Testing of Carbon Filters in Australian Nuclear ...

1 Testing of Carbon Filters in Australian Nuclear Installations 31st International Nuclear Air Cleaning Conference, Charlotte NC. 19-21 July 9 Ju y 20100 0. Luis Rudenas Engineering & Technical Services Australian Nuclear Science and Technology Organisation July 2010. Carbon filter tests objectives j Prevent reactor shutdown due to Carbon filter failures Trained workshop personnel available at any time to refill Carbon Filters Easy to understand instructions to test Filters by maintenance personnel New filter housing upgrades with modular designs of canisters and fire suppression Filtration system tested and reliable reliable. Stack monitoring to check effectiveness July 2010. Adopted standards for assembling and Testing Filters at ANSTO. ASME AG-1. AG 1 Code on Nuclear Air and Gas Treatment ASTM 3803. 3803-89. 89 Standard Test Method of Nuclear -Grade Activated Carbon ASME N510 -2002.

2 2002 Testing T ti off Nuclear N l Air Ai Treatment Systems ASME N509-2002 Nuclear Power Plant Air-Cleaning Units and Components July 2010. Test of Carbon Filters IInjection j ti and d sampling li manifolds if ld properly l designed Air distribution test Aerosol uniformity test Mechanical integrity testtest, pulses of 1. Bromobutane Advantage g of ggas p pulse is less g gas used and the test can be repeated immediately Gas pulse test complemented by laboratory t t off installed test i t ll d canisters i t or by b di directt Carbon b sampling of Filters July 2010. Response to Carbon test results ASTM 3803-89 test failure requires Carbon Filters to be replaced Mechanical test failure requires Filters to be reinstalled or replaced Availability of Carbon with valid ASTM. 3803-89 Certificate (5 years). Spare Filters with valid certificate (5 years if never used).

3 July 2010. Carbon Filters used at ANSTO. SIAM Filters size X and 10 Carbon depth, capacity 100 cfm. Area= Sq. Ft. B23 Filters 24 . 24 X 2424 and 10 . 10 Carbon depth depth, capacity 200. cfm. Area= 4 Sq. Ft. Type IV (Flanders V-Bed) 24 X 24 and 2 Carbon depth, capacity 700 cfm cfm. Area= 16 Sq Sq. Ft Ft. Type IV (Flanders V-Bed) 24 X 12 and 2 Carbon depth, capacity 500 cfm. Area= 8 Sq. Ft. Type IV (Flanders V-Bed) 24 X 24 and 1 Carbon depth, capacity 1000 cfm Canisters used at ANSTO. ANSTO, 2 . 2 or 10 . 10 Carbon depth and 2 . 2. internal diameter July 2010. Carbon filter ready for refilling Welded Screw July 2010. Facility to assemble Filters Extract Ventilation Carbon Hopper Vibratoryy Table Scale July 2010. Pouring g Carbon in the Filters July 2010. Removing g air after filling g filter July 2010. Crates designed for internal transport July 2010.

4 Confined space arrangement Demountable rollers for filter installation July 2010. Filter handling in a confined space July 2010. ASTM 3803-89 test Direct sampling from filter Sample container July 2010. Two installed Carbon canister modules 2 Canister 1 Pipe 2 Pipe Carbon Filters Air flow direction July 2010. Canister preparation Flow Check Points 1 Pipe p Upper plenum 2 Pipe to 2 . Lower plenum housing July 2010. Different canister layout y Air flow 2 Pipe 1 Pipe Upper plenum Carbon Filters Lower plenum July 2010. Instruments for Carbon Testing g NUCON Model HGPH Pulse Mode Halide Generator NUCON Model F-2000-HD ppm and ppb halide detector NUCON Model F-2000-BBD ppb halide detector NUCON Model F-1000-CR calibration rig to calibrate lib t ththe h halide lid ddetectors t t Calibration gases 200 ppb and 36 ppm of 1. Bromobutane with corresponding clean air cylinders supplied by NUCON.

5 July 2010. From 50 mm ID. Testing set up Portable fan assembly building Testing hose exhaust Pulse gas Injection generator manifold arrangement Portable HEPA filter/ fan assembly Upstream sampling manifold In Exhaust Halide detector Carbon filter ppm under test ppb Halide detector outputs In Downstream sampling manifold P t bl HEPA filter/. Portable filt / ffan assembly bl Fan July 2010. Halide injection j pulse test 1 ml of liquid 1 Bromobutane is equivalent to ml of gas at 20 oC. 2238 L/. L/s off air i flflow h has 100 ppm off 1. Bromobutane gas when 1 ml of liquid is injected in one second Always measure upstream concentration to ensure proper gas injection and calculate penetration. Penetration = 100 100*Cd/Cu Cd/Cu Maximum allowed penetration at ANSTO is 1%. The downstream concentration may exceed the i t instrument t range whenh th the Carbon b filt filter lleaks k July 2010.

6 Copper Testing manifold July 2010. Fitting 2 BSP of internal diameter to be pop riveted to a duct July 2010. Installing the Testing manifold July 2010. Calibration gases ppm and ppb of 1. B. Bromobutane b with i h clean l air i cylinders li d July 2010. Gas detectors ppm and ppb July 2010. Gas leak investigation in a side removable bl plate l t off a new filt filter omobuttane Injection time ppb of 1 Bro 0 1 2 3 4 5 6 7. Time in minutes July 2010. Carbon filter housing requirements Canisters for surveillance Testing I j ti and Injection d sampling li manifolds if ld Inlet and outlet plenums Fire suppression Bubble tight g dampers p to isolate Filters in case of fire or for maintenance purposes Carbon Monoxide sensors Thermocouples July 2010. Thermocouple activated water flood for fire suppression Sprinklers p Air flow Keystone valve 1 pipe Carbon Filters 10 Long 10.

7 Canisters Thermocouples July 2010. Fire suppression for Cyclotron Canisters Air flow HEPA Filters Thermocouples CO Sensors C b filt Carbon Filters Keystone Valve July 2010. Fire suppression for Hot Cells Keystone Valve Valves actuator Canisters Air flow HEPA Thermocouples Filters CO Sensor Carbon Filters July 2010. Fire suppression panel CO and type K thermocouples CO Monitor Thermocouple displays July 2010. Stack monitoring Air flow rate monitoring using Flow Bar devices Off-line weekly monitoring using TC45. Carbon cartridges for gases and Whatman filter papers for particulates Real R l titime monitoring it i ffor noble bl gases using i NaI sensors and a Canberra Lynx multi- channel h l analyser l July 2010. Equipment for stack monitoring Pressure NaI sensor alarm l Flowmeter Flow signal Stack sample line Stack air 100 mL Computer flow rate Al container Lynx MCA.

8 Motor Pump Air flow 5 L/min Return line to stack Temperature controlled cabinet July 2010. Air flow rate device Flow bar Calibration nutserts July 2010. Display of stack flow Alarm pressure switch Flow display July 2010. Stack sampling TC45 & filter p paper p Sampling weekly sampler lines for real time Pitot tube July 2010. Performance of TC45 Carbon cartridges TC45. H3I %. ency CH. TC30. n Efficie Retention TC12. Reproduced from HiQ data Flow Rate (SCFM). July 2010. Real time stack monitoring Operating System Platform Independent Real-time Monitor 400 0. GBq 100 0. MCA based program for looped Date / 7:39 8:40 9:40 10:41 11:41 12:42 13:42 14:43 15:43 16:44 17:44 18:45 19:46 20:46 21:47 22:47 23:48 0:48 1:49 2:50 3:50 4:51 5:51. endless measurement Time Time Xe 133 ( ) Kr 85m( ) Kr 88( ) Xe 135( ) Kr 87(76m) Xe 135m(15m). Internet Browser Based: Data Display Cumulative totals MCA desktop Data Base desktop On-line data Spreadsheet format f rmat export exp rt E-mail notification equipment failure notification levels daily totals Network Server ANSTO Network Internet July 2010 Firewall Top view of NaI sensors for real time stack monitoring NaI sensor Shielding for sensors July 2010.

9 Cabinet for stack monitoring g Computer Lynx Canberra MCA UPS. Shielded NaI sensor July 2010. Real time stack monitoring display Gamma Spectr m Spectrum 0-2000 keV. July 2010. Conclusions Correctly design new filter housings with canisters Testing manifolds canisters, manifolds, bubble tight dampers and CO monitors Periodically test the Carbon Filters and be prepared for filter changes at any time Monitor M it filt filter performance f with ith ttrends d off weekly and real time releases through the stacks t k July 2010. July 2010.