Water Control Solutions

BERMAD Fire Protection

Reducing Water Pressure Surge and Water Hammer in Fire Protection Systems

Water surge or water hammer is a pressure wave in a piping system caused when a fluid in motion is forced to stop or change velocity or direction suddenly. Pressure surges in fire water systems can be caused by a number of different factors, such as a valve closing or opening too quickly or a pump starting or shutting down suddenly. This momentum

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Water surge or water hammer is a pressure wave in a piping system caused when a fluid in motion is forced to stop or change velocity or direction suddenly. Pressure surges in fire water systems can be caused by a number of different factors, such as a valve closing or opening too quickly or a pump starting or shutting down suddenly. This momentum change can create a significant and potentially damaging pressure rise.

Most fire protection systems are designed to operate at a maximum working pressure of 12 barg (175 psi).  Pressure waves from water hammer or pressure surge can easily exceed 50 barg (740 psi), thus creating a very real threat of damage to piping and instrumentation.

The pictures below show two examples of catastrophic damage to piping and accessories caused by water surge/water hammer in fire protection systems.

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Topics: Fire Protection, Water hammer in fire protection systems

When firefighters get called in, the last thing they want to deal with is a clogged nozzle. The consequences may be tragic if a fire does occur and the fire sprinklers don’t turn on. These malfunctions are key indicators of a vulnerable fire protection system. And unfortunately, you may not become aware of the problem until it’s too late.

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Topics: Fire Protection, Basket strainers

In municipal fire pump applications, a water booster pump is often used to take water from a public service main or private use water system. The booster pump serves the purpose of increasing the existing water pressure to one suitable for the fire protection system. When designing or installing such a water booster pump, it is important to consider certain critical issues specific to water booster pumps.

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Topics: Fire Protection, water booster pump

This video presents the basic installation and the initial priming instructions for a BERMAD 7BM pre-action valve from the time you receive it, through to the installation and initial operation.

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Topics: Fire Protection, Pre-Action Valve

Deluge valves, together with the reservoir and pumps, are a critical part of many industrial fire protection systems and are often seen as “the heart of the system”. For this reason, it is essential that deluge valves function properly.

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Topics: Fire Protection, Deluge Valves

Water is the most efficient, cheapest and most readily available medium for extinguishing fires of a general nature. It is used by the Fire Service in one form or another in the majority of fire protection situations.

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Topics: Fire Protection

Even more than most industrial fittings, fire protection valves require the utmost in reliability throughout their service life. Every part of the valve must be designed with this in mind, including the valve body itself.

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Topics: Fire Protection

The American Petroleum Institute (API) standards are widely used safety and quality specifications for the Oil & Gas industry. While a number of their standards apply to industrial process valves, API 598 in particular governs valve inspection and testing, including testing for valves with a pressure rating of ANSI 1500 or higher.

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Topics: Fire Protection

From an engineering point of view, almost all valves leak by some measure. Valves may be said to be "bubble tight" or "zero leakage,” but in actuality most standards will let small amounts of water through. Every fire protection valve is subject to regulation by government, corporate, and/or other agencies. Valves must comply with safety standards as defined by established safety organizations such as the National Fire Protection Association (NFPA) or UL (Underwriters Laboratories).

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Topics: Fire Protection

A critical thing to know about any piece of equipment is its mean time between failures (MTBF). MTBF is the measure of time it takes between installing the equipment and when it can reasonably be expected to fail. In other words, it is a measure of reliability.

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Topics: Fire Protection, Deluge Valves

This animation presents the BERMAD preaction system, which is installed in the machine room as an integral component of the building’s fire protection system.
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Topics: Fire Protection, Deluge Valves

Fire presents a significant and ever-present danger in power plants of all types. Regardless of whether you are dealing with a fossil fuel, nuclear, or hydro plant, it is essential to have the right kind of fire protection in place. Depending on the area of the plant in question, fire protection systems for power plants may incorporate a number of tactics, including both passive (building features such as firewalls) and active (suppression) fire protection measures. 

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Topics: Fire Protection, Deluge Valves, Power Plants

Seawater is often used as a fire protection fluid, both in offshore applications and for on-shore sites located close to the ocean, due to its ready availability and low cost. However, seawater does present challenges due to its corrosive nature.  

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Topics: Fire Protection, Deluge Valves

Industrial fire protection valves are designed to be robust, but even the toughest valve body can crack or break when subjected to the pressure exerted upon it from inside by the expansion of water as it freezes. In environments where freezing temperatures are likely or even possible, it is important to protect your deluge valves from this possibility. A number of solutions exist to protect deluge valves from freezing. Let’s explore the pros and cons of each.

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Topics: Fire Protection, Deluge Valves

Deluge valves are a critical part of many industrial fire protection systems, and often referred to as ''the heart of the system'', as they take a major role in protecting life and property.

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Topics: Fire Protection, Deluge Valves

A fire event can cause untold damage to property. But sometimes the extinguishing water can do as much damage to protected items as the fire itself. This includes such places as computer rooms, film archives, museums and other moisture-sensitive areas. In such areas where a false alarm can be catastrophic and the deployment of water should be restricted to the fire area alone, rather than the whole building or room, it can make sense to use a preaction fire protection system.

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Topics: Fire Protection, Deluge Valves

There are many ways to put out a fire. Depending on the situation, a fire protection system can be designed to work with various fire suppression agents. Plain water is commonly used because it is easily available and effective in many cases. However, water is not always the best choice. Other options include inert gases, dry or wet chemical agents, and different types of fire suppressing foam. In this post, we will discuss foam applications.

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Topics: Fire Protection, Deluge Valves

One of the many choices to be made in designing an industrial fire protection system is to determine the deluge valves operation philosophy in the event of a fire - manually or automatically. The next designing step for an automatic operation is how the pilot sprinklers with fusible plugs will be activated, pneumatically or hydraulically. The advantage of an automatic operation is that it takes place immediately in response to triggering conditions such as heat or flame, without need for human interference or decision making. This enables fast system response even in remote or unmanned locations.

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Topics: Fire Protection, Deluge Valves

When selecting a deluge valve for your fire protection system, one of the most important things to consider is flow capacity with low head loss. In a fire protection situation, every second is critical. It is essential for water/foam to reach the fire as soon as possible after the detection system is activated . Even a short delay can be catastrophic, especially where flammable materials are present. A valve’s specific design will affect both the volume and speed with which fluid can pass through the unit. These in turn have a significant effect on system performance, and on the eventual outcome should a fire event occur.   

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Topics: Fire Protection

They say knowledge is power. And that is certainly true in fire protection. Knowing exactly what is going on in your fire protection system at any given time gives you vastly greater control. Reliable indication of the state of a valve can help diagnose problems, reduce system maintenance time, and improve performance and response time during a fire event.

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Topics: Fire Protection

The Sakhalin project is a two-phase, on- and off-shore oil and gas development on Sakhalin Island, Russia, located in the Okhotsk Sea. The project is owned and operated by Exxon Neftegas Limited (ENL). Combined, the Sakhalin phase 1 and 2 reserves contain an estimated 1,200 million barrels of crude oil. The project includes Russia’s first LNG plant, and is expected to contribute billions of dollars to the Russian economy. The first Sakhalin 1 well was drilled in 2003.

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Topics: Fire Protection, Offshore

The Tempa Rossa project is a newly developed oilfield situated in the Sauro Valley of the Basilicata region of southern Italy. The project is jointly owned by Total E&P Italia, Shell, and Mitsui E&P Italia. It was discovered in 1989 and brought into production in 2016. The oilfield is estimated to contain total reserves of 200 million barrels of high quality crude oil, with an anticipated peak daily output of 50,000 barrels. Natural gas, LPG, and sulfur are also being produced.

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Topics: Fire Protection, Deluge Valves

During a fire event, the need for efficiency in a fire protection system is absolute. Time is of the essence; even a slight delay in fire water delivery could spell the difference between a contained event and one that spirals out of control.  

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Topics: Fire Protection

A fire event is a crisis that calls for fast and forceful response from both human and mechanical defenses. Unlike a conventional water works or irrigation scenario where there is plenty of time to start a hydraulic system up slowly, a fire emergency calls for rapid and immediate engagement of the system.

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Topics: Fire Protection, Deluge Valves

Use of Liquefied Natural Gas (LNG) in the modern economy is growing strongly, with LNG production expected to reach 10% of the global crude production by 2020. Like all fuels, LNG is highly flammable, making your fire protection system a critical consideration when developing new LNG infrastructure.

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Topics: Fire Protection, Deluge Valves, LNG

Thankfully, tunnel fires don’t happen very often. But when they do, they can be catastrophic.

Fires can occur inside a tunnel, or be brought into the tunnel by a vehicle (for instance, due to friction, faulty electrical connections, or spontaneous combustion of cargo.) Tunnels are also sensitive to terrorist sabotage. Both roadway tunnels and train tunnels present the ideal conditions for a fire to get dangerously out of hand:

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Topics: Fire Protection

Fire protection systems play a critical role in preserving safety at oil and gas facilities. Deluge systems are classified as active fire protection measures and are commonly used in a wide range of offshore O&G installations, including floating production storage and offloading (FPSO) vessels, floating production systems (FPSs), and fixed platforms.

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Topics: Fire Protection, Offshore

For the first time BERMAD Fire Protection hosted a stand at this year’s ADIPEC. Our stand was located in the UK pavilion alongside many other participating UK companies. It was a fantastic opportunity to meet with many Regional End User’s, EPC’s, Integrators and suppliers (far too many to mention here).

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Topics: Fire Protection

Communicating about industrial fire protection equipment can be challenging, because so often the visual element is lacking. Often, concepts that are simple in theory can be very difficult to convey and learn when the only vehicles to communication are wordy descriptions and a few simple diagrams.

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Topics: Fire Protection

For 50 years, BERMAD has been the recognized pioneer and world-leading provider of high quality hydraulic control valves. Today, we’re announcing our new website and blog as a way for us to share high value content and information with you. 

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Topics: Fire Protection

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