraulic type due to hazardous area classification (Zone 1 Div. 1). Second consideration that hydraulic system needs less maintenance comparing with electric motor driven type. This model needs frequent checking and greasing, otherwise the lifetime of the gear will be short due to exposure to sea water environment.
For safety purpose, all cables and tubing penetrations were sealed by ‘bst Firestop’ cable sealing, fire proof, water – and gas – tight.
Picture - 2 : Fig. 2 : Typical Remote-controlled Hydraulic Motor Driven
Water Monitor size 4” Waterway cap. 1,500 US GPM
(Courtessy of Stang Industries Inc.)
Picture - 3 : The Hydraulic Powerpack Unit w/ Ex-proof Electric AC Motor
Picture - 4 : The Hydraulic Motor Control Table
Picture - 5 : Situation inside the operator room
Picture - 6 : The Control Valve, Pneumatic-type, with 24Vdc Solenoid and Limit Switch Box
The challenge of water monitor installation is the
vaporizing size of water droplet. The smaller the
water droplet (like mist), the better heat absorption.
This is in correspond to avoid the LNG vapor
to reach its "flash point", in case there's a leak and
fire incident occured.
STANG Monitor has proven good reach distance
of water throw range in jet spray mode and good
water vaporizing in fog spray mode. The following
pictures will show the spray of the monitor.
As seen in the figure 7 and figure 8, the fog spray mode give very wide spread of water throw and vaporizing result.
It is like a cloud from the discharge of the monitor. This type of discharge is good for protecting the valuable assets due to it's high energy heat absorption.
However, the water supply capacity is also has to be taken into consideration. The main supply line is 16-inches size pipeline with several fire pumps backup. It will give enough water supply capacity and pressure.
As seen in the figure 7 and figure 8, the fog spray mode give very wide spread of water throw and vaporizing result.
It is like a cloud from the discharge of the monitor. This type of discharge is good for protecting the valuable assets due to it's high energy heat absorption.
However, the water supply capacity is also has to be taken into consideration. The main supply line is 16-inches size pipeline with several fire pumps backup. It will give enough water supply capacity and pressure.
Picture - 7 : Monitor in Jet Spray Mode
Picture - 8 : Monitor in Fog Spray Mode
Picture - 9 : LNG Loading Dock II of PT. Badak NGL
Inquiry?
ask us about fire dan safety protection. We also provide consultation regarding the installation of fire safety in a building or factory
Contact Us