Thats brilliant, many thanks chaps.
I am trying to get agreement from them for a wirtten instruction for actions in the event the system circulation pump fails they maintain a minimum line pressure using the static head in the storage tanks.
Many thanks for this, I did talk to them about pressure testing ( and vacuum testing although prefer former for obvious reasons). The system has multiple off loading points all of which are easily accessible.
I will see if i can convince them of the need for this
again, many thanks
Brian
Sir,
I have never heard of collecting rain water before on any ship. I cannot imagine its relevance to CLean Class notation as well which is more about environmental impact.
On tankers during cargo ops you may have scupper plus in which are periodically removed to drain off rain water so that...
Chaps,
My company is supplied with Potable water through a system which includes 6" pvc pipe line of a few 100m or so which is burried in reclaim land so the soil is quite sandy.At either ends the PVC pipe is connected to Stainless steel manifolds and branch sections.
I asked about inspection...
The ring rotation also evens out wear on the ring and prevents hot spots.
FYI, on large slow speed engines you can have fitted ring wear measuring equipment. using this you can actually see the rings wandering around.
On one medium speed engine design not only to the rings rotate but the...
The dynamic and hydrodynamic effects are substantially greater than the overload rating.
An example, for around a 15 tonne lift the various effects ( including passing the load through a moonpool and thereby having significant water column issues, can lead to a proof load testing( 5 year...
It carries a fixed load which may be considered the SWL. The design load of the system utiilises this fixed load and incorporates a factor of safety based upon dynamic and hydrodymanic effects on the load
I would assumme four deployement per day, 200 days per annum
many thanks for responses.
It is the accumulative load/fatigue issues that is of concern as some of the systems being tested are 30 Years old plus.
The tests are at 1.25 every 6 months and 1.5 every 12 months SWL.
I have been allowed to make an argument to remove frequent (6 monthly) overload testing on a class of Lifting equipment. This would have a very significant impact ( I believe positive) on a large industry sector.
As a lead into this I am looking for examples where such overload testing lead to...
many thanks for your replies. These are in align with my own thoughts. I have contacted anouther major rope manufacturer and they are also in agreement with what you say. I have read several documents pertaining to Mine Lift Ropes which has recognised such as the importance of d/D ratios against...
No, I am with your Superintendent.
Cunifer is great for sea water systems but for a survivability ( impact for example) I would go with steel. If you want it to last you can use schedule 80 or use one of the many internal coatings that are now available and not at great cost. Done right...
Fuel Oil (Heavy and IMO) - Flash point -safety, you need to know if it will off gas when heated or whilst in storage
Viscosity - combustion- you need this to set your viscosity meter ( non feedback)
You will need as assurance of correct bunker type
Lubrication -Flash Point Contamination (...
For a system utilising Bosch type scoll pumps Its casued by increased spill, there is a pulsation damper in the spill line that should be removing this effect. I imagine this is much reduced with Constant High pressure systems
In a meeting to discuss discard criteria of Steel Wire Ropes a Rope Manufacturer suggested that the frictional heating effects of ropes formed from multiwire overlays subject to cyclical bending would lead to a reduction in service life due to other than fatigue.
Whilst aware that the wire...
The most recognised standard is the SFI. you need to by a licence ( which is the book) but costs very little tyy www.spectec.net
Note that the code is designed to provide a frame work which you modifiy to suit your needs.
We use it for use it for equipment Hierachy, Document control, Drydock...
Many thanks for your prompt replies
Yes it is supposed to be greased but there was evidence of this
The bearing in which it runs appears to be a brass/bronze and has dimples which match the humps.
We do not believe that there are no additional bits that have disappeared although there are no...
We have a failure of a swivel arrangement which sits in a load path of a derrick.
The fauilure takes the form of material loss from the journal surface (dia abt 150mm) leaving being a very uniform patten of hemispherical lumps which one assumes must have been related to some fabrication or...
