bwrvip mitigation committee meeting plant …...meeting date: june 3-17, 2016 meeting location: san...

BWRVIP Mitigation Committee Meeting

Plant Experience Report

Name: Perry

Utility: FENOC Plant/Unit: 1

Cycle Number: 16

Meeting Date: June 3-17, 2016

Meeting Location: San Antonio, TX

Mitigation Performance – Cycle to Date

CY16 started April 2015.

Mitigation PI – Green for cycle.

Cycle

Apr

2015

May

2015

Jun

2015

Jul

2015

Aug

2015

Sep

2015

Oct

2015

Nov

2015

Dec

2015

Jan

2016

Feb

2016

Mar

2016

Apr

2016

May

2016

Mitigation

PIgreen yellow white green green green green green yellow green white green green green green

• April 2015 – cycle start.

• November 2015 – ECP Monitor hours > -350 SHE. MMS skid

unavailability due to temperature differential >5°F between MMS

and RWCU.

• January 2016 – HWC ramp test and Maintenance outage.

Inspection Relief Status

Claim inspection relief based on HWC

for jet pump hold down beams.

Increased inspection interval from every 6

years to every 10 years.

Next hold down beam inspection in 1R17

(2019).

Notable Chemistry Transients or Mitigation

Performance Issues

Replacement of Dresser

globe valves in FW

injection lines with gate

valves in 1R15.

Could not establish DI

water injection at 90

ml/min.

Attempted injection at

50% flows – skid tripped

on high pressure.

October 2015 application

terminated after injection

of 138 g Pt.

OLNC feedwater injection lines blocked after valve

replacements in 1R15 (2015).

Alternate OLNC Injection Point

Alternate injection point identified as ¾” vent line into RWCU on the return to vessel after regenerative heat exchangers.

Ties into both FW lines downstream of normal injection points.

OLNC skid moved into containment to refuel floor to inject.

◦ Contaminated area

◦ Containment FME zone

◦ Rigging through airlock to refuel floor

Alternate OLNC Injection Point

Temporary modification provided for:

◦ DI water source

◦ Power

◦ Seismic evaluation

◦ Transient combustible loading

Temporary procedures for injection

Containment FME logs

Skid Migration into Containment

Skid Migration into Containment

Skid Migration into Containment

OLNC Skid on Refuel Floor

DI Water

Temp Power

Seismic

restraints

Connection point to RWCU

1G33F0524 below grating

Reactor Plant

Sample Panel

1G33F0524

1G33F0524 1G33F0524

OLNC Skid Issues Encountered

Computer slow response

◦ Defragmented hard drive

DI water pump drive assembly seizure

◦ Last day of injection

◦ Purchased replacement drive assembly

◦ Purchased backup DI water pump

Pressure indicator PI-1 and PI-2 failure

◦ Displays strobe then go blank

◦ Capacitor issue on PI boards

◦ Purchased one new, will refurb two installed, and keep extra in spares

March 2016 OLNC Results

March 2016 OLNC Results

March 2016 OLNC Results

March 2016 OLNC Results

March 2016 OLNC Results

March 2016 OLNC Results

Other

Effectiveness of new resin strategies for

cobalt removal – CoSeq trials

◦ Slightly better efficiency for Co-60 over time

◦ Shortened run lengths

21-26 days CoSeq

28-35 days 2110H

◦ Precoat fails rapidly with little warning

◦ Resin intrusions seen using manufacturer-

recommended resin underlay

Rx Chem after RWCU CoSeq BW/PC

CoSeq CoSeq2110H 2110H

Cost Comparison

CoSeq on RWCU A (2 bag overlay) 2110H on RWCU A

backwash frequency 3 weeks backwash frequency 4 weeks

backwashes per year 17.3 backwashes/year 13

cost of CG19H underlay $75.96 /ft3 cost of 2110H resin $73.50 /ft3

cost of CoSeq $6,750.00 /ft3

bags underlay 4

bags CoSeq overlay 2 bags 2110H 6

resin cost per backwash $13,803.84 resin cost per backwash $441.00

resin cost per year $239,266.56 resin cost per year $5,733.00

RWCU backwashes/HIC 9 RWCU backwashes/HIC 9

cost of RWCU HIC for disposal $350,000.00 cost of RWCU HIC for disposal $350,000.00

# HICs generated from RWCU A 1.93 # HICs generated from RWCU A 1.44

cost for disposal of RWCU A resin $674,074.07 cost for disposal of RWCU A resin $505,555.56

Total Cost per backwash $52,692.73 Total Cost per backwash $39,329.89

Total Annual Cost $913,340.63 Total Annual Cost $511,288.56

Other

Low power H2 injection implemented

2013 (1R14)

◦ Placed in service ~4% power

◦ MFP or one RFP in service

◦ SJAE in service

◦ One Hydrogen Analyzer in service

EHWC – not currently planned.

Requested to reduce H2 injection to

reduce costs.

Other

Issues with Water Chemistry Strategic Plan or

BWRVIP-190 Revision implementation

◦ none

Questions/problems with BWRVIA/ECP model

results

◦ none

Any current or planned deviation

◦ none

Other

Artifacts for CNC or OLNC Pt

Characterization

Perry has two MMS coupons that have seen

1 and 2 OLNC applications which

correspond to the in-vessel artifact scraping

from a capsule which has also seen the same

two OLNC applications. Coupons at

NWT/GEH now for analysis.