Fluke Victoreen 875 Operator's Manual
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Fluke Victoreen 875 Operator's Manual

Fluke Victoreen 875 Operator's Manual

High range containment monitor
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Victoreen
875
High Range Containment Monitor
Operators Manual
February 2005
Manual No. 877-1-1 Rev. 9
©2004, 2005 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies

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Summary of Contents for Fluke Victoreen 875

  • Page 1 ® Victoreen High Range Containment Monitor Operators Manual February 2005 Manual No. 877-1-1 Rev. 9 ©2004, 2005 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies...
  • Page 2 Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 120 Andrews Road Hicksville, New York 11801 516.870.0100 www.flukebiomedical.com/rms...

  • Page 3: Table Of Contents

    Table of Contents Section 1: Introduction....................1-1 General Description ..................1-1 Specifications....................1-1 Equipment Overview..................1-3 Receiving Inspection..................1-8 Storage ......................1-9 Procedures, Warnings, and Cautions ............1-9 Section 2: Installation....................2-1 Installation....................2-1 Cable and Wiring Installation ............... 2-3 Section 3: Operation....................
  • Page 4 Appendix A: Calibration and Test Procedures..............A-1 Calibration Procedures ................A-1 Test Procedures ..................A-1 Appendix B: Cable and Pull Box Procedures..............B-1 Cable and Pull Box Procedures ..............B-1 Appendix C: Applicable Drawings and Bill of Materials..........C-1 Applicable Drawings ..................C-1 Bill of Materials ....................C-3...

  • Page 5: Introduction

    Introduction General Description Section 1 Introduction 1.1 General Description Containment Monitor 875 NOTE The 875 Containment Monitor has been qualified for use in Nuclear Safety related applications. Qualification Test Reports, 950.301, 950.308A, and 950.310A define the parameters that have been verified by test and are available for purchase.
  • Page 6 (0.28 molar H , 3000 ppm Boron, and NaOH; ph of 11, 24 hrs LOCA Test Duration 28 days (Consult Fluke Biomedical, Radiation Management Services, for a complete description of Qualification Test Results) Readout Module 876A-1 Range 1 to 10 Input Current Minimum: 6.5 to 7.5 x 10...

  • Page 7: Equipment Overview

    Introduction Specifications Relative Humidity (Storage): 0 to 95% (non- condensation) Relative Humidity (Operating): 0 to 90% (non- condensation) over Irradiation: 3.5 to 1 x 10 Rads @ 60°C integrated 40 years life. Mounting 876-1-55, Rack Chassis Available Options (consult factory) 876A-100: Readout, for use with digital systems Outputs: 100 mV...
  • Page 8 Victoreen 875 Operators Manual Pull Box Assembly (878-12-5) The 878-12-5 Pull Box Assembly is designed to allow for thermal expansion of the detector cables and to provide a service loop. Various optional pull-box configurations are available per Table 1-1. For more information refer to Section 2, Appendix B, and Appendix C.
  • Page 9 Introduction Equipment Overview Figure 1-1. High-Range Containment Monitor 875...
  • Page 10 Victoreen 875 Operators Manual Figure 1-2. Typical Energy Response Curve – Detector 877-1...
  • Page 11 Introduction Equipment Overview Figure 1-3. Typical Linearity Detector 877-1 Figure 1-4. Radiation Input vs. Meter Reading (Calculated Curve)

  • Page 12: Receiving Inspection

    Upon receipt of the unit: 1. Inspect the carton(s) and contents for damage. If damage is evident, file a claim with the carrier and notify Fluke Biomedical, Radiation Management Services at 440.248.9300. 2. Remove the contents from the packing material.

  • Page 13: Storage

    Biomedical. It shall be the owner’s or user's responsibility to see to it that the procedures described here are meticulously followed, and especially that WARNINGS and CAUTIONS are heeded. Failure on the part of the owner or user in any way to follow the prescribed procedures shall absolve Fluke Biomedical and its agents from any resulting liability.
  • Page 14 Victoreen 875 Operators Manual (Blank page)

  • Page 15: Installation

    Installation Installation Section 2 Installation 2.1 Installation Installation of the monitoring system consists of selecting suitable mounting sites for each component of the system, mounting each of the components, and connecting the components into the system configuration. Installation of this system is as follows: NOTE Refer to the applicable drawings in Appendix C for further installation Instructions.
  • Page 16 Victoreen 875 Operators Manual NOTE Under potential L.O.C.A. conditions of pressure and temperature, the cable may expand as much as 11 inches per 100 feet. The distance from the pull box to the detector will be determined by the amount of flex hose used to seal the detector cables.

  • Page 17: Cable And Wiring Installation

    Readout Module 876A-1. Terminal block connections and unshielded center conductors are not acceptable for installation. Fluke Biomedical recommends that cable 50-103 be used. Typical wiring is shown on drawing GEL 875-1. After installation, testing is required as described in the previous paragraph.
  • Page 18 Victoreen 875 Operators Manual Thickness 0.015 inch (0.38 mm) nominal Outer Diameter 0.217 inch (5.51 mm) nominal Impedance 75 ohms nominal Capacitance 22 pf/ft nominal Ancillary Wiring Ancillary wiring for computer, recorder, power and alarm contacts are installed according to drawing GEL 875-1 and Table 2-1 which indicates connector pin designations.

  • Page 19: Operation

    Operation Operation Section 3 Operation 3.1 Operation Once installation is completed, operation is fully automatic. The 876A-1 Readout Module continuously indicates the level of radioactivity measured at the detector site. When the radiation level exceeds an alarm set point, an alarm is actuated. The following steps explain how to operate the 875 monitor: 1.
  • Page 20 Victoreen 875 Operators Manual alarm level. Return the module to its proper position in the rack. Tighten the rear holding screws. Tighten the knurled holding knob on the front. Return the module to service. During normal operation, the radiation field is usually less than 1 R/h (the lower limit of detection of the high range detector) and the analog meter display will be at the low end of the meter scale.

  • Page 21: Function Description

    Function Description Functional Description Section 4 Function Description 4.1 Functional Description High-Range Containment Monitor Detector 877-1 The high-range containment monitor detector is an ion chamber detector that has the appearance of a six-inch diameter domed cylinder about seven inches long, mounted on an L shaped bracket. Inside the cylinder are two flange-mounted electrodes consisting of 31 flat, disk-shaped plates, each about four inches in diameter, stacked, and mounted on disk rods.
  • Page 22 Victoreen 875 Operators Manual PreamplifierIMeter Printed Circuit Board (P/N 876A-1-86, Schematic 876A-1-3E) The detector current, measuring from 7 x 10 to 7 x 10 amperes respectively, at the bottom and top of the reading range, enters the readout on rear panel connector J1. From the rear panel, the ion chamber current enters the preamplifier circuit through terminal J302.
  • Page 23 Function Description Readout Module876A-1 High Voltage Power Supply Normal Operation (non-ECS Test) The multivibrator circuit of Q7 and Q8 also supplies the input to the high voltage generator. Two of the transistors of U1 act as buffers between the multivibrator and the high voltage circuit. Q4 and Q3 serve an output driving stage for the primary of high voltage transformer T1.
  • Page 24 Victoreen 875 Operators Manual PreamplifierIMeter Board Power Supply (P/N 876-1-86, Schematic 876-1-3E) A +6.2 V power supply contained on the preamplifier meter board has as its input the +15 V from the power supply board. Integrated circuit U401, pins 12, 13, and 14 is a voltage regulator with diode U402 providing a stable reference voltage.
  • Page 25 Function Description Readout Module876A-1 There is a yellow ALERT ALARM jumper connected to the collector (pin 1) of the alert alarm relay driver stage of U503. The following options are available with the presence or absence of the jumper when the radiation level exceeds the threshold and triggers the alarm: Manual Reset - The alarm will continue to be activated even after the radiation level recedes below threshold until the SAE/RESET indicator push button on the panel is depressed.
  • Page 26 Victoreen 875 Operators Manual The pen clamp circuit is a clamping circuit consisting of U501, pins 8, 9 and 10 and diode CR502. It prevents pin 9 from going negative. The purpose of this is to prevent the recorder pen from being jammed against the baseline.
  • Page 27 Function Description Readout Module876A-1 NOTE During the ECS test, all alarms are muted; that is, their operation is disabled until the completion of the test. During this six-second period there is no warning of a high radiation condition. If this situation is not tolerable, two containment monitors must be installed.
  • Page 28 Victoreen 875 Operators Manual high voltage ramp. The overall circuit that monitors the ECS test also includes U2, described with the power supplies; and the SAFE/FAIL circuit on the relay driver printed circuit board. Ultimately, by the action of R218, the charge integration adjustment potentiometer (CHARGE INTEG. ADJ.), charging capacitor C209, and other auxiliary elements, a DC voltage is produced on terminal 10 of U201, and an output voltage on pin 8 which results in an input to pin 10 of U208 which will be approximately zero if the system is operative, and approximately + 15 V it a malfunction is present, or on...
  • Page 29 Function Description Readout Module876A-1 Safe/Reset Sub-circuits The three sub-circuits described below are all involved in the operation of the green SAFE/RESET lamp and its associated alarm: 1. A latch for the SAFE/RESET lamp built around four NOR circuits of integrated circuit U202, with several auxiliary elements.
  • Page 30 Victoreen 875 Operators Manual (Blank page)

  • Page 31: Maintenance, Calibration, And Troubleshooting

    Detectors shall either be returned to Fluke Biomedical at a five (5) year interval from the date of delivery or the owner must establish a procedure to determine that the average A/R/h output current does not deviate from original factory calibration by more than ±...
  • Page 32 Low range 140 VAC, high-range 280 VAC Frequency 60 Hz 4 ½ Digit Digital Multimeter Fluke 8600A or equivalent Ranges + 0 to 100 mV up to + 0 to 100 V (20% over-range) 100 mV range: ± (0.05% of input ± 0.02% of range) Accuracy all other ranges: ±...

  • Page 33: Troubleshooting

    The troubleshooting procedure that follows is a guide to isolating a fault in the system. Replacement of parts is at the printed circuit board level only. Printed circuit boards must be returned to Fluke Biomedical for service. There are two self-contained system tests available in Containment Monitor 875, the Channel Test and the ECS Test.

  • Page 34: Power Supply Measurements

    Victoreen 875 Operators Manual 5.4 Power Supply Measurements (P/N 876-1-89 Schematic 876-1-3C) Turn the 876A-1 on by turning the function switch to the ALL position. CAUTION Allow all equipment, including the readout module, to warm up for at least 60 minutes before attempting any calibration.

  • Page 35: Metering Circuit

    Maintenance, Calibration, and Troubleshooting Signal Input Circuit TP501 +5 V -2.8 V TP502 -1.5 V +6.3 V These voltages are approximate and actual values may differ somewhat. Any marked departures from these values is an indication of a malfunction. 5.6 Metering Circuit (P/N 876A-1-3E, Schematic 876A-1-92) The signal circuit that drives the meter is U401 (Figure 5-2).

  • Page 36: High Alarm Circuit

    Victoreen 875 Operators Manual *Normal here signifies a small radiation signal so that the voltage at TP502 is close to zero volts. NOTE Both of the solenoids of the alert and high alarm circuits must operate for the CHANNEL TEST lamp to light.

  • Page 37: Esc Board

    Maintenance, Calibration, and Troubleshooting Muting Stages of the Alarm Circuits Conversely, during the ECS Test muting is definitely wanted, and the +12 V on pin 9 can easily overcome the +2 V on pin 10. 5.10 ESC Board (P/N 876A-1-92, Schematic 876A-1-3D) The wave-shapes shown in Figure 5-1 should be sufficient for localization of malfunction on the ECS board.
  • Page 38 Victoreen 875 Operators Manual CONN CONN 0203 Figure 5-1. Wave Shapes on the Electronic Check Source Board...

  • Page 39: Overall Fail Circuitry Associated With The Ecs Test

    Maintenance, Calibration, and Troubleshooting Overall Fail Circuitry Associated with the ECS Test 5.11 Overall Fail Circuitry Associated with the ECS Test Because the ECS Test involves circuits on the switch printed circuit board, power supply printed circuit board and relay driver printed circuit board, as well as those on the ECS printed circuit board, a fairly detailed study of this overall circuitry has been included.

  • Page 40: Outputs Of U206 Pulse Generator On The Ecs Board

    Victoreen 875 Operators Manual 2. An auxiliary pulse from pin 3 of U208 to the automatic pulse generating circuits resets them so that an automatically generated pulse will be present 17.1 minutes later if the ECS Test is not conducted manually during that time. The purpose of this pulse is to insure continued operation of automatic testing.
  • Page 41 Maintenance, Calibration, and Troubleshooting Operation of Latch Circuit U202, pins 1, 5, L (Enable pulse active; i.e. low) From these conditions, the following must hold true. Comment Depends on 6 Depends on 2 Further analysis is contained in the truth table (Table 5-2). Figure 5-2.
  • Page 42 Thus the circuit does not react to a fail signal input unless pins 1 and 5 are low. NOTE If a problem cannot be resolved by applying the troubleshooting maintenance procedures provided here, please contact Fluke Biomedical at 440.248.9300 for assistance. 5-12...

  • Page 43: Appendix A: Calibration And Test Procedures

    Appendix Calibration and Test Procedures Appendix A Calibration and Test Procedures A.1 Calibration Procedures Document Number Description CAL877-1 High Range Detector 877-1 Calibration REPORT 877 Calibration of Model 877 to 3.0 MeV The calibration and data listed above is for reference only and need not be performed. A.2 Test Procedures Document Number Description...
  • Page 44 Victoreen 875 Operators Manual (Blank Page)

  • Page 45: Appendix B: Cable And Pull Box Procedures

    Appendix Cable and Pull Box Procedures Appendix B Cable and Pull Box Procedures B.1 Cable and Pull Box Procedures Document Number Description CABLE-877 HRCM Cable Termination and Installation Procedure 878-12-3 High-Range Containment Monitor Pull Box Cover Installation Procedure...
  • Page 46 Victoreen 875 Operators Manual (Blank page)

  • Page 47: Appendix C: Applicable Drawings And Bill Of Materials

    Appendix Applicable Drawings and Bill of Materials Appendix C Applicable Drawings and Bill of Materials C.1 Applicable Drawings Document Number Description GEL876-1-55 Rack Chassis & Recommended Seismic Mtg. GEL876A-1 Readout Module Dimensional Outline GEL875-1 Interconnection Diagram High-Range Containment Monitor GEL-877-1 High-Range Detector &...
  • Page 48 Victoreen 875 Operators Manual 876-1-3G Schematic, PC Board 876A-1-40 Front Panel Assembly 876A-1-41 Meter Assembly 876A-1-3H Schematic (Block Diagram.) Final Assembly 92-9015-A AC Line Filter 877-1-5 Detector Assembly 877-1-81 Containment Area Detector Assembly 877 -1-80 Detector Mounting Flange Assembly 877-1-17 Wall Mounting Bracket 878-1-5 Detector Cable Assembly...

  • Page 49: Bill Of Materials

    Appendix Applicable Bill of Materials C.2 Applicable Bill of Materials Document Number Description 875-1 876A-1 Readout with 877-1 Detector 876A-1 High-Range Containment Monitor Readout 876-1-55 Rack Chassis 876A-1-108 High-Range Containment Monitor Readout Assembly 876A-1-Kit Mating Connector Kit for 876A-1-108 876A-1-86 Preamp Meter PC Board Assembly 876-1-100 Preamp Shield Assembly...
  • Page 50 Fluke Biomedical Radiation Management Services 6045 Cochran Road Cleveland, Ohio 44139 440.498.2564 120 Andrews Road Hicksville, New York 11801 516.870.0100 www.flukebiomedical.com/rms...

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