where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
584 views
Career Discussions
William Blum
Consultant, Training, Level III Services
NDT Consulting Group Inc., USA, Joined Nov 2000, 89

William Blum

Consultant, Training, Level III Services
NDT Consulting Group Inc.,
USA,
Joined Nov 2000
89
08:02 Jul-20-2004
UT Thickness testing on VLCCs

Can anyone with experience on VLCCs answer these questions?

1. Can you share some experience of climbing in these tanks eg, fixing points etc.?

2. Does the vessel supply an inflatable raft in the event of tank flooding (doing readings from the raft)?

Thanks,
_________________
William Blum



 
 Reply 
 
John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 280

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
280
00:11 Aug-03-2004
Re: UT Thickness testing on VLCCs
Access issues vary greatly dependnet upon vessel design and age. Needless to say most vessels were never designed for in-service inspection access. Many internal tanks have nothing more than one access ladder and staging at one side of each tank.

Others may have internal structural steel work which provides a fixing platform for rope access technicians.

A number of specialist access companies have designed custom solutions to assist in solving these problems.

Working off rafts etc. has a number of safety issues regarding how well the tanks are cleaned and vented during operations. Also how much access you have to get a raft in through an access hatch. Working off inflatable rafts is not the most satble of platform.

Recently a lot of work is done with magnetic crawlers depending upon the type, number and distribution of measurements required to satisfy the classification society.

On double hulled tankers there may be some access through the void spaces agaion dependent upon design.

Our experienceis that ship owners want you to provide everything and do it as quickly and cheaply as possible.



 
 Reply 
 

Product Spotlight

NDTkit RT

NDTkit RT, TESTIA's Digital Radiography software The NDTkit product line software for X-ray analysi
...
s. NDTkit RT is a software benefiting from the Ultis kernel which is dedicated to radiographic image analysis. It offers a set of tools and filtering processes to assist RT operators in finding relevant flaws.
>

High-performance Linear Phased Array Probes

Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w
...
ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications.
>

Lyft™: Pulsed Eddy Current Reinvented

PEC Reinvented—CUI Programs Redefined Corrosion under insulation (CUI) is possibly the greatest u
...
nresolved asset integrity problem in the industry. Current methods for measuring wall thickness with liftoff, without removing insulation, all have severe limitations. Eddyfi introduces Lyft — a reinvented, high-performance pulsed eddy current (PEC) solution. The patent- pending system features a state-of-the-art portable instrument, real- time C-scan imaging, fast data acquisition with grid-mapping and dynamic scanning modes, and flexibility with long cables. It can also scan through thick metal and insulation, as well as aluminum, stainless steel, and galvanized steel weather jackets. Who else but Eddyfi to reinvent an eddy current technique and redefine CUI programs. Got Lyft?
>

NEOS III

NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu
...
nication, the NEOS III is perfect for users that want to quickly assess an item.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window