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High explosive unexploded ordnance neutralization - Tallboy air bomb case study
Defence Technology ( IF 5.0 ) Pub Date : 2021-03-17 , DOI: 10.1016/j.dt.2021.03.011
Rafał Miętkiewicz 1
Affiliation  

On October 13, 2020, on the fairway connecting the Polish Baltic ports of Świnoujście and Szczecin, an underwater hazardous object of historical origin in the form of the British deep penetration bomb Tallboy dropped during the bombing of the German cruiser "Lützow" in April 1945 was neutralized successfully. It is believed to be the first underwater action concerning this type of bomb, which has previously been neutralized on land in Europe (Germany, one confirmed case). The preparation of the operation, on an unprecedented scale at national, European and global level, took one year and included a series of projects related to clearing the space around the bomb from other identified UXO objects, international consultations, historical analyses, determination of the risk to residents and critical infrastructure in the event of an explosion of the bomb containing approximately 2400 kg of the TORPEX explosive (with an increased force equivalent to almost 3600 kg of TNT). The object was neutralized on spot at the depth of 12 m, near a ferry crossing, by specialists from the 41st Navy EOD Team from the 12th MCM Squadron (8th Coastal Defence Flotilla), using the Low Order Deflagration technique (underwater deflagration method). In the case discussed, there was an accumulation of unfavourable conditions which practically excluded the use of blow-in-situ explosive methods (BIP), as well as the extraction of the object and its transport to a military ground. After a partial deflagration of the explosive, the explosive was detonated (DDT). Estimates indicate that the deflagration level reached between 55 and 60%, which significantly reduced the strength and effects of the underwater explosion.



中文翻译:

高爆未爆弹药中和 - Tallboy 空气炸弹案例研究

2020 年 10 月 13 日,在连接波兰波罗的海港口 Świnoujście 和 Szczecin 的航道上,一个具有历史渊源的水下危险物体以英国深穿透炸弹Tallboy的形式出现在 1945 年 4 月轰炸德国巡洋舰“Lützow”期间掉落的飞机被成功中和。这被认为是针对此类炸弹的第一次水下行动,该炸弹此前已在欧洲陆地上被中和(德国,一个确诊病例)。该行动的准备工作在国家、欧洲和全球层面以前所未有的规模进行,历时一年,包括一系列项目,包括从其他已识别的 UXO 物体上清除炸弹周围的空间、国际磋商、历史分析、确定如果装有约 2400 公斤 TORPEX 炸药(增加的力量相当于近 3600 公斤 TNT)的炸弹爆炸,居民和关键基础设施将面临风险。该物体在 12 m 深度被当场中和,在渡口附近,来自第 12 MCM 中队(第 8 海防舰队)的第 41 海军 EOD 小组的专家使用低阶爆燃技术(水下爆燃方法)。在所讨论的案例中,不利条件的积累实际上排除了原位爆炸方法(BIP)的使用,以及物体的提取和运输到军事基地。在炸药部分爆燃后,炸药被引爆(DDT)。估计表明,爆燃水平达到了 55% 到 60% 之间,这显着降低了水下爆炸的强度和影响。在所讨论的案例中,不利条件的积累实际上排除了原位爆炸方法(BIP)的使用,以及物体的提取和运输到军事基地。在炸药部分爆燃后,炸药被引爆(DDT)。估计表明,爆燃水平达到了 55% 到 60% 之间,这显着降低了水下爆炸的强度和影响。在所讨论的案例中,不利条件的积累实际上排除了原位爆炸方法(BIP)的使用,以及物体的提取和运输到军事基地。在炸药部分爆燃后,炸药被引爆(DDT)。估计表明,爆燃水平达到了 55% 到 60% 之间,这显着降低了水下爆炸的强度和影响。

更新日期:2021-03-17
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