Particle Monitor Experience Tracking Corrosion Product Transport - - PowerPoint PPT Presentation

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Mar 08, 2024 44 likes •185 views

Particle Monitor Experience Tracking Corrosion Product Transport from an Air-Cooled Condenser Gary Hoffman PacifiCorp 2 nd ACC Users Group Meeting Pueblo, CO September 28-29, 2010 Particle Monitor Experience Currant Creek Plant

SLIDE 1

Particle Monitor Experience Tracking Corrosion Product Transport from an Air-Cooled Condenser

Gary Hoffman – PacifiCorp

2nd ACC User’s Group Meeting Pueblo, CO September 28-29, 2010

SLIDE 2

Particle Monitor Experience

Currant Creek Plant

80 miles South of Salt Lake City 2x1 HRSG with GEA Air-cooled condenser Built in 2005 2, 145 MW 7FA CTs & 1, 250 MW Toshiba steam turbine

SLIDE 3

Air-Cooled Condenser

GEA Air Cooled-Condenser
1.5 MM lbs/hour steam
1097 BTU/lb duty
6.52” Hg back pressure
Inlet at 87°F

Full-flow Pall condensate filter used downstream of condensate pumps

SLIDE 4

Equipment Used

Chemtrac Particle Monitor (PM 2500) Hobo 4 channel data logger (made by Oneset)

SLIDE 5

4 8 12 16 20 20 40 60 80 100 120 9/10/09 9/11/09 9/12/09 9/13/09 9/14/09 9/15/09

Particle Index (4-20 mA) MW Date

Gadsby Unit 3 Corrosion Transport

Unit 3 Load Particle Index

Cycling gas plant in Salt Lake shows iron transport during every start-up

SLIDE 6

Observations from Cycling Plant (Gadsby)

Particle Monitor is very responsive to small changes in load or corrosion product transport. Corrosion product transport is heaviest at start‐up. Corrosion product transport levels out within 2‐5 hours of start‐up or load change. Can similar findings be observed downstream

f an air‐cooled condenser at the Currant Creek

Plant?

SLIDE 7

Chemistry & Particle Monitor Set-up

SLIDE 8

Location of Particle Monitor

SLIDE 9

Particle index and unit load – no strong correlation

SLIDE 10

Better correlation with flow and particle counts.

SLIDE 11

Green is particle monitor index, Blue is flow over 6 days time

SLIDE 12

Correlation between feedwater flow and particle monitor index.

SLIDE 13

Conclusions

No real correlation between dissolved

xygen, pH or any other chemistry data and

particle monitor index. Fairly strong correlation between flow and particle monitor index. Unsure how we will use this data in the future, but would welcome advice and input.

SLIDE 14

Particle Monitor Experience Tracking Corrosion Product Transport - - PowerPoint PPT Presentation

Particle Monitor Experience Tracking Corrosion Product Transport from an Air-Cooled Condenser

Gary Hoffman – PacifiCorp

Particle Monitor Experience

Currant Creek Plant

80 miles South of Salt Lake City 2x1 HRSG with GEA Air-cooled condenser Built in 2005 2, 145 MW 7FA CTs & 1, 250 MW Toshiba steam turbine

Air-Cooled Condenser

Full-flow Pall condensate filter used downstream of condensate pumps

Equipment Used

Chemtrac Particle Monitor (PM 2500) Hobo 4 channel data logger (made by Oneset)

Cycling gas plant in Salt Lake shows iron transport during every start-up

Observations from Cycling Plant (Gadsby)

Particle Monitor is very responsive to small changes in load or corrosion product transport. Corrosion product transport is heaviest at start‐up. Corrosion product transport levels out within 2‐5 hours of start‐up or load change. Can similar findings be observed downstream

Plant?

Chemistry & Particle Monitor Set-up

Location of Particle Monitor

Particle index and unit load – no strong correlation

Better correlation with flow and particle counts.

Green is particle monitor index, Blue is flow over 6 days time

Correlation between feedwater flow and particle monitor index.

Conclusions

No real correlation between dissolved

particle monitor index. Fairly strong correlation between flow and particle monitor index. Unsure how we will use this data in the future, but would welcome advice and input.

Questions?

Thank You for any advice or input and for your attention!