Fluke Victoreen 875 Operators User manual

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

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

i
Table of Contents
Section 1: Introduction................................................................................................ 1-1
1.1 General Description ..................................................................................... 1-1
1.2 Specifications............................................................................................... 1-1
1.3 Equipment Overview.................................................................................... 1-3
1.4 Receiving Inspection.................................................................................... 1-8
1.5 Storage ........................................................................................................ 1-9
1.6 Procedures, Warnings, and Cautions .......................................................... 1-9
Section 2: Installation.................................................................................................. 2-1
2.1 Installation.................................................................................................... 2-1
2.2 Cable and Wiring Installation ....................................................................... 2-3
Section 3: Operation.................................................................................................... 3-1
3.1 Operation ..................................................................................................... 3-1
Section 4: Operation.................................................................................................... 4-1
4.1 Functional Description ................................................................................. 4-1
4.2 Readout Module 876A-1.............................................................................. 4-1
Section 5: Maintenance, Calibration, and Troubleshooting..................................... 5-1
5.1 Maintenance ................................................................................................ 5-1
5.2 Calibration.................................................................................................... 5-1
5.3 Troubleshooting ........................................................................................... 5-3
5.4 Power Supply Measurements ...................................................................... 5-4
5.5 Signal Input Circuit....................................................................................... 5-4
5.6 Metering Circuit............................................................................................ 5-5
5.7 The Alarm Circuits ....................................................................................... 5-5
5.8 High Alarm Circuit........................................................................................ 5-6
5.9 Muting Stages of the Alarm Circuits............................................................. 5-6
5.10 ESC Board................................................................................................... 5-7
5.11 Overall Fail Circuitry Associated with the ECS Test .................................... 5-9
5.12 Starting with Pins M and P on the Power Supply Schematic ....................... 5-9
5.13 Starting with Terminal H on Relay Driver Board .......................................... 5-9
5.14 Provision of Inputs to Terminals M and P on the Power Supply Board........ 5-9
5.15 Outputs of U206 Pulse Generator on the ECS Board................................ 5-10
5.16 Operation of the Latch Circuit .................................................................... 5-10

ii
Appendix A: Calibration and Test Procedures..............................................................A-1
A.1 Calibration Procedures ................................................................................ A-1
A.2 Test Procedures .......................................................................................... A-1
Appendix B: Cable and Pull Box Procedures................................................................B-1
B.1 Cable and Pull Box Procedures ................................................................... B-1
Appendix C: Applicable Drawings and Bill of Materials...............................................C-1
C.1 Applicable Drawings ....................................................................................C-1
C.2 Bill of Materials ............................................................................................C-3

Introduction
General Description 1
1-1
Section 1
Introduction
1.1 General Description
Containment Monitor 875
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.
Containment Monitor 875 functions as an accident monitor for reactor containments, refer to Figure 1-1. It
consists of the 877-1 Ion Chamber Detector that is located within the reactor containment, and the 876A-1
Readout Module that is contained in a rack in the control room. The readout module contains a power
supply that provides the necessary power both for itself and the detector. The readout module is
connected to the detector by two cables, a coaxial high voltage cable and a coaxial signal cable.
Specifications for the detector and readout module are contained below.
1.2 Specifications
Detector 877-1
Radiation Detected Photons above 60 keV
Range 1 R/h to 1E7 R/h
Energy Response ±20% from 80 keV to 2 MeV
Chamber Construction Stacked parallel plate, 316 stainless steel housing, 3
terminal, guarded ion chamber
Saturation >80% up to full scale on instrument
Collection Voltage 450 to 550 VDC
Current Output 7E-11 to 7E-4 Amp/R/Hr (nominal)
Chamber Capacitance 435 picofarads (nominal)
Voltage Withstand and Leakage 5E10-5 amperes @ 500 VDC between either ground and
connector pins
Capacitance Approximately 430 pf
NOTE

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1-2
Hermetic Integrity 1E10-5 cm3of helium per second @ one standard
atmosphere
Chamber Fill Gas Nitrogen/helium (2%) at atmospheric pressure
Dimensions (W x H x D) with Mounting Bracket 9.25 x 12.5 x 10.06 in
(234.95 x 317.5 x 255.52 mm)
Weight Approximately 18 lb (8.17 kg)
Temperature, Storage 40° to 160°F (4° to 71°C)
Temperature, Operating 40° to 160°F (4° to 71°C)
375°F (180°C) peak, accident, 3 hours
Relative Humidity 100% (waterproof)
Total Integrated Dose 2E8 Rads + 10% margin, 60Co
Chemical Spray 0.45 Gallons/minute/ft2(0.28 molar H3BO3, 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 107R/h
Input Current Minimum: 6.5 to 7.5 x 10-11 A
Maximum: 6.5 to 7.5 x 10-4 A
Recorder Output 0 to +1 VDC, logarithmic (0 - 10 mV and 0 – 5 V
optional)
Computer Output 0 to +5 VDC, logarithmic (0 - 100 mV and 0 - 50 mV
optional)
(Other Outputs Available Upon Request)
System Accuracy (during "all" conditions) Accumulative @ Meter +36% of input radiation
Analog Outputs +28% of input radiation
Power Requirements: a) AC Voltage: 108 to 132 VAC, RMS @ 60 ±3 Hz
b) Battery Power: 22 to 32 VDC @ 600 mA DC
maximum
Temperature Coefficient 0.40%/°C, + 0.25 R/h/°C
Dimensions (W x H x D) 8.46 x 5.25 x 15.21 in
(214.88 x 133.35 x 386.33 mm)
Weight 20 lbs (9.07 kg)
Environmental Parameters Temperature (Storage): 40° to 140°F (4° to 60°C)
Temperature (Operating): 40° to 120°F (4° to 49°C)

Introduction
Specifications 1
1-3
Relative Humidity (Storage): 0 to 95% (non-
condensation)
Relative Humidity (Operating): 0 to 90% (non-
condensation)
Irradiation: 3.5 to 1 x 103Rads @ 60°C integrated over
40 years life.
Mounting 876-1-55, Rack Chassis
Available Options (consult factory) 876A-100: Readout, for use with digital systems
Outputs: 0
- 100 mV
0
- 50 mV
0
- 10 mV
0
- 5 V
Figure 1-2 illustrates the typical energy response for the detector, Figure 1-3 illustrates typical linearity for
the detector and Figure 1-4 illustrates radiation input versus meter reading.
1.3 Equipment Overview
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. 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. The assembly has the appearance of a large air capacitor. The mounting posts are
attached to the mounting flange through insulating spacers, so the flange and housing will be neutral with
respect to the charges applied to the electrodes.
The whole assembly is covered by the six-inch diameter housing which contacts only the neutral
mounting flange. The mounting flange is pierced by three holes. One hole supports the exhaust tube used
for exhausting and back filling the chamber. The other two support two 2-pin connectors, one for each
electrode. One pin in each pair is connected to the neutral mounting flange. When the coaxial signal
cable is connected to this connector, the cable shield is connected to the neutral pin.
The entire chamber is filled with a mixture of helium and nitrogen at atmospheric pressure and sealed.
For further information refer to Section 4, Functional Description.
Readout Module (876A-1)
The 876A-1 Readout Module is designed to give an indication, on an analog meter, of radiation levels
within the containment area. The readout is composed of an analog meter, indicator lights and operating
switches. The meter has a range of 1 to 107R/h and is controlled by an eight position rotary switch. The
readout is mounted in the 876-1-55 Rack Chassis located in the control room.
For further information refer to Section 4, Functional Description.
Rack Chassis (876-1-55)
The 876-1-55 Rack Chassis permits mounting of two readout modules or one readout module and one
optical isolator in a 19-inch wide RETMA equipment rack. The panel height is 5.21 inches.
For further information refer to applicable drawing located in Appendix C.

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1-4
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.
Table 1-1. Pull-box Variations
Model Inlet, Size and Location Outlet, Size and
Location Inlet/Outlet Orientation
878-12 1" 270° 2, ¾", 90° 180°
878-12-M 1 1" MNPT 270° 2, ¾", 90° 180°
878-12-M2 1" MNPT 270° 2, 1", 90° 180°
878-12-M3 1" 270° 1, 1", 90° 180°
878-12-M4 1" 270° 1, 1", 90° 90°
878-12-M5 ¾" 270° 2, ¾", 90 180°
878-12-M6 2, ¾" 0°/360° 2, ¾", 90 90°
878-12-M7 1" MNPT 270° 2, ¾", 90 90°
878-12-M8 2, ¾", 0° 1,1", MNPT, 90° 90°
878-12-M9 1,1" MNPT 90° 1, ¾" MNPT, 120° 150°
1, ½" MNPT, 210° 210°
878-12-M10 1,1" MNPT 2, ¾ 90° 0°
878-12-M11 2, ¾", 90° 1,1" MNPT 90° 0°
878-12-M12 2, ¾", 270° 1" MNPT, 0° 90°
Flexible Tubing (878-12-30TAB)
1.0 inch diameter flexible stainless steel tubing is available in various lengths to interconnect the 877-1
Detector to the first pull-box.
Cables/Connectors/Panel
In-Containment Cable: (878-1-9-TAB)
Ex-Containment Cable: (50-103-TAB)
Replacement Detector Connector Kit: (878-7-5)
Blank Panel: (844-8-5)
Optional Equipment
The following optional equipment is available:
878-10 Field Calibrator - 250 mCi 137Cs

Introduction
Equipment Overview 1
1-5
Figure 1-1.High-Range Containment Monitor 875

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Operators Manual
1-6
Figure 1-2.Typical Energy Response Curve – Detector 877-1

Introduction
Equipment Overview 1
1-7
Figure 1-3.Typical Linearity Detector 877-1
Figure 1-4.Radiation Input vs. Meter Reading (Calculated Curve)

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Operators Manual
1-8
Figure 1-5.High-Range Detector, Recommended Installation
1.4 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.
3. Verify that all items listed on the packing list have been received and are in good condition.
If any of the listed items are missing or damaged,
notify Fluke Biomedical.
NOTE

Introduction
Storage 1
1-9
1.5 Storage
Storage of Victoreen instruments must comply with level B storage requirements as outlined in ANSI
N45.2.2 (1972) Section 6.1.2(.2). The storage area shall comply with ANSI N45.2.2 (1972) Section 6.2
Storage Area, paragraphs 6.2.1 through 6.2.5. Housekeeping shall conform to ANSI N45.2.3 (1972).
Level B components shall be stored within a fire resistant, tear resistant, weather tight enclosure in a well-
ventilated building.
Storage of Victoreen instruments must comply with the following:
1. Inspection and examination of items in storage must be in accordance with ANSI N45.2.2 (1972)
Section 6.4.1.
2. Requirements for proper storage must be documented and written procedures or instructions must
be established.
3. In the event of fire, post-fire evaluation must be in accordance with ANSI N45.2.2 (1972), Section
6.4.3.
4. Removal of items from storage must be in accordance with ANSI N45.2.2 (1972), Sections 6.5 and
6.6.
1.6 Procedures, Warnings, and Cautions
The equipment described in this manual is intended to be used for the detection and measurement of
ionizing radiation. It should be used only by persons who have been trained in the proper interpretation of
its readings and the appropriate safety procedures to be followed in the presence of radiation.
Although the equipment described in this manual is designed and manufactured in compliance with all
applicable safety standards, certain hazards are inherent in the use of electronic and radiometric
equipment.
WARNINGS and CAUTIONS are presented throughout this document to alert the user to potentially
hazardous situations. A WARNING is a precautionary message preceding an operation that has the
potential to cause personal injury or death. A CAUTION is a precautionary message preceding an
operation that has the potential to cause permanent damage to the equipment and/or loss of data.
Failure to comply with WARNINGS and CAUTIONS is at the user's own risk and is sufficient cause to
terminate the warranty agreement between Fluke Biomedical and the customer.
Adequate warnings are included in this manual and on the product itself to cover hazards that may be
encountered in normal use and servicing of this equipment. No other procedures are warranted by Fluke
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.
Indicated battery and other operational tests must be performed prior to each use to assure that the
instrument is functioning properly. If applicable, failure to conduct periodic performance tests in
accordance with ANSI N323-1978 (R1983) Radiation Protection Instrumentation Test and Calibration,
paragraphs 4.6 and 5.4, and to keep records thereof in accordance with paragraph 4.5 of the same
standard, could result in erroneous readings or potential danger. ANSI N323-1978 becomes, by this
reference, a part of this operating procedure.

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(Blank page)

Installation
Installation 2
2-1
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:
Refer to the applicable drawings in Appendix C for
further installation Instructions.
Rack Chassis
The 876-1-55 Rack Chassis is a standard 19-inch chassis with a flame barrier. When seismic qualification
is required for the readout, seismic support brackets (P/N 876-1-114) are needed to support the rear of
the rack chassis. The brackets are designed to mount on the 19-inch qualified equipment rack.
Recommended mounting is shown on drawings GEL876-1-55, and 876-1-114.
Readout Module
Readout Module 876A-1 is designed to fit into one-half of an 876-1-55 Rack Chassis. Insert the readout
module in the rack chassis (see drawing GEL876A-1), then insert and tighten the two holding screws in
the rear flanges of the rack chassis. The pawl fastener on the front panel of the readout must be
tightened.
Optical Isolator (No longer manufactured, consult factory)
Detector
The detector case MUST BE PHYSICALLY
GROUNDED TO EARTH GROUND. The readout
instrument circuit common SHOULD NOT be
grounded to earth ground.
The 877-1 Detector is designed to mount on the containment wall. A mounting bracket attached to the
detector has four holes that are used for mounting. Studs must be placed in the containment wall before
mounting the detector. Dimensions for the studs are the same as the dimensions of the holes in the
mounting bracket (refer to drawing GEL877-1). Recommended studs are 5/16 inch Grade 5. No lock
washers are to be used and recommended torque for the nuts is 18 ft. lbs. Orient the detector so that the
cable connectors are on the underside. Attach the detector to the mounting bracket with the four clamps
provided, securing the bolts with a torque of 132 in. lbs. (Figure 1-5 and GEL877-1).
Pull Box
A cable pull box is required to allow for thermal expansion of the detector cables and to provide a service
loop. The pull box (drawing 878-12-5) is a typical type that mounts to the containment wall. It should be
mounted directly below the detector as shown in Figure 1-1. Depending on actual detector location, more
than one pull box may be necessary.
NOTE
NOTE

Victoreen 875
Operators Manual
2-2
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. Additional information is found in the paragraph below Cable Sealing and in CABLE-
877 and 878-12-3 procedures in Appendix B.
Once the cables have been pulled and tested, the pull box cover must be bolted shut. To bolt the pull box
shut, follow the steps outlined in procedure 878-12-3 in Appendix B. Pull box material type and grade is
304 stainless steel.
Cable Sealing
In-containment cable is 878-1-9. This is special cable designed to withstand the potential high radiation
that may exist following a L.O.C.A. or similar event. In order to withstand the high pressure and moisture
generated during such an event, the entire cable length must be sealed so that moisture will not come in
contact with the cable. Cable specifications are listed below.
Specifications for Cable 878-1-9
Conductor #24 AWG, 19/36 Tinned Copper
Insulation Tefzel (BIWF)
Shield #36 AWG, Tinned copper brand, 90% Coverage
Jacket Tefzel (BIWF)
Outside Diameter 0.250 to 0.295 in
(6.35 to 7.49 mm)
Impedance 75 ohms nominal
Capacitance 22 pf/ft nominal
Dielectric Strength 7000 V minimum
Operating Voltage 2300 V maximum
The following guidelines are based on the sealing method used during the qualification test. Stainless
steel Flex Hose 878-12-30, ¾ inch diameter x 18.5 inches long (with welded Swagelok connectors)
should be installed between the detector and pull box. Stainless steel tubing (¾ inch diameter) should be
installed from the pull box to the penetration for each cable. If a common stainless steel tubing run is
used, a one (1) inch diameter tube is recommended.
Seismic support and the sealing technique at
penetration vary with plant requirements.
Techniques and materials used are the customer's
responsibility.
Attach the stainless steel tubing to the pull box with compression fittings (¾ inch) and, after finger
tightening, tighten at least 1-¼ turns. The flex hose connection at the pull box is installed in the same
manner. The detector end of the flex hose is swaged to the cable connector backshell. This should not be
NOTE
NOTE

Installation
Installation 2
2-3
done until cable is pulled and tested. (Refer to the procedure Cable-877, in Appendix B, for more
information.)
Minimum bend radius of the 878-1-9 cable is four
inches. When bending conduit or flex hose, take
this into consideration. Typical bend radius for P/N
878-12-30 is ¾ inch; stainless steel flex house is 12
inches.
2.2 Cable and Wiring Installation
Detector Cable Inside Containment
Detector cables used inside containment are to be installed and terminated according to procedure
Cable-877, in Appendix B. Do not allow any moisture or contaminants to deposit on the connectors used
for installing cables due to the potential for electrical leakage. Because the detector transmits extremely
small current signals, no terminal block connections are acceptable in the penetration. Signal conductor
must be shielded but not grounded (qualified butt splices are acceptable). Refer to drawing GEL875-1 for
electrical connections and to 878-1-9 for cable data.
The detector and readout must not be connected
during the following test.
Detector Test After Installation
Testing of detector cables after installation is required. A leakage test from the center conductor to the
shield should yield better than 1000 megohms at 1000 VDC.
Typical resistance of the center conductor is 0.022 ohm per foot at 20°C (68°F).
Detector Cable Outside Containment
Detector cables used outside containment should be a qualified coaxial type RG 59/U. Ideally, the cable
should connect directly from the penetration to the appropriate connectors on 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. Specifications for cable used
outside containment are listed below. Refer to drawing 50-103 for additional data.
Specifications for Cable 50-103
Type RG 59/U, alternate
Conductor 19/36 Tinned copper
Insulation Cross-linked polyethylene
Flame Tape Mica tape
Shield #36 AWG, 92% coverage
Insulation Wrap 0.001 inch (0.03 mm) mylar
Jacket Type Bostrad 7 (CSPE)
NOTE
CAUTION

Victoreen 875
Operators Manual
2-4
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.
Table 2-1. Installation
Computer & Recorder
Function J3
Ground D
Ground F
Computer E
Recorder C
All Alarms on P2 Normal Operation * Shelf State
Alert Alarm I N NO NC
P C C
R NC NO
Alert Alarm II D NO NC
E C C
F NC NO
High Alarm I S NO NC
T C C
U NC NO
High Alarm II G NO NC
H C C
J NC NO
Fail Alarm I K NO NC
L C C
M NC NO
Fail Alarm II A NO NC
B C C
C NC NO
Power Connections (P1)
Line A
Neutral B
Chassis Ground C
* Relays are Fail Safe, i.e. energized for normal operation. Relays de-energize during an alarm condition.
NO = Normally open
C = Common
NC = Normally closed

Operation
Operation 3
3-1
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. Turn the function switch to the TEST position, and press and release the Electronic Check Source
(ECS) push button. About four seconds later, the SAFE-RESET light should come on. Then press
and hold the CHANNEL TEST push button. The ALERT, HIGH, and CHANNEL TEST lamps should
light immediately.
When channel test is pressed, the high and alert
alarm relays are deactivated. (Their coils are de-
energized). The wiring of the channel test circuit is
such that the channel test lamp will not light unless
the alarm relay contacts are in the deactivated or
tripped state. This is for the purpose of assuring
that an actual contact state change has occurred,
identifying that the channel is in the test mode.
Reconciling these alarm conditions is the user's
responsibility, since the remote alarms are not
included in the standard containment monitor
system.
2. Release the CHANNEL TEST push button. The SAFE-RESET lamp should stay on. Either or both
of the HIGH (red) and ALERT (yellow) lamps may stay on or go out depending on the alarm reset
mode chosen by the installation of jumpers on the alarm circuit board. The monitor is supplied with
the manual reset mode selected.
3. To reset any alarm light, press the SAFE-RESET push button. If conditions are normal, the light will
go out.
4. Switch the function switch to the ALL position.
5. Again press the ECS push button. The panel meter indicator should go to a reading of about 103
R/h and the green SAFE-RESET light stays on in the operating condition. If the panel meter shows
little or no deflection at the pressing of the ECS push button, the green light should go out four
seconds after the ECS push button is pressed. In this case, follow troubleshooting procedures.
6. To set the alert and high alarm adjustments, remove two screws in the rear of the chassis, loosen
the knurled knob on the front of the chassis, and slide the module forward part way out of the rack
to reveal the adjustment potentiometers R513 and R509 on the relay driver printed circuit board. To
adjust the HIGH alarm, depress the red HIGH push button and adjust R513 (drawing 876A-1-75A)
until the meter indicates the desired alarm level. To adjust the ALERT alarm, depress the yellow
ALERT push button and adjust R509 (drawing 876A-1-75A) until the meter indicates the desired
NOTE

Victoreen 875
Operators Manual
3-2
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.
Figure 3-1.Readout Module 876A-1, Front and Rear View (reference only, not to scale)