OIL TANK FLOATING ROOF FIRE
PROTECTION
Tender number : 08-10-4140
Our reference : PRJ-130
Technical Offer – Oct.2011
Contents
1)
General Description ................................................................................................................. 3
1.1)
Overview .......................................................................................................................... 3
1.2)
Solution ............................................................................................................................ 4
1.3)
Materials Selected ........................................................................................................... 4
1.4)
Benefits Gained................................................................................................................ 5
2)
Information about the system: ................................................................................................ 5
3)
Technical specification and description of the system: ........................................................... 6
3.1)
10 crude oil tanks with a diameter of 74 m. .................................................................... 6
3.2)
8 crude oil tanks with a diameter of 61 m: ...................................................................... 7
3.3)
10 crude oil tanks with a diameter of 51 m: .................................................................... 8
3.4)
2 crude oil tanks with a diameter of 50 m: ...................................................................... 9
3.5)
4 crude oil tanks with a diameter of 91.64 m: ............................................................... 10
3.6)
4 crude oil tanks with a diameter of 76.12 m: ............................................................... 11
3.7)
2 crude oil tanks with a diameter of 37 m: .................................................................... 12
4)
Remarks and Spare ................................................................................................................ 13
5)
Conditions: ............................................................................................................................. 15
Annex 1 : Technical bulletin for FM-200®
Annex 2 : Technical bulletin for FE-36™
Annex 3 : Cylinder drawing
Annex 4 : P&I Diagram
1) General Description
1.1) Overview
Floating roof tanks are used for the transportation and storage of crude and refined
petroleum products. They have helped reduce tank fires by approximately 86 percent
since their introduction. They do, however, still have one weak spot. Between the rim of
the floating roof and the tank shell is an annular seal, where a flammable mixture of air
and vapor can collect.
To date, protection of this area has often been carried out by using Halon 1211 (phased
out since the end of 2003) or a foam system. Consisting of a total of eight components,
the complex system has many areas with a potential for failure and usually requires
some form of human intervention for activation. Regular drills, involving the pumping and
subsequent cleaning of the old foam, coupled with a high cost of maintenance, increase
the overall expense of ownership. Finally, as the foam only extinguishes by smoldering
the fire, it is a relatively slow process, increasing risk to the premises and nearby tanks.
1.2) Solution
Orfeo International, the Spanish market leader in high risk/high value protection, teamed
with DuPont to develop a new, automatic system based on the DuPont Fire
Extinguishant FM-200® or FE-36™. It consists of a delivery pipe (sited along the annular
seal) connected to a storage cylinder, both placed on the roof, in which FM-200® or FE36™ is held under pressure in a liquid state. Automated sprayers are located along the
delivery pipe and are opened upon the detection of heat from a fire. The extinguishing
agent is applied, directly, and the fire is out even before it has been spotted. At the same
time, an alarm is automatically activated in a central control room. he amount of gas
delivered from each nozzle is carefully calculated to deliver the proper amount of FM200® to each protected area.
The Orfeo FE-36™ or FM-200® system is used either as a stand-alone system or as an
add-on to a foam system, with successful results and numerous benefits.
1.3) Materials Selected
DuPont™ FM-200® is accepted and respected worldwide, with a history of protecting
some of the world's most critical and irreplaceable assets. In fact, FM-200® is in use in
over one hundred thousand applications, in more than 70 nations.
FM-200® systems reach extinguishing levels in 10 seconds or less, stopping ordinary
combustible, electrical, and flammable liquid fires before they cause significant damage.
That's the fastest fire protection available, period. When fire is extinguished this quickly,
it means less damage, lower repair costs, and an extra margin of safety for people. It
also means less downtime and disruption of business.
1.4) Benefits Gained
 Clean and effective fire suppression
The Orfeo system uses FM-200® or FE-36™, specifically developed to replace Halon.
These clean agents have instant extinguishing capabilities, and are leaving no residue to
be cleaned after extinguishing the fire.
 Fail-proof activation
The Orfeo system is low in cost, is prefabricated construction and is easy to install and
maintain. Each tank has its own independent system, where pressure and levels in the
storage system are continuously monitored. In the unlikely event of a leakage or
discharge, the drop in pressure is signaled in the control room. There is also automatic
monitoring of the overall system, ensuring day and night protection, even when no
personnel are present.
 Reduced maintenance, reduced operational costs
Maintenance is limited, subject to local regulations regarding equipment under pressure.
Each storage tank is divided into different zones, each with its own independent system.
Only the system protecting the area with a fire will be activated – and will need to be
recharged – offering minimal post fire costs and a shorter return to operations. A further
benefit is the reduced risk of having the whole tank unprotected in the period before the
system is recharged. Finally, comparable installation costs for one storage tank using
this system can be 75 to 80 percent lower than the equivalent cost of installation of a
new foam system.
2) Information about the
system:
Recipient material: AISI‐304 Stainless steel.
Quantity of FM-200 gas: 68 kg.
Propellant agent: Nitrogen.
Pressure: Stored pressure.
Pressure of the propellant agent: 8‐10 bar.
Hydrostatic pressure: 21.45 bar.
GL material inspection, hydraulic test and design
check
3) Technical specification and description of the
system:
3.1) 10 crude oil tanks with a diameter of 74 m.
Diameter Ø = 74 m
Perimeter = 232.48 m
Quantity of Sprinklers: 120 Sprinklers
Areas: 232.48 m / 40m = 5.81 areas  6 cylinders per tank.
Quantity of tanks = 10 tanks.
Scope of delivery per tank consists of:
-6 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with 68 kg
of FM-200® each***, equipped with IP65 pressure switch, pressure gauge, junction box
and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-6 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length with
nipple.
-120 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-120 brass sprinklers 93ºC.
3.2) 8 crude oil tanks with a diameter of 61 m:
Type of tank = Floating roof
Diameter Ø = 61 m
Perimeter = 191.63 m
Quantity of Sprinklers: 100 Sprinklers
Areas: 191.63m / 40m = 4.79 areas  5 cylinders per tank.
Quantity of tanks = 8 tanks.
Scope of delivery per tank consists of:
-5 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with 68 kg
of FM-200® each***, equipped with IP65 pressure switch, pressure gauge, junction box
and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-5 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length with
nipple.
-100 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-100 brass sprinklers 93ºC.
3.3) 10 crude oil tanks with a diameter of 51 m:
Type of tank = Floating roof
Diameter Ø = 51 m
Perimeter = 160.22 m
Quantity of Sprinklers: 82 Sprinklers
Areas: 160.22 m / 42 m = 3.81 areas  4 cylinders per tank.
Quantity of tanks = 10 tanks.
Scope of delivery per tank consists of:
-4 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with 68 kg
of FM-200® each***, equipped with IP65 pressure switch, pressure gauge, junction box
and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-4 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length with
nipple.
-82 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-82 brass sprinklers 93ºC.
3.4) 2 crude oil tanks with a diameter of 50 m:
Type of tank = Floating roof
Diameter Ø = 50 m
Perimeter = 157.1 m
Quantity of Sprinklers: 80 Sprinklers
Areas: 157.1 m / 40 m = 3.92 areas  4 cylinders per tank.
Quantity of tanks = 2 tanks.
Scope of delivery per tank consists of:
-4 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with 68 kg
of FM-200® each***, equipped with IP65 pressure switch, pressure gauge, junction box
and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-4 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length with
nipple.
-80 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-80 brass sprinklers 93ºC.
3.5) 4 crude oil tanks with a diameter of 91.64 m:
Type of tank = Floating roof
Diameter Ø = 91.64 m
Perimeter = 287.90 m
Quantity of Sprinklers: 140 Sprinklers
Areas: 287.90 m/42 m = 6.85 areas 7 cylinders per tank.
Quantity of tanks = 4 tanks.
Scope of delivery per tank consists of:
-7 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with 68 kg
of FM-200® each***, equipped with IP65 pressure switch, pressure gauge, junction box
and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-7 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length with
nipple.
-140 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-140 brass sprinklers 93ºC.
3.6) 4 crude oil tanks with a diameter of 76.12 m:
Type of tank = Floating roof
Diameter Ø = 76.12 m
Perimeter = 239.14 m
Quantity of Sprinklers: 120 Sprinklers
Areas: 239.14 m / 40 m = 5.97 areas  6 cylinders per tank.
Quantity of tanks = 4 tanks.
Scope of delivery per tank consists of:
-6 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with
68 kg of FM-200® each***, equipped with IP65 pressure switch, pressure gauge,
junction box and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-6 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length
with nipple.
-120 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-120 brass sprinklers 93ºC.
3.7) 2 crude oil tanks with a diameter of 37 m:
Type of tank = Floating roof
Diameter Ø = 37 m
Perimeter = 116.24 m
Quantity of Sprinklers: 60 Sprinklers
Areas: 116.24 m / 40 m = 2.9 areas  3 cylinders per tank.
Quantity of tanks = 2 tanks.
Scope of delivery per tank consists of:
-3 pieces AISI-304 stainless steel cylinder with a capacity of 100 dm3, stored with
68 kg of FM-200® each***, equipped with IP65 pressure switch, pressure gauge,
junction box and valve with coupling.
-Designed according to AD-Merkblatter rules, with Germanischer Lloyd certification.
-3 pieces of prefabricated AISI-316 stainless steel supply 1" pipe of 2 meters length
with nipple.
-60 pieces of prefabricated AISI-316 stainless steel 1/2" pipe of 2 meters length.
-60 brass sprinklers 93ºC.
4) Remarks and Spare
Item Description in Tender documents
Pressure Containers with
accessories. Incl. (valves, gauges &
1
cable junction boxes) with steel
supports skid & sun shade
2
3
4
Distributions galvanized steel piping
in standard length & diameter
Max o.pressure = (20 bar)
- required fitting ; couplings ; Tee
connections for sprinklers fixing
& mounting brackets with clamps .
- isolating valves & flanges o-rings
and other neccesary items .
- Quartz bulbs sprinklers male inlet
to BSP , ( single or multiple
discharge tips )
- ( Temp rating 93C° (NFPA)
requirement) chrome coated .
5
Other electrical accessories.
6
Fire resistant; salt & oil resistant
sheath flexible electric cable multi
core ((signal cables)).
Remark
Spare
Considered in the
offer
Specified according
to sys design per
tank of each group .
Deviation:
Stainless steel piping
is used instead of
galvanized piping
Considered in the
offer
Considered in the
offer
not needed
Parallel cable 2 x 1.5
red/black Pszh :
3000 MT
10% excess:
20 pieces of
prefabricated AISI316 stainless steel
supply 1’’ pipe of 2
meters length with
nipple
Tee connections for
sprinklers fixing:
Approximately 621
spare units
Pressure switches:
31 units
Spare quantity: 7000
units
7
8
9
10
11
Wall mounted Electronic control unit
(per each group of tanks to be
located in MCR (main control room)
،include (per each panel):- power
supply unit, sys. Status, sys release
in case of fire indication , full
annunciation, built in charger; sys
isolation device …test / reset &
other necessary options. Sys to be
intrinsically safe electrical rating IP
54
All electronic card to be plug - in
type
Included in
quotation: 1 control
panel for each tank.
4 sets of tools,
including:
Pipe binding
All installation tools ; consumables &
machine, pipe
pipe binding / cutting tools
cutting machine,
wrench and Teflon
rolls
Bulk agent, service containers
(acc. To DOT std. not less than 100
FM-200®: 20 TN
kg per cylinder, (sealed upright w/
top side twin port valve)
Spare parts for the whole system
major component ;( ITEMIZED
As described in
LIST). To be provided incl .
above items
Electronic cards.
sirens and alarm call
Other essential items for system
points: included in
integrity to be advised by supplier
item 7 above
5) Conditions:
Delivery time: 4-5 weeks for engineering after receive of LC, production 30 weeks
after drawings approval. (Partial shipment shall be arranged)
Delivery conditions: CIF Basrah
Payment conditions: 30% when placing the order, balance against irrevocable confirmed
Letter of Credit.
Commissioning and Set Up: Commissioning of the system for the 1st tank will be done by
our engineer(s). Also supervision of commissioning for other tanks can be arranged by our
engineers. Relevant cost for 1 engineer and 2 months is considered in the offer. In case
further engineers are required to be present at site by owner’s request, extra cost would be
invoiced separately.
Validity : 3 months from date of offer
Annex 1 : Technical bulletin for FM-200®
Annex 2 : Technical bulletin for FE-36™
Annex 3 : Cylinder drawing
Annex 4 : P&I Diagram