Method Statement Title: Testing of Lightning Protection System
1.0 Scope
1.1 Testing of Lightning protection system in accordance with the requirements of Specification 16950.
2.0 Material
- Copper tapes and accessories.
- PVC Insulated cables ( between down conductors)
3.0 Method
3.1 Testing equipment
4.1.1 Earth tester.
4.1.2 Continuity tester.
The calibration certificates of testing instruments will be verified for validity prior to use.
- Inspections
- Physical Checks : Physical checks will be conducted to ensure the following as per specification.
- Check the proper jointing of copper tapes and its connection with the down conductor.
- Check the proper jointing of cable installed to link down conductors and earth electrode.
- Clean and tighten all the joints.
- Earth electrode resistance check
a. Remove the lightning protection system continuity conductor connection from the earth electrode and measure the earth electrode resistance by using earth tester.
b. All the earth values will be tabulated and submitted for consultants review.
- Continuity Test
a. Continuity test will be carried out to ensure the continuity between lightning protection conductor at the selected points and the earth electrode by using a multimeter.
b. Values of the above tests will be tabulated and submitted for consultants review.
- Corrective Actions
If the measured resistance is found to be higher than the specified value (i.e. <10 ohms) the Engineer will be notified and recommendations will be agreed to lower the resistance.
4.0 Records
- Test results in the attached format.
- Inspection request raised for consultant to witness testing.
5.0 Attachments
- Earth electrode testing format
5.2 Pre-commissioning check list