--- title: "How to Perform a Misconnect Test: Safety Procedure for RSOs" description: Learn how to perform a misconnect test to meet safety regulations and avoid retrieval situations. Step-by-step guide for RSOs and qualified personnel. image: https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/How%20to%20Perform%20a%20Misconnect%20Test.webp --- ![Featured Image](https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/How%20to%20Perform%20a%20Misconnect%20Test.webp) # How to Perform a Misconnect Test: Safety Procedure for RSOs By Theo Ewing | Mar 17, 2025 | [ Gamma Radiography, ](https://www.qsa-global.com/learn/tag/gamma-radiography) [ 880 Series, ](https://www.qsa-global.com/learn/tag/880-series) [ Inspection & Maintenance ](https://www.qsa-global.com/learn/tag/inspection-maintenance) The 30-second misconnect test is a mandatory safety procedure, required by radiation safety regulations, that verifies if your radiography equipment's failsafe mechanisms are functioning properly. This guide outlines the process for performing a misconnect test prior to exposure. ## Why the Misconnect Test Matters Over time, shared wear and tear across the drive cable, safety connectors, and lock assemblies can create a dangerous scenario. If your remote controls can engage with the projector without connecting to the source assembly, you risk initiating an exposure without being able to retrieve the source. That’s not just a failure; it’s a retrieval situation. ## When to Perform a Misconnect Test QSA Global’s official guidance requires that a misconnect test be performed: - During quarterly and annual maintenance - After reloading sealed sources into the source projector - Any time new or different remote controls are paired with a source projector - Before using any radiography system that hasn't been previously tested as a complete unit ## Required Equipment - A gamma-ray source projector (such as the 880 Series, 1075 SCAR*Pro*, or SENTRY Series) - The remote control assembly that will be used during operations ## How to Perform the Misconnect Test ⚠️ Warning: Only trained, authorized personnel should perform this test. ### Prepare for Testing: Position the remote control near the source projector. Do not connect the drive cable to the source assembly. ### Attempt Connection: Bump up the remote control collar and insert the connecting plug into the projector’s locking mechanism. DO NOT connect the drive cable to the source assembly. ### Check for Rotation: ⚠️Warning: Never turn the selector ring beyond the LOCK position during testing. If you turn past the locked position without the drive cable connected to the source, you may lose control of the source assembly, creating a potentially dangerous retrieval situation. Now, try to turn the selector ring from the **CONNECT** position toward the **LOCK** position. - If you can rotate it: The system is excessively worn. The locking components have degraded to the point that the projector falsely accepts the connection. - If you cannot rotate it: The locking system is functioning properly and safe for operation. ## Understanding Component Wear Repeated use causes wear to the parts that mate the remote controls to the source projector. Over time, you may see: - Worn connector pins and pinholes - Degraded fit between collar and projector body - Retainer plate wear from contact during repeated coupling If the wear is severe enough, the controls can appear to connect, even when they haven’t engaged the source assembly. That’s exactly what the misconnect test is designed to catch. ## If the Misconnect Test Fails 1. Immediately remove the source projector from radiographic operations 2. Label it as out of service 3. Do not use the system again until it has been repaired and successfully retested 4. Contact a QSA Global service center for assistance ## Conclusion The misconnect test is a simple safety check that takes only 30 seconds to perform. By conducting this test, you ensure safe radiographic operations and help to prevent serious retrieval or exposure incidents. Remember, at QSA Global, we're committed to your safety and success. Our equipment is designed with multiple safety features, but routine testing and inspections are critical to maintaining that protection over time. *Note: This guide focuses on basic misconnect test 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.* Share: ## Related Posts - [![Related Post Image](https://www.qsa-global.com/hubfs/Blog%20Photos.png)](https://www.qsa-global.com/learn/the-importance-of-maintaining-your-co-60-sources) ### [The Importance of Maintaining Your Co-60 Sources](https://www.qsa-global.com/learn/the-importance-of-maintaining-your-co-60-sources) Cobalt‑60 (Co‑60) exposure devices used in industrial radiography are engineered for long‑term operation and reliability. While many devices and ... [Read Article](https://www.qsa-global.com/learn/the-importance-of-maintaining-your-co-60-sources) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/%232%20Daily%20Inspection%20880%20Series.jpg)](https://www.qsa-global.com/learn/daily-inspection) ### [Daily Gamma Radiography Equipment Inspection: A Step-by-Step Guide](https://www.qsa-global.com/learn/daily-inspection) Daily equipment inspection is a crucial safety requirement before performing gamma radiography. Both Agreement State and NRC regulations mandate ... [Read Article](https://www.qsa-global.com/learn/daily-inspection) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/Operating%20Instructions/How%20to%20change1075%20SCARPro%20Projection%20to%20Contact.webp)](https://www.qsa-global.com/learn/1075-projection-to-scar) ### [How to Convert the 1075 SCARPro from Projection to SCAR Configuration](https://www.qsa-global.com/learn/1075-projection-to-scar) In this step-by-step walkthrough, Theo Ewing from our Baton Rouge Service Center demonstrates the process for switching the 1075 SCAR*Pro* ... [Read Article](https://www.qsa-global.com/learn/1075-projection-to-scar) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/How%20to%20Perform%20a%20Leak%20Test.webp)](https://www.qsa-global.com/learn/how-to-leak-test) ### [How to Perform a Leak Test on Your Gamma-Ray Source Projector](https://www.qsa-global.com/learn/how-to-leak-test) Performing a leak test on your gamma radiography projector is a required part of maintaining compliance with NRC and Agreement State regulations. ... [Read Article](https://www.qsa-global.com/learn/how-to-leak-test) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/howto%20calculate%20exposure%20time.webp)](https://www.qsa-global.com/learn/calculating-exposure-time) ### [Calculating Exposure Time in Gamma Radiography: A Comprehensive Guide](https://www.qsa-global.com/learn/calculating-exposure-time) Learn how to calculate exposure time in gamma radiography with this comprehensive guide. Discover the factors that affect exposure time and the ... [Read Article](https://www.qsa-global.com/learn/calculating-exposure-time) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/gamma-ray%20source%20projector%20survey.webp)](https://www.qsa-global.com/learn/perform-radiation-survey) ### [How to Perform a Radiation Survey on a Loaded Gamma Projector](https://www.qsa-global.com/learn/perform-radiation-survey) If you’re handling a gamma projector, be it coming in through your transport or coming off the rig onto the job site, the first thing you should ... [Read Article](https://www.qsa-global.com/learn/perform-radiation-survey) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/%236-How%20to%20Drive%20Cables%20-%20frame%20at%200m22s.jpg)](https://www.qsa-global.com/learn/how-to-inspect-drive-cables) ### [How to Inspect Drive Cables: A Field-Ready Guide for NDT Techs](https://www.qsa-global.com/learn/how-to-inspect-drive-cables) Drive cables take a beating. Between setup, teardown, transport, and exposure to rough site conditions, they're one of the first components to ... [Read Article](https://www.qsa-global.com/learn/how-to-inspect-drive-cables) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/How%20to%20Perform%20a%20Guide%20Tube%20Inspection.webp)](https://www.qsa-global.com/learn/inspect-guide-tubes) ### [How to Inspect Guide Tubes: A Field-Ready Guide for NDT Techs](https://www.qsa-global.com/learn/inspect-guide-tubes) Routine inspection of guide tubes and collimators helps prevent source retrievals and ensures equipment remains safe and functional. The steps ... [Read Article](https://www.qsa-global.com/learn/inspect-guide-tubes) - [![Related Post Image](https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/How%20to%20Inspect%20880%20Series%20Components.webp)](https://www.qsa-global.com/learn/component-inspection) ### [How to Inspect Projector Components for Safety and Compliance](https://www.qsa-global.com/learn/component-inspection) A crucial part of your role as a radiographer is to ensure your equipment functions safely and remains in compliance with certification ... [Read Article](https://www.qsa-global.com/learn/component-inspection) ![](https://px.ads.linkedin.com/collect/?pid=5603804&fmt=gif) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Theo Ewing", "url" : "https://www.qsa-global.com/learn/author/theo-ewing" }, "dateModified" : "2026-05-07T17:51:12.771Z", "datePublished" : "2025-03-17T13:45:00.000Z", "headline" : "How to Perform a Misconnect Test: Safety Procedure for RSOs", "image" : [ "https://www.qsa-global.com/hubfs/2024/Blog/Inspection%20Maintenance/How%20to%20Perform%20a%20Misconnect%20Test.webp" ], "mainEntityOfPage" : { "@id" : "https://www.qsa-global.com/learn/how-to-perform-a-misconnect-test-safety-procedure-for-rsos", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.qsa-global.com/hubfs/QSA_Logo_Web.png" }, "name" : "QSA Global, Inc." } } ```