EasyManua.ls Logo

Mirion Technologies GEM-5 User Manual

Default Icon
443 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
GEM-5
Gamma Exit
Contamination Monitor
MAN-GEM5 Rev.01 User’s Manual

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Mirion Technologies GEM-5 and is the answer not in the manual?

Mirion Technologies GEM-5 Specifications

General IconGeneral
BrandMirion Technologies
ModelGEM-5
CategoryMonitor
LanguageEnglish

Summary

1. Introduction

Features

Overview of the GEM-5 Gamma Exit Monitor's key attributes, including sensitivity, detectors, shielding, computer integration, and operational capabilities.

Safety First

Covers electrical safety precautions, over-current protection, grounding, environmental considerations, and ingress protection standards.

2. Installation - First Use of System

Preparation and Handling

Guidelines for recommended storage locations, in-service placement, unpacking, and handling of sensitive components.

Installation Procedures

Details on installing lead ingot bricks, ramps, and relocating the monitor after initial setup.

Hardware Review and Connections

Overview of monitor hardware, electrical connections, computer box details, display screen, and detector review.

Model Selection and Configuration

Procedure for selecting the correct model and configuring operational settings for the monitor.

3. Principle of Operation

Operating Modes and States

Explains Normal Service, Background Initialization, Ready, Position, Monitor, Clean, Contaminated, and Out of Service modes.

Krypton Mode

Details operation in environments with periodic high background conditions, such as Krypton presence.

Alarm Test Procedures

Covers the facility's alarm test protocol for verifying system alarms at the release limit setting.

4. Unit Setup

F9 – Plateau Plot

Allows graphing detector count rate vs. high voltage, used for initial testing and operation.

HV Setting for Gamma Scintillation Detectors

Procedure for determining high voltage settings for optimum detector performance using FOM technique.

F8 – Discriminator Plot

Used to adjust discriminator level for individual detectors for normal operation and diagnostic tool.

F1 – Optimize Gamma HV

Procedure to determine high voltage settings for optimum signal-to-noise ratio for PMT-based detectors.

Calibration Requirements for Contamination Monitors

Explains the necessity of calibration, isotopes used, and the calibration process.

5. Parameters Definition

Service Menu and Basic Operations

Starting point for setup, testing, calibration, printing, and diagnostics, with access to various functions.

F1 – Place In Normal Service

Returns the unit to normal monitoring mode and handles background initialization.

F1 – Place in Conditional Service

Allows monitor to return to service with some detectors missing or failed, pending replacement.

F1 – Place in No Database Conditional Service

Enables operation without database support if SOFT-LDB is installed and enabled.

F1 – Place in Krypton Mode Service

Allows monitor to operate in environments with periodic high background conditions.

F2 – Test Menu

Provides access to routines for checking system performance and adjusting settings.

F3 – Setup Menu

Used to set operating parameters and configure various other items like common values and detection zones.

6. Diagnostics/Maintenance

Using Test Screens

Overview of the common 'look and feel' of test screens and general key functions.

F2 – Test Menu Operations

Details accessing and using the Test Menu for monitor functions, detectors, and settings.

Faults and Error Handling

Describes the Faults screen, identifying diagnostic information for detection zones and system components.

Maintenance and Event Logs

Covers the Maintenance Log and Recent Event Log features for tracking service and operational events.

7. Retrieving Information

F5 – Information Menu

Provides access to databases for monitoring results, performance, service records, and graphical displays.

F6 – Printout Menu

Allows printing or saving data from Information Menu screens and other performance data.

Appendix A Algorithms

Probability Theory

Discusses radioactive decay, statistical fluctuations, and describes Binomial, Poisson, and Gaussian distributions.

Counting Statistics

Explains confidence levels, standard deviation calculation, and probability functions in counting statistics.

Efficiency Calculation (and Derived Efficiencies)

Details calibration procedures, source locations, and formulas for calculating sum zone efficiencies.

Appendix B Operating Files and Directory Structure

Basic Structure

Describes the main program executable and Dynamic Link Library (DLL) files in the D:\MonitorProgram\ folder.

Custom Files

Lists files within the D:\MonitorProgram\CUSTOM\ folder, noting administrator privilege requirements for changes.

Driver Files

Lists driver files required for system operation, including CSB.sys and Setup_Csb.exe.

SetupTXT Files

Contains language-specific Dynamic Link Libraries (DLLs) for various interface languages.

Settings Files

Details internal settings files (*.df) maintained in the D:\MonitorProgram\SETTINGS directory.

Setup Menu Configuration Files

Describes configuration files for Setup Menu items like Common Values, Detection Zones, and Group Settings.

Appendix C Special Information

Alarm Test vs. Occupant Alarm Scenarios

Compares Alarm Test mode results versus Occupant Alarms for two specific cases.

Initial Setup and Self Shielding

Provides guidance on initial setup procedures and understanding self shielding effects on background.

Appendix E Further Information

Numeric Notation

Explains Engineering and Scientific notation choices for displaying values in setup menus.

Special Character Codes

Provides keyboard codes for entering European accented characters and special symbols.

Support for Non-US Keyboards

Details system support for non-standard key issues with specific keyboards like the SL 75 OEM USB FRENCH.

Appendix F Specifications – Standard Models

Operating Modes

Describes the three designed operating modes: Walkthrough, Pause-and-count, and Two-step.

Alarms

Details separate alarm zones for feet, body, head, and alarm level settings.

Parameter Setting

Explains entering parameters like alarm levels, fixed/variable count times via keyboard.

Occupant Specifications

Specifies height and weight limits for users being monitored by the unit.

Radiological

Covers radiation detected (Gamma) and typical efficiencies at various source/detector distances.

Detector Types

Lists detector types used in GEM-5, including scintillator detectors.

Mechanical Specifications

Details mechanical aspects like handling, cabinet construction, dimensions, and weights.

Electronics and Computer

Describes the computer system, including processor, RAM, OS, storage, and ports.

Appendix G Specifications – Options

(ID) Card Reader Options

Details reader and mounting hardware for ID readers used with Sirius, GEM-5, and Cronos monitors.

CRemote Option (SCN 7062263)

Describes Centralized Remote Control and Data Access Software for monitoring and archiving.

Local Database Support Option

Provides a data repository for the monitor program using Microsoft SQL Express Edition.

Access Control Options

Details doors, gates, turnstiles (barriers) interlocked with software for personnel movement control.

Appendix H Component Details – Standard Models

General Description

Overview of the self-contained PC-based system, electronics modules, and FPGA usage.

Detectors

Details on Gamma Scintillation Detectors, including physical dimensions, PMT, and optical interface.

Detector Boards

Describes detector boards, their connectors, functionality, and LED indicators.

Board Settings

Explains how to change the Board ID switch SW1 for proper detector board setup and function.

Appendix I Component Details – Options

Auxiliary Sensor Board (SCN 816696)

Details the Auxiliary Sensor Board, its FPGA programming, and sensor/switch input settings.

Appendix J Routine & Preventative Maintenance – Standard Models

Routine and Preventive Maintenance

Recommendations for maintaining monitor reliability, including checks on electronics and detection equipment.

Cleaning Procedures

Guidelines for cleaning the monitor, including computer fans, LCD screen, and general daily cleaning.

Decontamination Procedures

Steps for decontaminating monitor surfaces, including dry and wet methods.

Detector Repair and Replacement

Procedures for handling detectors, photomultiplier tubes, and detector boards, including return for repair.

Scintillation Detectors Removal

Detailed steps for removing floor pan, vertical panels, roof cover, and detector assemblies.

Sensor Setup and Types

Explains sensor types (motion, photoelectric, background suppression) and their setup.

Appendix K Preventative Maintenance – Options

Barrier Arms Option

Covers installation, adjustment, and maintenance of the barrier arms option.

DC Motor Controller for Access Control Options

Details the DC motor controller, its operation modes, safety features, and technical characteristics.

Appendix M Spare Parts Lists – Standard Models

GEM-5 Spare Parts

Lists spare parts for GEM-5 for construction/commissioning (1-2 years) and operation (3-5 years).

Spare Parts As Needed

Lists spare parts categorized as 'as needed', including keys, power switches, and cam-locks.

Appendix N Spare Parts Lists – Options

Barrier Arms Spare Parts

Lists spare parts for the Barrier Arms option, intended for up to five years of operation.

Appendix O Block Diagrams – Standard Models

GEM-5 General Arrangement

Provides a general arrangement diagram for the standard GEM-5 model.

GEM-5 Serial

Presents the serial block diagram for the GEM-5 monitor.

Appendix P Block Diagrams – With Options

GEM-5W93 General Arrangement

Shows the general arrangement block diagram for the GEM-5W93 model.

GEM-5W100 General Arrangement

Provides the general arrangement block diagram for the GEM-5W100 model.

GEM-5W80-W93-W100

Presents the block diagram for the GEM-5W80-W93-W100 configuration.

Appendix Q WebRemote

WebRemote Overview and Features

Introduces WebRemote software, its features, requirements, and screen descriptions.

Web Browser Connectivity and Status Monitoring

Explains connecting to monitors via LAN or direct link using a web browser for status monitoring.

Prerequisites for WebRemote

Outlines hardware and software requirements for installing WebRemote, including touch screen kit and storage.

Computer Model and Software Upgrade

Details computer models and their XP Embedded Runtime versions for WebRemote compatibility.

Installation of WebRemote, Monitor 9.0 (or above) , and DashBoard

Provides instructions for installing WebRemote, Monitor 9.0+, and DashBoard software.

DashBoard Status Monitoring

Explains how to monitor the status of multiple contamination monitors via a remote PC or tablet.

Plan Your Network Connection

Recommends using static IP addresses for contamination monitors on LAN or direct link connections.

How to Assign a Static IP

Step-by-step guide for assigning a static IP address in Windows 7 Operating System.

How to Use WebRemote

Provides a quick summary and detailed instructions on using the WebRemote interface.

Related product manuals