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How to Convert the 1075 SCARPro from Projection to SCAR Configuration

By Theo Ewing | Jan 01, 2024 |

In this step-by-step walkthrough, Theo Ewing from our Baton Rouge Service Center demonstrates the process for switching the 1075 SCARPro from projection to contact shot configuration. Here’s how it’s done in the field.

Understanding the Dual Functionality

The 1075 SCARPro is uniquely engineered for dual-mode use. “SCAR” stands for Small Controlled Area Radiography, and the “Pro” refers to Projector Mode. The front plate can be swapped to convert modes without removing the sealed source, saving time and reducing handling risk.

Pre-Conversion Safety Check

Before attempting any adjustments:

  • Perform a radiation survey to confirm the source is fully shielded.
  • Reminder: This is a tungsten-shielded camera housed in a stainless-steel body with an external plastic jacket. Handle it accordingly.

Remove the Guide Tube

  • Turn the port cover knob downward.
  • Disconnect the cable adapter.
  • Close and index the port.

Close the Internal Tungsten Shield

  • Rotate the camera to access the dust cover (flathead cap screw).
  • Use the supplied Allen multi-tool to remove the dust cover.
  • Insert the wrench into the port labeled “Close.”
  • Gently turn until you feel slight resistance—do not over-torque. This lowers the internal tungsten block (also referred to as the internal shutter) to block the source path.

Remove the Projection Plate

  • Use the included 1/4-inch Allen wrench to loosen the three captive screws (they stay indexed to the plate).
  • Loosen the index pin.
  • Carefully remove the plate.

⚠️ Safety Interlock: The plate cannot be removed unless the internal tungsten shield is fully closed. This is a built-in safety feature to prevent accidental exposure.

Install the SCAR Collimator

  • Align the SCAR collimator with the guide pins and insert it into position.
  • Tighten the three captive screws until snug (no torque specification required).
  • Secure the index pin for the cable.

Open the Internal Tungsten Shield

  • Rotate the camera back over.
  • Insert the wrench into the port labeled “Open.”
  • Gently turn until slight resistance is felt—this reopens the path by raising the internal tungsten shield (shutter).
  • Replace the dust cover cap screw.

Your 1075 SCARPro is now ready for Small Controlled Area Radiography (contact shot) operations.

Note: This guide focuses on basic configuration procedures only. Additional safety protocols, emergency procedures, and specific regulatory requirements may apply based on jurisdiction and facility requirements. Always consult your company's radiation safety procedures, applicable safety manuals, and current regulatory guidelines for complete requirements.