Processing System Upgrade at the Farley Nuclear Plant #20328 - - PowerPoint PPT Presentation

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Mar 29, 2023 206 likes •534 views

AVANTech I N C O R P O R A T E D AVANTech's Liquid RadWaste (LRW) Processing System Upgrade at the Farley Nuclear Plant #20328 WM2020 Conference, March 8 - 12, Phoenix, AZ AVANTech: Mark Ping , Larry Beets, James Braun www.avantechinc.com

SLIDE 1

AVANTech

I N C O R P O R A T E D

WM2020 Conference, March 8 - 12, Phoenix, AZ

AVANTech: Mark Ping, Larry Beets, James Braun

www.avantechinc.com

AVANTech's Liquid RadWaste (LRW) Processing System Upgrade at the Farley Nuclear Plant – #20328

SLIDE 2

Previous System

◼ Standard Media Based Demineralizer System ◼ Up-front Granular Activated Carbon (GAC) ◼ Standard Ion Exchange Resin ◼ Specialty Media (optional) ◼ Chemical Injection (optional) ◼ Minimal Shielding ◼ Manually Operated (no automation) ◼ No integrated waste handling (manual sluice to waste container)

SLIDE 3

New System - Key Technologies

◼ Oxidation: Ozone ◼ Suspended Solids Removal: Ultra-Filtration (UF) ◼ Dissolved Solids Removal: Reverse Osmosis (RO) - Double Pass ◼ Ion Exchange: Selective Medias ◼ RO Reject Disposition: Dried to Solids ◼ Solids Drying Technology: Paddle Dryer

SLIDE 4

AVANTech UF Installations

SLIDE 5

AVANTech RO Installations

SLIDE 6

Simplified Process Flow Diagram

Waste Holdup Tanks

TUF™ SKID

TUF™ Membranes Ozone Generator WPS™ PASS 2 Ion Selective Exchange

50 CF

Plant Discharge Tank

TUF™ Recirc Tank

RWRO™ Pass 1 RWRO™ Pass 2 Reject Recycle

RWRO™ SKID

Solids Reject

Pass 1 Permeate

Concentrate Tank Solid Sludge Tank

Recycle

15 CF

Carbon Bed Ozone Destruct WPS™ PASS 1 Rough Ion Exchange Carbon Filter

Liquid Radwaste System (LRS)

Patented RWRO™ Process

SLIDE 7

General Layout

SLIDE 8

Why Ozonation?

◼ Destroy organics in LRW water ◼ Minimizes RO cleanings ◼ Most powerful oxidizer permitted ◼ No chemical handling ◼ No residue chemicals to treat/dispose ◼ Short half life – excess decays quickly ◼ Used as cleaning agent for Tubular Ultra-Filtration (TUF™)

SLIDE 9

Ozone System

SLIDE 10

Why Ultra-Filtration?

◼ Removes essentially all solids/colloids ◼ Removes essentially all oils/greases ◼ Ultimate protection of RO ◼ Cross-flow minimizes fouling ◼ Easily cleaned with ozone ◼ Minimizes waste volume

SLIDE 11

TUF™ Advantages

◼ Continuous cross-flow cleaning of membrane surfaces ◼ Higher overall flux ◼ Protection for the RO ◼ Ozone cleaning ◼ High surface area in a small package

SLIDE 12

TUF™ Module

◼ TUF™ Module Cutaway ◼ TUF™ Module Array

SLIDE 13

TUF™ Turbidimeter

◼ Provides “quantitative” protection for the RO ◼ 100% reproducible NTU value ◼ 0.001 NTU Sensitivity ◼ Low Maintenance Design ◼ Long-lasting LED Light Sources ◼ Advanced System Diagnostics

SLIDE 14

TUF™ System

SLIDE 15

Why Two-Pass (Double-Pass) RO?

◼ Reduces Ion Exchange polishing media consumption ◼ 1st Pass acts as a roughing RO ◼ Allows 2nd Pass to act as a polishing RO ◼ Ability to adjust pH without fouling if necessary ◼ Minimize reject volume for treatment ◼ Maximize quality of effluent

SLIDE 16

RadWaste Reverse Osmosis (RWRO™)

◼ Two-Pass RWRO™ ◼ Two-Pass RWRO™ Pressure Vessels

SLIDE 17

Waste Processing System (WPS™)

◼ Provides ion exchange polishing for RWRO™ ◼ Destroys residual ozone prior to RWRO™ ◼ Utilizes selective media to polish ◼ Easy processing logic changes or vessel isolation ◼ Loading/sluicing simplified and effective

SLIDE 18

WPS™ Modular Ion Exchange System

SLIDE 19

WPS™ (cont’d)

◼ WPS™ Meters & Sample Sink ◼ WPS™ PVs Rear View

SLIDE 20

Reject Treatment

◼ Paddle Dryer:

✓Deals with all types of waste ✓Provides smallest radwaste volume ✓More capital intensive ✓Automatic/unattended operation ✓Deposits waste in easy-to-handle waste containers

◼ Paddle Dryer with High Integrity Container (HIC)

SLIDE 21

Solids Handling System (SHS)

SLIDE 22

Paddle Dryer

◼ Paddle Dryer without Insulation ◼ Paddle Dryer Top Section

SLIDE 23

Paddle Dryer - Waste Processing

Various video captures of the drying process (looking inside the dryer)

SLIDE 24

Heat Transfer System (HTS)

SLIDE 25

Chilled Water System

SLIDE 26

Inline Analytical Instrumentation

◼ Multiple conductivity probes ◼ Multiple pH probes ◼ Turbidity for fine particulate monitoring ◼ ORP (Oxidation Reduction Potential) probes to support

zone system control

SLIDE 27

Process Automation

◼ Completely automated operation

✓Full Local and Remote HMI Control ✓Auto sequential startup/shutdown ✓Balance system operation ✓Unattended operation possible

◼ Process optimization built-in ◼ Complete safeguards with shutdowns ◼ Data logging for historical trending ◼ Report generation ◼ Management overview of system from computer ◼ Local Touch Screen

SLIDE 28

Example of the HMI Screens

SLIDE 29

History & Reporting Functions

◼ Capable of trending performance data ◼ Allows optimization of equipment ◼ Contributes to management overview reports ◼ Helps with maintenance planning

SLIDE 30

Millicuries per Million Gallons Released

145.05 26.54 151.03 111.4 90.48 85.66 105.42 6.92

20 40 60 80 100 120 140 160

2012 2013 2014 2015 2016 2017 2018 2019

2019 was a Plant Performance Record

SLIDE 31

CONCLUSION

◼ Effluent Water Quality

✓ Processed over 4,731,765 L (1,250,000 gallons) since startup. ✓ All effluent < MDA (less than Minimum Detectable Activity) - a plant record.

◼ Waste Generation

✓ Only ~1.42 m³ (~50 ft³) of spent media has been transferred to the waste container. ✓ It is expected that the waste container will NOT require replacement until 2021.

◼ Operation

✓ Farley’s decision to add the full-time dedicated AVANTech Technician has ensured the successful performance of the LRS will continue with minimal interruptions, minimal waste generation, while producing <MDA effluent water.