Tank Operations Contract

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Hanford’s Double-Shell Tank AY-102 Recovery Project Session 006 - Paper 17416

Carl Hanson,AREVA Federal Services, LLC**

Doug Greenwell,Washington River Protection Solutions

Sebastien Guillot,AREVA Federal Services, LLC

Jordan Follett,Washington River Protection Solutions

**Presenter

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March 6, 2017

Tank Operations Contract

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AY-102 Tank Construction/Background

Tank Operations Contract

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Tank AY-102 Overview

Initial Tank Waste

inventory (<3/2016)

• 1 Million Gallons Capacity

• Ø75 feet x 30 feet high, 15 feet

below grade

• Wastes from historic B Plant

operations and strontium/cesium

extraction processes

View of the primary tank only

Tank Operations Contract

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AY-102 Annulus Waste Accumulation

Tank Operations Contract

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Retrieval Transfer System Overview

(Receiver Tank)

Tank Operations Contract

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Project Challenges

• 24 months from design to readiness!

• Numerous risks realized:

o Receiver Tank Selection

o Transfer Structure Shielding

o Infrastructure and Equipment Upgrades

o Availability Retrieval Equipment

o Pump Design Updates

o Ventilation System Capability

o Tank Vapor Issue Evolution

o Overall Project Execution

Tank Operations Contract

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Conceptual Sketch and Aerial Photo of

the Waste Transfer Route

Tank Operations Contract

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Trench Digging through 241-AX Tank

Farm & Road Crossings

Tank Operations Contract

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Tanks AY-102 and AP-102 Equipment Removal

and Pit Refurbishment

AY-02A Pit cover block removal in October 2015

AY-02D Pit before equipment removal and pit rehabilitation in November

2014

AY-02D Pit after rehabilitation in February 2015

AY-02A Pump removal in October 2015 AY-02A Pump packaging and shipping for disposal in January 2016

• Removed 5 obsolete pumps from AY-102 and AP-102

• Rehabilitated and upgraded 7 pits to receive new equipment

Tank Operations Contract

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Equipment Installation

Designed, fabricated, installed and tested 3 new pumps

• Slurry pump and annulus pump in AY-102

• Supernatant pump in AP-102

Annulus pumpAY-02A slurry pump installation in

November 2015

AY-02A pit equipment

installation completed in

November 2015

Tank Operations Contract

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Sluicing Equipment Comparison…

Two-Stage Retrieval

Following first phase of

retrieval, the retrieval system

was reconfigured with four

Extended Reach Sluicers

Tank volume coverage:Standard Sluicer vs ERSS

Standard Sluicer D Standard Sluicer B

Full-scale mockup of the AY-102 primary tank at the Cold Test Facility with a prototype ERSS to train retrieval operators

Tank Operations Contract

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AY-102 Sluicing Operations

Tank Operations Contract

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Primary Tank Leak Behavior

Sluicer 1

Sluicer 2

R54

R57

R67

R51

R63

R80

R69

R61

R52

R39

R88

R91

R89

Tank Operations Contract

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Retrieval Progress

Sluiced for approximately 490 hours

• Standard Sluicers operated for 305 hours

• Extended Reach Sluicers operated for 185

hours

• Recycled 2.7 million gallons of supernate

Removed over 725,000 gallons of waste

• 590,000 gallons of supernate

• 135,000 gallons of sludge

Estimate 18,000 gallons of total waste

remaining

July 2014

January 2017