Earthing or Grounding Layout is a drawing to show location of electrical devices and metal structured to
be earthed. It also indicates earthing conductor loop and location of earthing electrodes. This checklist will be an aid to maintain quality design of earthing layout.
Read more: List of All Checklists
| No. | Done | Checked Items |
|---|---|---|
| 1 | | Verify Client Name |
| 2 | | Verify Project Title |
| 3 | | Verify Drawing Title |
| 4 | | Verify Drawing No. & Revision No. |
| 5 | | Verify Job No. (Project No.) |
| 6 | | Verify reference drawing numbers and titles. |
| 7 | | Are notes and legends correct? |
| 8 | | Is Match Line indicated correct next drawing numbering? |
| 9 | | Is the latest piping plot plan drawing referred to? |
| 10 | | Is the scale appropriate to size of the drawing? |
| 11 | | Are the size of characters suitable for size and scale of the drawing? |
| 12 | | Are the type and width of lines suitable for size and scale of the drawing? |
| 13 | | Is the location identification of the plant shown on the drawing indicated by North mark, reduced key plan, etc.? |
| 14 | | Incorporated equipment per mechanical equipment list |
| 15 | | Incorporate clean earth inputted by instrument discipline. |
| 16 | | Check the number of grounding electrode per requirements. |
| 17 | | Check all electrical equipments are grounded and all non-electrical equipment/skid are bonded to steel structure or grounded. |
| 18 | | All motors, welding outlets, lighting / receptacle panels, local control stations and other electrical equipment enclosures are connected to earthing system. |
| 19 | | All tanks, vessels, and towers are connected to main earthing system |
| 20 | | Steel structures/pipe racks are bounded to nearest earthing system. |
| 21 | | Power cable trays/ducts are connected to earthing system. |
| 22 | | All electrical equipment inside substation building are properly connected to main earthing grid. |
| 23 | | Check the grounding wire size per requirements. |
| 24 | | Check the provision of lightning protection per code/standard and regulation. |
| 25 | | Check the material requirement for lightning protection per code/standard and regulation. |
| 26 | | Check the Specification and size of wires |
| 27 | | Check the Wiring method |
| 28 | | Check the Items to be grounded |
| 29 | | Check the Wiring route depth of wire and etc. |
| 30 | | Check the Location of grounding electrodes, well/inspection well |
| 31 | | Check the Interface with others discipline (Piping, Instrument, Structure etc.) |
| 32 | | Check the location of each air terminal suitable for the protection of each objects. |
| 33 | | Check the lightning conductor provision per requirement. |
| 34 | | Check the location of lightning arresters. |
| 35 | | Check the location of lightning earth. |