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Measuring Welder Productivity

09/17/2009 8:54 AM

Dear all,

I am a structural production engineer working in jackup rig construction in the middle east.

In fabrication, the actual welding manhours always overrun the estimate, can any one tell me how can we measure welding productivity and measures to control productivity

I am talking about MIG,TIG, and SAW weldings

regards,

krish

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#1

Re: welding productivity measurement

09/17/2009 9:40 AM

Ask the welders how long it should take and double it. That'll get you close. If you are not talking to the welders, that's the first mistake.

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#2

Re: welding productivity measurement

09/17/2009 11:22 AM

thiere can being a list of issues.

1.) Who or what is doing the current estimating. Are they using good proceedures or are they underestimating man-hours?

2.) Is sound information going out to the welders? And if so, is the logistics there so the welders can weld, and not wait for a part to be delievered to weld.

The best to measure productivity, is with empirical information which is dirived from experience.

Bring in a welder supervisor, who has years experience welding when doing the isitial estimates. It may not even be a productivity issue with the welders but with logistics issues.

p911

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#3
In reply to #2

Re: welding productivity measurement

09/17/2009 11:55 AM

GA, I don't know how many times I've been on the job with tools in hand ready to go... only to wait for parts. Makes me look bad, but nothing I can do about it. Logistics MUST be working efficiently before any other part of the "Team" can operate at maximum efficiency.

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#4
In reply to #3

Re: welding productivity measurement

09/17/2009 12:20 PM

Having a fabrication and design business with a road crew and have worked in engineering, I experienced that welder productivity was highly dependent upon the support.

More times than not, other department inefficiencies would show up at either the assembly or when control were being installed.

I was going to post this off-topic, but it isn't.

p911

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#5

Re: Measuring Welder Productivity

09/18/2009 5:54 AM

Hi Krish

The best way is to go and have ago at welding your self and find out how time consuming a job it can be to do a proper job with all the prep work and inspection, then when you come to estimate it double your estimate you probably wont be far out

Jim

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#6

Re: Measuring Welder Productivity

09/18/2009 11:07 AM

There are two reasons. Either the estimator is basing his estimate on ideal conditions or the welders are not qualified for the job.

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#7

Re: Measuring Welder Productivity

09/18/2009 11:23 AM

You are the man on the job so why don't you set up a log of operations and keep track of your crews, procedures, time your operations, run comparisons etc. Work out these things and give yourself a baseline compare to your estimates then re quote your man hours or get better welders.

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#8

Re: Measuring Welder Productivity

09/19/2009 5:02 AM

Dear Krishnaraj,

Efficiency Of Deposition is the ratio of Weight of the welded metal to the weight of the consumed electrode.

Using the values available w.r.t to the parent metals before welding and after welding you can get the weight of the welded metal and Dividing this by the weight of the consumed electrode you get the efficiency of deposition there by You get the value per electrode if you divide by number of electrodes on proportion to the weight there by productivity.

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