Hamar Laser developed the very first steam-turbine laser alignment system for Westinghouse in 1972. Since then, our customers have been able to reduce their alignment-time allotment during an outage by at least 50%. In some cases, entire days have been shaved off an outage by using laser alignment. Our customers have benefitted even more by our laser's more accurate alignments, which have led to an increase in the efficiency rating of the turbines!

The L-705 and L-706 are the second generation of turbine alignment lasers and are smaller, faster and even easier to set up than their predecessor, the L-711. There is virtually no warm up period and their smaller size has eliminated one of the reference targets, which has reduced setup time by over 1 hour.

High Accuracy and Long Range

The L-705 Bore Alignment Laser has a range of 50 feet (15 M), and under good environmental conditions, is accurate to less than .001" (.025 mm) over the whole range (although it is capable of measuring down to .0001" (.0025 mm) in 10 feet). The L-706 Bore Alignment Laser is used for longer distance alignments from 50 to 110 feet (15 M to 33.5 M). It is accurate to +/-.001" (.025 mm) in 110 feet (33.5 M) and has finer angular adjustments than the L-705. Both lasers are concentric to their OD's to within .0005" (.013 mm).

Laser Virtually Eliminates Guesswork

Laser beams and electronic detectors, unlike tight wire, do not have sag or kinks, are not susceptible to wind, and are very repeatable from one technician/shift to the next. This means that the technician will no longer record what he "thinks" the reading is; he will record what the reading actually is.

Fast Alignment Can Save Days Off Outage

Sometimes days can be saved off an outage just from the fact that the L-705 laser system allows for other work to take place while the laser is being used. The tight wire, on the other hand, requires a lot of time to set up and settle down, and no other work can be performed while the wire is in use, as vibration will cause alignment errors. In addition, all the components (diaphragms, seals, etc) must be installed to do the alignment; otherwise the wire will have to be repeatedly broken down and set up again.

With L-705/706 Turbine Alignment System, components can be taken in and out of the shell while the laser is being used. Furthermore, the laser provides live data, which means that while the components are being moved, a large digital display shows a live display of the misalignment.

Laser Pays for Itself in Days

With higher accuracy and faster alignments, a steam turbine aligned with our L-705 will require less energy to generate a kilowatt of electricity and will come on line more quickly than when using other alignment methods. This reduction in cost is pure profit and can pay for the system in a matter of days (see Case Histories for a few examples).

HOW IT WORKS
Turbine Alignment

FEATURES

• Set up in 30 minutes or less.
• +/- .001" (.025 mm) accuracy in 110' (33.5 M).
• Large digital display eliminates need for long cables.
• Simple, rugged fixturing.
• Laser and sweep unit use same fixture to speed setup.
• A-511 Wand Bore Target speeds data taking.
• Portable, battery operated.
• Dynamic display of component misalignment.