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Hi everyone,
Can anyone advise me how to manage and progress some job with no relationship to each other, for example: We have 100 junction box need to check during Turnaround, and each JB need only 1 hour to check. Please advise me? THanks
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Assigning specific dates is not a Critical Path Model but a Static Gantt Chart. A better model would allow for dates to follow actual progress, a basic CPM model should do it.
Anyway if you insist on assigning specific Junction Boxes to specific resource it can be done, preferably not by fixing dates as if a Gantt chart. If you want to assign specific units to specific resources just make the assignment for volume of work fixed for teams. I do not believe in this case the use of fixed for teams is a good choice; make it a more flexible schedule. Updating inflexible plans is not easy; you can become the schedule slave instead of being the Master.
The figure shows how you can model on assigning specific Junction Boxes to specific resource without going to the extreme granularity of having a separate activity for each junction box. Each resource was assigned a volume of work of 10 boxes, a single activity, and each resource working independently as a separate team.
These are essential concepts of planning; this is how many managers make their plans, your software shall give you the tools to create models that mimic their planning.
I do not see the need for using spatial resources; it is a very simple scenario.
As soon as these resources are released by any activity [instead of a whole group of activities] within any work area they become available, they are traditional renewable resources. Just assign to each team as a multi-resource the trade resource and a separate resource to keep count of the total.
Spatial resources are not uncommon; in construction industry spatial resources can be elevated slab forms or freezing machines as in the Westerschelde Tunnel, in an offshore oil rig sleeping beds are sapatial resources.
http://www.pmknowledgecenter.com/node/104
Spatial resources are required by a group of activities, rather than a single activity as renewable resources. The spatial resource is occupied from the first moment an activity from the group starts until the finish of all activities from that group. Examples are dry docks in a ship yard or a freezing machine in the Westerscheldetunnel (see www.westerscheldetunnel.nl).
Just change the available number of spatial resources and the software will do the spatial resource leveling at a single ckick of the mouse.
Modeling of Spatial Resources is using Consumable resources is easy. Plase take a look at the following presentation Slide 37, no rocket science.
Enhanced Resource Planning from Rafael Davila
Hi
My schedule model would be based on dynamic scheduling using the tramway technique.
This what I suggest.
If it is TA scheduling model, then you have the 100 JB’s divided in the systems they belong to.
Use spatial areas for zones or area’s and define these in the systems
Link all JB’s to a milestone successor and predecessor within the systems and or the spatial resources
Make the activities resource dependent
Allocate the required resources to each activity
Set the resources availability in the resource dictionary.
Now all JB” can start at the same time because there is no logic other than the start and finish milestone.
Next step is to prioritize the JB’s within the Systems and spatial resources.
Schedule and level the resources for the JB’s activity.
Regards
Johannes
All scheduling software I know can schedule down to the hour and many to the minute. That being said it makes no sense to limit activity duration to the hour or to the minute. You shall be able to get enough granularities if you make good use of your software.
It makes no sense to create hundreds of activities and hundreds of logic links that might need to be changed is you need to change resource quantity. That would make thousands of possible combinations. If in a hurry, as most turnaround projects are, that would be insane.
Usually there is a space limitation as to how many workers can be assigned to the same activity at any given time, therefore you plan work on the same activity using shifts. Learn to plan different shifts on same activity; splitting the activity will not calculate correctly the activity duration unless you manually make the correct adjustments on every update.
A good model shall be able to automatically make the adjustments.
Cannot be any easier.
first if its a turnaround you should be scheduling down to the hour. You say that there is no logic I think that there is implied logic that you need to add. You say that you have 100 junction box need to check during Turnaround, and each JB need only 1 hour to check.
Unless you have 100 men on site at the same time checking junction boxes then there is an implied logic which is based on the number of men you have available to check the junction boxes.
So I can have 100 men on site and do everthing in 1 hour or .125 days
or I can have 50 men on site and do everything 2 hours or .25 days
or I can have 25 men on site and do everything in 4 hours or .5 days
or I can have 12 men on site and do everything in 8 hours or 1 day
or I can have 6 men on site and do everything in 17 hours or 2 days
or I can have 3 men on site and do everything in 33 hours or 4 days
or I can have 2 men on site and do everything in 50 hours or 6 days
or I can have 1 man on site and do everything in 100 hours or 13 days
this is based on an 8 hour day
In our schedules such simple scenario would be a single activity performed in several shifts, each shift with different crew composition and resources with different production rates.
We update progress through volume of work and activity duration is determined by the distribution of shifts, the resources and productivities. It is quite easy and intuitive. It is interesting to see how remaining duration is affected by how remaining volume of work is re-distributed among the shifts.
I do not use P6 but suppose you could do the same. The following image should be good enough for you to figure it out using your software, should be easy.
As I do not have P6 I would appreciate if after you figure it out you show how it is done with P6.
Good Luck.
Hi Viet,
1-I think it is important to decide whivh level you are scheduling.
example: in shut down projects , we are scheduling up to duration one hour activities, while in construction the maximum breakdown by day.
2- If there is no relation with other activity , you can use mile stone for example::
A1000 start milestone Strat in checking JB (linked with other activity accoding your method statement ,pritorization or constrains)
A1010 Task Depenant Finalizing Group 1 of JB ( 24 JB) Duration 3 days ( FS with Resonanable lage to A1000)
and the same A1020
Regards,
Email: PPadmin@planningplanet.com
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