Ultrasonic Wall Thickness Measurements

Ultrasonic wall thickness measurements allow an excellent overview about the status of the ship´s hull. For that reason, such measurements are frequently made to determine the exact status already before docking, and to estimate required steel renewals on the basis of such measurements.

Wall thickness measurements are frequently possible already during the ship´s voyage, and are very cost effective. We would be glad to prepare are proposal for you.

The table below shall give you a first overview and serve as an example about the potential scope of measurements during the ship´s voyage.

  Container Vessel Bulk Carrier

10 years 15 years 10 years 15 years

Transverse section* X X X X
Wind and water strake**   O O O
Hatchcover and coamings   X X X
Fore and aftpeak tank*   X X X
Selected blkh´s in C/H´s***   X    
Exposed main deck plating   X    
All deck plating incl. under deck structure
in way of hatch openings
    X X
One webframe ring in each WBT and DB*     X  
All Webframe rings in each WBT and DB*       X
Forw. and aft blkh.
In one selected side ballast tank*
    X  
All bulkhead´s in WBT and DB*       X
Aft blkh. C/H no.1 accr. IACS UR S19 ***     X X
All C/H blkh´s incl. upper and lower stools***     X X
All shellframe in C/H no.1 accr.
IACS UR S31***
    X X
25% of shellframes in each remaining C/H***     X  
50% of shellframes in each remaining C/H***       X
50% of shellframes in each remaining C/H
when tonnage is exceeding 100.000t***
    X  
Gauging at bottomshell and seachest O O O O

What can be finished during the voyage?
WBT, deckpl., hatchcover and coamings up to 100% if accees is granted
     
C/H on bulk carriers - lowerpart of shellfr. blkh.-stool and innerbottom***


X - Gauging during the voyage or at port stay
O - Gauging in dry dock

* Access to ballast tanks must be arranged by sufficient deballasting and ventilation
** Shall be carried out in ship yard with basket crane
*** Except lower and upper stools, cargo hold´s must be free of cargo and no cargo operation durig UTM staging and / or basket crane might be necessary

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Ultrasonic Wall Thickness Measurements
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D-27711 Osterholz-Scharmbeck

Fon: +49 (0) 4795 24 888 00
Fax: +49 (0) 4795 24 888 11

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