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eLibrary > ASME A17.8/CSA B44.8 - 2021 Standard for Wind Turbine Tower Elevators >

ASME A17.8/CSA B44.8 - 2021 Standard for Wind Turbine Tower Elevators, 2021

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ASME A17.8/CSA B44.8 - 2021 Standard for Wind Turbine Tower Elevators, 2021

Contents
ASME A17 Elevator and Escalator Standards Committee
CSA B44 Technical Committee on the Elevator Safety Code
ASME A17.8/CSA B44.8 Joint Committee on Wind Turbine Tower Elevators
Foreword
Preface
1 General [Go to Page]
1.1 Scope [Go to Page]
1.1.1 Effective date
1.2 Purpose and exceptions [Go to Page]
1.2.1 Purpose
1.2.2 Exceptions to ASME A17.8/CSA B44.8
1.3 Definitions
1.4 References
2 Wind turbine tower elevators [Go to Page]
2.1 Construction of hoistways [Go to Page]
2.1.1 Hoistway enclosure not required
2.1.2 Enclosures required at landings
2.1.3 Floor over travel path not required
2.2 Pits [Go to Page]
2.2.1 Pits shall not be provided.
2.3 Location and enclosing of counterweights [Go to Page]
2.3.1 Counterweight runways
2.3.2 Access to enclosed counterweights and ropes
2.4 Vertical clearances for cars and counterweights [Go to Page]
2.4.1 Top car clearance (maintenance/inspection access required)
2.4.2 Top car clearance (maintenance/inspection access not required)
2.4.3 Top counterweight clearance
2.5 Horizontal car and counterweight clearances [Go to Page]
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 counterweight guard
2.5.4 Measurement of clearances
2.6 Protection of spaces below the travel path
2.7 Machinery spaces and control spaces [Go to Page]
2.7.1 Equipment location
2.8 Equipment in the travel path, machinery space, and control spaces [Go to Page]
2.8.1 Electrical equipment and wiring
2.9 Machinery and sheave beams, supports, and foundations [Go to Page]
2.9.1 Securing of machinery beams and type of supports
2.9.2 Loads on overhead beams and supports
2.9.3 Allowable stresses and deflections for machinery and sheave beams, their supports, and any support members that transmit load to the turbine tower walls
2.10 Guarding of equipment and standard railing [Go to Page]
2.10.1 Guarding of equipment
2.10.2 Standard railing
2.10.3 Landing platform protection
2.11 Protection of landing platform openings [Go to Page]
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
2.12 Landing platform door and gate locking devices, electric contacts, and trapped key systems [Go to Page]
2.12.1 Landing platform door and gate locking devices
2.12.2 Where required (for automatic call operation)
2.12.3 Listing/certification door locking devices and door or gate electric contacts and landing platform enclosure gate combination mechanical locks and electric contacts
2.12.4 General design requirements
2.12.5 Listing/certification door locking devices and door or gate electric contacts
2.13 Power operation of landing platform doors and car doors or gates
2.14 Car enclosures, car doors and gates, and car illumination [Go to Page]
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 Emergency lighting
2.14.9 Car emergency exit
2.14.10 Car doors and gates
2.14.11 Car door and gate electric contacts
2.14.12 Clear openings
2.14.13 Sectioning
2.14.14 Ventilation
2.15 Car frames and platforms [Go to Page]
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
2.15.11 Ladder-guided platforms
2.16 Capacity and loading [Go to Page]
2.16.1 Capacity and data plates
2.16.2 Information required on plates
2.16.3 Limitation of load, speed, and platform area
2.16.4 Overload detection means
2.16.5 Speed-limiting device
2.17 Car and counterweight safeties [Go to Page]
2.17.1 Wire rope gripping safety
2.17.2 Rack-and-pinion safety
2.17.3 Safety marking plates
2.17.4 Opening of driving-machine motor and brake control circuits on safety application
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 [Go to Page]
2.20.1 Suspension means for counterweighted traction elevators
2.20.2 Suspension means for uncounterweighted traction elevators
2.20.3 The factor of safety shall be calculated by the following formula:
2.20.4 Replacement of suspension means
2.21 Counterweights [Go to Page]
2.21.1 Counterweight guides
2.21.2 Types of counterweight construction
2.22 Buffers, bumpers, and retardations [Go to Page]
2.22.1 Bumpers
2.22.2 Spring buffers
2.22.3 Retardations
2.23 Car and counterweight guidance systems, supports, and fastenings [Go to Page]
2.23.1 Wire rope guidance system for uncounterweighted traction drive machines
2.23.2 Ladder guidance systems
2.24 Driving machines, sheaves, and brakes [Go to Page]
2.24.1 Rack-and-pinion driving machines
2.24.2 Traction driving machines, sheave and brakes
2.24.3 Material and grooving for sheaves
2.24.4 Factor of safety for driving machines and sheaves
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
2.24.9 Means for manual release of driving machine brake
2.25 Terminal stopping devices [Go to Page]
2.25.1 Final terminal stopping
2.25.2 Normal terminal stopping
2.25.3 Slack rope detection
2.26 Operating devices and control equipment [Go to Page]
2.26.1 Operation and operating devices
2.26.2 Electrical protective devices
2.26.3 Contactors and relays for use in critical operating circuits
2.26.4 Electrical equipment and wiring
2.26.5 Phase protection of motors
2.26.6 Installation of capacitors or other devices to make electrical protective devices ineffective
2.26.7 Control and operating circuits
2.26.8 Release and application of driving-machine brakes
2.27 Emergency operation and signaling devices
2.28 Layout drawings
2.29 Welding [Go to Page]
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 certification requirements [Go to Page]
2.30.1 General requirements for tests and certifications
2.30.2 Type tests of interlocks, combination mechanical locks and electric contacts, and door or gate electric contacts
2.30.3 General requirements
2.30.4 Required tests and procedure
2.31 Code data plate [Go to Page]
2.31.1 Required information
2.31.2 Location
2.31.3 Material and construction
3 Maintenance, repair, replacement, testing, and alterations [Go to Page]
3.1 Maintenance [Go to Page]
3.1.1 General maintenance requirements
3.1.2 Maintenance personnel
3.1.3 Maintenance records
3.1.4 Code data plate
3.1.5 General maintenance methods and procedures
3.1.6 Periodic tests
3.2 General repair requirements [Go to Page]
3.2.1 Applicable codes
3.2.2 Welding and design
3.2.3 Repair of suspension, guide, and safety ropes
3.2.4 Repair of safety
3.3 General replacement requirements [Go to Page]
3.3.1 Replacement parts
3.3.2 Replacement suspension, guide, and safety rope
3.3.3 Replacement of car or counterweight safety
3.3.4 Replacement of driving machine
3.3.5 Replacement of controller
3.3.6 Listed/certified devices
3.4 Maintenance and testing of wind turbine tower elevators [Go to Page]
3.4.1 Suspension means
3.4.2 Wire rope gripping safeties
3.4.3 Brakes
3.4.4 Car and counterweight safeties
3.4.5 Tests without load via alternative test methodologies
3.5 Alterations [Go to Page]
3.5.1 Applicability of alteration requirements
3.5.2 Items not covered in
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 clearances and runbys
3.5.11 Horizontal car and counterweight clearances
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 car illumination
3.5.16 Car frames and platforms
3.5.17 Change in rated speed
3.5.18 Driving machines and sheaves
3.5.19 Controllers
3.5.20 Car and counterweight safeties
3.6 Acceptance inspections and tests [Go to Page]
3.6.1 General requirements for acceptance inspections and tests
3.6.2 Acceptance inspections and tests
3.6.3 Inspection and test requirements for altered installations
3.7 Periodic inspections and witnessing of tests [Go to Page]
3.7.1 General requirements for periodic inspections and witnessing of tests
3.7.2 Periodic inspection requirements
3.7.3 Periodic test requirements — Category 1
3.7.4 Periodic test requirements — Category 5
3.7.5 Category 5 tests without load via alternative test methodologies
Figure [Go to Page]
Figure B-1 Maintenance control program records
Table [Go to Page]
Table B-1 Maintenance control program records
Annex A (informative)Wind turbine tower elevator clearances
Annex B (informative)Maintenance control program records
Annex C (informative)Acceptance tests [Go to Page]

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ASME A17.8/CSA B44.8 - 2021 Standard for Wind Turbine Tower Elevators, 2021

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