No abstract

This hook was prepared a$ an accbuhf of work sponsored by an agency of the United States Government. Neither the United Stales Gwernmenx nar any agency Iharmf, nar any of their empl@yms, makes any warranty, ex-prews or impJied, .or assumes any Iwl liability or resp~rrslitsig for the accuracy, con>p!etensss, or usef~h~css of any ~nfwmsltion, Bpparatut, pradual or p r o w s @ X I-, or represents that its u a would net inkinge privately owned rights. References herein to any spmific camm@mal product, processs or service by trade name, trademark, manufacturer, or dher~vffie, daes not mcewrily Wnsbifldte Or imply its endBrsement, recmmendatmn, sr hvor~ng by the UniW Stdtw Gavernment or any agency thcmf. The v i m and opinians of euthcws expressed hrcn'n do npt necessarily state 9r refleet those of the Unit& States Oovernmsnt Qr any agency 'thereof.

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No abstract

The in-plant testing of process off-gas HEPA filters is an important quality control activity of the ALARA (As Low As Reasonably Acheivable) policy at nuclear facilities. Imprecise and irreprodueible data were recorded during DOP testing at the Atmospheric Protection System (APS) of the Idaho Chemical Processing Plant (ICPP). The tests at the APS are performed in an environmental that has high humidity, high temperatures and has NO present-An evaluation of three HEPA filter test methods in corrosive environments was conducted: the dioctyl phthalate (DOP) method (US Standard Method ANSI N-101.1-1979> th~ sodium chloride method (British Standard 3928:1969), and the soda-fluoresce'T oc uidnin method (French Standard AFNOR STD NFX 44-011). The effects of high humidity, temperature <:r)d oxides of nitrogen (NO) on each method was examined. The effects of each variable and any interaction between variables on the test methods were examined. Recommendations for changes in the standard methods to reduce erratic on-line results are presented.