To determine the cause of a short on an insulated flange, an insulation tester can be used to check the resistance between ________.

To determine the cause of a short on an insulated flange, using an insulation tester to check the resistance between the flange halves and each bolt is essential for evaluating the integrity of the insulation. This method helps identify whether there is a pathway for electrical current that bypasses the insulation, which could indicate a short.

When measuring the resistance between the flange halves and each bolt, you assess if any electrical connection exists that shouldn’t be there, which would compromise the insulation. If there is a low resistance reading, it suggests that the insulation is failing, allowing current to flow between conductive parts of the system instead of maintaining separation.

This approach is critical in pipeline corrosion control since insulated flanges are designed to prevent galvanic corrosion by isolating different sections of a pipeline. Regular testing of the integrity of the insulation helps maintain the effectiveness of the corrosion control measures in place.