Fuel Farm – Fire Protection SystemPowerpoint Presentation

Prepared by : Vimal Lalloo

S/N : 42851874

EDP401-M

Design of the Fuel Farm :The Fire Protection system makes provision for the following :

Sprinkler cooling Ring around the tanks Top tank Foam Pourers Foam Bund Pourers Water Oscillating Monitors Foam Protection for the hydrant bay

The Tank Farm has been divided into 4 quadrants.The bund volumes have been sized to comply with the SANS 100 89

DESIGN STANDARDS :

The design of the fire system has been based on the following design standards :NFPA 11 – Low expansion foam systemsNFPA 15 – Exposure Protection SystemsBS5306 – Medium Expansion Foam Systems

BASIS OF DESIGN :

Based on the above , worst case scenario is provided when the furthest tank is on fire.

Detail of the side entry Top Tank Foam Injector

SPRINKLER COOLING RING & SPRAY NOZZLE DETAILThe Details below depict the sprinkler spray nozzles as well as the detail of the bracket that is welded

onto the outer tank face to support the cooling ring on which these nozzles are mounted on.

SYSTEM OPERATION IN THE EVENT OF A FIRE The jockey pump automatically keeps the fire water system pressurized at 1230 Kpa at The jockey pump automatically keeps the fire water system pressurized at 1230 Kpa at

all times – both water and foam mains are pressurized with water fed from the jockey all times – both water and foam mains are pressurized with water fed from the jockey pumppump

All valves except the remotely controlled inbal valves in the foam and water ring mains All valves except the remotely controlled inbal valves in the foam and water ring mains around the tank farm are normally openaround the tank farm are normally open

All application valves delivering water and foam from the ring mains into the tank farm All application valves delivering water and foam from the ring mains into the tank farm are normally closed are normally closed

Water and foam pump suction and discharge valves are normally openWater and foam pump suction and discharge valves are normally open The following valves must be remotely opened from the fire control panel in the control The following valves must be remotely opened from the fire control panel in the control

room for the bund area and the specific tank where foam is required for fire fighting:room for the bund area and the specific tank where foam is required for fire fighting: 1. Foam valve for bund foam supply for fighting bund fire1. Foam valve for bund foam supply for fighting bund fire 2. Foam valve for tank foam supply for fighting tank fire2. Foam valve for tank foam supply for fighting tank fire 3. The water valves for tank exposure protection (cooling) must be opened remotely 3. The water valves for tank exposure protection (cooling) must be opened remotely

/manually for tanks adjacent to the tank fire and all tanks in bund in case of a bund fire/manually for tanks adjacent to the tank fire and all tanks in bund in case of a bund fire A pressure switch on the discharge manifold in the pump house will start water pumps A pressure switch on the discharge manifold in the pump house will start water pumps

when water main loses pressure and jockey pumps cannot sustain full pressure anymore.when water main loses pressure and jockey pumps cannot sustain full pressure anymore. The activation of the foam bund protection or the top foam pourer control valves will The activation of the foam bund protection or the top foam pourer control valves will

relay a signal to the foam pump control panel to start the foam pumps and open the relay a signal to the foam pump control panel to start the foam pumps and open the control valve allowing water to flow into the foam proportioning system. control valve allowing water to flow into the foam proportioning system.

The Water Oscillating Monitors are used for additional tank cooling.The Water Oscillating Monitors are used for additional tank cooling. This procedure can be followed for any tank / bund fire scenarioThis procedure can be followed for any tank / bund fire scenario

FIRE INSTALLATIONFIRE INSTALLATION

Main and standby fire pump -diesel driven – KSB centrifugal pump – heat exchanger – 23000 Main and standby fire pump -diesel driven – KSB centrifugal pump – heat exchanger – 23000 L/min @ 1000kpa.L/min @ 1000kpa.

Jockey pump – 50L/min @ 1000KpaJockey pump – 50L/min @ 1000Kpa 2 000 000L water tank2 000 000L water tank GMS suction and delivery pipesGMS suction and delivery pipes Valves, gauges and strainersValves, gauges and strainers Fire water test pipeFire water test pipe Pump Control panels with 3 leg auto startPump Control panels with 3 leg auto start 300mm uPVC class 16 underground fire water reticulation pipes300mm uPVC class 16 underground fire water reticulation pipes Triple head 65 mm hydrantsTriple head 65 mm hydrants Tank cooling nozzles and ringTank cooling nozzles and ring Angus Water monitors Angus Water monitors Inbal solenoid activating control valves – remotely activatedInbal solenoid activating control valves – remotely activated Carbon steel reticulation pipes (These pipes are designed to withstand high pressures)Carbon steel reticulation pipes (These pipes are designed to withstand high pressures) Isolation valves, orifice plates and gaugesIsolation valves, orifice plates and gauges uPVC class 16 underground reticulation pipes. (These are the supply pipes from the uPVC class 16 underground reticulation pipes. (These are the supply pipes from the

pumphouse.)pumphouse.) Control panel for fire system activationControl panel for fire system activation

PLAN LAYOUT OF FUEL FARMPLAN LAYOUT OF FUEL FARM

Water oscillating monitorsWater oscillating monitors – These monitors are linked to the control panel & activate in the event of a fire.They – These monitors are linked to the control panel & activate in the event of a fire.They are placed at suitable positions around the bund wall.In most cases, they are situated close to the bund are placed at suitable positions around the bund wall.In most cases, they are situated close to the bund pourers.The layout & design accommodates for 8 water oscillating monitors with a maximum discharge of pourers.The layout & design accommodates for 8 water oscillating monitors with a maximum discharge of 3600L/minute.Depending on the direction of the wind, only 2 monitors will be used at any given time.3600L/minute.Depending on the direction of the wind, only 2 monitors will be used at any given time.

Typical Plan layout of Water oscillating monitor placed internally in the bund area

1. Foam injection through top tank foam pourers.1. Foam injection through top tank foam pourers. – When the tank is on fire, foam – When the tank is on fire, foam will be injected onto the surface of the fuel inside each tank.The foam supply will be injected onto the surface of the fuel inside each tank.The foam supply to this foam pourer is from a vertical feeder pipe which is run vertically from to this foam pourer is from a vertical feeder pipe which is run vertically from the bottom of the tank to the top of the tank.This will be at side entry to the the bottom of the tank to the top of the tank.This will be at side entry to the

tank as shown in this illustration.tank as shown in this illustration.

Foam injection via fixed bund pourersFoam injection via fixed bund pourers – These foam pourers are located on the bund wall which – These foam pourers are located on the bund wall which encloses the 4 jet tanks.This is a low height wall which serves the purpose of retaining the fuel in the encloses the 4 jet tanks.This is a low height wall which serves the purpose of retaining the fuel in the bund area in the event of a fire where we will have fuel spillage..Therefore these pourers inject foam bund area in the event of a fire where we will have fuel spillage..Therefore these pourers inject foam

onto the floor of the bunded area typically as shown.onto the floor of the bunded area typically as shown.

1. Foam injection through Bund foam pourers.1. Foam injection through Bund foam pourers. – When the tank is on fire, foam – When the tank is on fire, foam will be injected onto the floor of the internal bunds.The bund is divided intowill be injected onto the floor of the internal bunds.The bund is divided into4 quadrants & each tank is enclosed by dwarf walls to retain the fuel in 4 quadrants & each tank is enclosed by dwarf walls to retain the fuel in each individual quadrant to avoid unneccessary spillage near the tanks that each individual quadrant to avoid unneccessary spillage near the tanks that are not affected.are not affected.

Diagrammatic Representation ofDiagrammatic Representation ofFoam supply into tankFoam supply into tank

Isometric layout showing Tanks & PipingIsometric layout showing Tanks & Piping

TOP TANK FOAM POURER DETAILTOP TANK FOAM POURER DETAIL

>>This drawing shows a typical Side entry Foam InjectorThis drawing shows a typical Side entry Foam Injector>The feeder pipe runs vertically along the side of the tank>The feeder pipe runs vertically along the side of the tank>The brackets are supported at 3m intervals & are welded to the side face of each tank>The brackets are supported at 3m intervals & are welded to the side face of each tank

OPERATING SEQUENCE FOR FOAM POURERS IN BUNDED AREASOPERATING SEQUENCE FOR FOAM POURERS IN BUNDED AREAS

> This illustration represents the plan view of the tank farm showing the divisional bund > This illustration represents the plan view of the tank farm showing the divisional bund wallswalls> The Fire system operates such that only the foam pourers in the quadrant that contains > The Fire system operates such that only the foam pourers in the quadrant that contains the fire will activate.the fire will activate.> These foam pourers will have to be manually activated from the control room.> These foam pourers will have to be manually activated from the control room.> An automatically activated system is not suitable due to the error of a false alarm.> An automatically activated system is not suitable due to the error of a false alarm.

PIPE TRENCH DETAILPIPE TRENCH DETAIL>This detail shows the layout & arrangement of the feeder pipes>This detail shows the layout & arrangement of the feeder pipesthat run along the outside of the bund wallthat run along the outside of the bund wall>The Fire & Foam supply piping run around the outside of the bund walls.>The Fire & Foam supply piping run around the outside of the bund walls.>The piping is supported using galvanized brackets mounted to the outside face of the >The piping is supported using galvanized brackets mounted to the outside face of the bund wallbund wall

Objective of DesignObjective of Design

1.1. To create a working model of a fire protection system that is specifically designed To create a working model of a fire protection system that is specifically designed to accommodate for the highest possible Fire Protection coverage for a fuel farm.to accommodate for the highest possible Fire Protection coverage for a fuel farm.

2.2. This design proposal was intended to be highly effective without compromising the This design proposal was intended to be highly effective without compromising the feasibiltyfeasibilty

& cost factors that were involved.& cost factors that were involved.

3.3. To provide the client with a meaningful design that could be logically & clearly To provide the client with a meaningful design that could be logically & clearly understood with regards to cost, maintenance & reliability.understood with regards to cost, maintenance & reliability.

4.4. To provide a design proposal that will be accepted with regards to standards & To provide a design proposal that will be accepted with regards to standards & regulations.regulations.

55. To keep the design as simple as possible & yet still being as effective & reliable as . To keep the design as simple as possible & yet still being as effective & reliable as possible.possible.

ConclusionConclusion

>The fire protection design is in accordance with international standards. The >The fire protection design is in accordance with international standards. The equipment that has been installed for the fire protection system is UL and Lloyds equipment that has been installed for the fire protection system is UL and Lloyds listed. All pumps are Automatic Sprinkler Inspection Bureau (ASIB) approved. listed. All pumps are Automatic Sprinkler Inspection Bureau (ASIB) approved.

>The design of the fire protection system includes for future expansion provided >The design of the fire protection system includes for future expansion provided that the flow and pressure demand is not greater.that the flow and pressure demand is not greater.

>Regular maintenance and testing must be scheduled to ensure that the systems >Regular maintenance and testing must be scheduled to ensure that the systems capabilities are not compromised. A register must be maintained for testing and capabilities are not compromised. A register must be maintained for testing and maintenance purposes.maintenance purposes.

>The operator of the facility must be trained in the operation of the fire protection >The operator of the facility must be trained in the operation of the fire protection system. The systems capabilities and limitations must be communicated to staff system. The systems capabilities and limitations must be communicated to staff responsible for operating them.responsible for operating them.

>If the type of product stored changes, the system design must be revised to >If the type of product stored changes, the system design must be revised to accommodate the product based on the information provided on the Material accommodate the product based on the information provided on the Material Safety Data Sheet (MSDS).Safety Data Sheet (MSDS).