1.1 This specification covers the specifications, safety requirements, performance, design, practices, marking instructions and test methods for Multi-Story Building External Evacuation Platform Rescue Systems (PRS) for emergency escape of persons who cannot use the normal means of egress to a safe area and for transport of emergency responders vertically.
1.2 This standard is applicable only to PRS's:
1.2.1 Permanently installed;
1.2.2 Designed for multi-cycle and repetitive use; and
1.2.3 Where descent is controlled to limit speed before arrival at a floor or landing zone.
1.3 This standard does not cover:
1.3.1 Platform devices that are used primarily for purposes other than emergency evacuation and/or access;
1.3.2 Helicopters or other flying platforms;
1.3.3 Any other devices covered under/within ASME A17.1;
1.3.4 A PRS utilizing platform(s) that can be transported to or between buildings during operations; and
1.3.5 A PRS using driving methods other than positive drive as drum and ropes.
1.4 Operation of a PRS is limited to trained and authorized operators.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 Table of Contents:
| | Section |
| Scope | 1 |
| Referenced Documents | 2 |
| Terminology | 3 |
| Building Interface Requirements and Installation | 4 |
| Environmental Conditions | 5 |
| Fire and Smoke Protection | 6 |
| Material Requirements | 7 |
| Structural, Mechanical and Stability Calculations | 8 |
| Mechanical and Physical Properties | 9 |
| Buffers and Guides | 10 |
| Suspension Wire Rope and Wire Rope Connections | 11 |
| Hoisting Machines and Pulleys | 12 |
| Means to Prevent Falling of the Platform(s) | 13 |
| Electrical Power Requirements | 14 |
| Operation, Control and Communication | 15 |
| Accompanying Documents | 16 |
| Markings, Warnings and Operating Instructions | 17 |
| Verification of Safety Requirements | 18 |
| Quality Assurance | 19 |
| Maintenance | 20 |
| Keywords | 21 |
| Type Tests | Annex A1 |
| Tests and Verifications Before First Use | Annex A2 |
| Periodic Verifications | Annex A3 |
| PRS Utilization Procedures | Annex A4 |
| Rationale Statement | Appendix X1 |
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.