Productivity records for offshore

By sahraian Date 04-11-2006 06:39

Does anybody know ?

1-What is the rate of productivity for SMAW welders for offshore structures(topside and jacket) ?How many kg of electrodes (with dia 3.25 , 4 and 5 mm) per shift(10 hours )should a welder deposit . Or alternatively , how long is the arc time for a normal welder per shift ?

2-How many dia-inch a GTAW welder should weld for offshore piping per shift (10 hours).
BR
Sahraian@sp68.com

By TimGary (****)

Date 04-11-2006 11:32

IMHO...

Welder productivity rates, Electrode Kg per hour, inches of weld per hour, etc. etc are great tools for data collecting in environmentally controlled factories.
Anybody that tries to use these methods offshore is in for a headache.
There are far too many variables that affect welder productivity offshore.

Tim

By comcam6 (*)

Date 04-12-2006 09:02

hi
Operating factor is the percentage of a welder’s working day that is actually spent welding. It is the arc time in hours divided by the total hours worked. When using coated electrodes, (SMAW) the operating factor can range from 15%-40% in onshore depending upon material handling, fixturing and operator dexterity. If the actual operating factor is not known, an average of 30% may be used for cost estimates when weld- ing with the shielded metal arc welding process.
When welding with solid wires (GMAW) or metal cored welding (MCAW) using the semi-automatic method, operating factors ranging from 45%-55% are easily attainable. Use 50% for cost estimating purposes but i havnt heared any whee this amount would change in offshore and onshore!

i think this would help you:

http://www.esabna.com/euweb/AWTC/Lesson9_14.htm

Shokravi