• Easy, fast and secure replacement of sampling bottles • Mechanically-resistant sampling bottles • Silica gel-like absorption medium (longer sampling time/higher amount of sample, compared to liquid absorption media) • Parallel arrangement of sampling lines for more accurate differential evaluation and distinction of inorganic and organic forms • Wide range and high accuracy of flow rate adjustment • Measurement of the humidity downstream of the tritium sampling bottles • Remote checking and control from the host system • Proportional sampling relative to flow in the ventilation stack enables calculation of the amount of released 3H and 14C The V3H14C is designed for 3H and 14C sampling from the air. Basic absorption media are silica gel for sampling 3H and sodium hydroxide (NaOH) for sampling 14C. Sampler includes two separate sampling lines for the sampling of different 3H and 14C forms. In the common intake section, there is an aerosol filter, a mass-flow meter, and pressure, temperature and relative humidity sensors. The first line includes a pump, a catalyst furnace, and sampling bottles containing silica gel. Also pressure, temperature and relative humidity sensors, an overflow trap bottle, and the sampling bottles containing NaOH. This line is designed for sampling 3H and 14C in all forms including H2, CO and CxHx. The catalyst furnace temperature is adjustable in a broad range with high accuracy and is permanently measured and checked. The second line is similar, but does not include the catalyst furnace. It is designed for 3H and 14C sampling, exclusively in the inorganic forms of H2O and CO2. Within one sampling line, 3H sampling precedes the 14C sampling, and the sorption medium of 14C is thus protected against humidity. Downstream of the 3H sampling and upstream of the 14C sampling the humidity is measured, which enables a check of the efficiency of water sampling by the silica gel. The sorbents are filled into glass sampling bottles and the bottles are screwed into the holder in the laboratory; for safety reasons only assembled bottle arrays are handled at the sampler's location. During normal operation, the sorbent should be normally exchanged on a weekly basis. The air flow may be constant, or it may be adjusted proportionally to the value present at the equipment control input. It is adjustable in each sampling line separately. The set flow rate influences the duration of the sampling campaign. The flow through the individual lines may be limited by the parameters of the sorbent, and by the catalyst filling. On the graphic display, it is possible to read the total amount of sampled air, current flow rate through the sampling lines, time of operation and all monitored values, such as temperature, pressure, and humidity in the line, and the temperature of the catalyst. The samples are used for subsequent laboratory analysis. Activities of samples, resulting from the analysis, serve for the calculation of total releases of 3H and 14C. By comparing the difference in both samples, it is possible to determine the total released amount of all forms - the inorganic and organic forms of 3H and 14C.

Sampled air Relative Humidity max. 80%, non-condensing Specification subject to change without prior written notice.

TRITIUM AND CARBON-14 SAMPLER TYPES OF SAMPLERS Model Sampling lines Differential sampler organic and inorganic forms 3H and 14C organic and inorganic forms 3H and 14C organic and inorganic forms 3H organic and inorganic forms 3H Software application for remote control Local Data Logger for V3H14C Transport box for sampling bottles in the holders PC remote control screen V3H14C Desorption unit VF, a.s. Czech Republic T:+420 516 428 611 E: [email protected] www.vfnuclear.com Specification subject to change without prior written notice.

Assembled bottle array for silica gel Transport box for sampling bottles in the holders Assembled bottle array for NaOH solution Insertion of the holder with sampling bottles with silica gel VF, a.s. Czech Republic T:+420 516 428 611 E: [email protected] www.vfnuclear.com Specification subject to change without prior written notice.