SAVE MONEY REDESIGNING THE BOLTED JOINT

Using our methods we can reduce the cost of bolted joints 25%. With the redesign of the joint we improve the use of the bolting elements reducing their numbers in 25%. Depending on the elements initially used the savings tend also to be 25% of the cost.

REDUCE YOUR TIGHTENING TIME

You obtain a saving of 2000€ in the tightening of a blade-hub joint in an onshore Wind turbine. Using our methods the tightening time is reduced from 16 hours to 8 hours. We improve the tightening strategy and we use read load measurement to go directly to the target load. The savings in an offshore turbine will be much higher.

OUR TARGET IS

Savings of 38.500€ in a blade-hub joint of a Wind turbine, by reducing maintenance costs and no loss in earning potential. In our experience the most important point for gains in maintenance is a more accurate initial tightening. Analyzing your joint we will search for the most balanced solution with the goal to reach "zero maintenance".

BIG EARNINGS BY FATIGUE DESIGNING

Design for fatigue includes improvement of detail category and the best tightening method definition for each specific joint. Savings are produced because there are:

- no cost of replacement of failed parts, in bolts and specially in more expensive damageable machine parts.

- earnings because of no income loss for downtimes , by improving the efficiency of the machines, e.g. vibration reduction.

- no problems of security or environment , e.g pollutant fluidleakages.

A GAIN OF THOUSAND OF DOLLARS MINIMIZING THE DOWNTIME OF LNG FACILITIES

Design of the bolted joint and its tightening takes into account working temperatures, thermal shocks in the start-up and fluid hammer and permits you to obtain gains and reach high standards in safety.

SUBSTANTIAL SAVINGS IN THE OPEX, BECAUSE YOU AVOID SHUTDOWNS AND LEAKAGES

A correct tightening strategy and the knowledge of accurate real load during the assembly, permit us to avoid leakages in the installations. You obtain OPEX reductions and therefore your installation will be more reliable and safer.

GAINS OF TENS OF THOUSANDS OF DOLLARS IN THE OFFSHORE FACILITIES ASSEMBLY

A correct design of the tightening strategy (time saving strategy) and the training of the assembly teams as it is cheaper(in onshore training facilities) allow us to propose cost reductions in the assembly cost.

HOW TO INSURE THE SUCCESSFUL START-UP OF YOUR PLANT

Are you sure that tightening procedures are respected in field operations? How many discussions have you had to elucidate the responsibility of a failed joint?
We can guarantee that tightening procedure is truly respected in field operations as the device permits only the mandatory tightening procedure. A well designed and in field respected tightening allows you to avoid retightening and leakages in the start-up.

SAVINGS IN INSPECTIONS

$100,000 saving per inspection in the attachment of the vertical fin to fuselage in aerospace. Conventional inspection requires disassembly, manual inspection and reassembly with associated labor and aircraft downtime costs. The FAA approved inspection alternative eliminates almost all of these costs by allowing frequent in situ verification of loads through rapid manual inspection
and/or in-flight monitoring.

LEADTIME REDUCTIONS INCREASING YOUR OEE AND AVAILABILITY

Production throughput improvement of 2% per aircraft. Attachment of the wing to fuselage is the current bottleneck in the final assembly. The joint is currently assembled with conventional low speed tools and requires a retorquing operation after assembly, friction variations and sealant ooze results in low confidence in joint integrity. The proposed solution will allow assembly with high speed impact wrenches, the elimination of retorquing and the ability to verify final joint loads.