PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …
Transcript of PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …
![Page 1: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/1.jpg)
1
Presented by: Steve Kebbe, P.E., Principal Engineer , Clean Water Services Susan M. Gierga, P.E., Murray, Smith & Associates, Inc.
PACIFIC NORTHWEST CLEAN WATER ASSOCIATION2010 ANNUAL CONFERENCE
October 24-27, 2010
![Page 2: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/2.jpg)
2
PRESENTATION OVERVIEW
• Existing Facilities
• Evaluation
• Corrective Measures
![Page 3: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/3.jpg)
3
CLEAN WATER SERVICES TREATMENT PLANTS
![Page 4: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/4.jpg)
4
TWIN 24-INCH FORCE MAINS
![Page 5: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/5.jpg)
5
FORCE MAIN COMPONENTS
Pipelines are plastic with the following exceptions:
• Fittings are ductile iron• Three creek crossings are ductile iron• Air release and vacuum valve assemblies have
metal components
![Page 6: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/6.jpg)
6
CORRODED VALVE COMPONENTS
![Page 7: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/7.jpg)
7
CORRODED THREADS
![Page 8: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/8.jpg)
8
![Page 9: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/9.jpg)
9
INSPECTION OF THE VAULTS
![Page 10: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/10.jpg)
10
A SINGLE AIR RELEASE VALVE
![Page 11: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/11.jpg)
11
TWO AIR RELEASE VALVES
![Page 12: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/12.jpg)
12
TWO AIR RELEASE, TWO VACUUM BREAKERS
![Page 13: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/13.jpg)
13
VENT WITHIN THE VAULT
![Page 14: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/14.jpg)
14
VENT TO A NEARBY MANHOLE
![Page 15: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/15.jpg)
15
VENT TO ODOR CONTROL CANISTERS
![Page 16: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/16.jpg)
16
FINDINGS
• Corrosion within the vaults
![Page 17: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/17.jpg)
17
CORROSION WITHIN THE VAULTS
![Page 18: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/18.jpg)
18
CORROSION WITHIN THE VAULTS
![Page 19: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/19.jpg)
19
CORROSION WITHIN THE VAULTS
![Page 20: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/20.jpg)
20
CORROSION WITHIN THE VAULTS
![Page 21: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/21.jpg)
21
CORROSION WITHIN THE VAULTS
![Page 22: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/22.jpg)
22
FINDINGS
• Corrosion impacting the buried (metallic) components of the pipeline
![Page 23: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/23.jpg)
23
CORROSION IMPACTING THE BURIED PIPE AND FITTINGS
![Page 24: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/24.jpg)
24
CORROSION IMPACTING THE BURIED PIPE AND FITTINGS
![Page 25: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/25.jpg)
25
FINDINGS
• Microbiologically Induced Corrosion (MIC)
![Page 26: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/26.jpg)
26
MICROBIOLOGICALLY INDUCED CORROSION (MIC)
![Page 27: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/27.jpg)
27
MICROBIOLOGICALLY INDUCED CORROSION (MIC)
![Page 28: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/28.jpg)
28
CORROSION 101
Corrosion – The deterioration of a substance (usually a metal) because of an electrochemical reaction with its environment. External Corrosion Introduction to Chemistry and Control, Manual M27, AWWA.
![Page 29: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/29.jpg)
29
CORROSION 101
ATOM
Ion – an atom that has lost or gained an electron.
Oxidation – the process of stripping electrons from an atom.
Reduction – the process of adding electrons to an atom.
![Page 30: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/30.jpg)
30
CORROSION 101
Anion – an ion that has lost an electron (always negative) and therefore has a positive charge.
Cation – an ion that has gained an electron and therefore has a negative charge.
At least two types of IONS:
Positive Ion - Anion
Negative Ion - Cation
![Page 31: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/31.jpg)
31
CORROSION 101
Anodic Process –
1.Positively charged ions (anions) leave the solid surface and enter into solution;
2.Anode – the point where the anion leaves the surface. This is the point where evidence of corrosion appears.
Cathodic Process –
1.Positively charged ions (anions) leave the solution and adhere to the metal surface.
2.Cathode - the point where the current returns to the metal from solution and protects it.
![Page 32: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/32.jpg)
32
GALVANIC CORROSION
Galvanic corrosion can occurs whenever two or more dissimilar metals are in contact with each other while exposed to an electrically conductive liquid (such as sea water or rain water).
One metal corrodes preferentially when in electrical contact with a different type of metal.
The most reactive of the metals becomes corroded, in preference to the less reactive metal, which remains unaffected.
![Page 33: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/33.jpg)
33
CORROSION 101
Four essential elements of any corrosion cell:
• There must be an anode;
• There must be a cathode;
• Both anode and cathode must be immersed in a conducting electrolyte;
• There must be a metallic conductor between the anode and the cathode.
![Page 34: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/34.jpg)
34
THREE DISCRETE PROJECTS
1. Vault Replacement Project
2. Impressed Current Project
3. Buried Metallic Fittings Project
![Page 35: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/35.jpg)
35
VAULT REPLACEMENT PROJECT
![Page 36: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/36.jpg)
36
VAULT REPLACEMENT PROJECT
![Page 37: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/37.jpg)
37
VAULT REPLACEMENT PROJECT
![Page 38: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/38.jpg)
38
VAULT REPLACEMENT PROJECT
![Page 39: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/39.jpg)
39
VAULT REPLACEMENT PROJECT
![Page 40: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/40.jpg)
40
VAULT REPLACEMENT PROJECT
![Page 41: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/41.jpg)
41
VAULT REPLACEMENT PROJECT
![Page 42: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/42.jpg)
42
VAULT REPLACEMENT PROJECT
![Page 43: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/43.jpg)
43
VAULT REPLACEMENT PROJECT
![Page 44: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/44.jpg)
44
VAULT REPLACEMENT PROJECT
![Page 45: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/45.jpg)
45
VAULT REPLACEMENT PROJECT
![Page 46: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/46.jpg)
46
VAULT REPLACEMENT PROJECT
![Page 47: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/47.jpg)
47
GALVANIC ANODE CATHODIC PROTECTION
![Page 48: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/48.jpg)
48
IMPRESSED CURRENT PROJECT
![Page 49: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/49.jpg)
49
IMPRESSED CURRENT PROJECT
![Page 50: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/50.jpg)
50
IMPRESSED CURRENT PROJECT
![Page 51: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/51.jpg)
51
IMPRESSED CURRENT PROJECT
![Page 52: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/52.jpg)
52
IMPRESSED CURRENT PROJECT
![Page 53: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/53.jpg)
53
IMPRESSED CURRENT PROJECT
![Page 54: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/54.jpg)
54
IMPRESSED CURRENT PROJECT
![Page 55: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/55.jpg)
55
IMPRESSED CURRENT PROJECT
![Page 56: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/56.jpg)
56
IMPRESSED CURRENT PROJECT
![Page 57: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/57.jpg)
57
IMPRESSED CURRENT PROJECT
![Page 58: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/58.jpg)
58
IMPRESSED CURRENT CATHODIC PROTECTION
![Page 59: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/59.jpg)
59
BURIED METALLIC FITTING PROJECT
![Page 60: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/60.jpg)
60
SOIL RESISTIVITY/CORROSIVITY
![Page 61: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/61.jpg)
61
BURIED METALLIC FITTING PROJECT
![Page 62: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/62.jpg)
62
BURIED METALLIC FITTING PROJECT
![Page 63: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/63.jpg)
63
BURIED METALLIC FITTING PROJECT
![Page 64: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/64.jpg)
64
BURIED METALLIC FITTING PROJECT
![Page 65: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/65.jpg)
65
BURIED METALLIC FITTING PROJECT
![Page 66: PACIFIC NORTHWEST CLEAN WATER ASSOCIATION 2010 …](https://reader034.fdocuments.in/reader034/viewer/2022052113/62888251d5108d5d1d4921f8/html5/thumbnails/66.jpg)
66
Presented by: Steve Kebbe, P.E., Principal Engineer , Clean Water Services Susan M. Gierga, P.E., Murray, Smith & Associates, Inc.
PACIFIC NORTHWEST CLEAN WATER ASSOCIATION2010 ANNUAL CONFERENCE
October 24-27, 2010