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Piping Duration

10 replies [Last post]
Tue, 2009-03-31 02:55
Asadullah Magsi
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Is there any thumb rule for calculating piping duration??
Seprate for fabrication & erection.
or how many dia inches a welder can do per day??
and what about if spools being erected at height.
plz help me out i gys i m too young in the feiled
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Replies

Fri, 2009-04-03 01:35
#1
Asadullah Magsi
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Agreed
i m on ma way u guide
i m elaborating welding procedures,positions,ete
I also talked to welder n tried to extract some fruit
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Thu, 2009-04-02 14:12
#2
Samer Zawaydeh
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Joined: 3 Aug 2008
Posts: 1664
Groups: Civil Engineering, Regional Representatives
Dear Asadullah,

You will need to understand the process well before you plan it. I would suggest that you meet with the team working on the project and understand the process.

In General, you will need the following:

1. Fit up.
Location of the joint and the time needed to have it ready for welding.

2. Welding.
We talked briefly about it.

3. Testing.
You will need to read the specification and find out what is required; MPI, UT, RT, Hardness, Hydro, etc.

4. Treatment.
What type of finish is required and where is it going to be treated.

5. Placement.
Delivery point.

Best,

Samer
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Thu, 2009-04-02 02:20
#3
Asadullah Magsi
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Joined: 31 Mar 2009
Posts: 33
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Thanks dear
What would u recomended me for ma vision upgradation??
Any site ? any materail??
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Thu, 2009-04-02 02:15
#4
Safak Vural
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Joined: 12 May 2008
Posts: 117
Groups: Petro-Chem / Oil & Gas
Dear Asadullah,

You can look to the other post for details. My suggestion for level of breakdown for piping could come from hydrotest packages and mechanical completion system.

If the system is already on the way (Majority of hydrotest packages prepared and majority of the mechanical completion-commissioning plans prepared, you can use

-LVL 1 Discipline
-LVL 2 SYSTEM
-LVL 3 LINE
-LVL 4 Hydrotest package (Activities Pipe Fab Erec. Test. ..)

If none of the hydrotest packs or MCs are ready. If you have a preliminary quantity survey; you can go as:

-LVL1 Discipline
-LVL2 SYSTEM(If systems are not ready MATERIAL TYPE)
-LVL3 AREA-ISO
-LVL4 Just activities for Areas (Pipe Fab Erec. Test. ..)


Regards,

Safak
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Wed, 2009-04-01 22:09
#5
Asadullah Magsi
User offline. Last seen 14 years 8 weeks ago. Offline
Joined: 31 Mar 2009
Posts: 33
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We got CS 40" dia schedule 40
line.
it got around 40 joints to weld.
let say it is positioned n beveled .
ready to weld.
it is an arc welded.

Another qstion..
On what level piping to be planned.
should it be isometric sheet wise.
Exmple
Natural gas line NG012-Sht1
Natural Gas Line NG012-Sht2
Natural gas line NG013- Sht 3

Is it fair
please give me another suitable idea for piping plan
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Wed, 2009-04-01 13:57
#6
Samer Zawaydeh
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Joined: 3 Aug 2008
Posts: 1664
Groups: Civil Engineering, Regional Representatives
Dear Asadullah,

This is easy, we can work it together.

How many joints do you have?

As a planning engineer, you need to create you WBS first. Have a meeting with the senior people and divide the project into segments. And make sure that the sum of all the segments equal to the complete job that you have.

Yes, you need to spend you time at site monitoring the activities. And try to determine the number of resources available to complete the job.

Best,

Samer
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Wed, 2009-04-01 01:00
#7
Asadullah Magsi
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yes
But i m in constrction department.
my project is in erection phase
I should understand thad i must pass time with worker at site ??
means no any thumb rule to assign durations?
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Wed, 2009-04-01 00:56
#8
Samer Zawaydeh
User offline. Last seen 5 years 38 weeks ago. Offline
Joined: 3 Aug 2008
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Groups: Civil Engineering, Regional Representatives
Dear Asadullah,

I would suggest that you spend few hours in the shop each day and monitor the work.

Also check the production reports. If you do not have production reports for the weld. They you need to make one and ask your supervisors to fill it.

Steel mills have automatic ERW machines to produce pipies of different sizes.

If you are fabricating the pipes and creating structures like handrails, etc, then you are talking about a steel fabrication shop.

Best Regards,

Samer
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Tue, 2009-03-31 22:04
#9
Asadullah Magsi
User offline. Last seen 14 years 8 weeks ago. Offline
Joined: 31 Mar 2009
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Thank u so much for ur responce.
i work for tuwairqi steel mill ltd .
i m here as a planning engineer for 9 months
The problume i usually face is to assign duration to activity.like piping ,equipment or structure.]
I want to know thad is there any thumb rule for duration(Estimate)??
or it only comes by expeirence??
I need ur co operation to make ma vision broad.
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Tue, 2009-03-31 18:07
#10
Samer Zawaydeh
User offline. Last seen 5 years 38 weeks ago. Offline
Joined: 3 Aug 2008
Posts: 1664
Groups: Civil Engineering, Regional Representatives
Dear friend,

Can you give us a more clear idea about the job that you are working on.

The best measure of productivity is to monitor the workers at site for few days.

Best Regards,

Samer
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