ML19224C110
| ML19224C110 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/09/1979 |
| From: | Murri E Metropolitan Edison Co |
| To: | Jay Collins, Dubiel R, Hetrick D, Limroth D, Logan J, Mulleavy T, Witzke R Office of Nuclear Reactor Regulation, Oak Ridge |
| References | |
| NUDOCS 7906290023 | |
| Download: ML19224C110 (1) | |
Text
METROPOLITAN EDISON COMPANV
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a e,m Subject Respirator Progra: --Air Sa:pling in Work Area Location TM1 Date 5/9/79 To J. Collins--USNRC 7
R. Dubiel (3)
D.
Hetrick D.
Limroth J.
Logan T. Mulleavv (5)
R.
Witz<e TM1 Special Operating Procedure No. 2 79-073, "Use of Respirators in Iodine Atmosphere," requires that continuc'.'s air samples be taken in the "immediate work area" during the use of charcon1 canisters for protection against radie-iodine.
The determination of what constitutes this immediate work area necessarily requires sound judgement to ensure that the air sample ir reasonably representa-tive of the workers' breathing rone atacsphere.
Following are some guidelines to aid in making that determination:
1.
If the work is in an area where the air flow pattern is rel atively unif or=,
with no major obstructions, an air sample taken within about 100 feet may be quite rentesentative, 2.
If obstructions such as large equipment or other -ir flov turbations are present, the defined "immediate work area" must be reducet.._ ordingly.
3 In all cases, the air sample must be taken within the same roca: or cubicle in which the people are working.
4 In cases involving gross surface contamination, wherein the work activity is
]ikely to create significant airborne radioactivity, the air sample must be taken within that affected area.
5 It is intended that lapel air samples will be used in situations where an area air sample will not provide a reasonably representative indication of the radiciodine concentration in the breathing zone atmosphere.
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