Draft Details

Table of Contents

Standard for wind turbine tower elevators (New...
ASME A17.8-2026/CSA B44.8:26
Legal Notice for Draft Standards
ASME Foreword
ASME Preface
CSA Preface
Summary of Changes
+ 1 General
+ 1.1 Scope
1.1.1 Effective date
+ 1.2 Purpose and exceptions
1.2.1 Purpose
+ 1.2.2 Exceptions to ASME A17.8/CSA B44.8
1.2.2.1
1.2.2.2
1.3 Definitions
1.4 References
+ 2 Wind turbine tower elevators
+ 2.1 Construction of hoistways
2.1.1 Hoistway enclosure not required
2.1.2 Enclosures required at landings
+ 2.1.3 Floor over travel path not required
2.1.3.1
2.1.3.2
+ 2.2 Pits
2.2.1
+ 2.3 Location and enclosing of counterweights
2.3.1 Counterweight runways
2.3.2 Access to enclosed counterweights and rop...
+ 2.4 Vertical clearances for cars and counterwei...
2.4.1 Top car clearance (maintenance/inspection...
2.4.2 Top car clearance (maintenance/inspection...
2.4.3 Top counterweight clearance
+ 2.5 Horizontal car and counterweight clearances...
2.5.1 Between car and landing platforms
2.5.2 Between car and any stationary object
2.5.3 Between car and counterweight and counter...
2.5.4 Measurement of clearances
+ 2.6 Protection of spaces below the travel path
2.6.1 Floor strength
+ 2.7 Machinery spaces and control spaces
+ 2.7.1 Equipment location
2.7.1.1 Motor controller location
2.7.1.2 Temperature and humidity
+ 2.8 Equipment in the travel path, machinery spa...
2.8.1 Electrical equipment and wiring
2.8
+ 2.9 Machinery and sheave beams, supports, and f...
+ 2.9.1 Securing of machinery beams and type of s...
2.9.1.1
2.9.1.2
2.9.1.3
2.9.1.4
2.9.1.5
2.9.2 Loads on overhead beams and supports
+ 2.9.3 Allowable stresses and deflections for ma...
2.9.3.1
2.9.3.2
+ 2.10 Guarding of equipment and standard railing...
2.10.1 Guarding of equipment
+ 2.10.2 Standard railing
2.10.2.1
2.10.2.2
2.10.2.3
2.10.2.4
2.10.3 Landing platform protection
+ 2.11 Protection of landing platform openings
2.11.1 Landing platform doors or gates
2.11.2 Door or gate closers
2.11.3 Horizontal platform inside enclosure
2.11.4 Platform lighting
+ 2.11.5 Landing platform enclosures
2.11.5.1
2.11.5.2
2.11.5.3
2.11.5.4
2.11.5.5
2.11.5.6
2.11.5.7
+ 2.12 Landing platform door or gate locking devi...
2.12.1 Landing platform door or gate locking de...
2.12.2 Where required (for automatic call opera...
+ 2.12.3 Listing/certification door locking devic...
2.12.3.1
2.12.3.2
2.12.3.3
2.12.3.4
+ 2.12.4 General design requirements
2.12.4.1
2.12.4.2
2.12.4.3
2.12.4.4
2.12.4.5
2.12.4.6
2.12.4.7
2.12.4.8
+ 2.12.5 Listing/certification door locking devic...
2.12.5.1 Type tests
2.12.5.2 Listing/certification
2.12.5.3 Identification marking
2.13 Power operation of landing platform doors ...
+ 2.14 Car enclosures, car doors and gates, and c...
2.14.1 Car enclosure
2.14.2 Car height
2.14.3 Vision panels
2.14.4 Enclosure panels
2.14.5 Strength of car top
2.14.6 Top of car railing
2.14.7 Car illumination
+ 2.14.8 Auxiliary lighting
2.14.8.1
2.14.8.2
2.14.8.3
2.14.8.4
+ 2.14.9 Car emergency exit
2.14.9.1
2.14.9.2
2.14.9.3
2.14.10 Car doors and gates
+ 2.14.11 Car door and gate electric contacts
2.14.11.1
2.14.11.2
2.14.12 Clear openings
2.14.13 Sectioning
2.14.14 Ventilation
+ 2.15 Car frames and platforms
2.15.1 Car frames and floors
2.15.2 Use of cast iron
2.15.3 Number of compartments
2.15.4 Guiding means
2.15.5 Strength of guiding means
2.15.6 Car frame
2.15.7 Guiding members
2.15.8 Kickboard
2.15.9 Obstruction-detection devices
+ 2.15.10 Warning devices
2.15.10.1
2.15.10.2
2.15.10.3
2.15.11 Ladder-guided platforms
+ 2.16 Capacity and loading
2.16.1 Capacity and data plates
+ 2.16.2 Information required on plates
2.16.2.1 Capacity plates
2.16.2.2 Data plates
2.16.3 Limitation of load, speed, and platform ...
2.16.4 Overload detection means
2.16.5 Speed-limiting device
+ 2.17 Car and counterweight safeties
+ 2.17.1 Wire rope gripping safety
2.17.1.1
2.17.1.2
2.17.1.3
2.17.1.4
2.17.1.5
2.17.1.6
2.17.1.7
2.17.1.8
+ 2.17.2 Rack-and-pinion safety
2.17.2.1
2.17.2.2
2.17.2.3
2.17.3 Safety marking plates
2.17.4 Opening of driving-machine motor and bra...
2.17.5 Application of safety
2.18 Reserved for future use
2.19 Reserved for future use
+ 2.20 Suspension means and their connections
+ 2.20.1 Suspension means for counterweighted tra...
2.20.1.1
2.20.1.2
2.20.1.3
2.20.1.4
2.20.1.5
+ 2.20.2 Suspension means for uncounterweighted t...
2.20.2.1
2.20.2.2
2.20.2.3
2.20.2.4
2.20.2.5
2.20.2.6
2.20.2.7
2.20.2.8
2.20.2.9
2.20.2.10
2.20.2.11
2.20.2.12
2.20.2.13
2.20.3
2.20.4 Replacement of suspension means
+ 2.21 Counterweights
2.21.1 Counterweight guides
+ 2.21.2 Types of counterweight construction
2.21.2.1
2.21.2.2
2.21.2.3
2.21.2.4
+ 2.22 Buffers, bumpers, and retardations
2.22.1 Bumpers
2.22.2 Spring buffers
2.22.3 Retardations
+ 2.23 Car and counterweight guidance systems, su...
+ 2.23.1 Wire rope guidance system for uncounterw...
2.23.1.1
2.23.1.2
2.23.1.3
2.23.1.4
2.23.1.5
2.23.1.6
2.23.1.7
2.23.1.8
2.23.1.9
2.23.1.10
2.23.1.11
2.23.1.12
2.23.1.13
+ 2.23.2 Ladder guidance systems
2.23.2.1
2.23.2.2
2.23.2.3
2.23.2.4
2.23.2.5
2.23.2.6
2.23.2.7
2.23.2.8
2.23.2.9
+ 2.24 Driving machines, sheaves, and brakes
+ 2.24.1 Rack-and-pinion driving machines
2.24.1.1
2.24.1.2
2.24.1.3
2.24.1.4
2.24.1.5
2.24.1.6
2.24.1.7
2.24.1.8
2.24.1.9
+ 2.24.2 Traction driving machines, sheave and br...
2.24.2.1
2.24.2.2
2.24.2.3
2.24.2.4
2.24.2.5
2.24.2.6
2.24.2.7
+ 2.24.3 Material and grooving for sheaves
2.24.3.1
2.24.4 Factor of safety for driving machines an...
2.24.5 Bolts transmitting torque and set screws...
2.24.6 Friction-gearing or clutch mechanism
2.24.7 Use of cast iron in gears
+ 2.24.8 Braking system of driving machines
2.24.8.1
2.24.8.2
2.24.8.3
2.24.8.4
2.24.8.5
2.24.8.6
2.24.8.7
2.24.9 Means for manual release of driving mach...
+ 2.25 Terminal stopping devices
+ 2.25.1 Final terminal stopping
2.25.1.1
2.25.1.2
2.25.1.3
+ 2.25.2 Normal terminal stopping
2.25.2.1
2.25.2.2
2.25.2.3
2.25.2.4
2.25.2.5
2.25.3 Slack rope detection
+ 2.26 Operating devices and control equipment
+ 2.26.1 Operation and operating devices
2.26.1.1 Types of operating devices
2.26.1.2 Types of operation
2.26.1.3 Wireless operating devices
2.26.1.4 All operating devices
+ 2.26.2 Electrical protective devices
2.26.2.1 Emergency stop switch
2.26.2.2 Stop switch on top of car
2.26.2.3 Car safety mechanism switch
2.26.2.4 Final terminal stopping devices
2.26.2.5 Car door and gate electric contacts
2.26.2.6 Ladder-guided access cover switch
2.26.2.7 Trapped key electric contacts
2.26.2.8 Platform door or gate switch
2.26.3 Contactors and relays for use in critica...
+ 2.26.4 Electrical equipment and wiring
2.26.4.1
2.26.4.1.1
2.26.4.1.2
2.26.4.2
2.26.4.3
2.26.4.4
2.26.5 Phase protection of motors
2.26.6 Installation of capacitors or other devi...
+ 2.26.7 Control and operating circuits
2.26.7.1
2.26.7.2
2.26.7.3
2.26.7.4
2.26.7.5
2.26.7.6
2.26.7.7
+ 2.26.8 Release and application of driving-machi...
2.26.8.1
2.26.8.2
2.26.8.3
2.27 Emergency operation and signaling devices
2.28 Layout drawings
+ 2.29 Welding
2.29.1 Qualification of welders
2.29.2 Welding steel
2.29.3 Welding metals other than steel
+ 2.30 Engineering tests, type tests, and certifi...
+ 2.30.1 General requirements for tests and certi...
2.30.1.1 General
2.30.1.2 Application for certification
2.30.1.2.1
2.30.1.2.2
2.30.1.3 Certification and test records
2.30.1.3.1
2.30.1.3.2
2.30.1.3.3
2.30.1.3.4
2.30.1.4 Changes to listed/certified components...
2.30.1.4.1
2.30.1.4.2
2.30.1.5 Testing instruments
+ 2.30.2 Type tests of interlocks, combination me...
2.30.2.1 General
2.30.2.2 Examination before test
+ 2.30.3 General requirements
2.30.3.1 Connections for and test of electrical...
2.30.3.2 Retesting of electric contacts previou...
2.30.3.3 Tests of platform enclosure gate combi...
+ 2.30.4 Required tests and procedure
2.30.4.1 Endurance test
2.30.4.2 Current interruption test
2.30.4.3 Test without lubricant
2.30.4.4 Test in moist atmosphere
2.30.4.5 Misalignment test
2.30.4.6 Insulation test
2.30.4.7 Static test
2.30.4.8 Examination of electrical spacings
2.30.4.9 Examination of operation
2.30.4.10 Testing of bridging means
+ 2.31 Code data plate
2.31.1 Required information
2.31.2 Location
2.31.3 Material and construction
+ 3 Maintenance, repair, replacement, testing, an...
+ 3.1 Maintenance
+ 3.1.1 General maintenance requirements
3.1.1.1 On-site documentation
3.1.1.2
3.1.2 Maintenance personnel
+ 3.1.3 Maintenance records
3.1.3.1 On-site maintenance records
3.1.3.1.1 Maintenance control program records
3.1.3.1.2 Repair and replacement records
3.1.3.1.3 Permanent record
3.1.3.2 Call backs (trouble calls)
3.1.4 Code data plate
+ 3.1.5 General maintenance methods and procedure...
3.1.5.1 Making safety devices inoperative or in...
3.1.5.2 Lubrication
3.1.5.3 Controllers and wiring
3.1.5.3.1
3.1.5.3.2
3.1.5.3.3
3.1.5.3.4
3.1.5.3.5
3.1.5.4 Painting
3.1.5.5 Fire extinguishers
3.1.5.6 Workmanship
3.1.5.7 Signs and data plates
3.1.5.8 Car interior cleanliness
+ 3.1.6 Periodic tests
3.1.6.1 Witnessing tests
3.1.6.2 Periodic test record
3.1.6.3
+ 3.2 General repair requirements
3.2.1 Applicable codes
3.2.2 Welding and design
3.2.3 Repair of suspension, guide, and safety r...
3.2.4 Repair of safety
+ 3.3 General replacement requirements
3.3.1 Replacement parts
+ 3.3.2 Replacement suspension, guide, and safety...
3.3.2.1 Suspension, guide, or safety ropes
3.3.2.2
3.3.2.3
3.3.3 Replacement of car or counterweight safet...
3.3.4 Replacement of driving machine
3.3.5 Replacement of controller
+ 3.3.6 Listed/certified devices
3.3.6.1
3.3.6.2
+ 3.4 Maintenance and testing of wind turbine tow...
+ 3.4.1 Suspension means
3.4.1.1
3.4.1.2
+ 3.4.2 Wire rope gripping safeties
3.4.2.1
+ 3.4.3 Brakes
3.4.3.1
3.4.3.2
3.4.4 Car and counterweight safeties
+ 3.4.5 Tests without load via alternative test m...
3.4.5.1 Where permitted
3.4.5.2 Alternative test method and tools
3.4.5.2.1
3.4.5.2.2
3.4.5.3 Alternative test method procedure
3.4.5.4 Alternative test method report
+ 3.5 Alterations
3.5.1 Applicability of alteration requirements
3.5.2 Items not covered in 3.5
3.5.3 Testing
3.5.4 Welding
3.5.5 Design
3.5.6 Temporary wiring
3.5.7 Repairs and replacements
3.5.8 Code data plate
3.5.9 Location and guarding of counterweights
3.5.10 Vertical car and counterweights clearanc...
3.5.11 Horizontal car and counterweight clearan...
3.5.12 Machinery spaces, and control spaces
3.5.13 Machinery and shave beams, and supports
3.5.14 Platform door locking devices
+ 3.5.15 Car enclosures, car doors and gates, and...
3.5.15.1
3.5.15.2
+ 3.5.16 Car frames and platforms
3.5.16.1 Alterations to car frames and platform...
+ 3.5.17 Change in rated speed
3.5.17.1 Increase in rated speed
3.5.17.2 Decrease in rates speed
+ 3.5.18 Driving machines and sheaves
3.5.18.1
3.5.18.2
3.5.18.3
+ 3.5.19 Controllers
3.5.19.1
3.5.19.2
+ 3.5.20 Car and counterweight safeties
3.5.20.1
3.5.20.2
+ 3.6 Acceptance inspections and tests
+ 3.6.1 General requirements for acceptance inspe...
3.6.1.1 Persons authorized to make acceptance i...
3.6.1.2
3.6.1.3
3.6.1.4 Acceptance test tags
3.6.1.5 Acceptance test records
3.6.1.6 Accreditation of certifying organizatio...
3.6.1.7 Applicability of inspection and test re...
3.6.1.8 Making safety devices inoperative or in...
3.6.1.9 Unique or product-specific procedures o...
3.6.1.10 Maintenance control program
+ 3.6.2 Acceptance inspections and tests
3.6.2.1 Inspection and tests required
3.6.2.2 Inspection requirements for new install...
3.6.2.2.1 Inside car
3.6.2.2.2 Outside car
3.6.2.2.3 Safeties
3.6.2.2.4
3.6.2.2.5
+ 3.6.3 Inspection and test requirements for alte...
3.6.3.1
3.6.3.2
3.6.3.2.1
3.6.3.2.2
3.6.3.2.3
+ 3.7 Periodic inspections and witnessing of test...
+ 3.7.1 General requirements for periodic inspect...
3.7.1.1 Persons authorized to make periodic ins...
3.7.1.1.1 Periodic inspections
3.7.1.1.2 Periodic tests
3.7.1.2 Applicability of inspection requirement...
3.7.1.3 Periodic inspection and test frequency
3.7.1.4 Installation placed out of service
3.7.1.5 Making safety devices ineffective
3.7.1.6 Unique or product-specific procedures o...
3.7.1.7 Maintenance control program
+ 3.7.2 Periodic inspection requirements
3.7.2.1 Inside car
3.7.2.2 Outside car
+ 3.7.3 Periodic test requirements — Category 1
3.7.3.1 Safeties
3.7.3.2
+ 3.7.4 Periodic test requirements — Category 5
3.7.4.1 Driving-machine brake
3.7.4.2 Braking system, traction, and traction ...
3.7.4.3 Safeties
+ 3.7.5 Category 5 tests without load via alterna...
3.7.5.1 Where permitted
3.7.5.2 Alternative test method and tools
3.7.5.3 Alternative test method procedure
3.7.5.4 Alternative test method report
Annex A (informative)
+ Annex B (informative)
Table B-1
+ Annex C (informative)
Acceptance tests

Standard for wind turbine tower elevators (New Edition)

Designation:ASME A17.8-2026/CSA B44.8:26

Source:CSA

Contact:[email protected]

Review start date:Aug 10, 2026

Review end date:Oct 9, 2026

Categories:Construction and Engineering

Contact email:kristina.veri(at)csagroup.org

Read Draft

Alert a colleague

Draft Scope/Description:

1.1 Scope

ASME A17.8/CSA B44.8 applies to elevators permanently installed in a wind turbine tower to provide vertical transportation of authorized personnel and their tools and equipment only.

Such elevators are typically subjected to extreme temperatures, humidity variations, and substantial horizontal motions where, by reason of their limited use and the types of construction of the structures served, full compliance with ASME A17.1/CSA B44 Part 2 is not practicable or necessary.

You may comment on any section of this document by clicking the “Submit Comment” link at the bottom of the relevant section.