Flame arresters

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Description

Flame arrestors and flame filters are used as fire-fighting equipment on vertical tanks for storage of explosive petroleum products.

This equipment is the first stage of fire safety, which helps to protect the tanks and stored product from explosion and fire. The main purpose of flame arrestors and flame filters is to prevent sparks or flames from entering the gas space of the tank and reduce fire hazard.

Principle of action of flame arrestors and filters

Their work is based on heat absorption from a spark or flame: the cassettes of different materials included in the design bring down the temperature below the fire point of oil products. This does not arrest the operating product through the cassette.

Fire-stop assemblies (cassettes, tapes) can be made of foil, copper or aluminum alloys.

Flame arrestors and filters mounting

They are mounted on the roof of the vertical tanks under the breathing or safety valve and bolted to the counter flanges through the tightening. To protect the pipelines under pressure up to 1.6 MPa, they are installed at the site of a possible steam-and-gas mixture outlet.

Types of flame arrestors and flame filters

  • flame arrestor OP-AA
  • flame arrestor OP-AAN
  • flame arrestor PP
  • flame liquid filter POZH
  • flame communication filter POK

Flame arrestors OP

Flame arrestors OP-AA and OP-AAN protect the gas space of the tank against flame penetration. The fire-stop element, located in the body, consists of corrugated and flat ribbons, which restrain heat from the fire and extinguish it. They are manufactured of aluminium. The OP-AAN flame arrestor is split, which allows cassette inspection and its replacement if necessary.

Flame arrestor OP-AA Criteria OP-50АА OP-80АА OP-100АА
Flame arrestor OP-AA Diameter nominal DN 50 80 100
Throughout capacity at airflow resistance118 PA, m3/h 25 60 100
Height, Н, mm 80 80 94
Diameter, D, mm 140 194 207
Fixing hole diameter, mm 14 18 18
Number of fixing holes 4 4 4
Survival time, min.,min 10
Weight, kg, max 1,3 2,62 3,6
Flame arrestor OP-AAN Criteria OP
50AAN
OP
80AAN
OP
100AAN
OP
150AAN
OP
200AAN
OP
250AAN
OP
300AAN
OP
350AAN
OP
500AAN
Flame arrestor OP-AAN Diameter nominal DN 50 80 100 150 200 250 300 350 500
Throughout capacity at airflow resistance118 PA, m3/h 100 150 200 215 380 600 750 900 2200
Height, H, mm 172 200 197 231 255 243 275 419 317
Diameter,
Dн, mm
160 214 230 303 375 450 530 610 858
Connection size, mm D
D1
d
n, шт
141
110
14
4
184
150
17
4
205
170
17
4
262
225
18
4
315
280
18
4
370
335
18
6
435
395
22
6
485
445
22
6
644
600
22
16
Survival time, min.,min 10
Weight, kg,
max
3 5 6,1 10 16 27 30 45 74

Flame arrestors PP

Flame arrestor PP is temporary device, which prevents the flame penetration to the gas space of the tank. It is attached by flanges to the mount nozzle; there is a tightening between the flange and the body that ensures interface integrity.

The fire-stop element is made of flat or corrugated ribbon and can be manufactured of aluminum or stainless steel. The specified life of flame arresters PP of aluminum alloys is 5 years, of stainless steel - 10 years.

Flame arrestor PP Criteria PP-50 АА PP-100 АА PP-500 АА
Flame arrestor PP Diameter nominal DN, mm 50 100 500
Throughout capacity, m3/h 25 100 2200
Length (D), mm 92 148 910
Height (L), mm 80 423
Weight, kg 1.3 1.5 93

Flame liquid filters POZH

Flame liquid filters are used to prevent possible ignition of the tank for diesel fuel or gasoline storage, which can occur at the gas or steam outlet. They can be placed in cast-iron or aluminum housing. The fire-stop element is made of aluminum strips that accumulate the heat of the flame and extinguish it.

They are installation on the receiver pipe.

Flame liquid filter POZH Criteria POZH–80
Flame liquid filter POZH Diameter nominal DN 80
Pressure, MPa 0,25
Throughout capacity at airflow resistance118 PA, m³/h 80 – 100
Height (H), mm 94
Diameter (D), mm 207
Fixing hole diameter, mm 18
Number of fixing holes 4
Bolt circle diameter 170
Weight, kg 3.6
Survival time, min.,min 10
Specified life, years 8

Flame communication filters POK

Flame communication filters are installed on crude oil line to prevent the flame from moving through it. The maximum pressure in the pipeline is up to 1.6 MPa.

Their design is more reinforced, as the movement of the operating product occurs at high speed and at high pressure. Having a minimum hydraulic resistance, the liquid passes freely.

The fire-stop element has high heat resistance and fire resistance. When the flame passes through the flame-extinguishing element, the temperature drops below the flash-point of the inflammable liquid. Due to this, there is a flame extinction.

Flame communication filters POK are manufactured in climatic categories N and NF and placement category 1.

Flame communication filter POK Criteria POK-50 POK-80 POK-100 POK-150 POK-200 POK-250 POK-300 POK-
350
POK-
500
Flame communication filter POK Diameter nominal DN 50 80 100 150 200 250 300 350 500
Throughout capacity at airflow resistance118 PA, m3/h 25 75 100 215 380 600 300 900 2950
Overall dimensions, mm DH 215 245 280 335 460 520 600 710 840
H 300 303 380 430 490 495 575 737 820
Connection size, mm D 160 195 215 280 335 405 460 520 710
D1 125 160 180 240 295 355 410 470 650
d 18 18 18 22 22 26 30 26 33
n 4 8 8 8 12 12 12 16 20
Weight, kg,
max
20 28 39 55 113 145 245 290 545

How to purchase flame arrestors and filters at the Saratov Reservoir Plant?

In order to buy a flame arrestor and filter, You can:

  • call the Plant at +7(8452)250-288
  • e - mail at  with operational equipment requirement
  • use the form "Request for quotation"

 

See also:

Breather valvesSamplersTank hatches
Bottom cleanout boxesNozzles, nipples, connecting pipes, fittingsFlame arresters
Tank clap valves