Fluke Biomedical 875 Victoreen - Manual (Page 32)

Maintenance, Calibration, and Troubleshooting
Maintenance
5
5-1
Section 5
Maintenance, Calibration, and Troubleshooting
r n the containment without attention. The following
e uble-free operation.
very five years - Replace the 4 capacitor, P/N 92-3005-A (C1 01), and the RFI
e filter, P/N 92-9015A (FL101 other board of the 876A-1-108 or 876A-100
henever detector cables are re
re in Appendix A.
e libration before placing them into service. In addition, they should be
als ring routine service. The length of time between calibration intervals
determined by operat r to the applicable
procedure provided in
he high-range containment are calibration prior
e Biomedical c calibration procedure for the 876A-1 Readout is
is manual. Prior to topic calibration, the detector's hermetic seal, insulation
d capacitance are opic calibration requires a highly radioactive source
400 curies) with National Bureau of Standards (NBS) traceability. As this is beyond the
ost facilities to perform, the following method of verifying detector calibration is
recommended:
d to Fluke Biomedical at a five (5) year interval from the date of delivery
er must establish a that the average A/R/h output current or field
se, does not factory calibration by more than
± 20 %.
reg-0737 guidelines, on-site in-situ calibration checks can be performed with the 878-
ld Calibrato producing a 10 R/h indication on the channel under
ducibility of the in +/- 20 %.
878-10 Field C he 877-1 Detector, its reproducibility is based on the
aracteristics o e, the mechanical tolerances of the calibrator, detector
ll strin skill of the user. Factory recalibration is recommended
e decayed output value exceeds +/- 20 %, or if the unit has been physically
alignment of the 87 nal Test Procedure,
-108 included in App -1.
nnel must be fully knowl pting to perform the
test. The Readout should be c rce to verify its ability to measure the input
rately to within +/-
5.1 Maintenance
The monitor is designed to ope
replacement schedule should k ate for long periods i
ep the monitor in tro
E 200 microfarad electrolytic
lin
R ), located on the 876-1-78 m
eadout Module.
W
co moved - Replace the nickel seals, P/N 877-1-60-1, on the detector
nnectors as described in the CABLE-877 procedu
Calibration 5.2 Field
The monitoring systems req
recalibrated at regular interv uir ca
du
should be ions personnel. For further calibration information, refe
calibration Appendix A.
T a monitor underwent a complete electronic and isotopic
to leaving the Fluk plant. The electroni
supplied in th primary iso
. Primary isot resistance an
(greater than verified
capability of m
Detectors shall either be returne
or the own
procedure to determine
calibrator respon deviate from original
To encompass Nu
Fie 10 High-Range
test. The repro r that is capable of
calibrator is with
Concerning the
known decay ch alibrator used with t
f the
137
Cs sourc
positioning, calibrator pu g tension and the
if the reproducibility of th
damaged.
Electronic
TP876A-1 6A Readout may be performed using Functio
endix A, and the standard test equipment as listed in Table 5
edgeable in the operation of the readout prior to attem Perso
alibrated with a current sou
current accu 10 %.