PIPE MODULAR LIFT SYSTEM
ancient Greeks invented the first construction crane around the
year 900 BC, a certain amount of risk has always been inherent
in the use of a hook to lift heavy objects. PSC has created a
revolutionary game changer with its patent-pending Pipe Modular
Lift System (PMLS), which eliminates the hazards of suspended
loads at nuclear plants by employing a platform that mechanically
raises and lowers heavy cargo via a system of structural elements.
The PMLS has numerous advantages over traditional crane and gantry
Power & Versatility
Given its freestanding modular design, the PMLS's capacity and
footprint can be configured based upon the nuclear plant's requirements.
Lift speed: 20 inches per minute (twice that of strand jack systems)!
• Lifting capacities: 400, 800 and 1,200 tons
• Vertical travel distance up to and exceeding 50 feet (depending
on the application) in 10-foot increments
• Clear span openings configurable to 50 feet or larger
• Square, rectangular and round layouts
• 5 percent side loading
Transport & Rapid Assembly
• Ships in 12 standard ground transportation trailers versus
25 to 30 trailers needed for cranes or gantries
• Requires no wide load or heavy load permits
• Assembles in five shifts, or fewer, compared to three to
four weeks for comparable systems
Unlike traditional lift systems, there are no cable drums or strands
that can fail or hydraulics that can leak.
Wind load: 50 miles per hour (operating) and 120 miles per hour
(high winds) enables work to
safely continue despite inclement weather
• Computerized control: sets vertical travel distance based
on user input
• Power failsafe: load remains in place on the secured platform
until power is restored
• The self-locking PMLS provides perfectly synchronized lifting
and positive mechanical engagement of the
cargo and the platform 100 percent of the
• Its performance is not affected by unbalanced loads
Load Handling Evolutions & Reduces Risk
The PMLS platform was developed to accept any mobile material
handling equipment, such as PSC's SPMT, with the cargo in place.
This approach eliminates the need for additional equipment and
lifts to transfer the component from one system to another. Once
the PMLS reaches the desired elevation, the mobile material handling
equipment transfers the cargo from the platform to the adjoining
structure for delivery. PSC used the PMLS to help keep a critical
path air chiller replacement project on schedule for a Kansas
PMLS complies with the applicable sections of the following standards:
• AISC Manual of Steel Construction, 9th Ed. and 13th Ed.
• ASCE 7-10, Minimum Design Loads for Buildings and Other
• AWS D1.1, Structural Welding Code
• ASME NQA-1-2004, Subpart 2.15, Quality Assurance Requirements
for Nuclear Facility Applications
• ASME B30, Various Sections
• NUREG 0612, Control of Heavy Loads at Nuclear Plants
• 29 CFR 1926, OSHA Construction Industry Regulations
• ANSI/SAI A92.9, Mast-Climbing Work Platforms
• ASME A120.1, Safety Requirements for Powered Platforms
and Traveling Ladders and Gantries for Building
is proudly engineered, manufactured and load tested in the U.S.A.
Demonstrations of its capabilities are available via video or
at PSC's facility in Russellville, Ark. To schedule a live demonstration
of this groundbreaking lift system, please call 1.800.912.9181.
Product Data Sheet