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Is Pipe tunnel an enclosed space?

Posted: Tue Apr 28, 2020 12:01 pm
by Jameseze24
During safety meeting onboard ship, chief mate said pipe tunnel is not an enclosed space as it has exist from forward and aft.

But to my understanding, I disagree with such, because may contain toxic gas, since bunker tank, ballast tanks and valves are all in connection. Provision of ventilation as he said, doesn't makes it a Sami enclosed space. Moreover, on tanker ships, ventilation is also provided in pump Room. Please share your opinions base on the topic.

Re: Is Pipe tunnel an enclosed space?

Posted: Thu Apr 30, 2020 12:54 am
by Merlyn
Don't know your location in the world but here in UK the legal definition of "pipe tunnel " is as follows:-
"The void space running in the mid ships fore and aft lines between the inner bottom and shell plating forming a space for ballast, bilge and/or fuel lines"
I take it the mid ships statement is used as a reference point only.
Little bit confusing perhaps but you have to remember that court case outcomes for potentially millions of pounds are decided on the interpretation of the act and how they can be argued in a court of law.
So for me anyway the key words here might be " running in the midships fore and aft lines " which I take to be stood in the void amidships looking fore and aft.
So your chief mate has omitted the key word " in the midships " .
Bit confusing methinks perhaps.
Mr Warsila endorses this.
So I rest my case your honor.

Re: Is Pipe tunnel an enclosed space?

Posted: Thu Apr 30, 2020 4:03 am
by JK
From Canadian MOSH regulations the definition of an enclosed space is:

confined space means an enclosed or partially enclosed space that

(a) is not designed or intended for human occupancy, except for the purpose of performing work;

(b) has restricted means of access and egress; and

(c) may become hazardous to any person entering it owing to

(i) its design, construction, location or atmosphere,

(ii) the materials or substances in it, or

(iii) any other conditions relating to it. (espace clos)

Part 14 covers specifics ... index.html

Re: Is Pipe tunnel an enclosed space?

Posted: Sun May 03, 2020 10:51 am
by Jameseze24
I think, I'm right. I'm in UAE, same roles. But where he got the definition as a semi-enclosed space is what I don't know.

Re: Is Pipe tunnel an enclosed space?

Posted: Thu May 21, 2020 9:33 pm
by rodrigger
pipe tunnel aka duct keel, is definitely an enclosed space. Old cargo ship I worked on 35 years ago had one, had an entrance with a quick opening hatch at the focsle which led you down a vertical ladder to the belly of the ship. Exit was a bolted up hatch on the fwd ER bulkhead. Nest of piping for bunkering, tank ballasting, cargo bilge etc etc ran in there to/from the engine room. I was a 5th engineer and most of my time spent patching up (famous plastic steel putty and clamp fix) leaking bunker pipe (heavy oil) whenever we took bunker . I always exited/entered the keel via the engine room because I feared falling from the vertical ladder .

Re: Is Pipe tunnel an enclosed space?

Posted: Sat May 23, 2020 8:39 am
by Big Pete
I would say that although the Pipe Tunnel Duct keel has access at both ends it would still be regarded as an enclosed space, because leaking fuel etc can fill the space with flammable / Toxic Gases and corrosion taking place could deplete the Oxygen levels.

However, if it is fitted with a supply fan at one end and an exhaust fan at the other and these are always kept running, to ensure that there is continuous mechanical ventilation of the spaces, then I would NOT regard it as an enclosed space. However, you need to know that the fans are running all the time and nobody is switching them off to save fuel or because they are noisy.

Big Pete