GB 23394-2025 英文版翻译版 呼吸防护 正压式自给闭路压缩氧气呼吸器
GB 23394-2024 英文版/翻译版 呼吸防护 正压式自给闭路压缩氧气呼吸器
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呼吸防护 正压式自给闭路压缩氧气呼吸器
1 范围
本文件规定了正压式自给闭路压缩氧气呼吸器的分类和标记、技术要求、检验规则、标志、包装、运输和储存的要求，描述了试验方法。
本文件适用于正压式自给闭路压缩氧气呼吸器（以下简称氧气呼吸器）。
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 1226 一般压力表
GBT 2410 透明塑料透光率和雾度的测定
GB 2626-2019 呼吸防护自吸过滤式防颗物呼吸器
GB 2890-2022 呼吸防护 自吸过滤式防毒面具
GB/T 3836.1 爆炸性环境 第1部分：设备通用要求
GB/T 3836.4 爆炸性环境 第4部分：由本质安全型“i”保护的设备
GB/T 8982 医用及航空呼吸用氧
GB/T 11640 铝合金无缝气瓶
展开全文GBT 16556-2007 自给开路式压缩空气呼吸器
GB/T 28053 铝合金内胆碳纤维全绕气瓶
GB/T 32166.2-2015 个体防护装备眼面部防护职业眼面部防护具第2部分：测量方法
MT/T 454 隔绝式氧气呼吸器和自救器用氧化钙技术条件
TSG 23-2021 气瓶安全技术规程
3 术语和定义
下列术语和定义适用于本文件。
3.1
正压式自给闭路压缩氧气呼吸器
positive pressure self-contained closed-circuit compressed oxygen breathing apparatus
利用面罩使佩戴人员呼吸器官与外界有害环境空气隔离，以压缩氧气作为呼吸气源，吸收呼出气体中的二氧化碳、补充氧气后再供人员呼吸，形成一个完整的呼吸环，在任一呼吸循环过程，低压系统内压力均不低于环境压力的携气隔绝式呼吸防护装备。
3.2
高压系统high pressure system
由气瓶、气瓶阀、减压器、手动补给阀、压力指示器和报警器等承载高压氧气的部件及连接件所组成的呼吸器高压气路部分。
3.3
中质系统medium pressure system
由定量供氧阀、自动补给阀等承载中压氧气的部件及其连接件所组成的呼吸器中压气路部分。
3.4
低压系统low pressure system
由面罩、呼气阀、吸气阀、呼吸软管、清净罐、冷却、排气阀和呼吸气囊或呼吸舱等承载低压氧气的部件及其连接件所组成的呼吸器低压气路部分。
4 分类和标记
4.1 分类
4.1.1 按额定防护时间分类
按额定防护时间，正压式自给闭路压缩氧气呼吸器分为以下4类：
a） 一小时正压式氧气呼吸器，代号：1h；
b） 二小时正压式氧气呼吸器，代号：2h；
c） 三小时正压式氧气呼吸器，代号：3h；
d） 四小时正压式氧气呼吸器，代号：4h。
4.1.2 按低压部分储气结构分类
按低压部分储气结构，正压式自给闭路压缩氧气呼吸器分为以下2类：
a） 囊式正压式氧气呼吸器，代号：N；
b） 舱式正压式氧气呼吸器，代号：C
4.1.3 按气瓶分类
按气瓶类型，正压式自给闭路压缩氧气呼吸器分为以下2类：
a） 铝合金内胆碳纤维全缠绕气瓶氧气呼吸器，代号：F：
b） 铝合金无缝气瓶氧气呼吸器，代号：L。
4.2 标记
4.2.1 产品标记由产品名称、本文件编号、额定防护时间、低压部分储气结构和气瓶类型等组成，或执行相关行业标准的规定。
示例：四小时囊式正压式氧气呼吸器，采用铝合金内胆碳纤维全继绕气瓶，其标记为：
正压式自给闭路乐缩氧气呼吸器GB 23394-4h-N-F
4.2.2 面罩上应有永久性生产年月和号码标志，“S”表示小号，“M”表示中号，"L"表示大号
Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus
1 Scope
This document specifies the classification and marking, technical requirements, inspection rules, as well as the requirements for the marking, packaging, transport, and storage of positive pressure self-contained closed-circuit compressed oxygen breathing apparatus, and describes the test methods.
This document applies to positive pressure self-contained closed-circuit compressed oxygen breathing apparatus (hereinafter referred to as “oxygen breathing apparatus”).
2 Normative references
The following documents contain requirements 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 of the referenced document (including any amendments) applies.
GB/T 1226 General pressure gauge
GB/T 2410 Determination of the luminous transmittance and haze of transparent plastics
GB 2626-2019 Respiratory protection - Non-powered air-purifying particle respirator
GB 2890-2022 Respiratory protection - Non-powered air-purifying respirators
GB/T 3836.1 Explosive atmospheres - Part 1: Equipment - General
GB/T 3836.4 Explosive atmospheres - Part 4: Equipment protection by intrinsic safety “i”
GB/T 8982 Oxygen supplies for medicine and aircraft breathing
GB/T 11640 Seamless aluminum alloy gas cylinders
GB/T 16556-2007 Self-contained open-circuit compressed air breathing apparatus
GB/T 28053 Fully wrapped carbon fibre reinforced composite gas cylinders with aluminium alloy liners
GB/T 32166.2-2015 Personal protective equipment - Eye and face protection - Occupational eye and face protectors - Part 2: Test methods
MT/T 454 The calcium hydroxide specification for the isolation type oxygen respirator and the self-rescuer
TSG 23-2021 Regulation on safety technology for gas cylinder
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
positive pressure self-contained closed-circuit compressed oxygen breathing apparatus
respiratory protection equipment that isolates the wearer's breathing organs from harmful ambient air using a mask, and utilizing compressed oxygen as the breathing gas source, absorbing carbon dioxide from exhaled gas, replenishing oxygen, and supplying it back to the wearer to form a complete breathing cycle, ensuring that the pressure within the low pressure system remains no lower than the ambient pressure throughout any breathing cycle
3.2
high pressure system
high pressure gas circuit of breathing apparatus, consisting of components and connectors that contain high pressure oxygen, including gas cylinder, cylinder valve, pressure reducer, manual supply valve, pressure indicator, and alarm
3.3
medium pressure system
medium pressure gas circuit of breathing apparatus, composed of components and connectors that contain medium pressure oxygen, including constant-flow supply valve and automatic supply valve
3.4
low pressure system
low pressure gas circuit of breathing apparatus, composed of components and connectors that contain low pressure oxygen, including mask, exhalation valve, inhalation valve, breathing hose, purifier canister, cooling system, exhaust valve, and breathing bag or breathing chamber
4 Classification and marking
4.1 Classification
4.1.1 Classification by rated protection time
By rated protection time, positive pressure self-contained closed-circuit compressed oxygen breathing apparatus is classified into the following four types:
a) one-hour positive pressure oxygen breathing apparatus, code: 1h;
b) two-hour positive pressure oxygen breathing apparatus, code: 2h;
c) three-hour positive pressure oxygen breathing apparatus, code: 3h;
d) four-hour positive pressure oxygen breathing apparatus, code: 4h.
4.1.2 Classification by storage structure of low pressure section
By storage structure of low pressure section, positive pressure self-contained closed-circuit compressed oxygen breathing apparatus is classified into the following two types:
a) bag-type positive pressure oxygen breathing apparatus, code: N;
b) chamber-type positive pressure oxygen breathing apparatus, code: C.
4.1.3 Classification by gas cylinder
By the type of gas cylinder, positive pressure self-contained closed-circuit compressed oxygen breathing apparatus is classified into the following two types:
a) oxygen breathing apparatus with fully wrapped carbon fibre reinforced composite gas cylinders with aluminium alloy liners, code: F;
b) oxygen breathing apparatus with seamless aluminum alloy gas cylinders, code: L.
4.2 Marking
4.2.1 Product marking consists of product name, serial number of this document, rated protection time, storage structure of low pressure section, and gas cylinder type, or follows relevant industry standards.
Example: four-hour bag-type positive pressure oxygen breathing apparatus using fully wrapped carbon fibre reinforced composite gas cylinders with aluminium alloy liners is marked as:
positive pressure self-contained closed-circuit compressed oxygen breathing apparatus GB 23394-4h-N-F
4.2.2 The mask shall bear a permanent marking of production date and serial number, where "S" represents small size, "M" represents medium size, and "L" represents large size.
