Motion limits
Hoist, cross-travel and long-travel limits should stop motion before the crane reaches unsafe mechanical contact.
Check: type, make, covered motion, reset behavior, adjustment and FAT/SAT test.
For buyers, maintenance engineers and safety teams
EOT Crane Safety Devices and Acceptance Guide
Do not let "standard safety devices included" pass as a specification. Define what protects each crane motion, how it stops, how it resets, how it is tested and what evidence is handed over.
Quick answer
A complete EOT crane safety scope should name the devices, motions protected, trip behavior, reset method and test evidence. At minimum, clarify hoist limits, travel limits, overload limiter, emergency stop, isolator, warning devices, buffers/end stops, anti-collision if relevant, FAT/SAT checks, load-test responsibility and handover documents.
Safety layers
Think in layers, not individual accessories
A crane safety device is useful only when it is selected, wired, tested and maintained as part of the complete crane motion. The buyer’s job is to force the supplier to make the safety logic visible before PO release.
Load protection
Overload devices must be identified, calibrated and tested using a defined method.
Check: sensor type, trip setting, display, certificate, bypass protection and site verification.
End-travel protection
Buffers, end stops, travel limits and anti-collision logic should work together, especially in shared bays.
Check: speed, energy, mounting, stop sequence, buffer rating and collision scenario.
Acceptance route
Where safety must be controlled in the buying process
Name required devices and ask for make, type, motion covered, test method and exclusions.
Reject one-line safety claims until every bidder states the same safety scope.
Verify device list, wiring, drawings, certificates and vendor test evidence before dispatch.
Test motions, emergency stops, limits, overload method, buffers and handover records at site.
Safety-device comparison
What buyers should ask suppliers to specify
| Device or check | Ask for | Acceptance evidence | Common gap |
|---|---|---|---|
| Hoist upper/lower limits | Type, make, normal/final limit logic, lower-limit/drum-wrap basis and reset method. | Functional limit test at agreed approach speed. | Upper limit included, lower limit not discussed. |
| Travel limits | Cross-travel and long-travel limit philosophy, end-stop relation and stopping behavior. | Motion stops before unsafe end impact. | Physical end stop used as normal stopping method. |
| Overload limiter | Sensor type, trip setting, display/indication, calibration and bypass control. | Calibration certificate and site verification method. | No trip value, certificate or test method. |
| Emergency stop | Locations, reset behavior, control circuit relation and operator stations covered. | E-stop test from pendant/radio/panel as applicable. | Emergency stop present but not tested at SAT. |
| Buffers and end stops | Buffer type, energy basis, approach speed, mounting and relation to travel limits. | Visual check, mounting check and scope confirmation. | Buffers listed without energy or speed basis. |
| Anti-collision | Need assessment for shared bay, multiple cranes, transfer areas and blind travel zones. | Slowdown/stop test where included. | Multiple-crane bay quoted without collision logic. |
| Load test and handover | Test load, instruments, witness points, certificates, manuals and punch-list closure. | Signed FAT/SAT, load-test record and document register. | Payment released before documents close. |
Red flags
Do not accept these safety-scope shortcuts
"Standard safety devices included"Ask for a device schedule with make, type, covered motion, trip behavior and test method.
Safety devices left for site decisionCritical safety logic should be agreed before PO, not invented during commissioning.
No calibration or certificate planOverload and load-test evidence should be defined with acceptance documents.
Bypass not controlledAsk how limits and overload devices are protected from being bypassed and left unsafe.
Buffers treated as decorative itemsBuffer type, energy basis, stroke, speed and mounting must match the travel system.
No FAT/SAT test sheetWithout a test sheet, acceptance becomes subjective and safety gaps are easy to miss.
Related safety resources
Use these pages to complete the safety review
Safety boundary: This guide supports buyer-side scope definition and maintenance planning. Final safety design, statutory compliance, inspection, testing, calibration, load testing and return-to-service decisions must be handled by competent personnel using vendor documents, site procedures and applicable standards.
Next action
Turn safety claims into testable requirements
Before comparing crane prices, ask every bidder to complete the same safety-device and acceptance schedule.