近期,有数起集装箱于运载过程中发生爆炸的事故报告,这些事故均与碳化钙有关。敬请贵司注意有关碳化钙,特別是当以集装箱形式时之运载。
下面是有关碳化钙在《国际危规》中的内容:
运输名称： 碳化钙
国际海事组织类别： 4.3
联合国编号： 1402
包装类别： 2
危险类别： D
根据航运验货师检验后的意见，爆炸可能是钢质桶在运输过程中摇摆产生火花及集装箱积载不恰当所导致。 下面列出的积载问题可能就是导致事故发生的原因：
发现圆桶衬垫上的垂直固定带松开了。
在每个集装箱都发现木支柱和圆桶之间的A6″-7″横向空间，没有任何防止圆桶或衬垫纵向移动的设施。
阻隔和支柱的木材最小规格应为2″x6″。另外，阻隔和支柱内侧需要有坚固的夹板舱壁，留空适当的位置查看贴在圆桶上的危险标签。
建议在第一和第二排之间使用夹板层来分隔（厚度最少是1/2”）。
部分集装箱顶部和侧面板上发现了大量水凝结现象。经过对阻隔和支柱使用的衬垫和木材进行测试，发现木材含水量达16%-28%。由于碳化钙类别4.3对水易起反应，大家应关注水分含量这一点。
某些圆桶盖的机械夹部分移位。
我们建议客户关注有关碳化钙的潜在风险, 如贵司有任何疑问请与我司或相关保赔协会寻求协助。
Caution the dangers on carriage of Calcium Carbide in container
There were several reports on the container explosion on carriage due to Calcium Carbide. We would like to draw your attention when carriage of Calcium Carbide especially via container.
IMO Class: 4.3
UN Number: 1402
Packing Group: 2
Marine Pollutant: D
According to the comment on the inspection by marine surveyors, the explosion was likely caused by a spark from the steel and improper stowage in many of the containers.
The stowage problems noted below are likely to have contributed to the incident.
Several vertical securing bands on drum pallets were found to be loose.
A 6″-7″ horizontal void space between the wood bracings and drums was found in each container, nothing was preventing the longitudinal movement of the drums or pallets.
Lumber for blocking and bracing should be a minimum size of 2″x6″. In addition a solid plywood bulkhead would be required on the inner side of the blocking and bracing with appropriate cut-outs to view the attached hazardous labels on the drums.
A plywood layer separator (minimum 1/2″ thickness) is recommended between the 1st and 2nd tier.
Substantial condensation was noted on the roof and side panels of some containers. Testing of the wood pallets and lumber used for blocking and bracing found the wood to have elevated moisture contents of between 16% and 28%. This moisture is a concern because Calcium Carbide Class 4.3 is reactive with water.
Some of drum lid mechanical clamps were found to be partially dislodged.
We suggest our Clients to be cautious and carefully to handle on Calcium Carbide product. If clients are in any doubt, please contact us or the relevant P&I Clubs for advice.
