ASME A17.3 2020

$98.04

ASME A17.3-2020 Safety Code for Existing Elevators and Escalators

Published By	Publication Date	Number of Pages
ASME	2020	121

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Description

The purpose of this Code is to establish minimum requirements that will provide a reasonable degree of safety for the general public. While many of these requirements will also increase the degree of safety for the elevator mechanic and inspector, this area has not been specifically addressed at this time.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
7	FOREWORD
9	ASME A17 COMMITTEE ROSTER
15	PREFACE
19	ASME A17.3-2020 SUMMARY OF CHANGES
22	Part I Introduction SECTION 1.1 SCOPE 1.1.1 Equipment Covered by This Code 1.1.2 Equipment Not Covered by This Code SECTION 1.2 APPLICATION OF CODE
23	SECTION 1.3 PURPOSE AND EXCEPTIONS 1.3.1 Purpose 1.3.2 Exceptions SECTION 1.4 DEFINITIONS
39	SECTION 1.5 ALTERATIONS, MAINTENANCE, AND INSPECTIONS AND TESTS SECTION 1.6 REFERENCE DOCUMENTS Tables Table 1.6-1 Reference Documents
40	Table 1.6-2 Procurement Information
41	Part II Hoistways and Related Construction for Electric Elevators SCOPE SECTION 2.1 HOISTWAYS 2.1.1 Hoistway Construction 2.1.2 Windows in Hoistway Enclosures 2.1.3 Projections in Hoistway 2.1.4 Pipes, Air Ducts, and Wiring
42	2.1.5 Counterweight Guards SECTION 2.2 MACHINE ROOMS AND MACHINERY SPACES 2.2.1 Enclosures 2.2.2 Access to Machine Rooms and Machinery Spaces 2.2.3 Lighting
43	2.2.4 Ventilation 2.2.5 Pipes, Air Ducts, and Wiring 2.2.6 Protection From Weather SECTION 2.3 PITS 2.3.1 Access to Pits 2.3.2 Drains 2.3.3 Stop Switch SECTION 2.4 CLEARANCES AND RUNBYS 2.4.1 Horizontal Car Clearances 2.4.2 Bottom Car Clearances 2.4.3 Bottom Car and Counterweight Runby 2.4.4 Top Car Clearance
44	2.4.5 Landing Sill Clearance SECTION 2.5 PROTECTION OF SPACES BELOW HOISTWAYS SECTION 2.6 HOISTWAY ENTRANCES 2.6.1 Doors or Gates Required
45	2.6.2 Closing of Hoistway Doors 2.6.3 Hoistway-Door Vision Panels 2.6.4 Door Hangers 2.6.5 Nonshearing Astragals 2.6.6 Pull Straps
46	2.6.7 Bottom Guides SECTION 2.7 HOISTWAY-DOOR LOCKING DEVICES, PARKING DEVICES, AND ACCESS 2.7.1 Hoistway-Door or Hoistway-Gate Locking Devices 2.7.2 Closed Position of Hoistway Doors
47	2.7.3 Elevator Parking Device 2.7.4 Access to Hoistway
48	2.7.5 Restricted Opening of Hoistway Doors and/or Car Doors on Passenger Elevators 2.7.6 Hoistway Emergency Door Contacts SECTION 2.8 POWER OPERATION OF DOORS AND GATES 2.8.1 Kinetic Energy and Force Limitations for Power-Operated Horizontally Sliding Doors 2.8.2 Reopening Device for Power-Operated Car Doors or Gates
49	Part III Machinery and Equipment for Electric Elevators SCOPE SECTION 3.1 BUFFERS AND BUMPERS SECTION 3.2 COUNTERWEIGHTS SECTION 3.3 CAR FRAMES AND PLATFORMS 3.3.1 Car Platforms 3.3.2 Platform Guards (Aprons) 3.3.3 Hinged Platform Sills 3.3.4 Floating (Movable) Platforms
50	3.3.5 Protection of Platforms Against Fire SECTION 3.4 CAR ENCLOSURES 3.4.1 Car Enclosures 3.4.2 Car Doors and Gates 3.4.3 Location of Car Doors and Gates in Relation to Hoistway Door
51	3.4.4 Emergency Exits
52	3.4.5 Car Illumination 3.4.6 Protection of Light Bulbs and Tubes SECTION 3.5 SAFETIES 3.5.1 Car Safeties 3.5.2 Counterweight Safeties 3.5.3 Safeties to Stop Ascending Cars or Counterweights Prohibited 3.5.4 Application and Release of Safeties
53	3.5.5 Maximum Permissible Movement of Governor Rope to Operate the Safety Mechanism 3.5.6 Rail Lubricants and Lubrication Plate 3.5.7 Overall Length of Guide Rails SECTION 3.6 SPEED GOVERNORS 3.6.1 Speed Governor Overspeed and Car Safety Mechanism Switches 3.6.2 Governor Ropes SECTION 3.7 CAPACITY AND LOADING 3.7.1 Minimum Rated Load for Passenger Elevators 3.7.2 Use of Partitions for Reducing Inside Net Platform Area
54	3.7.3 Minimum Rated Load for Freight Elevators Figures Figure 3.7.1-1 Inside Net Platform Areas for Passenger Elevators Table 3.7.1-1 Maximum Inside Net Platform Areas for the Various Rated Loads
55	3.7.4 Capacity Plates 3.7.5 Signs on Freight Elevators SECTION 3.8 DRIVING MACHINES AND SHEAVES 3.8.1 General Requirements 3.8.2 Winding Drum Machines
56	3.8.3 Indirect-Drive Machines 3.8.4 Brakes 3.8.5 Emergency Brake
57	3.8.6 Emergency Brake Supports, Allowed Stresses, and Factors of Safety SECTION 3.9 TERMINAL STOPPING DEVICES 3.9.1 Normal Terminal Stopping Devices
58	3.9.2 Final Terminal Stopping Devices SECTION 3.10 OPERATING DEVICES AND CONTROL EQUIPMENT 3.10.1 Types of Operating Devices 3.10.2 Car-Switch Operation Elevators 3.10.3 Top-of-Car Operating Devices 3.10.4 Electrical Protective Devices
59	3.10.5 Power Supply Line Disconnecting Means 3.10.6 Phase Reversal and Failure Protection
60	3.10.7 Operating of the Driving Machine With a Hoistway Door Unlocked or a Hoistway Door or a Car Door Not in the Closed Position 3.10.8 Release and Application of Driving Machine Brakes 3.10.9 Control and Operating Circuit Requirements 3.10.9.1 3.10.9.2 3.10.10 Absorption of Regenerated Power 3.10.11 Reserved for Future Use 3.10.12 System to Monitor and Prevent Automatic Operation of the Elevator With Faulty Door Contact Circuits 3.10.13 Ascending Car Overspeed Protection Device 3.10.14 Unintended Car Movement Device
61	SECTION 3.11 EMERGENCY OPERATION AND SIGNALING DEVICES 3.11.1 Car Emergency Signaling Devices 3.11.2 Operations of Elevators Under Standby (Emergency) Power 3.11.3 Firefighters’ Service SECTION 3.12 SUSPENSION MEANS AND THEIR CONNECTIONS 3.12.1 Suspension Means 3.12.2 Rope Data Tag 3.12.3 Factor of Safety
62	3.12.4 Minimum Number and Diameter of Suspension Ropes 3.12.5 Suspension Rope Equalizers 3.12.6 Securing of Suspension Wire Ropes to Winding Drums 3.12.7 Spare Rope Turns on Winding Drums Table 3.12.3-1 Minimum Factors of Safety for Suspension Wire Ropes
63	3.12.8 Suspension Rope Fastenings 3.12.9 Auxiliary Rope Fastening Devices SECTION 3.13 ASCENDING CAR OVERSPEED AND UNINTENDED CAR MOVEMENT PROTECTION 3.13.1 Ascending Car Overspeed Protection 3.13.2 Unintended Car Movement Protection
65	Part IV Hydraulic Elevators SCOPE SECTION 4.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION SECTION 4.2 MECHANICAL EQUIPMENT 4.2.1 Buffers and Bumpers 4.2.2 Car Frames and Platforms 4.2.3 Car Enclosures 4.2.4 Capacity and Loading SECTION 4.3 DRIVING MACHINES 4.3.1 Connection to Driving Machine 4.3.2 Plunger Stops 4.3.3 Hydraulic Elevators
66	SECTION 4.4 VALVES, SUPPLY PIPING, AND FITTINGS 4.4.1 Pump Relief Valve 4.4.2 Check Valve 4.4.3 Mechanically Controlled Operating Valves 4.4.4 Supply Piping and Fittings SECTION 4.5 TANKS 4.5.1 General Requirements 4.5.2 Pressure Tanks SECTION 4.6 TERMINAL STOPPING DEVICES
67	SECTION 4.7 OPERATING DEVICES AND CONTROL EQUIPMENT 4.7.1 Operating Devices 4.7.2 Top-of-Car Operating Devices 4.7.3 Anticreep Leveling Devices 4.7.4 Electrical Protective Devices 4.7.5 Power Supply Line Disconnecting Means 4.7.6 Devices for Making Hoistway-Door Interlocks or Electric Contacts, or Car Door or Gate Electric Contacts Inoperative 4.7.7 Control and Operating Circuit Requirements 4.7.8 Emergency Operation and Signaling Devices 4.7.9 System to Monitor and Prevent Automatic Operation of the Elevator With Faulty Door Contact Circuits SECTION 4.8 ADDITIONAL REQUIREMENTS FOR COUNTERWEIGHTED HYDRAULIC ELEVATORS SECTION 4.9 ADDITIONAL REQUIREMENTS FOR ROPED-HYDRAULIC ELEVATORS 4.9.1 Top Car Clearance
68	4.9.2 Top Counterweight Clearance and Bottom Counterweight Runby 4.9.3 Protection of Spaces Below Hoistway 4.9.4 Piston Stops 4.9.5 Piston Connections 4.9.6 Car Safety Devices 4.9.7 Speed Governors 4.9.8 Sheaves 4.9.9 Slack-Rope Device 4.9.10 Suspension Ropes and Their Connections
69	Part V Escalators SCOPE SECTION 5.1 CONSTRUCTION 5.1.1 Balustrades 5.1.2 Clearance Between Skirt and Step 5.1.3 Guards at Ceiling or Soffit Intersections 5.1.4 Antislide Device 5.1.5 Handrails 5.1.6 Handrail Guards 5.1.7 Step Risers 5.1.8 Slotting of Step Treads 5.1.9 Combplates 5.1.10 Deck Barricades
70	5.1.11 Step/Skirt Performance Index SECTION 5.2 BRAKES 5.2.1 General Requirements 5.2.2 Main Drive Shaft Brake SECTION 5.3 OPERATING AND SAFETY DEVICES 5.3.1 Starting Switches 5.3.2 Emergency Stop Buttons
71	5.3.3 Speed Governor 5.3.4 Broken Step-Chain Device 5.3.5 Application of Brake 5.3.6 Broken Drive-Chain Device 5.3.7 Skirt Obstruction Device 5.3.8 Rolling Shutter Device 5.3.9 Reversal Stop Device 5.3.10 Tandem Operation 5.3.11 Caution Signs 5.3.12 Escalator Smoke Detectors SECTION 5.4 LIGHTING OF ESCALATORS
72	SECTION 5.5 ENTRANCE AND EGRESS ENDS 5.5.1 Combplates 5.5.2 Distinction Between Comb and Step 5.5.3 Adjacent Floor Surfaces 5.5.4 Safety Zone Figure 5.3.11-1 Caution Sign
73	5.5.5 Landing Access Plates
74	Part VI Dumbwaiters SCOPE SECTION 6.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION 6.1.1 Machine Rooms and Machinery Spaces 6.1.2 Clearances and Runbys 6.1.3 Doors or Gates Required 6.1.4 Closing of Hoistway Doors
75	6.1.5 Hoistway-Door Vision Panels 6.1.6 Hoistway-Door or Gate Locking Devices 6.1.7 Parking Devices 6.1.8 Access to Hoistway 6.1.9 Kinetic Energy and Force Limitations for Power-Operated Vertically Sliding Doors 6.1.10 Reopening Devices for Power-Operated Car Doors or Gates SECTION 6.2 MACHINERY AND EQUIPMENT FOR HAND AND ELECTRIC DUMBWAITERS 6.2.1 Buffers and Bumpers 6.2.2 Car Frames and Platforms 6.2.3 Car Enclosures
76	6.2.4 Car Doors and Gates 6.2.5 Emergency Exits 6.2.6 Car Illumination 6.2.7 Safeties 6.2.8 Capacity and Loading 6.2.9 Driving Machines and Sheaves 6.2.10 Normal Terminal Stopping Devices 6.2.11 Final Terminal Stopping Devices 6.2.12 Operating Devices and Control Equipment 6.2.13 Emergency Operation and Signaling Devices 6.2.14 Suspension Means
77	6.2.15 Chain Data 6.2.16 Factor of Safety 6.2.17 Minimum Number and Diameter of Suspension Ropes 6.2.18 Suspension Rope Fastenings SECTION 6.3 MACHINERY AND EQUIPMENT FOR HYDRAULICDUMBWAITERS 6.3.1 Car Buffers or Bumpers 6.3.2 Counterweights 6.3.3 Car Frames and Platforms 6.3.4 Car Enclosures, Car Doors and Gates, and Car Illumination 6.3.5 Car Safeties 6.3.6 Counterweight Safeties 6.3.7 Capacity and Loading 6.3.8 Driving Machines, Valves, Supply Piping, Fittings, and Tanks 6.3.9 Terminal Stopping Devices 6.3.10 Operating Devices and Control Equipment 6.3.10.1 Anticreep Leveling Devices.
78	6.3.10.2 Electrical Protective Devices. 6.3.10.3 Power Supply Line Disconnecting Means. 6.3.10.4 Devices for Making Hoistway-Door Interlocks or Electric Contacts or Car Door or Gate Electric Contacts Inoperative. 6.3.10.5 Control and Operating Circuit Requirements. 6.3.11 Additional Requirements for Counterweighted Hydraulic Dumbwaiters
79	Part VII Hand Elevators SCOPE SECTION 7.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION 7.1.1 Enclosures for Machines and Control Equipment 7.1.2 Access to Machines and Sheaves 7.1.3 Pit 7.1.4 Clearances and Runbys 7.1.5 Hoistway Entrances: Type of Entrances 7.1.6 Hoistway Gates for Landing Openings of Hand Elevators 7.1.7 Closing of Hoistway Doors 7.1.8 Hoistway-Door Vision Panel 7.1.9 Hoistway-Door Locking Devices for Hand Elevator
80	SECTION 7.2 MACHINERY AND EQUIPMENT 7.2.1 Buffers and Bumpers 7.2.2 Counterweights 7.2.2.1 Counterweight Construction. 7.2.3 Car Frames and Platforms 7.2.4 Car Enclosures 7.2.5 Emergency Exit 7.2.6 Illumination of Cars and Lighting Fixtures 7.2.7 Car Safety Devices 7.2.7.1 Car Safeties. 7.2.8 Capacity and Loading 7.2.8.1 Capacity and Loading.
81	7.2.9 Use of Partitions for Reducing Inside Net Platform Area 7.2.10 Driving-Machine Brakes 7.2.11 Power Attachments Not Permitted 7.2.12 Machinery and Sheave Beams, Supports for Hand Elevators 7.2.13 Suspension Means: Type and Number Required 7.2.14 Factor of Safety 7.2.15 Length of Suspension Members 7.2.16 Capacity Plate 7.2.17 Suspension Member Data
82	Part VIII Sidewalk Elevators SCOPE SECTION 8.1 HOISTWAY, HOISTWAY ENCLOSURES, AND MACHINE ROOMS 8.1.1 Hoistway, Hoistway Enclosures, and Machine Rooms 8.1.2 Location of Hoistway and Top-Landing Opening 8.1.3 Maximum Size of Opening Permitted in Sidewalk 8.1.4 Protection of Horizontal Openings in Sidewalks or Other Exterior Areas 8.1.5 Hinged-Type Swinging Doors 8.1.6 Vertically Lifting Covers
83	SECTION 8.2 MACHINERY AND EQUIPMENT 8.2.1 General Requirements 8.2.2 Buffers and Bumpers 8.2.3 Counterweights 8.2.4 Car Frames and Platforms 8.2.5 Bow-Irons and Stanchions 8.2.6 Car Enclosures and Car Doors and Gates 8.2.7 Car and Counterweight Safeties and Governors 8.2.8 Capacity and Loading 8.2.9 Driving Machines and Sheaves 8.2.10 Terminal Stopping Devices 8.2.11 Locking Devices for Hinged Swinging Doors or Vertically Lifting Covers in Sidewalks or Other Areas Exterior to the Building 8.2.12 Requirements for Electrical Wiring and Electrical Equipment 8.2.13 Clearance Between Loading Side of Car Platforms and Hoistway Enclosures
84	8.2.14 Operating Devices and Control Equipment of Sidewalk Elevator
85	Part IX Moving Walks SCOPE SECTION 9.1 PROTECTION OF FLOOR OPENINGS 9.1.1 Protection Required SECTION 9.2 PROTECTION OF SUPPORTS AND MACHINE SPACES AGAINST FIRE 9.2.2 Protection Required SECTION 9.3 CONSTRUCTION REQUIREMENTS 9.3.1 Angle of Inclination 9.3.2 Geometry 9.3.3 Balustrades
86	9.3.4 Handrails 9.3.5 Pallet-Type Treadway 9.3.6 Belt-Type Treadway 9.3.7 Width SECTION 9.4 ENTRANCE AND EGRESS ENDS 9.4.1 Combplates 9.4.2 Distinction Between Comb and Step 9.4.3 Adjacent Floor Surfaces SECTION 9.5 DRIVING MACHINE, MOTOR, AND BRAKE 9.5.1 Brakes
87	SECTION 9.6 OPERATING AND SAFETY DEVICES 9.6.1 General 9.6.2 Starting Switch 9.6.3 Emergency Stop Buttons 9.6.4 Speed Governor 9.6.5 Application of an Electrically Released Brake 9.6.6 Broken Drive-Chain Switch 9.6.7 Rolling Shutter Device 9.6.8 Reversal Stop Device 9.6.9 Tandem Operation 9.6.10 Disconnected Motor Safety Device 9.6.11 Signs
88	9.6.12 Broken Treadway Device 9.6.13 Moving Walk Smoke Detectors SECTION 9.7 LIGHTING AND ACCESS 9.7.1 Lighting of Treadway 9.7.2 Access to Interior
89	Part X Private Residence Elevators SCOPE SECTION 10.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION 10.1.1 Hoistway Enclosure Construction
90	10.1.2 Pits 10.1.3 Top Car Clearance 10.1.4 Protection of Hoistway Openings
91	10.1.5 Pipes in Hoistways 10.1.6 Horizontal Car Clearances 10.1.7 Guarding of Suspension Means SECTION 10.2 CARS 10.2.1 Car Frames and Platforms 10.2.2 Car Enclosure 10.2.2.1 Car Enclosure Required. 10.2.2.2 Securing Enclosures. 10.2.2.3 Glass in Elevator Cars.
92	10.2.3 Number of Compartments 10.2.4 Car Doors and Gates 10.2.4.1 Power Operation of Car Doors and Gates. 10.2.4.2 Car Door- or Gate-Locking Devices. 10.2.4.3 Car Door or Gate Electric Contacts. 10.2.5 Light in Car SECTION 10.3 COUNTERWEIGHTS 10.3.1 General Requirements 10.3.2 Location and Guarding of Counterweights 10.3.2.1 Counterweight on Cars Operating Through Hatch Covers. 10.3.2.2 Counterweight Coming Down to Floors or Passing Floors or Stairs. 10.3.2.3 Access to Enclosed Counterweights and Ropes. SECTION 10.4 SAFETIES AND GOVERNORS 10.4.1 Safeties Required 10.4.2 Operation of Safeties
93	10.4.3 Application of Safeties 10.4.4 Location of Speed Governor 10.4.5 Opening of the Brake Circuit on Safety Application 10.4.6 Governor Ropes SECTION 10.5 CAR AND COUNTERWEIGHT GUIDE RAILS AND FASTENINGS 10.5.1 Material 10.5.2 Fastenings, Deflections, and Joints 10.5.3 Extension of Guide Rails at Top and Bottom of Hoistway SECTION 10.6 CAR AND COUNTERWEIGHT BUFFERS 10.6.1 Buffers and Buffer Supports SECTION 10.7 DRIVING MACHINES, SHEAVES, AND THEIR SUPPORTS 10.7.1 Overhead Machinery Beams and Supports 10.7.2 Material for Sheaves and Drums and Minimum Diameter
94	10.7.3 Fastening of Driving Machines and Sheaves to Underside of Overhead Beams 10.7.4 Factor of Safety for Overhead Beams and Supports 10.7.5 Hydraulic Driving Machine 10.7.6 Screw Machines 10.7.7 Rack-and-Pinion Machine 10.7.8 Set Screw Fastenings 10.7.9 Friction Gearing, Clutch Mechanisms, or Couplings 10.7.10 Use of Cast Iron in Gears 10.7.11 Driving-Machine Roller Chains and Sprockets 10.7.12 Driving-Machine Brakes 10.7.13 Emergency Operation (Manual)
95	SECTION 10.8 TERMINAL STOPPING DEVICES 10.8.1 Stopping Devices Required 10.8.2 Operation of Stopping Devices SECTION 10.9 OPERATING DEVICES AND CONTROL EQUIPMENT 10.9.1 Type of Operation 10.9.2 Control and Operating Circuit Requirements 10.9.3 Key-Operated Switches 10.9.4 Phase Reversal and Failure Protection 10.9.5 Emergency Stop Switch 10.9.6 Slack-Rope and Slack-Chain Devices for Winding Drum and Roller-Chain-Type Driving Machines
96	SECTION 10.10 EMERGENCY SIGNAL DEVICES 10.10.1 Emergency Signal SECTION 10.11 LIMITATION OF LOAD, SPEED, AND RISE 10.11.1 Capacity 10.11.2 Speed 10.11.3 Rise SECTION 10.12 MARKING PLATES 10.12.1 Capacity Plate SECTION 10.13 SUSPENSION MEANS 10.13.1 Types Permitted 10.13.2 Suspension Ropes 10.13.3 Factor of Safety of Suspension Means 10.13.4 Arc of Contact of Suspension Means on Sheaves and Sprockets 10.13.5 Spare Rope Turns on Winding Drums 10.13.6 Securing of Wire Suspension Ropes to Winding Drums 10.13.7 Splicing and Replacement of Suspension Ropes 10.13.8 Fastening of Wire Rope Suspension Means to the Car or to the Counterweight 10.13.9 Replacement of Chains and Sprockets
97	Figure A-1 Distance Between Swinging Hoistway Doors and Car Doors and Gates NONMANDATORY APPENDIX A DISTANCES BETWEEN HOISTWAY DOORS AND CAR DOORS OR GATES
98	Figure A-2 Distance Between Sliding Hoistway Doors and Car Doors and Gates
99	Figure A-3 Typical Sliding Hoistway Door Space Guard and Sight Guard
100	Figure A-4 Typical Swinging Hoistway Door Space Guards
101	Figure A-5 Typical Space Guard for Swinging Doors With Cutout for Doorknob, Handle, or Pull Bar
102	Figure B-1 Pusher-Type Roped-Hydraulic Elevators Figure B-2 Puller-Type Roped-Hydraulic Elevators NONMANDATORY APPENDIX B TYPES OF ROPED-HYDRAULIC ELEVATORS
103	NONMANDATORY APPENDIX C A17.1-1987, Rules 211.3–211.8 (See 3.11.3)
106	NONMANDATORY APPENDIX D RACK AND PINION MACHINES (A17.1-1987, Rules 208.3–208.9d, and Rule 1200.4e)
108	Table E-1 Traction Elevator Brake Type, Function, and Performance NONMANDATORY APPENDIX E ASCENDING CAR OVERSPEED AND UNINTENDED CAR MOVEMENT PROTECTION
109	Figure E-1 Ascending Car Overspeed Protection
110	Figure E-2 Unintended Car Movement Protection
111	INDEX