Fluke 875 Victoreen User Manual

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Victoreen® 875

High Range Containment Monitor

Operators Manual

nted in U.S.A.

Fluke Biomedical

6045 Cochran Road Cleveland, Ohio 44139

440.498.2564

www.flukebiomedical.com

Table of Contents

SECTION 1:

1.1 G

1.2 Specifications......................................................................................................................... 1-1

1.3 Equipment Overview..............................................................................................................1-3

.4 Receiving Inspection.............................................................................................................. 1-8 1

.5 Storage................................................................................................................................... 1-9

1.6 Procedures, Warnings, and Cautions....................................................................................1-9

INTRODUCTION ......................................................................................... 1-1

eneral Description ............................................................................................................... 1-1

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: FUNCTIONAL DESCRIPTION.................................................................... 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 Field 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

APPENDIX A

A.1 Calibration Procedures ..........................................................................................................A-1

A.2 Test Procedures............................................................................................................ .........A-1

APPENDIX B

B.1 Cable and Pull Box Procedures.................................................. -1

...........................................B

PPENDIX C

C.1 Applicable Drawings........................................................................................................

C.2 Bill of Materials...........

............................................................................................................C-3

.......C-1

General Information

General Description

Section 1

Introduction

1.1 General Desc

Containment Monitor 8

Containment Monitor 875 functions as an accident monitor for reactor containments

sists of the 877-1 Ion Chamber Detector that is located within the reactor containment, and the 876A-

con 1 Readout Module that is con supply that provides the nece

onnected to the detector by two cables, a coaxial high voltage cable and a coaxial signal cable.

c Specific le are contained b

Detector 877-1

Radiation Detected Photons above 60 keV

ations for the detector and readout modu elow.

.2 Specifications

ription

NOTE

The 875 Containment Monitor has been qualified for use in Nuclear Safety related applications. Qualification Test Rep

950.310A define the verified by test and ar le for purchase.

tained in a rack in the control room. The readout module contains a power ssary power both for itself and the detector. The readout module is

orts, 950.301, 950.308A, and

parameters that have been

e availab

, refer to Figure 1-1. It

ange

R 1 R/h to 1E7 R/h Energy Response ± 20 % from 80 keV to 2 MeV

hamber Construction ng, 3

C Stacked parallel plate, 316 stainless steel housi

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

hamber Capacitance C 435 picofarads (nominal)

Voltage 5E10-5 amperes

C Approximately 430 pf apacitance

)

Withstand and Leakage @ 500 VDC between either ground and

connector pins

1-1

Victoreen 875 High Range Containment Monitor

Operator Manual

Hermetic Integrity 1E10-5 cm

atmosphere

of helium per second @ one standard

Chamber Fill Gas (2%) at tmospheric pressure

ensions (W x H x D) with

Dim 9.25 x 12.5 x 10.06 in Mounting Br (234.95 x 317.5 x 255.52 mm)

Weigh

acket

t Approximately 18 lb (8.17 kg)

Nitrogen/helium a

Temperature, Storage 40 °F to 160 °F (4 °C to 71 °C) T 40 °F to 160 °F (4 °C to 7

emperature, Operating 1 °C)

375 °F (180 ccident, 3 hours

R rproof)

elative Humidity 100 % (wate

T 0 % margin,

otal Integrated Dose 2E8 Rads + 1

Chemical Spray 0.45 Gallons/minute/ft

Boron, and NaOH; ph of 11

LOCA Test Duration

28 days

°C) peak, a

(0.28 molar H3BO3, 3000 ppm

, 24 hrs

(Consult Fluke Biomedical for a complet

e description of Qualification Test Results)

Readout Module 876A-1

Range 1 to 10 Input Current Minimum: 6.5 to 7.5 x 10

Maximum: 6.5 to 7.5 x 10

R/h

-11

-4

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 Analog Outputs +28 % of inp

Power Requirements:

a) AC Voltage: 108 to 132 VAC, RMS @ 60 ± 3 Hz

+36 % of input radiation

ut radiation

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.

(214.88 x 133.35 x 386.33 mm)

21 in

Weight 20 lbs (9.07 kg) Environmental Parameters Temperature (Storage): 40 °F to 140 °F (4

Temperature (Operating): 40 °F to 120 °

°C to 60 °C)

F (4 °C to 49 °C)

Relative Humidity (Storage): 0 % to 95 % (noncondensation)

1-2

General Information

Specifications

Relative Humidity (Operating): 0 % to 90 % (noncondensatio

Irradiation: 3.5 to 1 x 10 40 years life.

Rads @ 60 °C integrated over

Mounting assis

Available Op onsu 876A-100: dout, for use with digit l systems

Ou 100 mV 50 mV 10 mV 5 V

Fig rates th response for r, Figure 1-3 illustra pical linearity for

ure 1-2 illust

the d Figure radiation input er reading.

detector an

1. ent

3 Equipm Overview

H ontainm or Detecto

igh-Range C ent Monit r (877-1)

Th containm detector is a tector that has the appearance of a

e high-range

si r domed out seven inc er are two flange-mounted

x-inch diamete

el isting of haped plates, ur inches in diameter, stacked, and

ectrodes cons 31 flat, disk-s each about fo ounted on disk rods. The assembly has the appearance of a large air capacitor. The mounting posts are

m attached to the mounting flange throug respect to the charges applied to the electrodes.

The whole assembly is covere mounting flange. The mounting for exhausting and back filling the chamber. The oth el ted to the neutral mounting flange. When the coaxial signal

ectrode. One pin in each pair is connec

ca cable shield is connected to the neutral pin.

ble is connected to this connector, the

tions (c lt factory) Rea

e typical energy

1-4 illustrates

ent monitor

cylinder ab

h insulating spacers, so the flange and housing will be neutral with

d by the six-inch diameter housing which contacts only the neutral

flange is pierced by three holes. One hole supports the exhaust tube used

876-1-55, Rack Ch

tputs: 0 -

0 0 0 -

the detecto

versus met

n ion chamber de hes long. Inside the cylind

er two support two 2-pin connectors, one for each

tes ty

T and nitrogen at atmospheric pressure and sealed.

he entire chamber is filled with a mixture of helium

F r to Section 4, Functional Description.

or further information refe

Readout Module (876A-1)

The 876A-1 Readout Module is designed to giv

ithin the ntainment area. The readout is c

w co omposed of an analog meter, indicator lights and operating switches. The meter has a range of 1 to 10 R/h and is controlled by an eight position rotary switch. The readout is mounted in the 876-1-55 Rack Chassis located in the cont rol room.

For further information refer to Section 4, Functional Description.

e an indication, on an analog meter, of radiation levels

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.

Pull Box Assembly (878-12-5)

1-3

Victoreen 875 High Range Containment Monitor

Operator Manual

he 878-12-5 Pull Box Assembly is designed to allow for thermal expansion of the detector cables and to

p a service loop. Various optional pull-box configurations are available per Table 1-1. Fo r more

rovide

ion refer to Section 2, Appendix B, and Appendix C.

format

able 1

-1. Pull-box Variations

Model Inlet, Size and Location

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°

Outlet, Size and

Location

Inlet/Outlet Orientation

Flexible Tubing (878-12-30TAB)

.0 inch diameter flexible stainless steel tubing is available in various lengths to interconnect the 877-1

etector to the first pull-box.

ables/Connectors/Panel

In-Containment Cable: (878-1-9-TAB) Ex-Containment Cable: (50-103-TAB) Replacement Detector Co

Blank Panel: (844-8-5)

nnector Kit: (878-7-5)

Optional Equipment

The following optional equipment is available:

878-10 Field Calibrator - 250 mCi

137

1-4

General Information

Equipment Overview

Figure 1-1. High-Range Containment Monitor 875

1-5

Victoreen 875 High Range Containment Monitor

Operator Manual

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

Figure 1-3. Typical Linearity Detector 877-1

1-6

General Information

Equipment Overview

Figure 1-4.

Radiation Input vs. Meter Reading (Calculated Curve)

1-7

Victoreen 875 High Range Containment Monitor

Operator Manual

Figure 1-5. High-Range Detector, Recommended Installatio

1.4 Receiving Inspection

Upon receipt of the unit:

1. Inspect the carton(s) and contents fo notify Fluke Biomedical 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.

1-8

r damage. If damage is evident, file a claim with the carrier and

NOTE

General Information

Storage

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 wellventilated 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 pro per 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 h as 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.

1-9

(Blank page)

Installation

Cable and Wiring Installation

Section 2

Installation

2.1 Installation

Installation of the monitoring system consists of selecting suitable mounting sites for each component of the system, mountin configuration.

Installation of this system is as follows:

g each of the components, and connecting the components into the system

NOTE

Refer to the applicable drawings further ins

Rack Chas

The 876-1-55 rd 19-inch chassis with a flame barrie is required fo upport brackets the rack esigned to mount on the 19-inch qu alified equipme Recomm n drawings GEL876-1-55, and 876-1-114.

Readou

Readout Module 87 to fit into one-half

odule in the rack chassis (see draw en insert and tighten the two holding screws in

m ing GEL876A-1), th the rear flanges of the ra The pawl fastener on the front tightened.

Optical Isolat

sis

Rack Chassis is a standa r. When seismic qualification

r the readout, seismic s (P/N 876-1-114) are needed to supp ort the rear of

chassis. The brackets are d nt rack.

ended mounting is shown o

t Module

6A-1 is designed of an 876-1-55 Rack Chassis. Insert the readout

ck chassis. panel of the readout must be

or (No longer manufactured, consult factory)

tallation Instructions.

in Appendix C for

Detector

NOTE

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 c ent wall. A mounting bracket attached to the detector has four holes that are used for mountin must be placed in the containment wall before mounting the detector. D the holes in the mounting bracket (refer ade 5. No lock washers are to be used detector so that the cable connectors are on amps

rovided, securing the b of 132 in. lbs. (Figure 1-5 and GEL877-1).

imensions for the studs are the same as the dimensions of to drawing GEL877-1). Recommended studs are 5/16 inch Gr and recommended torque for the nuts is 18 ft. lbs. Orient the the underside. Attach the detector to the mounting bracket with the four cl olts with a torquep

ontainm

g. Studs

Pull Box

A cable pull box is required to allow for thermal expansion of the detector cables and to provide a service

ld be loop. The pull box (drawing 878-12-5) is a typical type that mounts to the containment wall. It shou mounted directly below the detector as shown in Figure 1-1. Depending on actual detector location than one pull

box may be necessary.

, more

2-1

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