Introduction

The hydranut system is a tensioning system that is a direct retrofit for any existing tensioning system
currently used on the Reactor Vessel The system itself is of a modular design tensioner and integrated
mechanical lock ring to tetain load generated through the use of hydraulice.
Hydranuts allow for 100% tensioning of all studs simultaneously, but also offer the flexibility of tensioning
individual studs without compromising previously tensioned ones

Hydranut System Components

operation

Applications

Typical hydranut applications

Benefits

Absolutely achieves “ALARA”
– Reduces # of people involved
– Fastest possible way to close joint
– Keeps operators away from highest dose areas in short time

Maximizes “joint integrity” by applying 100% load simultaneously to all stud / bolts
Reduces risk of injury by avoiding the use of heavy equipment and dangerous processes
Predictable timing for activity allows for accurate “critical path” planning
Reduced risk of “galling” reduces cost of stocking, and expediting materials.