'Emergency Leakage Arresting Device' is a new and innovative product, which was awarded patents in Canada and South Korea. It is a very effective and quick acting tool that can arrest gross accidental leakage from the pipe-ends within 10 seconds. The device can be installed onto the end of the pipe which has a collar.

This device can arrest gross accidental leakage within 10 seconds

It is a proven design and has been in use as a mandatory safety tool to handle accidental leakages at all Indian Pressurized Heavy Water Reactors. The simplicity in design, deployment and also in manufacturing makes this product extremely attractive. All the materials are locally available to manufacture this device.

The device does not require any complex or rigorous training as it can be deployed easily even by a semi-skilled worker. The application is shown below.

The 'Emergency Leakage Arresting Device' is a quick acting device that can arrest accidental leakages within 10 seconds. It is especially designed to arrest the leakage from the end of pipes that have a step or a collar at their ends.  Collar ended pipes are extensively used in Indian Pressurized Heavy  Water Reactors in the form of Coolant Channel End Fittings. This device is suitable to all those pipe structures that have a collared end. Specially designed yet very simple semi-cylindrical feature is used to mount the device on the collared end. The major benefit of the device is that the operator does not have to face the leaking water-stream head-on. The mounting is done sideways without facing the leaking water stream/jet and the leakage can be arresting conveniently by manual  rotation of the valve component.

PRESSURE AND FLOW RATE

The design has been tested and qualified up to a line-pressure of 13 Kgf/cm2 and flow rate of 2000 Litres per minute.  This device is suitable for minor leakages as well.

SALIENT FEATURES

Following are the noteworthy features from the manufacturing and application and  deployment perspective

1. Manufacturing

• The device is extremely simple in design and construction.
• It has no complex mechanisms built in it.
• Can be easily manufactured with generally available industrial machinery.
• No requirement of critical machining or materials.
• Components made in stainless steel and commercially available Ball Valve. No special material required.
• A single elastomer is used for sealing which is locally available.
• No elaborate test setup needed.
  

2. Application & Deployment

• The leakage can be arrested in less than 10 seconds.
• Operator does not have to face the leaking water-jet head-on.
• Device installation is sideways and convenient.
• A single person can conveniently install the device.
• Does not require complex training, it is simple to deploy.
• Inexpensive yet very effective.
• A semi-skilled personnel can easily install the device.

The 'Emergency Leakage Arresting Device' is simple in design, construction and deployment. It is a proven design and is successfully deployed at all Indian PHWRs as a necessary contingency measure. This device is extremely useful in handling emergency situation involving accidental leakages. The design simplicity makes it very effective and useable product for the industry.