I am involved in a shutdown project
Hi All:
I am involved in a shutdown project and where have encountered the case detailed below
- The Activity Duration is 132Hrs (12Hrs x 11 shifts) & each shift is different with different mix of resource requirements.
- Please note that I have delinked the option to calculate activity duration basing on resource assignments (Edit-User preferences-Calculations)
- After the resources are assigned as below as per the respective calendars, I find that the resource budgeted/planned hours are not being allocated shift wise rather it is distributed to the entire duration of the Activity from start to finish.
Kindly advise how to solve this case.
Time scale (Day/Shift) | Start 5/05/2011 | 6/05/2011 | 7/05/2011 | 8/05/2011 | 9/05/2011 | Finish 10/05/2011 | ||||||
Project Calender: 2 Shifts – Day (6am-6pm) & Night (6pm-6am) | Day 5 | Night 5 | Day 6 | Night 6 | Day 7 | Night 7 | Day 8 | Night 8 | Day 9 | Night 9 | Day 10 | Night 10 |
Activity 1 – Resources Required | F22+F23+R6+R7 | F22+F23+TR3+BM7 | F22+F23+R6+R7 | TR2+BM1 | TR2+BM1 |
| NDT | C1+R6 |
| F3+F4 | F22+F23+R6+R7 |
|
Resource Hours Budgeted | 48hrs (4x12Hrs) | 0 | 48hrs (4x12Hrs) | 24hrs (2x12Hrs) | 24hrs (2x12Hrs) | 0 | 12hrs (1x12Hrs) | 24hrs (2x12Hrs) | 0 | 24hrs (2x12Hrs) | 48hrs (4x12Hrs) | 0 |
Resources Legend: F - Fitter, R - Rigger TR - Trade Person, BM - Boiler Maker, NDT - Non-destructive Testing Team, C – Crane Resources Calender: 1) Day Shift (6am – 6pm) 2) Night Shift (6pm – 6am) | ||||||||||||
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The main issue is......How to
The main issue is......How to plan an activity that requires different set of resources at different shift requirements.
Split your activities in differents tasks. One resource by task, same predecessors and successors. I am planning now a shutdown and this is how we are doing it. It work fine with different calendar and shift.
Activity Definition
Vladimir is correct - you need better definition (detail) of the scope:
"Activities must be clearly defined, and should be measurable. This means anyone should be able to determine if a particular activity (as defined) is in progress, or completed.
Activities must be defined every time there is a break or change in work content, and/or by changes in the work crew. Activities that are overly broad in scope are difficult to estimate, schedule and measure/report progress against."
http://www.interplansystems.com/turnaround-project-planning-primer/defining-activities.html
Original Lag and Original
Original Lag and Original Duration fields under resource tab will serve your purpose.
Assign first resource to desired activity and then assign desired crew size to that resource. By default Primavera sets Original Lag = 0 and Original Duration = Activity's Original Duration. But in your specific case that is not true.
Let's assume you want your first resource sart at the end of first shift, then Original Lag should be 12 instead of 0. Let's assume you also want your first resource to last for one shift only, then Original Duration should be 12 instead of Activity's Original Duration.
Steps in bold can be repeated for all the resources under one activity and this will produce the results you are looking for.
Regards
Muhammad Athar Niaz
Original Lag and Original
Original Lag and Original Duration fields under resource tab will serve your purpose.
Assign first resource to desired activity and then assign desired crew size to that resource. By default Primavera sets Original Lag = 0 and Original Duration = Activity's Original Duration. But in your specific case that is not true.
Let's assume you want your first resource sart at the end of first shift, then Original Lag should be 12 instead of 0. Let's assume you also want your first resource to last for one shift only, then Original Duration should be 12 instead of Activity's Original Duration.
Steps in bold can be repeated for all the resources under one activity and this will produce the results you are looking for.
Regards
Muhammad Athar Niaz
I am involved in a shutdown project
Srinivas,
If requirements for resources change then it usually means different activity. Create more detailed schedule basing on the rule: an activity is performed by the same crew except it may be different in the day and night shift.
I don't use P6 but the rule is universal.
Best Regards,
Vladimir
I am involved in a shutdown project
Hi Vladimir,
Thank you for your response. I am using P6.7. I am currenly planning for a Plant Shutdown, Maintenance & Startup project.
The Plant Shutdown will be done during 3rd June 2011 to 15th June 2011 and there are 800 activities to be carried out during this period.
I have finished activity feeding, required columns, activity durations (in Hrs), activity codes and respective assignements. The plant works in two shits 1) Day 6am -6pm & 2) Night 6pm to 6am. I have created a 24hrs working calender with 2 shifts in that and assigned to the project.
The issue:
Resources are identified in two sets Day group and Night group. I have created two seperate resource calenders and assigned to all the respective resources as per their availability viz. Day and Night.
I have de-linked the option to calculate activity durations basing on resource assignments (Edit-User Preferences-Calculations) and started assigning resouces. The activity is made to 24Hrs calender (2 shifts), Task dependent, Fixed Duration & Units & Physical.
For instance, If activity duration is 24hrs with 2 day shifts as below
If I assign all Fitters, Riggers & Crane to this activity with the specified Budgeted or Planned Hours, I see from the Resource Usage Spreadsheet that the planned hours are distributed evenly accross the entire duration of the activity rather than required some in Day Shift 5 & Day Shift 7. How can I resolve this.
The main issue is......How to plan an activity that requires different set of resources at different shift requirements.
Kindly advise.
Srinivas
I am involved in a shutdown project
Hi Srinivas,
what software do you use?
We have no problems with modeling shift work in Spider Project.
Best Regards,
Vladimir