2021 Edition of NFPA 30 Flammable and Combustible Liquid Code

The National Fire Protection Association (NFPA) has published the NFPA 30 Flammable and Combustible Liquids Code since 1913. Every three years its requirements are revised based on input from industry and government sectors. This highlights the major changes for the 2021 edition.

自 1913 年以来，美国国家消防协会 (NFPA) 发布了 NFPA 30 易燃和可燃液体规范。每三年根据行业和政府部门的意见修订其要求。 2021 版的主要变化如下：

The new code includes a significant change in its nomenclature along with revised sections addressing warehouse and tank storage, as well as piping. A flowchart was added in the annex to assist users interested in navigating chapters that pertain to container storage [including intermediate bulk container (IBC) storage], tank storage, piping, processing, and dispensing.

新规范包括对其命名法的重大更改，以及针对仓库和储罐存储以及管道的修订部分。 附件中添加了流程图，以帮助有兴趣浏览与集装箱存储[包括中型散货集装箱 (IBC) 存储]、罐式存储、管道、加工和分配相关的章节的用户。

What’s in a name?

The 2021 edition of NFPA 30 introduces and emphasizes the term “ignitible liquid” compared to “flammable and combustible liquid.” The terms “flammable and combustible liquid,” have been changed to “ignitible (flammable and combustible) liquid”. This revision does not affect existing code requirements, only the nomenclature used to describe the liquids.

2021 年版的 NFPA 30 引入并强调了“易燃液体”这一术语，与“易燃易燃液体”相比。 术语“易燃易燃液体”已更改为“易燃（易燃易燃）液体”。 本次修订不影响现有规范要求，仅影响用于描述液体的命名法。

The nomenclature was changed for two reasons. The first is that transportation and workplace codes use different flash points for the terms, “flammable” and “combustible.” Different definitions can create user confusion, potentially impair a user’s understanding of a liquid’s fire hazard and impact decisions made to protect against ignitible liquid fires. To clarify the potential for a liquid to produce ignitible vapors, the 2021 edition emphasizes the use of Liquid Class (Class IA, IB, IC, II, IIIA, and IIIB), which are tied to closed cup flash points, or in the case of Class IA and IB liquids, are tied to both the closed cup flash point and the boiling point. The term “flammable liquid” is now defined as a Class I liquid and a “combustible liquid” is defined as a Class II or III liquid. The second reason relates to the potential misconception that the term, “combustible liquid,” implies a lesser fire hazard than compared to fires involving flammable liquids. Full scale fire testing demonstrated that combustible liquids can generate fires that can approach the intensity of those generated with flammable liquids.

更改命名法有两个原因。首先是交通法规和工作场所法规对“易燃”和“可燃”这两个术语使用不同的闪点。不同的定义可能会造成用户混淆，可能会损害用户对液体火灾危险的理解，并影响为防止可燃液体火灾而做出的决定。为了阐明液体产生可燃蒸气的可能性，2021 版强调使用与闭杯闪点相关的液体等级（IA、IB、IC、II、IIIA 和 IIIB），或者在这种情况下IA 和 IB 类液体，与闭杯闪点和沸点有关。术语“易燃液体”现在定义为 I 类液体，“可燃液体”定义为 II 类或 III 类液体。第二个原因与潜在的误解有关，即“可燃液体”一词意味着与涉及易燃液体的火灾相比，火灾危险较小。全面的火灾测试表明，可燃液体产生的火势可能接近易燃液体产生的火势。

What’s new in storage?

Storage requirements for various ignitible liquids have also been revised. One notable change is that the exemption for beverages, medicines, foodstuffs, cosmetics, and other consumer products containing water-miscible ignitible liquids was lowered from greater than 50 percent by volume to greater than 20 percent by volume. Fire testing on consumer products with greater than 20 percent water-miscible ignitible liquids demonstrated that these commodities are not adequately protected using fire protection measures in NFPA 13 Standard for the Installation of Sprinkler Systems. Therefore, these products are required to be protected under NFPA 30 requirements.

对各种可燃液体的储存要求也进行了修订。 一个显着的变化是，对含有水溶性可燃液体的饮料、药品、食品、化妆品和其他消费品的豁免从超过 50%（按体积计算）降低到超过 20%（按体积计算）。 对水溶性可燃液体含量超过 20% 的消费品进行的防火测试表明，使用 NFPA 13 喷水灭火系统安装标准中的防火措施，这些商品没有得到充分保护。 因此，这些产品需要受到 NFPA 30 要求的保护。

Chapters 12 and 16 were revised based on fire testing with Class IB, IC, II, IIIA and Class IIIB liquids. NFPA 30 Table 12.8.1 which addresses the Liquid-Container Combinations Permitted in a Protected General-Purpose Warehouse was extensively revised. Fire testing demonstrated that the criteria in Chapter 16 of NFPA 30 can effectively control fires involving eight new liquid/storage combinations listed in Table 12.8.1. Six new Chapter 16 fire protection design tables specify requirements for new combinations of liquid classes (or liquids), containers, and storage configurations. Some of these tables reference new Fire Protection Schemes “D”, “E”, and “F” that introduce new storage and sprinkler layouts.

第 12 章和第 16 章根据 IB、IC、II、IIIA 和 IIIB 类液体的防火测试进行了修订。 NFPA 30 表 12.8.1 对受保护的通用仓库中允许的液体容器组合进行了广泛修订。 防火测试表明，NFPA 30 第 16 章中的标准可以有效控制涉及表 12.8.1 中列出的八种新液体/储存组合的火灾。 六个新的第 16 章防火设计表规定了对液体类别（或液体）、容器和存储配置的新组合的要求。 其中一些表格引用了新的防火方案“D”、“E”和“F”，这些方案引入了新的存储和洒水器布局。

What’s going on with tanks and piping now?

NFPA 30 now indicates that either water or product can be used for ballast to protect against flooding to provide more flexibility in protecting tanks when a flood is expected. The 2021 edition also specifies the conditions under which anchorage of API 650 tanks is required to prevent sliding or overturning.

NFPA 30 现在表明，水或产品可用于压载物以防止洪水泛滥，以便在预计洪水泛滥时保护储罐提供更大的灵活性。 2021 年版还规定了 API 650 储罐需要锚固以防止滑动或倾覆的条件。

Two design standards were also added to the list of atmospheric tank standards recognized by NFPA 30 to assists code officials and users. UL142A applies to special purpose aboveground oil and day tanks, while UL 2258 applies to nonmetallic tanks for fuel oils and other combustible liquids.

NFPA 30 认可的常压罐标准列表中还增加了两个设计标准，以帮助规范官员和用户。 UL142A 适用于特殊用途的地上油罐和日用油罐，而 UL 2258 适用于燃料油和其他可燃液体的非金属罐。

A new section in the code provides requirements for metallic/nonmetallic composite piping that references two standards. UL 971A covers hybrid composite systems (pipe and fittings) for underground use and UL/ULC 1369, a new standard, addresses above ground pipes constructed with metallic, nonmetallic or composite materials.

规范中的一个新部分提供了对引用两个标准的金属/非金属复合管道的要求。 UL 971A 涵盖了用于地下使用的混合复合系统（管道和配件），而 UL/ULC 1369 是一项新标准，适用于使用金属、非金属或复合材料建造的地上管道。

This summary reflects some of the revisions in the 2021 edition of NFPA 30. As with all NFPA codes and standards, a consensus process was employed so that NFPA 30 is addressing the needs of professionals who deal with ignitible liquids.

本摘要反映了 2021 年版 NFPA 30 中的一些修订。与所有 NFPA 规范和标准一样，采用了共识流程，以便 NFPA 30 满足处理易燃液体的专业人员的需求。

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