PHYM Low Expansion

Foam FiFre Extinguishing System

(Pressured Type)

Introduction Manual

Marine Fire Fighting Equipment Department

CONTENTS 1. General Description

2. Structural Features and Operating Principles

3. Technical characteristics

4. Installation

5. Commissioning and Application

6. Maintenance

7. Faults Analysis and Elimination

8. Cautions

9. Design and Types Selection

10. Chart

1. General Description PHYM series low expansion foam proportioning device (hereinafter referred to as “the device”) is designed for use in fixed foam fire extinguishing systems. It is mainly used at places where low expansion foam extinguishing system is required for protection, such as, oil field, oil refining plant, petrochemical plant, garage, plane warehouse, oil ship and dock etc. It supplies a foam solution at a certain proportioning ratio to the foam generator, nozzle, branch pipe, monitor and other discharge devices to produce foam for extinguishing class B water-soluble fires as well as non water-resistance fires, etc. This device adopts low expansion foam concentrate. AFFF type foam concentrate (hereinafter referred to as “foam concentrate”.) is recommended. Executive standard of the device: Q/3201NXQ109-2000, Low Expansion Foam Fire Extinguishing System Component. 1.1 Type descriptions: PH YM 64 / □ Capacity of storage (L) Max. flow rate 64L/s Foam proportioning device Foam device E.g. PHYM64/3000 indicates that the capacity of storage is 3000L. 1.2. Application Diagram for Low Expansion Foam Fire Extinguishing System

2. Structure Features and Operating Principles 2.1 Structure Features This device consists of foam concentrate storage tank with bladder in it, foam proportioner, water feed pipe, foam concentrate outlet pipe, vent pipe, foam level indicator and drain pipe etc.. Each pipe has a ball valve (manually operated). The foam proportioner is installed on one side of the storage tank. The tank body thoroughly connects to the foam proportioner through the water feed pipe and concentrate outlet pipe. The safety relief valve and pressure gauge are installed on the water feed pipe and vent pipe separately. See figure 3. The drain pipe, water feed pipe, concentrate outlet pipe and vent pipe forms a complete cleaning circuit which can clean the storage tank body, outlet pipe and foam proportioner completely with water so as to clean away dirt and foreign substances from tank body and pipes. The safety relief valve on the device opens to release pressure when the pressure inside the storage tank exceeds 1.05 ~ 1.1 times max. operating pressure. When the pressure inside the storage tank drops to normal operating pressure, it closes for protecting the storage tank. 2.2 Operating Principles This device is a horizontal bladder type. A high strength rubber bladder contained inside the storage tank separates the foam concentrate and water completely. Its working principle is that the pressurized water displaces equivalent foam concentrate (see figure 3). The device offers foam concentrate in a certain proportion (3% or 6%) every time when used. The residue foam concentrate can be continually used after fire so that the foam concentrate can be saved furthest to reduce the fire extinguishing cost.

When the system works, the storage tank fills with water to displace foam concentrate into the foam proportioner and mixes it with water in a certain proportion so as to produce low expansion foam solution and convey it out from

the outlet of the proportioner. 3. Technical Characteristics Table 1: main performance and parameters Flow rate of foam solution(L/s) 4~32、16~64、24~80 16~24; 24~80

Inlet operating pressure of the proportioner (Mpa)

0.60~1.20、0.60~1.60 0.60~1.20; 0.60~1.60

Proportioning rate 3 or 6 3% or 6% Capacity of storage tank (L) 1000~10000

1000~10000

Pressure loss at inlet and outlet of proportioner (Mpa)

≤15

≤0.15

Inlet and outlet diameters of the device (mm)

Φ100、Φ125、Φ150

Φ100; Φ150

Ambient temperature (℃) 0～40 0℃∽40℃

4. Installation 4.1 The installation for PHYM series low expansion foam proportioning device shall be carried out according to relative stipulations in GB50281-98, Code for Engineering and Acceptance Check for Foam Fire Extinguishing System.

4.2 the bottom case of the storage tank shall be fixed firmly to the base ground. Ground bolts shall be use when installation. The installation position and height of the storage tank shall comply with codes and design requirements. If there is no special design stipulations, a 700mm-width passage shall be reserved around the storage tank. The distance between the tank top and ceiling or girder bottom shall not be less than 1000mm. 4.3 For installation dimensions, refer to table 2. 4.4 The device shall be installed in an enclosure space not subject to freezing conditions and exposing to weather. If it is installed outside, heatproof, rainproof and freezing proof facilities shall be provided according to environment conditions. 4.5 All connecting flanges for the device shall be standard flanges. (please indicate when ordering if they are supplied along with the device). 5. Commissioning and Application 5.1 Standby state: When the device is in standby state, all valves shall be closed. The foam concentrate filling operation shall be conducted as following procedures after the device has been installed. 5.1.1 fill water and foam concentrate into the storage tank, way 1 (fill from lower filling inlet): Requirements: fill water first, and then foam concentrate. The filling rate shall be 1L/s or so. Pump delivery head is 5m or so. Fill water with pump (for foam concentrate filling mode, see figure 5. Fill water before the bladder vents shall be forbidden): For valves numbers, see figure 4.

Fill water

Open pipeline drain valve 6 and connect to water supply pump

Open

Tank vent valve 2 Tank drain valve 5

Fill water

Close tank vent valve 2 to stop filling water when water flows out from the valve 2, open liquid level indicator valve 7 to inspect water level

Close

Tank drain valve 5

Remove water supply pump, empty residual water

To fill foam concentrate

Bladder vent valve 8

Bladder vent valve 8

Water filling flow chart Fill foam concentrate (fill from lower filling inlet) Fill foam concentrate with pump:

Fill foam concentrate

Open

Pipeline drain valve 6 Tank vent valve 2

Fill foam concentrate

Stop filling when no water flows out of tank vent valve 2

Close Bladder drain valve 4 Tank vent valve 2

Fill water to clean filling pipe and liquid level indicator pipe

Close

Pipeline drain valve 6

Finish

Liquid level indicator valve

Bladder drain valve 4

Foam concentrate filling flow chart

5.1.2 Fill water and foam concentrate, way 2 (fill from upper filling inlet): Fill water from the upper filling inlet (see figure 6):

Fill water

Screw off end cap from the upper filling inlet

Open

Tank vent valve2 Tank drain valve5

Fill water from the upper filling inlet

Close valve 2 to stop filling when water flows out of the tank vent valve 2, open liquid level indicator valve 7 to inspect water level

Close

Upper filling inlet Tank drain valve5

Open pipeline drain valve 6 to empty residual water, then close valve 6

To fill foam concentrate

Bladder vent valve8

Bladder vent valve 8

Water filling flow chart Fill foam concentrate from the upper filling inlet:

Fill foam concentrate

Screw off end cap from the upper filling inlet

Open

Tank vent valve 2

Fill concentrate from the upper filling inlet

Stop filling when no water flows out of the tank vent valve 2

Close

Bladder drain valve 4 Upper filling inlet Tank vent valve 2

Open pipeline drain valve 6 and fill water to clean the filling pipe and liquid level indicator pipe

Close

Liquid level indicator valve 7 Pipeline drain valve 6

Finish

Bladder drain valve 4

Foam concentrate filling flow chart 5.2 Fire fighting application:

Fire pump acts

when fire signals occur

When water supply pressure reaches to required pressure

Open water inlet valve 1

When pressure in the tank vent pipe reaches to required value

Open foam concentrate outlet valve 3

The foam solution is discharged as a certain proportioning rate 5.3 Stop operating:

After extinguishing a fire successfully

Close

Water inlet valve1

Open

Tank vent valve 2, then close after releasing pressure

Clean pipeline

Close water pump

5.4 Cleaning and follow up work

Foam concentrate outlet valve 3

Repeat 5.1.1 or 5.1.2 to fill foam concentrate so that the device is to be in standby state. 6. Maintenance 6.1 The maintenance and managerial personnel shall understand the working principles, performance and operating requirements of the low expansion foam fire extinguishing system. 6.2 The maintenance and the management for the device shall be conducted according to relative stipulations of GB50281-98, Code for Engineering and Acceptance Check for Foam Fire Extinguishing System. 6.3 The device shall be checked periodically and made notes for proper operation. 6.4 The device together with system shall be run once every 2 years. All valves, pipes and accessories shall be checked in good order. 6.5 Safety valve on the device shall be checked once every year. 6.6 Pressure gauge, valves, pipes and accessories on the device shall have external appearance inspection each quarter. 6.7 Valves, such as, valve 1, valve 3, valve 4, valve 5 and valve 6 shall have opening and closing tests periodically (at least once each month) to prevent from sticking or self-locking. 6.8 Clean the storage tank and pipeline shall be thoroughly cleaned with water after use. The surface shall have a touch-up painting for corrosion resistance if necessary. 6.9 Screw off the end cap at the bottom of the device to clean the foam concentrate pipe completely. 6.10 If it is necessary to replace prolonged stored foam concentrate, open valve 4, valve 8 and valve 6 to empty it completely, then close them again. Repeat 5.1 for filling. 6.11 If it is necessary to display the foam concentrate level, open valve 2, valve 5 and valve 6 to empty water from the tank, and then close these valves. Open valve 4 and valve 7 to display the level of foam concentrate. If the foam concentrate level is 80% lower than the capacity of the bladder or less than design storage capacity, repeat item 5.1 to fill foam concentrate. 6.12 Regular sampling check for the foam concentrate shall be conducted according to manufacturer’s requirements. 6.13 The foam storage tank shall avoid direct sunshine and be stored at places where temperature variation is small. 7. Faults Analysis and Elimination 7.1 Water can not be filled into the storage tank: check valve 2, valve 5 and valve 8 to be opened or not (if water is filled from lower filling inlet, the valve 6 shall be opened).

7.2 Foam solution cannot be filled into the bladder: check valve 4 to be opened or not, and open valve 8 slightly to empty air. If foam solution spills out, close valve 8 (if water is filled from the lower filling inlet, the valve 6 shall be opened). 7.3 Water goes out brokenly from valve 2 after venting air: when filling water or concentrate into the storage tank, the bladder may block the vent valve of the tank. Open valve 5 and valve 6 to drain some tank water, and then close. Open valve 1 to inlet water. If water can flow out continuously, it shows that the valve 2 is normal. 7.4 Foam concentrate is drained out along with water when draining water to display the concentrate level: the bladder inside the storage tank may be aging. Replace the old bladder or maintain it by professional maintenance personnel or supplier (note: the bladder shall have a life of at least 5 years). 7.5 Foam concentrate can not be output freely: check valve 1 and valve 3 to be opened or not. Check air or water is vented from valve 2 or not. Vent air first, and then water before close. 7.6 Proportioning rate of the foam solution is smaller: check valve 3 to be opened completely or not. 8. Cautions 8.1 Lifting lugs welded on the foam proportioning device are used for lifting during transportation and installation. Piping or other fittings of the device shall not be used as lifting lugs. Any hit or damage when lifting shall be forbidden in order to avoid any displacement of spare parts or leakage. 8.2 Check all connecting pipes and flanges to be firmly connected or not, and all valves to be in closed standby state before the device is put into operation. 8.3 The foam concentrate shall be filtered when filling. Adopt the same type foam concentrate produced by the same manufacturer. Mixing with water or oil or other type liquids shall be forbidden. The type of the foam concentrate shall be acceptable for specific protected objects. 8.4 Excessive air shall be avoided to mix into the bladder when filling concentrate in order not to affect the filling capacity. 8.5 Read the instruction manual carefully before use, and operate strictly as the requirements. 8.6 Foam concentrate shall be filled according to design quantity of the fire extinguishing system when the device is in standby state. 8.7 Notify supplier immediately if any abnormal condition occurs during the maintenance or operation. The supplier shall provide technical instructions or field service.

9. Design and Type Selection 9.1 For design and choice for the foam fire extinguishing system, please refer to NFPA standard, or our national standard GB50151-92, Code for Design for the Low Expansion Foam Fire Extinguishing System. 9.2 The range of operating pressure and the flow rate shall be taken into consideration. 9.3 When a device is designed for use within the range of flow rate at 16~64L/s and the range of operating pressure at 0.6~1.2Mpa, the inlet and outlet flange diameters of the main piping shall beΦ100. For specific connecting sizes, please refer to figure 4. 9.4 When a device is designed for use within the range of flow rate at 24~80L/s and the range of operating pressure at 0.6~1.2Mpa, the inlet and outlet flange diameters of the main piping shall beΦ150. For specific connecting sizes, please refer to figure 4. 9.5 Several specifications of storage capacities are available (see table 2), which can be designed and manufactured according to customer’s requirements. 9.6 The accessory pipes for connecting to the bladder drain pipe and tank drain pipe can be determined according to exit engineering facilities, and sewer positions, etc.. 9.7 The installation environment of the device shall have an upper water supply device and a lower water supply device. 9.8 The storage capacity (L) of foam concentrate, flow rate (L/s) of foam solution, operating pressure (Mpa), proportioning rate (%), or other additional requirements, such as, diameters of connecting pipes (mm), flange type, electromotion valve and circuit control, and other special requirements shall be indicated clearly when ordering. 9.9 The foam concentrate storage capacity shall be calculated according to stated foam concentrate supply intensity, the quantity of foam branchpipe and sequence supply time, the residual quantity in foam concentrate tank and necessary quantity in full pipeline, shall be also taken into consideration. 9.10 Curved diagrams for the flow rate of foam solution – storage capacity shall be supplied for reference for the system design and pattern selection.

curved diagram for flow rate of foam solution-- storage tank

081624324048566472808896104112120128136144152160

0 1000 2000 3000 4000 5000 6000 7000 8000 9000

storage capacity（L）

flow

rate

of f

oam

sol

utio

n (L

/s)

time: 30min proportioning rate: 3%

curved diagram for flow rate of foam solution--storage tank

0

8

16

24

32

40

48

56

64

72

80

88

96

104

112

120

1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000

storage capacity (L)

flow

rate

of f

oam

solu

tion

(L/s

)time: 30min proportioning rate 6%

Table 2：Dimension （for reference）

L B H h L1 H1 Residual quantity（L）

PHYM64/1000 2700 1250 1600 704 1480 530 ≤100

PHYM64/1500 2800 1350 1750 704 1700 590 ≤120

PHYM64/2000 2600 1550 1950 754 1100 660 ≤120

PHYM64/3000 2900 1750 2150

754 1200 780 ≤125

PHYM80/3000 780

PHYM64/4000 3250 1850 2250

754 1500 840 ≤150

PHYM80/4000 780 PHYM64/5000

3500 1950 2350 804

1700 900 ≤150 PHYM80/5000 830 PHYM64/6000

3550 2050 2450 804

1680 960 ≤170 PHYM80/6000 830

PHYM64/8000 4800 2050 2450

854 2680 960 ≤220

PHYM80/8000 880 PHYM64/10000 4600 2200 2600

854 2500 1120 ≤250 PHYM80/1000

0 880

Note: since technical parameters of this device may be changed, they shall be subject to check and test report and packing list.

Dimension Data

Types