关于SOLAS公约中提到防撞舱壁阀门问题

boaod · 发表于 2011-1-20 23:26

本帖最后由 boaod 于 2011-1-20 23:38 编辑

大虾们，SOLAS公约中规定2009年1月1日之后建造的船舶，防撞舱壁阀门用球阀，并需要配备远程控制装置。
然而，目前许多船厂送审原理图上这个位置的阀门都是遥控蝶阀，大部分船级社都认可，可是DNV却提出这个问题，请问是否一定需要球阀？

牙牙1974 · 发表于 2011-1-21 08:35

偷听一下！

陈士元 · 发表于 2011-1-21 08:40

目前我们这还没这样要求，只是说开敞甲板便于到达操作，阀体材料不能是铸铁。

dabaomarine · 发表于 2011-1-21 09:23

我们做的DNV的船也是用的遥控蝶阀，现场验船师没什么疑义啊？

jhx009 · 发表于 2011-1-21 10:04

5.1 Except as provided in paragraph 5.2, the collision bulkhead may be pierced below the bulkhead deck
by not more than one pipe for dealing with fluid in the forepeak tank, provided that the pipe is fitted with a
screw-down valve capable of being operated from above the bulkhead deck, the valve chest being secured
inside the forepeak to the collision bulkhead. The Administration may, however, authorize the fitting of
this valve on the after side of the collision bulkhead provided that the valve is readily accessible under all
service conditions and the space in which it is located is not a cargo space. All valves shall be of steel, bronze
or other approved ductile material. Valves of ordinary cast iron or similar material are not acceptable.

yzhang2010 · 发表于 2011-1-21 12:20

回复 1# boaod

这是SOLAS规定？有依据吗？

live743 · 发表于 2011-1-21 20:56

我们新送审的图纸，船级社就提出了此阀必须为screw-down valve，并说是SOLAS要求

wangyongqi · 发表于 2011-1-21 23:11

SOLAS2009新的是要求用screw－down型式的阀，一般而言如果是小口径的阀用小轴传动装置在主甲板上操作，而一般如果大口径的就的用液压的型式了，现在大多数设计都是用的液压蝶阀，多数船级社是认可的，但是就这一问题存在很大的争议，老的SOLAS里面强调的是suitable valve而新的明确了screw－down，并且现状是大多数船用液压的蝶阀并没有出现什么大的问题。就这个问题IMO和IACS都没有出过官方的解释只有IMO下面的SUB-COMMITTEE ON STABILITY AND LOAD LINES AND ON FISHING VESSELS SAFETY 有过一个解释：
Discussions on valve type

5 Considering the following situations, IACS can not find a strong reason to prohibit the
use of butterfly valves for this purpose.

(1) Butterfly valves have been widely used for this purpose and no serious casualties
caused by a damage or failure of the valve have been reported.

(2) Piping is usually designed so that progressive flooding through it cannot occur by
a single damage or failure. For example, ballast piping is fitted with valves at the
pump side and the boundaries of each tank, if served for other tanks.

(3) Butterfly valves have been widely used in overboard discharge pipes, which are
required to have more stringent integrity.

(4) Valves of other types having larger sizes necessary for tank operations of larger
ships are not available in the market.

(5) IACS is not aware of any record/evidence of discussion justifying the change of
requirements noted in paragraph 2, above. SLF 51/3/4 - 4 -

6 Accordingly, IACS considers that, unless some justification for the use of screw-down
valves can be provided, butterfly valves provide a means as effective as a screw-down valve to
ensure the integrity of pipes piercing the shipís collision bulkhead below the bulkhead deck.

51-3-4.pdf (162.68 KB, 下载次数: 112)

sjwang · 发表于 2011-1-24 14:51

船级社就是提点意见，不会有啥解决方法，你可以回复他，满足要求就可以了

zhuangrong · 发表于 2011-1-25 11:02

把我搞糊涂了，差点被忽悠了

marinetime · 发表于 2011-3-9 08:51

8楼出了个高手

关于SOLAS公约中提到防撞舱壁阀门问题

评分