As this is general piping arrangement drawings therefore the dominant lines should be the pipework. Equipment outlines should be lighter. Information that is not relevant to the pipework arrangement (e.g. floor grating, stairs) should be deleted. The information is difficult to read on an A0 print due to clashes between text and equipment outlines.
Reflected.
A B
Pőyry Comment Two(2) x 500MW Mong Duong 1 Thermal Power Plant Project
Dwg. / Doc. Title HDEC DT No. Pőyry TR No. New HDEC DT No. Status
Submitted Date Received Date MD1-HDH-EVN-X-3177 Re-Submitted Date 18.04.2013 Rev. Received for Information – Returned with Comments
No.
Pőyry’s Comments
1
Drawing title shall be added “Auxiliary Boiler Package” before general piping arrangement drawing.
A B
Contractor’s Reply / Action Reflected.
Poyry Comment on Rev B: Closed. 2
As this is general piping arrangement drawings therefore the dominant lines should be the pipework. Equipment outlines should be lighter. Information that is not relevant to the pipework arrangement (e.g. floor grating, stairs) should be deleted. The information is difficult to read on an A0 print due to clashes between text and equipment outlines.
Reflected.
Poyry Comment on Rev B: Closed. 3
It is difficult to differentiate between leader lines identifying the pipes and the actual pipes.
Reflected We will make noticeable line for actual pipes.
Poyry Comment on Rev B: Closed. 4
Cross reference drawings should be added for main equipment and steelwork.
Reflected.
Poyry Comment on Rev B: Closed. 5
Piping arrangement of each system or combination of some systems together should be developed from these general arrangement drawings to provide clear enough information for piping installation.
Installation details are shown in the attached 3D model drawing.
Poyry Comment on Rev B: There is no 3D model drawing as stated.
Basic piping sectional drawing is possible to check in the 3D modeling, but is difficult to separate detailing. After drawing the complete clash of the pipe installation and operation in the site, there is no problem. Page 1 / 2
No. 6
Pőyry’s Comments
Contractor’s Reply / Action
Section drawings to be provided.
Installation details are shown in the attached 3D model drawing.
Poyry Comment on Rev B: There is no 3D model drawing as stated. Section drawings are also required.
Basic piping sectional drawing is possible to check in the 3D modeling, but is difficult to separate detailing. After drawing the complete clash of the pipe installation and operation in the site, there is no problem.
Poyry Comment on Rev C: The comment was misunderstood. The reason for asking 3D model drawing was based on your statement “Installation details are shown in the attached 3D model drawing”. However, there was not any attached 3D drawing. Your reply to be revised suitably if there is not 3D drawing. Section drawings (2D) are required together with these plan views for enough information of pipe arrangement. Particularly, at the intersection points. The requirement is to have sufficient drawings for operation and maintenance of the plant. Section drawings that indicate pipe elevations and demonstrate clearances are part of a package of pipework arrangement drawings 7
Poyry Comment on Rev B: Lines should be identified using KKS identifiers.
Reflected.
Poyry Comment on Rev C: Closed. 8
Poyry Comment on Rev B: Terminal points should be identified.
Reflected.
Poyry Comment on Rev C: Closed. 9
Poyry Comment on Rev B: Correct the KKS identifiers for the boiler steam drums (AC not AG).
