ML20207C088

Rev 11 to Uftr SAR, Consisting of Change Page 12-20

ML20207C088
Person / Time
Site:	05000083
Issue date:	12/31/1998
From:	FLORIDA, UNIV. OF, GAINESVILLE, FL
To:
Shared Package
ML20207A609	List: ML20207A605 ML20207C088
References
NUDOCS 9903080355
Download: ML20207C088 (1)

Text

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The strip chart recorder is a Gutton Rustrak D.C. Recorder. This D'arsonval meter instrument records signals from the RS-2 log count rate meter for permanent record. All three radiatior.

, monitoring systems are calibrated quarterly with the assistance of the Radiation Control Office.

In the event of a loss of power, all radiation monitors operate on installed battery packs (rated l to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />) to insure their availability at all times.

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l 12.3.4.2 The Stack Monitoring System. The Stack Monitor System, consisting of a GM detector, a l l log rate meter and a strip chart recorder, is equivalent to the area monitoring system. In addition to

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l these, it may also include a log rate meter with an alarm setting capability for different operating

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L power levels, with the information obtained from the RS-2 log count rate meter. The GM detector is '

l located on the downstream side of the absolute filter, before dilution takes place.  !

i 12.3.4.3 Air Monitoring System. An Air Particulate Detector (APD) is designed to detect airborne  ;

particulate activity. The APD is equipped with a flow indicator (LPM), a strip chart recorder and _  ;

! audible as well as visual alarm settings. The monitor is a compact airborne particulate counter which l may be used in an occupational environment or in confined spaces. The air is drawn through a filter ,

paper by a constant volume pump; the activity is detected by the counter near the filter and recorded on the strip chart recorder. An alarm is activated whenever a high activity level is detected.

123.4.4 Radiation Monitoring. Operators and other personnel working in the reactor wear film, TLD, Luxel or other individual personnel monitoring badges at all times. Ifindicated by the type of work, a direct-reading pocket dosimcer, or other dosimeter is worn as specified by the D-Series of the UFTR Standard Operating Procedures which address radiation protection and control. l l Various portable survey meters are also available to be used whenever it is deemed necessary and/or required by the SOPS.

Surveys performed on a weekly basis include swipe surveys, air and water samples, and beta-gamma radiation field surveys. Surface contamination in the room is determined by means of portable

. instruments and smear tests. Particular attention is given to the equipment pit, experimental areas and u the irradiated fuel storage pits during each survey. Periodic surveys by health physics personnel are performed to check for leakage around beam plugs and through the stacked-block reactor shield; periodic air samples are also taken and analyzed providing a check on the proper functioning of the continuous air monitoring (CAM) system. The coolant is checked by evaporating a sample to dryness and counting with a gas flow proportional or equivalent counter.

As indicated previously, there is an ongoing program by the Radiation Control Office and the UFTR facility staff to monitor radiation levels outside the UFTR building in the nearby vicinity.

Monitoring is performed by placing radiation recording devices at seven (7) or more locations outside l the UFTR building. Typicallocations for such devices are marked on the sketch of the UFTR building and immediate vicinity presented in Figure 12-9c These film badges, TLDs or other monitoring devices are collected by the UFTR staff or Radiation Control personnel and evaluated

, monthly at a NVLAP-certified processor.

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12-20 REV 9,8/95 l 9903090355'990219 REV 11,12/98 DR ADOCK 0 3.

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