GB/T 26465-2021Safety rules for the construction and installation of firefighters lifts (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 26465-2011 "Safety Specifications for the Manufacturing and Installation of Fire Elevators", compared with GB/T 26465-2011, except In addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) Some normative references have been updated (see Chapter 2, Chapter 2 of the:2011 edition);

b) Added the requirements for the noise limit of firefighter elevator shaft pressurization system (see 5.1.8);

c) Changed the requirements for the minimum car size of firefighter elevators (see 5.2.2, 5.2.3, 5.2.3 of the:2011 edition);

d) Changed the requirements for each floor of the firefighter elevator service building (see 5.2.4, 5.2.2 of the:2011 edition);

e) Changed the requirements for the waterproof protection of electrical equipment in the elevator shaft, car roof and car outer wall for firefighters (see 5.3,:2011 edition of the 5.3);

f) Changed the relevant requirements for personnel rescue in the car (see 5.4.3, 5.4.4, 5.4.3 and 5.4.4 of the:2011 edition);

g) Changed the control logic of recalling the fireman's elevator through the fire switch in stage 2 (see 5.8.8, 5.7.8 of the:2011 edition);

h) Changed the relevant requirements for the control of fireman's elevator with double entry car (see 5.8.9, 5.7.9 of the:2011 edition);

i) Added informational appendices related to water management, building interface, maintenance requirements, and fire protection principles of high-rise buildings (see Appendix A, Appendix Appendix F, Appendix H and Appendix I).

Introduction

0.1 This document identifies the scope of hazards, hazardous states and events involved in firefighter lifts.

0.2 Firefighter elevators manufactured and installed in accordance with this document shall also meet the requirements of GB/T 7588.1.

When the requirements of GB/T 7588.1 are different, the provisions of this document need to be given priority.

0.3 This document is based on the following assumptions.

The owner, the buyer, the architectural design unit, the fire rescue department or other relevant units and the supplier have reached an agreement on the following issues.

a) the intended use of the firefighter lift;

b) environmental conditions;

c) Civil engineering problems;

d) the interface between the firefighter elevator and the building equipment management system (BMS) or fire detection system;

e) fire fighting strategy;

f) Smoke management, for example. the impact of the pressurized air supply system on the firefighter's elevator system (such as the shaking of the accompanying cable, the operation of the door, etc:);

g) water management, assuming the maximum allowable water level in the pit is 0.5m;

h) Matters related to the installation location of the fireman's elevator, the arrangement of the fireman's elevator, and the rescue of personnel in the car;

i) Power supply, including the use of regenerative electric energy during the power supply period of the second power supply, etc:;

j) space requirements for the front room;

k) Whether it is necessary to set up an additional key switch in the fireman's elevator car, and how to obtain the key.

0.4 It is necessary for the construction unit and architectural design unit to consider the relevant national building codes and provide suitable building fire-resistant structures, front rooms, fire detection detection and fire suppression systems. See examples given in Appendix C and Appendix J. Safety specification for the manufacture and installation of firefighter elevators

1 Scope

1.1 This document specifies additional requirements and differences for passenger elevators that comply with GB/T 7588.1-2020.

This document applies to firefighters Firefighter elevators for firefighting and evacuation under control.

1.2 This document applies where the following conditions are met.

a) Design elevator shafts and elevator environments to limit the entry of fire, heat, and smoke into elevator shafts, machine spaces, and front rooms;

b) Architectural design restricts the entry of water into the well;

c) Firefighter elevators are not used as escape routes;

d) Fire protection is adopted for the elevator shaft and the elevator environment, at least reaching the same fire rating as the building structure;

e) The power supply is safe, reliable and stable;

f) Fire protection is adopted for the power supply cables, at least reaching the same fire rating as the shaft structure;

g) Proper maintenance and inspections are carried out as planned.

1.3 This document does not apply to.

a) elevators with partially enclosed shafts used as firefighter elevators;

b) elevators installed in non-refractory building structures;

c) Major modification of elevators in use.

1.4 This document does not specify.

a) The number of firefighter elevators and the number of floors served during firefighting operations;

b) the space requirements of the front room;

c) Fire-fighting services for cars other than the highest floor car of a multi-storey car elevator.

1.5 This document deals with the major dangers related to the use of firefighter elevators according to the intended purpose of the manufacturer and under the conditions intended by the manufacturer. Hazardous states and events (see Chapter 4).

1.6 This document does not address the following major hazards (see Introduction 0.1) and is assumed to be considered by the architectural design unit.

a) There are insufficient numbers of firefighter lifts in the building or not located in the correct location for the transport of firefighters and equipment;

b) fire in the hoistway, front room, machine space or car of a firefighter's lift;

c) lack of identification signs on the floors of the landing;

d) Water management is not implemented effectively.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 4208 Enclosure Protection Level (IP Code) (GB/T 4208-2017, IEC 60529:2013, IDT)

GB/T 7025.1-2008 Main parameters of elevator and type and size of car, hoistway and machine room Part 1. Class I, II, III, VI electrical Ladder (ISO /DIS4190-1.2007, IDT)

GB/T 7588.1-2020 Safety Specifications for Elevator Manufacturing and Installation Part 1. Passenger Elevators and Freight Elevators (ISO 8100-1. END. Draft Version (GB/T 26465-2021)