LNG Emergency Release Couplings - KLAW LNG

LNG Emergency Release Couplings

LNG Emergency Release Coupling

The KLAW Emergency Release Coupling (ERC) is the safety point within the LNG hose transfer system and is normally positioned between the manifold of the receiving vessel and the hose. The ERC operates at cryogenic temperatures.


Shutting off transfer flow in an emergency

In an emergency, the ERC separates and the valves close. This shuts off the downstream and upstream LNG flow on each side of the separation.

Instant closure

The instant closure of the KLAW Flip-Flap valve mechanism within the ERC delivers the crucial advantage of minimal spillage.

Controlled closure

The KLAW ERC range offers controlled closure options. This delivers additional control over flow shut down.

Compact and lightweight

Compared to other options, the KLAW ERC is very compact and lightweight and given the challenging conditions of the offshore environment, this is a valuable feature. Installation, maintenance, handling of the ERC on activation and reinstatement along with operation and management in confined spaces is much easier.

The KLAW STS LNG transfer system is a mobile system that can be transferred from and to any vessel if required.

Efficient flow transfer

The KLAW Flip-Flap design provides minimal flow restriction and therefore low pressure drops.

KLAW ERC sizes

KLAW LNG offers ERC systems in all sizes up to 10” NB. Larger sizes can be provided on application.

The KLAW ERC is designed to meet the demands of cryogenic to ambient temperature cycles

The operating temperature of the LNG transfer system is cryogenic. When not commissioned, the system returns to an ambient temperature which in itself can vary depending on the environment in which the system is operating. KLAW LNG transfer systems are designed to sustain these repeated extreme temperature cycles.

KLAW ERC Collar Release Mechanism

The collar release mechanism of the KLAW ERC offers two distinct advantages for LNG safety transfer applications.

The first is that the KLAW Collar Release Mechanism does not rely on axial tensile load in the hose line or any other part of the transfer system such as loading systems or other connections such as flange joints.

The second is control. The Collar Release Mechanism is hydraulically controlled from the HPU. This provides numerous control options and solutions to all foreseeable emergencies.

Resistance to vibration and pressure spikes

Because activation is dependent on the Collar Release Mechanism and not on tensile loads being exerted via the connection of the two halves of the coupling, the ERC is not vulnerable to vibration, pressure spikes or other hose handling issues.