1054L 1206L/1212L (Heartland Project): Potential hazard...

AltaLink transmission line – 1054L and 1206L/1212L (Heartland Transmission Project): Potential hazard warning – spacer damper failure

As part of our ongoing commitment to safety, AltaLink will be increasing the frequency of its inspections along the 1054L and 1206/1212L transmission lines, constructed as part of the Heartland Transmission Project. AltaLink is increasing inspections along 1054L and 1206/1212L lines to monitor the condition of a piece of equipment called a spacer damper. The Métis Nation of Alberta (MNA) was consulted on the Heartland Transmission Project development and the MNA’s members may be conducting Traditional Land Use activities where the 1054L and 1206/1212L lines will require more frequent inspections. We are asking the MNA to communicate to their members the potential safety issue related to the spacer dampers.

A spacer damper connects two or more wires at intervals between transmission towers to reduce movement in adverse weather conditions by preventing the wires from contacting and damaging each other. Spacer dampers are attached to the wires with clamps and secured by bolts. The picture below is an example of a spacer damper installed on a transmission line.

AltaLink is increasing inspections because installed spacer dampers of this type have failed on AltaLink transmission lines. Clamp bolts on the failed spacer damper did not remain secure and the clamp released from the wire, causing a portion of the spacer damper to fall to the ground. The picture below is an example of a spacer damper in a failed condition.

AltaLink will be inspecting spacer dampers on an ongoing basis and will address any issues as required. Inspection activities on Crown lands may include low‐level helicopter flight inspections, ground level inspections and crews accessing the line from service trucks. There is a possibility that a spacer damper, or parts of a spacer damper, could fall to the ground from the overhead transmission wires. AltaLink asks that the MNA members who have access to the right‐of‐way to please avoid walking along or under the right‐of‐way at the following locations where the spacer dampers have been installed on Crown lands for the 1054L and 1206/1212L lines (also see the corresponding Strip Mosaic [SM] maps enclosed):

SE‐28‐56‐21‐W4 (SM5) NE‐28‐56‐21‐W4 (SM5) SE‐32‐55‐22‐W4 (SM17)

NE‐29‐53‐23‐W4 (SM9) SE‐29‐53‐23‐W4 (SM9)

If circumstances are such that you must cross and/or walk along the right‐of‐way, please avoid crossing under and walking in areas below the spacer dampers. If the MNA members believe they have found pieces of spacer dampers on the ground, or notice a spacer damper that appears to be in the failed position outlined and shown above, please contact AltaLink at 1‐877‐380‐0303 or [email protected] and AltaLink will conduct further inspection and investigation. Please do not pick up or move the pieces because seeing them in their original location will allow AltaLink to more easily identify the line section from which the spacer damper fell.

AltaLink apologizes for any inconvenience this may cause and appreciates your help in this communication and letting us know if your members see anything unusual regarding the spacer dampers. Thank you for your cooperation in advance as we work to maintain the safety of the transmission system. Sincerely,

Kris Gladue Manager, Aboriginal Relations AltaLink O: 780‐948‐4035 | C: 780‐717‐1639

NorthSaskatchewanRiver

SturgeonRiver

KimuraLake

1054L

1212L

857L

1061

L

706L

807AL

708AL

776L

1120L

856L

942L

861L

706AL

943L

D80

7L

807L

808L

1206L

708L

735L

856L /857L

706L/ 776L

776L

/ 857

L

943L /1120L

942L /1061L

943L /1054L

942L

/11

20L

1061L/ 1120L

943L / 1061L

942L /997L

1206

L / 1

212L

1054L/ 1061L

UV643

UV38

UV28

UV15

UV644

UV830

UV825

UV829

Twp56Rge22 W4Twp56Rge21 W4

Twp55Rge22 W4

Twp55Rge21 W4


STRATHCONACOUNTY

STURGEONCOUNTY

Scotford

Amelia

20 21 2223 24

34 35 36

2930

31 32

20

25262728

12

151617

32 33 3435

5

10 11 12

22

272829

8 9 10

24

252627

234

1314

19 20 21

30

35 36

12

12

1718

19

2829

34 35

8

141516

25

32

34

9 10 11

20

252627

36

5

17

22 23 24

33

2728

33 34

24

29

19

2526

35 36

21 2223

32 33

16

161718

23

32 33 34

3

1314

2829

36

7 8 9

15

24

2526

31

45

11 12

20 21 2223

5

141516

21 22

32 33

12

11 12

13

272829

34 35

6

7 8

13

23 24

30

31

34

9 10

20 21

26

36

SM1

SM2

SM3

SM4

SM5 SM6

³Legend

0 2.5 5 Kilometres

0 1.5 3 Miles

STRIP MOSAIC

1054L/1061L Affected Line SegmentsAlthough there is no reason to believe that there are any errors associated with the dataused to generate this product or in the product itself, users of these data are advisedthat errors in the data may be present.

NO: DRAWN: MR - ALFILE NO.: XXXXXXXREVISION: 0.00.AL FOLDER: 1064_1065_160429DATE: 2016-05-09

00

LEGEND SI1Affected Line Segments: GIS

Affected Line Segments: Land

! Hamlet or Locality

Existing Transmission Line

Mapsheet

Road

Municipal or County Boundary

Water Body

³Legend

0 0.25 0.5 Kilometres

0 0.25 Miles

STRIP MOSAIC

1054L/1061L Affected Line SegmentsService Layer Credits: © Harris Corp, Earthstar Geographics LLC Earthstar Geographics SIO © 2016 Microsoft Corporation Although there is no reason to believe that there are any errors associated with the dataused to generate this product or in the product itself, users of these data are advisedthat errors in the data may be present.


00

LEGEND SM5Existing Structure

Affected Line Segments: GIS


Existing Transmission Line' Wellsite

Pipeline

Road


Affected Line Segments: Land Gate Required°± Public Road One Directionª«¬̄ Public Road Two Directionc Other

Proposed Key Access RoadAccess Inside the Right of Way One Direction

Access Inside the Right of Way Two Direction

Alternative Access Build Outsite Right of Way

NorthSaskatchewanRiver

SturgeonRiver

787AL

787L

747L

943L

915L

1054L

997L

781L

1212L

1061L

215L

807AL

706L

708AL

776L

946L 947

L

920L

1058

L

914L

921L

1120L

746BL

761A

L

737L

709L

605L

942L

822L

705L

731L

D80

7L

D782L

746L

761L

897L

908L

738L

807L

905L

862L

707L

694L

1056

L91

0L

636L

898L

1055L1043L909L

861L

1098

L

1206

L78

0L

735L

874L1209L

708L

1202L

700L

792L

726L

747L/ 898L

856L/ 857L

706L /776L

776L

/ 857

L

943L/ 1120L

731L/ 865L

737L

/76

1L

942L/ 1061L

908L

/10

59L

942L

/11

20L

1061

L/ 1

120L

761L

/92

1L

910L

/ 914

L

909L /1044L

915L

/ 947

L

943L /1061L

908L

/10

58L

1206

L /

1212

L

780L

/ 897

L

942L /997L

908L/ 909L

946L

/94

7L

920L / 9

21L

1054L /1061L

UV2 UV830

UV216

UV15

UV643

UV15

UV21

UV21

UV14

UV37

UV803

UV825

UV28

UV38

UV16A

UV14

UV37

UV628

UV28

UV28

UV830

UV16

UV2 UV216

UV16

UV627

UV21

UV642

UV28A

UV630

UV14

UV216

UV15

UV824

UV629

SherwoodPark Freeway

WilshireBoulevard



Twp56Rge21 W4


Twp54Rge23 W4



Twp53Rge23 W4

Twp53Rge22 W4

Twp53Rge21 W4



Twp55Rge21 W4

Twp57Rge25 W4Twp57Rge24 W4 Twp57Rge23 W4

Twp57Rge22 W4 Twp57Rge21 W4


Twp52Rge23 W4

Twp52Rge22 W4

Twp52Rge21 W4

Twp51Rge25 W4

Twp51Rge24 W4Twp51Rge23 W4 Twp51Rge22 W4 Twp51Rge21 W4

STRATHCONACOUNTY

STURGEONCOUNTY

Duagh

Coronado

Akenside

Lamoureux

Griesbach

QueensdalePlace Lindale E of Edmonton

Ardrossan

Scotford

Josephburg

Amelia

Cardiff

Carbondale

Excelsior

Namao

LancasterPark

CookingLakeSouth Cooking Lake

TrevithickBretona

Half MoonLake

UncasWhitecroftHulbert Crescent Wyeclif

SM1 SM2SM3

SM4

SM5

SM6

SM7

SM8

SM9

SM10

SM11

SM12SM13

SM14 SM15SM16

SM17

SM18

SM19

³Legend

0 5 10 15 Kilometres

0 4 8 Miles

STRIP INDEX

1206L/1212L Affected Line SegmentsAlthough there is no reason to believe that there are any errors associated with the dataused to generate this product or in the product itself, users of these data are advisedthat errors in the data may be present.


00

LEGEND SI1Affected Line Segments: GIS


! Hamlet or Locality

Existing Transmission Line

Mapsheet

Road


Water Body

³Legend

0 0.25 Kilometres

0 0.1 Miles

STRIP MOSAIC



00





Pipeline

Road


³Legend

0 0.25 Kilometres

0 0.1 Miles

STRIP MOSAIC



00





Pipeline

Road


2016_05_09_MNA_Heartland spacer dampersHeartland_Crown Land_160506.pdf

1054L 1206L/1212L (Heartland Project): Potential hazard...

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