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SOLAS学习笔记:SOLAS II-2 第 9 条 7.3 挡火闸与导管贯穿的细节

  • 2026-03-27 10:15:34
SOLAS学习笔记:SOLAS II-2 第 9 条 7.3 挡火闸与导管贯穿的细节

SOLAS II-2  9  7.3 款通过对导管贯穿不同等级分隔的细致规定,以及对挡火闸操作性能的严格要求,构建了船舶内部防火分隔的最后一道防线。这些细节规定是保障船舶在火灾中能够有效遏制火势蔓延、为人员疏散和灭火行动争取宝贵时间的关键。

一、 穿过 “A” 级分隔的导管要求 (7.3.1)

“A” 级分隔是船舶上耐火性能最高的结构,因此对穿过它的导管要求极为严格,具体规定根据导管的有效横截面积划分:

1. 小截面薄壁导管(≤0.02 m²)

  • 要求:开口处必须装设钢套管

  • 规格:套管厚度至少为 3mm,长度至少为 200mm

  • 布置:若穿过舱壁,套管在舱壁两侧的长度各约 100mm;若穿过甲板,则套管应整体位于甲板的底侧。

2. 中等截面通风导管(0.02 m² < 面积 ≤ 0.075 m²)

  • 要求:开口处必须衬有钢套管

  • 规格:导管和套管的厚度均至少为 3mm,长度至少为 900mm

  • 布置:若穿过舱壁,套管在舱壁两侧的长度各约 450mm

  • 隔热:导管或其套管必须覆盖耐火隔热物,其耐火完整性至少应与所穿过的 “A” 级分隔相同。

3. 大截面导管 (> 0.075 m²)

  • 要求:必须装设自动挡火闸

  • 位置:挡火闸应靠近所贯穿的分隔安装。

  • 材质:挡火闸与分隔之间的导管必须由钢制成。

  • 操作:挡火闸应能自动关闭,同时也能从分隔的两侧手动关闭,并装有可视指示器以显示其开关状态。

重要例外与禁止

  • 如果导管穿过被 “A” 级分隔包围的处所但不服务于这些处所,且导管本身具有同等耐火完整性,则无需设置挡火闸

  • 严禁为了规避挡火闸要求,将大截面导管在贯穿处拆分为多个小截面导管,穿过分隔后再合并。

二、 穿过 “B” 级舱壁的导管要求 (7.3.2)

对于穿过 “B” 级舱壁且有效横截面积超过 0.02 m² 的通风导管:

  • 要求:开口处应衬有钢板套管

  • 规格:套管长度为900mm,在舱壁两侧各延伸约 450mm

  • 例外:如果在此长度范围内的导管本身就是钢质的,则无需额外加装套管。

三、 挡火闸的通用操作要求 (7.3.3)

所有挡火闸,无论其安装位置如何,都必须满足以下操作规范:

  • 手动操作:所有挡火闸均应能手动操作,可通过直接机械方式释放,或通过电力、液压、气压等方式关闭。

  • 双侧操作:所有挡火闸必须能从分隔的两侧进行手动操作,确保在紧急情况下,无论身处哪一侧都能关闭。

  • 故障安全设计:自动挡火闸(包括遥控型)必须具备故障安全设计。这意味着,即使在火灾导致电力、液压或气压动力丧失的情况下,挡火闸也能自动关闭,确保安全。

  • 现场开启:遥控操作的挡火闸,必须能在其安装位置被手动开启,以满足维护和测试需求。

注:本文为 SOLAS II-2  9 条 7.3款的核心要点梳理,仅作船舶行业学习参考使用。船舶在设计、建造、检验及运营的全过程中,需严格遵循 SOLAS 公约原文、主管机关的相关规定以及船舶具体技术规范。

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  1. CONNECT:[ UseTime:0.000991s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001481s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000791s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000704s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001328s ]
  6. SELECT * FROM `set` [ RunTime:0.000608s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001462s ]
  8. SELECT * FROM `article` WHERE `id` = 477764 LIMIT 1 [ RunTime:0.001526s ]
  9. UPDATE `article` SET `lasttime` = 1774729723 WHERE `id` = 477764 [ RunTime:0.002125s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000611s ]
  11. SELECT * FROM `article` WHERE `id` < 477764 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000944s ]
  12. SELECT * FROM `article` WHERE `id` > 477764 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001259s ]
  13. SELECT * FROM `article` WHERE `id` < 477764 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001463s ]
  14. SELECT * FROM `article` WHERE `id` < 477764 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003547s ]
  15. SELECT * FROM `article` WHERE `id` < 477764 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003402s ]
0.202881s