关于救生艇吊架负荷试验的问题 麻烦各位大神了

bazyu

RT，单位的救生艇为吊架可回收自由抛落式。 救生艇吊架要做2.2倍静负荷试验，这个2.2倍负荷是挂在回收的吊臂上呢，还是斜滑道上呢 ？     救助艇吊架做过，但救生艇架还真没做过。感觉应该放在斜滑道上，吊臂毕竟要求只能boat with 3 peoples 起升。具体怎么个做法望ABS啦，DNV啦，LR啦，GL啦等等大神们告知，十分感谢！
   这个2.2倍的要求在哪里有规定呢？  以及上船安装之后是否需要做？ 还是工厂需要做的？

kissiopo

LSA上应该有吧 第VI章 降落与登乘设备

清扬风

一般而言，这个2.2SWL静负荷试验是工厂出厂前产品检验时必须要做的，新造船检验时候船级社一般都不会要求再次做，因为已经有了 救生艇吊架的产品证书了。

qianbo

如果有要求做，一般都是将回收吊臂放到最大限度，然后将2.2倍的重块挂在吊臂端部，静载5分钟即可

bazyu

十分感谢！~~

MIKEYSON

回复 3# 清扬风


    我所碰到的船厂验船师都要求做

冷笑天2008

是不是2.2倍忘了，但是艇架确实放到最大位置后，重块受力。

ttww0527

放在最顶端的横臂上。

BRACKET

For a free-fall lifeboat launching appliance, each launching ramp and its connection to the release mechanism should be tested with a static load of 2.2 times the working load. The appliance should not be deformed or damaged. For free-fall lifeboats it should be demonstrated that the survival craft can be recovered to its stowage position and can be safely and properly secured.  It should be demonstrated that adjustable ramps for free-fall launching may be adjusted satisfactorily with the free-fall lifeboat loaded to 1.2 times its related load. The launching appliance shall be designed and arranged so that in its ready to launch position, the distance from the lowest point on the lifeboat it serves to the water surface with the ship in its lightest seagoing condition does not exceed the lifeboat’s free-fall certification height, taking into consideration the requirements of paragraph [url=mkMSITStore:C:\Program%20Files\Lloyd]4.7.3[/url].

4.7.3 Performance requirements

4.7.3.1. Each free-fall lifeboat should make positive headway immediately after water entry and shall not come into contact with the ship after a free-fall launching against a trim of up to 10° and a list of up to 20° either way from the certification height when fully equipped and loaded with:

.1. its full complement of persons;

.2. occupants so as to cause the centre of gravity to be in the most forward position;

.3. occupants so as to cause the centre of gravity to be in the most aft position; and

.4. its operating crew only.

4.7.3.2. For oil tankers, chemical tankers and gas carriers with a final angle of heel greater than 20° calculated in accordance with the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto and the recommendations of the Organization [url=mkMSITStore:C:\Program%20Files\Lloyd]see footnote [/url]as applicable a lifeboat shall be capable of being free-fall launched at the final angle of heel and on the base of the final waterline of that calculation.

bazyu

BRACKET 发表于 2013-4-4 13:32
For a free-fall lifeboat launching appliance, each launching ramp and its connection to the release  ...

大神     这个只是说要做2.2    没说上船后也要做2.2吧   

qingzhuyan

大神。。。。。。。。。

周周周周周周

问下，这个2.2倍是指的艇架的SWL还是，空艇的重量加上属具重量和额定人员重量

邓崇映

2.2倍一般都是厂家做，船厂只做1.5倍的静态，将吊臂伸出去，挂载1.5倍负荷静止悬停5分钟，动态负荷1.1倍！