Nick, the method we are using for c

Nick, the method we are using for checking isometrics goes as follows.

For a each isometric drawing,

1. The design conditions are checked against the line list.

2. The material for each item on the Iso BOM is checked against the code calcs. Size, wall thickness, material, fitting pressure class, flange rating, gaskets and bolts.

We used a check list to assure all the pertinent info is on the iso for the pipe shop, such as flow arrows, code stamps, spec / line breaks, container fit etc.

3. The isometric BOM is verified to show all the correct material required to build the spool is listed.

4. The isometric BOM is verified to indicate the correct shop installed or field installed material is in the proper BOM section.

The physical route of the Iso.

5. Check the iso against the P&ID and the model. If there is a discrepancy, we defer to Larry Pace for resolution. By now, the GA and setting drawings as well as the model should all be in synch.

6. Once the route is established as correct, all metric conversions are verified by hand.

7. Verify valve and instrument tags and terminal points match the P&ID,

8. You have the pipe support drawings. You can use those to verify locations and if a shop installed attachment is required and shown on the Iso BOM.

Since all equipment is in storage, the interface points should be verified. For example, make sure the downcomer connects properly to the drum and box piping. Similarly do the same for feeders to and from header to inlet / outlet piping.