Oil and Gas Refinery Piping Tie-In Weighted Steps

Weighted step in Primavera is an ideal function to eliminate subjective progress . What is the difference between 40% and 75% complete? It is hard to justify when you don’t have a good detail breakdown.

Here we can use the Step feature in Primavera to break down the activities for piping tie-in, each with weighted completion, Step % complete and Step weight %. It is hard to justify Tie-in progress without weighted Step as in my experience site people will estimate the progress based on their judgement.

In my previous experience, I will track piping tie-in progress in 2 ways which are through excel sheet and Primavera software. Excel sheet tracking become so useful when comes to piping supervisor level or when the site team do not have Primavera software.

It helps to keep both planner and field people at the same page when we refer to the progress as the weightage assigned tally with what we have in Primavera P6.

Each of the activity’s steps is a breakdown of all tasks required to complete the Tie-in activity. Steps can be assigned a numerical weight that shows the portion of an activity’s total work that each step represents. Weighted steps enable you to track the progress of an activity based on the number of steps completed.

Below are simple illustration on how Activity Steps in being calculation and how does it contribute to Completed Percentage.

Tie-in Tracking Sheet In Excel Sheet

Download link : http://mbx.cm/t/St10i

Steps Function in Primavera P6

Step 1: Access the project window from the activity bar

Step 2: Click on the calculations tab in the project’s details window.

Step 3: Check the activity percent complete box and answer yes to the prompt.

Step 4: Navigate back to the activities window and click on the GENERAL tab.

Step 5: Look for the use " % Complete Type” option and choose PHYSICAL.

 Step 6 : Look for "Enterprise" tab and click on "Activity Step Template".

Step 7: Add steps to the tie-in activity. In this case I will create an activity template for Tie-in which later will trigger a list of pre-defined list of step templates.

Note: When each step is completed, the activity’s percentage complete changes to reflect the completion each individual weighted step.

Step 7: Enter the relative weights for each step in the activity.

Step 8: When a step is complete, update the weighted step’s status by checking the box marked COMPLETED.

Physical % complete = weight of completed step(s)/sum of all weight.