Rules for the improvement of safety of existing lifts
1 Scope
1.1 This document specifies the methods for improving the safety of existing lifts, with the aim of applying current safety technology to make existing lifts achieve the same level of safety as newly installed lifts.
Note: Due to the design condition of the building, it may be difficult to fully achieve the current safety level.
1.2 This document is applicable to permanently installed traction, forced and hydraulically driven passenger or cargo lifts.
This document can be used to improve the safety of existing lifts for the following personnel:
a) passengers;
b) maintenance and inspection personnel;
c) persons who may be affected by lifts around hoistways, machine spaces and between pulleys;
d) any other authorized person.
1.3 This document is not applicable to the following situations, but can be used as a reference:
a) Lifts other than the driving modes specified in GB/T 7588.1-2020;
b) Lifting equipment, such as chain bucket lifts, mine lifts, stage lifts, machinery with automatic cages and hoppers, construction lifts, marine lifts, offshore mining or drilling platforms, construction and maintenance machinery, or lifts in wind power towers;
c) Lifts with inclination angle between guide rail and plumb line greater than 15°;
d) Lifts (lifting platforms) with rated speeds less than or equal to 0.15 m/s;
e) Safety of operation during transportation, installation, repair and disassembly of lifts.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 7024 Terminology of lifts, escalators, passenger conveyors
GB/T 7588.1-2020 Safety rules for the construction and installation of lifts - Part 1: Passenger and freight lifts
GB/T 20900 Lifts (elevators), escalators and moving walks - Risk assessment and reduction methodology
GB/T 23821-2022 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs
GB/T 24475 Remote alarm on lifts (elevators)
GB/T 24477-2009 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs
GB/T24479-2023 Behaviour of lifts in the event of fire
GB/T 24480-2009 Landing doors fire resistance test - Methods for leakage rate, thermal insulation and radiation
GB/T26465-2021 Safety rules for the construction and installation of firefighters lifts
GB/T 28621-2023 Safety rules for the construction and installation of new lifts in existing building
GB/T 31095-2014 Lifts subject to seismic conditions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 7024, GB/T 7588.1-2020, GB/T 20900 and the following apply.
3.1
existing lift
lift that has been put into use
3.2
owner of the installation
natural person or legal person who has the right to dispose of lifts and is responsible for their operation
4 List of major hazards
4.1 Major hazards involved
This clause includes all major hazards, hazardous states, and events related to this document, which are identified as major risks for existing lifts through risk assessment and measures shall be taken to eliminate or reduce them.
The major hazards involved in this document are listed in Table 1.
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 List of major hazards
5 Measures to improve the safety of existing lifts
6 Verification of safety measures and/or protection devices
7 Technical documents
Annex A (Normative) Safety checklist for existing lifts
Bibliography
ICS 91.140.90
CCS Q 78
National Standard of the People’s Republic of China
GB/T 24804-2023
Replaces GB/T 24804-2009
Rules for the improvement of safety of existing lifts
提高在用电梯安全性的规范
(English Translation)
Issue date: 2023-09-07 Implementation date: 2023-09-07
Issued by 国家市场监督管理总局
国家标准化管理委员会
Contents
前言 i
引言 ii
1 范围 1
2 规范性引用文件 1
3 术语和定义 2
4 重大危险清单 2
5 提高在用电梯安全性的措施 6
6 安全措施和(或)保护装置的验证 10
7 技术文件 10
附录A(规范性)在用电梯安全性检查表 11
参考文献 27
提高在用电梯安全性的规范
1 范围
1.1 本文件规定了提高在用电梯安全性的方法,目标是应用当前的安全技术使在用电梯达到新安装电梯同等的安全程度。
注:由于建筑物设计状况等原因,完全达到当前的安全程度可能有困难
1.2 本文件适用于永久安装的曳引,强制和液压驱动的乘客电梯或载货电梯。
本文件为下列人员提高在用电梯安全性:
a) 乘客;
b) 维护和检查人员;
c) 井道、机器空间和滑轮间周围可能受到电梯影响的人员;
d) 任何其他被授权人员。
1.3 本文件不适用于下列情况,但可作为参考:
a) GB/T 7588.1一2020 所规定的驱动方式以外的电梯;
b) 升降设备,例如链斗式升降机、矿山升降机、舞台提升设备、具有自动吊笼和料斗的机械、施工升降机、船用升降机、海上开采或钻井平台、建筑和维修机械,或者风力发电塔内的电梯;
c) 导轨与铅垂线倾斜角大于 15的电梯;
d) 额定速度小于或等于0.15 m/s 的电梯(升降平台);
e) 在电梯的运输、安装、修理和拆卸期间操作的安全性
2 规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中,注日期的引用文件,仅该日期对应的版本适用于本文件;不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 7024 电梯、自动扶梯、自动人行道术语
GB/T 7588.1-2020 电梯制造与安装安全规范 第1部分: 乘客电梯和载货电梯
GB/T 20900 电梯、自动扶梯和自动人行道 风险评价和降低的方法
GB/T 23821-2022 机械安全 防止上下肢触及危险区的安全距离
GB/T 24475 电梯远程报警系统
GB/T 24477-2009 适用于残障人员的电梯附加要求
GB/T24479-2023 火灾情况下的电梯特性
GB/T 24480-2009 电梯层门耐火试验 泄漏量、隔热、辐射测定法
GB/T26465-2021 消防员电梯制造与安装安全规范
GB/T 28621-2023 安装于现有建筑物中的新电梯制造与安装安全规范
GB/T31095-2014 地震情况下的电梯要求
3 术语和定义
GB/T 7024、GB/T 7588.1-2020、GB/T 20900 界定的以及下列术语和定义适用于本文件。
3.1
在用电梯existing lift
已投入使用的电梯
3.2
电梯业主 owner of the installation
对电梯具有处置权并对电梯运行负责的自然人或法人
4 重大危险清单
4.1 所涉及的重大危险
本条中包括本文件涉及的所有重大危险、危险状态和事件,它们由风险评价确定为在用电梯的重大风险,并应采取措施消除或降低。
本文件所涉及的重大危险见表 1。