SRR Board of Managers May 11 2016 page 1

BUSINESS SENSITIVE BUSINESS SENSITIVE

3H EVAPORATOR RECOVERY

Mike Borders Tank Farms/ARP-MCU/ETF Project Director

SRR Board of Managers May 11 2016 page 2

BUSINESS SENSITIVE

3H Evaporator Background • 3H Evaporator Pot Discovered Leaking on Feb 17

• Leak was safely contained in a stainless steel lined cell (has since been cleaned/emptied)

• 16 years into a 30 year design life • 3/8” Hastelloy G3 (ASTM SB-582) • Pot is insulated with Calcium Silicate in a Stainless Steel Lagging (15 gauge)

• Realized ROMP Risk 344

• FY16 PEMP Impacts

• None expected • Puts burden of earnings in Tank Farms on ARP/MCU with reduced evaporator

capacity • SRR has a mitigation plan that supports FY16 PEMP objectives with 3H down

• 3H Recovery Team with 7 Sub-Teams Established and Working

SRR Board of Managers May 11 2016 page 3

BUSINESS SENSITIVE

3H Team Updates

Flowsheet Impact Team – Complete Developed and communicated

system plan that supports a 3 year 25H Outage, while supporting H Canyon, DWPF, and Salt objectives

Pete Hill to brief specifics Cell Cleaning Team -

Complete Cell and external pot cleaning has

been completed Limited Operations Team -

Suspended Leak location will not support a

modified operating strategy

SRR Board of Managers May 11 2016 page 4

BUSINESS SENSITIVE

3H Team Updates Leak Repair / Failure Analysis

Teams – Working With liquid at 58”, there was no decrease in

level (below the steam chest) Leak focus areas – tube bundle steam

chest, leg attachments, transition weld from cone to cylinder

Leak location was not obvious from internal pot inspection

Dye penetrate test is being planned Initiated efforts to model the evaporator

(thermal and stress) Utilizing subject matter experts and

corporate reach back experts to assist

Water Management Team – Working Initiated Modification for F Catch to Tank 3

Transfer Evaluating Thin Film Evaporator options

Replacement Team - Working

Normal Operating Level – 95” Center of Steam Chest – 76” Bottom of Opening – 62” Stiffener Band – 37”

Stiffener Band – 0”

SRR Board of Managers May 11 2016 page 5

BUSINESS SENSITIVE

3H Evaporator Replacement Update Scope: Purchase and install a replacement evaporator vessel for 242-25H, including removal of the failed vessel.

Planning • Estimate - $17.9M (Incr only) • Schedule – 3 yrs (3/16-3/19)

Status • Initiated Evap Spec Dev – 5/5/16 • Initiated Drawing updates • Located As-Builts/Remotability • Inv Finite Element Analysis

• Approved TTR • Inv Supplier List / Best Value Deter • Initiated Planning discussions on Evap

Pot Removal/Rigging

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Inspect/Determine Failure Mode

4/26/2016

Toda

y

Cell

Clea

n U

p/ R

epai

r Cell Dose Array

Cell Cleaning

Cell Dose Array

Pot Inspect

Leak Located

Inspection Requirements

Internal Inspection WP Development

Dye Penetrant

New

Pot

New Pot Procurement Spec

Waste Box Procurement Spec

New Pot Planning

New Pot Bids/Award

New Pot Fab/Delivery 96 Weeks

Waste Box Bids/Award

Waste Box Fab/Delivery

Wat

er M

gt

Identify/ Recommend Phase 1 Strategy

Identify/ Recommend Phase 2 Strategy

Identify/ Recommend Phase 3 Strategy

Develop/Install F Catch Tank Pump

Dye Enhanced Visual

Deploy Dye Penetrant Inspect/Determine

Failure Mode

Leak Located

Tech Eval Dye Penetrant

External Inspection WP Development

Dye Penetrant

External Inspection Dye Penetrant

Inspect/Determine Failure Mode

Lagging Removal Technique Development

Leak Located

Pot Repairable

Pot Repairable

Pot Repairable

Develop Repair Technique

Flush Pot

Dye Enhanced Visual

Inspect/Determine Failure Mode

SEE

ASME VIII Evaluation

Fatigue Analysis