This article is about Inspection Test Plan (ITP) for Earthing System Installation.
Inspection Test Plan (ITP) for Earthing System Installation
| SI. No. | Description of inspection/test and production stage | Characteristics | Reference Documents | Acceptance Norms |
| 1 |
Documentation |
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| Method Statements | Execution procedures and instructions approved and uploaded in GDO. | |||
| Laboratories accreditations | Local normative, CE, ASME, etc | |||
| Design | Approved Updated Drawings | Drawings / 3D Models approved in Documental Management System. |
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| Equipments | Verification of valid updated certificates, calibration and documentations. | Normative and standards | ||
| 2 |
Material (Apply to all material) |
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| Material | Verification of material : – Material according ESP – Vendors supply the required QA/QC documents, tests and certs – Material free of damage and dirt – Handling and transport of material. – Proper storage |
GEMSS-E-26 / Technical specifications EPC Contract Applicable Law/Regulations | GEMSS-E-26 | |
| 3 |
Installation |
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| Previous Works | – Check utilities pipes or installations, if any. – Surveyer’s stakeout. |
Drawings / 3D Models approved in Documental Management System/SoilResistivity Test |
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| Positioning | – checks the correct and proper installation / positioning of the elements, coordinates, dimensions and levels. | Positioning according Drawings |
GEMSS-E-26 | |
| Bare copper cable and ground rods |
-Check proper ground rod length/location – Inspection of type, depth and laying of ground conductor (bare copper cable) |
– Technical Specification. – Drawings | – EN 13601 GEMSS-E-26 |
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| Connections | – Proper connection with Bolt, clamp (Above ground) to the ground net. – Exothermic welds (subgrade connection) executed according instruction manual of each manufacturer / verification of results welds. – Conductors free of grease, dirt and corrosion. Absence of damages/ – Earthing conductors shall be tinned when connected to galvanized steelwork. |
– Manufacture’s Instructions. – Drawings. | ´- EN 13601 – IEC 62305 – IEC 60228 |
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| Inspection Tests | – Resistivity test (the Wenner four-pin method) (Third party) | – Applicable Normative. – Third party reports giving conformity |
GEMSS-E-26 IEEE81 |
Earthing Connection to Steelwork – Earthing Installation Methods
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