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Jet fire test

We have a long experience in jet fire testing and has been involved in the development of several jet fire test standards used by the industry and the authorities today. Our facility enables testing of complex combinations of one or several jet fires with varying heat flux levels.

Cause

Jet fires represent a major fire risk in installations with pressurized hydrocarbons. Jet fires may vary with respect to flame length, heat flux and velocities, and important influencing factors are the type and nature of the fuel, pressure and amount of fuel, geometry of the rupture, and surrounding conditions. The geometry of the structure may also be an important parameter with respect to the resistance of the passive fire protection exposed to a jet fire.

We can offer jet fire tests to document the resistance capabilities of passive fire protection materials against jet fires. We offer single tests or test series comprising of one or several jet fires, as well as jet fires in combination with varying heat flux levels, for example fires following the HC curve. Jet fires can be conducted with heat flux up to 350-400 kW/m². 

Method

Standard jet fire

The objective of a standard jet fire test is to determine the resistance of passive fire protection materials and systems to jet fires. It gives an indication of how passive fire protection materials behave in a jet fire. The test methods ISO 22899-1 and OTI 95634 cover: 

- Tubulars
- Panels
- Structural steel
- Pipe- and cable penetrations

High heat flux jet fires

Our extended jet fire furnaces can be used where standard jet fires are insufficient: 

- higher temperatures (1300 – 1400 °C)
- higher heat fluxes (350 kW/m²)
- for larger test specimens (Ø ~1 m)

HC - Jet combination test series

Used for certification of different specifications, with the possibility to interpolate between tests. This enables us to test variations of the fire protection in multiple test subjects in a single horizontal furnace HC-test, and then compare this to a selection of variations subjected to a jet fire test. 

- HC fire (pool fire), horizontal furnace
- Jet fire
- Jet fire addition

Sequential jet and pool-fire test

The extended jet fire furnace can be used to simulate the exposure inside a HC fire furnace. This gives us the ability to perform a combination of jet fire directly followed by a simulated HC-fire in the same test. For example: 

- 350 kW/m² jet fire for 15 minutes + 2 hours pool fire.

Pressurized pipes, valves and end connections

We offer testing of pressurized pipes, valves and end connections according to API standards.

Mini jet-fire

This is a smaller-scale test set-up mainly developed for product development and realistic screening tests. The mini jet uses a premixed flame of air and propane to obtain similar temperature as in a standard jet fire according to ISO 22899-1. The flame temperatures are similar, but the erosion effect on the test subject is not comparable.

Deliveries

The results will be summarised and presented in a report.

Ordering

Contact our contact person, either by phone or e-mail.

Facts

Service

Jet fire test

Innovation area

Fire safety, Risk and safety

Delivery level

Non-accredited

Standards

ISO 22899-1 Determination of the resistance to jet fires of passive fire protection materials — Part 1: General requirements

OTI 95634 Jet-fire resistance test of passive fire protection materials

Price

Price on tender

Preparations

No preparation needed

Robert Olofsson

Contact person

Robert Olofsson

Ingeniør

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Contact person

Espen Daaland Wormdahl

Avdelingssjef

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