A self locking plug provides a safe and secure seal for the various borescope inspection ports placed around the turbine engine case for borescope inspection of the engine
JPB système can completely customize and design its borescope plugs to fit your specific engine needs.
Retrofit's Solutions are possible. (i.e.: for the CFM56-5B and CFM56-7 product).
Plugs are easily adapted to areas where it is complicated to use lock wire and are available for any stage of the engine.
Sine Test 3Hz at 4000Hz
Level 1G at 100G cc
Sweep : 2 octaves/min
On the right: a standard plug (without JPB système's Technology) torqued by hand.
On the left: a JPB système's plug NOT torqued, with locking tabs just engaged (Worst Condition).
Resonance fequency of the spring
This is the most critical frequency. We run the shaking table at 525 Hz with acceleration 50G cc.
Note: The resonance phenomenon is visible with the stroboscope light.
Result: More that 3 million of cycles passed with success.
The plug will automatically lock on the second turn if the first one failed
Contact us for more information