EGIG- 7th Report EGIG

8/3/2019 EGIG- 7th Report EGIG

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10/33

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560214220.52*788

3 ANALYSES AND RESULTS3.1 Definitions! *-:%"9*7 """% "* "" "! 7*"* "* ) %*%* 7* "!*"!*"*7*)!%!"!"

!"""% -*" "!7" 9*7 "!"*" -

*%"*%!77>%"**--"

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*""")**777>%"!"!%*!7"*"!

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11/33

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560214220.55*788

3.2.1 Total length!"*""!*7*"*"'%*""%'

4220 "! "*""! ) 546056 " 5445?3 422; ! 9*"* *7"! "*"

"!*7"!"!*)5*9%"*""%

4"*3

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

20,000

40,000

60,000

80,000

100,000

120,000

140,000

Length[km]

59*

5 !*) "! % "! *7 "* " ' )!%! !

7%""%!"!560


12/33

0"!'1*" '23#2224

560214220.54*788

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

20,000

40,000

60,000

80,000

100,000

120,000

140,000

Length[km]

Unknown

5"

5" - 10"

11" - 17"

17" - 23"

23" - 29"

29" - 35"

35" - 41"

41" - 47"

47"

5)

8!*)"!"*)-""!*56?;15608"!*"!%*"%"*

* % * 7%" * % - *-9 )!%! "!" "! "

*"*

"%-"!560;I5638"!5665)!%!*"%-

"!"*%"**7)'-

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

20,000

40,000

60,000

Le

ngth[km]

Unknown

Before 1954

1954 - 1963

1964 - 1973

1974 - 1983

1984 - 1993

1994 - 2003

After 2004

58*


13/33

0"!'1*" '23#2224

560214220.58*788

; !*) "!"%* " -" *"! *) "!*" %**

%*")"!%7%7*"!""*422;**7"!")"!

*)%*""%-*-9!*7*"!"!"*"**9

"!"%*""*)"%!**

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

20,000

40,000

60,000

80,000

100,000

120,000

140,000

Length[km]

Unknown

Coal tar

Bitumen

Polyethylene

Epoxy

Other

5C*

100 cm

Under water

5(.


14/33

0"!'1*" '23#2224

560214220.5;*788

?!*)"!""!*"%**)"!%


15/33

0"!'1*" '23#2224

560214220.5 75 bar

5$6

3.2.2 Exposure6 !*)"! %*7 "!"*""* *"1GH*"!*560214220"! "*""*)85


16/33

0"!'1*" '23#2224

560214220.5?*788

3.3 Failure frequencies analyses!%%"**77"%"*"!%*77>%7"*

"!*"*@"!"*""*"!""*"!-*7%"

3.3.1 Number of incidents'"!?"!'*")!%!%*9"!*56021422;"*"*75548%")

%*'"!""!;6%")*"-"!'-)!%!-

"!"*"-*7%""*55047*"!*56021422052!*)"!-*7

%"55"!%"9-*7%"

"!*!**%*-%*'-""!""!-*7

%"%"!*!"!""!%

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

10

20

30

40

50

60

Numberofincidents[-]

59#"


17/33

0"!'1*" '23#2224

560214220.50*788

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

200

400

600

800

1,000

1,200

Numberofincidents[-]

599."

3.3.2 Primary failure frequencies! 77>% "!"*7"! -*7 %" 55)"! *

9-"! %**"*"" * 6* "!*"

"!-*7%"9**"!"*""*

' ! %*"! 7 7>% *7 77"* "! "*" *

560214220"!*%**"*"!?"!'*"56021422;"!**7"!"% 280*9 "!"*560214220

!" *) "! "! 7 7>% *7 2;2 *" "! * *7 56021422; ?"! '

*"

! 7 7>% *9 "! " 79 25; 7* 422814220 * "! *7 "!

7 7>% *9 "! " * !*) "! *9 7" 7*% *9

%"*"!77>%*9"!"2557*4220!"*)

"!"!77>%*725;%%"*9"!"


18/33

0"!'1*" '23#2224

560214220.53*788

54 58 !*) "! 9*"* *7 "! 7 7>% *9 "! "

*7*"!"79)"!%*7%"9"6%"!% ! 7 7>% *9 "! " *

%7*230%" 5222 5602"* 280%" 5222 4220

! % % - 7%"* *7? 23?7* "!

*56021560;"*25;7*"!*422814220

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Frequencyper1000km.yr

Primary failure frequency: average

Primary failure frequency: 5 year moving average

59).*1

58!*)"!%*7%"97*"!77>%

%*7% "9 " %"" "*%%*" ( "!""! " "!* "!

"! %*7% "9 1 "! "!" "! %"" % 7 "! >"" *7

7*"* % * %%" %*7% "9 "! *"* "* !9

*) "-"*! "* "!""! "-"* *7 "!77>%7**)

.**L)


19/33

0"!'1*" '23#2224

560214220.56*788

2004

1974

1981

1988

1995

2002

1972

1979

1986

1993

2000

2007

1970

1977

1984

1991

1998

2005

1975

1982

1989

1996

2003

1973

1980

1987

1994

2001

1971

1978

1985

1992

1999

2006

1976

1983

1990

1997

Year [-]

0

0.2

0.4

0.6

0.8

1

1.2

1.4


Primary failure frequency: average

Primary failure frequency: 5 year moving average

598*1.3(F

'4220"! 77>%*9"!"*)280%"5222

)"!6


20/33

0"!'1*" '23#2224

560214220.42*788

Externalinterf.

Corrosion Constr.defect /

Mat.Failure

Hot tapmade by

error

Groundmovem.

Other /Unknown

Cause

0

10

20

30

40

50

60

Percentage%

59C"

5


21/33

0"!'1*" '23#2224

560214220.45*788

5?!*)"!77>%%7*"!


22/33

0"!'1*" '23#2224

560214220.44*788

Externalinterf.

Corrosion Constr.defect /

Mat.Failure

Hot tapmade by

error

Groundmovem.

Other /Unknown

Cause

0

0.05

0.1

0.15

0.2

0.25

Frequencyper1000k

m.yr

Unknown Pinhole/crack Hole Rupture

59"0G4

50 !*)""7%**9""! %*""*%

"

' - 8 *99) 9*7 "! :* %"9" % %" )!%! "*

""7%%"

%"9" .%"GAH

83

*)* 6

.-%)* 6

%" 6

)* 3

"8.6"*

3.3.3 Secondary failure frequencies!%*77>%%%"-9"!-*7%"-"

" * ." " * 7* "! * " "* *

"%***7%*"%"*%

! %%"* *7 %* 7 7>% " "* *"" "! 7% *7

N"L""!*7%*9"%*"!%%*>%*7

"!%"

! "% *"* " 1 %"* "* "% ) *

7%"!77>%!"-*""!"*"%*%""!"-

"!"!7%%*"-"""!*"


23/33

0"!'1*" '23#2224

560214220.48*788

*"!%"!%*77>%!9-%%"%%*"*"!

7**)"@

- " "7%@ "! " *7 "! "! "! *7 %*9 "! )"!%

- ***@"!*7%*"%"*"!"*7%*""!)"!%- *"%"*7%"B"7@"!*7%*"%"*- /*""-*@"!"*7"!- **9"@"!"*7"!- "!*)@%

* * *9" *"! * *) % *"! * 9" %*"*

*"

3.3.3.1 Relationship between external interference, size of leak and design parameter53"*42!*)"!"*!-")"!%*>%*7"!%"%-

""7%"!"*7"!"!"!*7%*9"!)"!%

"!*!"!!""""-*"%"!""!"

%*""!*!*>"""9%*"*-")"!9-"

5 5-10 11-17 17-23 23-29 29-35 35-41 41-47 47

Diameter class [inches]

0

0.1

0.2

0.3

0.4

0.5

0.6

Frequency

per1000km.yr


59$"06/G4


24/33

0"!'1*" '23#2224

560214220.4;*788

< 80 80-100 > 100

Cover class [cm]

0

0.2

0.4

0.6

0.8

Frequencyper1000km

.yr


593"06/G4

.

5 5-10 10-15 15-20 20-25 25-30 > 30

Nominal wall thickness [mm]

0

0.1

0.2

0.3

0.4

0.5

0.6

Frequencyper1000km.y

r


5)#"06/G40

4

* "! 7 * %*%* % - ) ! 7" %*%* "!"

" * 9- "* " "7% "! "

! % - - "! 7%" "!" " % - * !**

*)*"!!%**"!""!"%*7"*)

"*"!)"!%


25/33

0"!'1*" '23#2224

560214220.4


26/33

0"!'1*" '23#2224

560214220.4?*788

5 5-10 10-15 15-20 20-25 25-30 > 30

Nominal wall thickness [mm]

0

0.02

0.05

0.08

0.1

0.12



5)8"0/G404

***!-"7"!"!*"%**%*7%"5% )! 44 !*) "! "* -") "! " *7 %*" "! 7

7>% * "! 7 " % - %*% "!" "! * )"!

-"%*"%*"!9!!77>%*9"!)!**%*9-"!

"-!77%"*7%*9!8;

***!***7"*"**7"!***"%"*7

"! ) "!% -" "! "! "! %** ) "! ** "! 7

48 ""!7*"*7 "! %!*>%****

"!% " * -7* % %" "!7* ! * %!% "* -

"%"-7*7.*"%"9 " - *) "* *9%*"!

*-*7 %*** %! %"!*% *"%"* %*"' %"*-

%***"*-"%"""

!%"**7%***!9-%*-'@"%***"%***

%***)"!*)%+"*4220"!"35A5


27/33

0"!'1*" '23#2224

560214220.40*788

3.3.3.3 Relationship between construction defect/material failure, size of leak andyear of construction class

4; !*) "!" "! * !9 !! 7 7>% "* %*"%"*

7%"B" 7 %!**% *9" "!*!" "* !9 " %%*"%"*7%"B"7

Before1954

1954-1963

1964-1973

1974-1983

1984-1993

1994-2003

After2004

Year of construction

0

0.05

0.1

0.15

0.2



5)C"0=/G

4*

3.3.3.4 Relationship between hot tap made by error, size of leak and diameter class! " E!*" " -*F "!" %*%"* ! - - * "* !!

"* )!%! ! - %*%" "7 *"!

4%)!%!!*)"!""!*7*%*"*"*

$*7 !* -" * "*$ *7 !* % )"! 9

"


28/33

0"!'1*" '23#2224

560214220.43*788

5 5-10 11-17 17-23 23-29 29-35 35-41 41-47 47


0

0.01

0.02

0.03

0.04

0.05

Frequencyper1000km

.yr


5)("0"*/G4

3.3.3.5 Ground movement**9"*-7*0A*7"!"*"%""!"-

4? !*) "! "*! -") * *9" $ *7 " %

* *9" %" % "! $ *!*)"!" "

* 9- 7* * *9" "! " * *9" "%""*"!%7%*"%!%%*"**

5 5-10 11-17 17-23 23-29 29-35 35-41 41-47 47


0

0.01

0.02

0.03

0.04

0.05

Frequencyp

er1000km.yr


5)B"0./G4


29/33

0"!'1*" '23#2224

560214220.46*788

"!7*"*%*-*""!%"%"*"*-"**"*"*

*"""%*"!-1%*7E*&*9"F

!"77"-1%*7**9"!9-"7!*)40

Unknown Dike break Erosion Flood Landslide Mining River Other0

10

20

30

40

50

60

5)""&.!

3.3.3.6 Other and unknown causes!%7*"!%"*E"!*)F!"

!-1%!""*"4


30/33


31/33

0"!'1*" '23#2224

560214220.85*788

Unknown

Client Staff Contr . Dis tr icomp.

Landown.

Online

insp.

Patrol Riverpolice

Public Other

Type of detection

0

5

10

15

20

25

30

35

40

45

Percentageofinciden

ts[%]


5)3

3.4.3 Ignition probability*""*"9")!%!*""!%*>%*7"!%"

'"!*560214220*;;A*7"!%*%""!'"-

"

'"**"!"%*7*"**%!'"-9"!

**"""*9""!-")"*$-;""!"**--""

$*7 '"**--"GAH

.!*1%% ;

/* 4

#" 58

"C""4*

-


32/33

0"!'1*" '23#2224

560214220.84*788

3.4.4 Injuries and fatalities

'9*"""%7*"*-*" 77>%%*7 %" **7

"! " %" 7*"" % : 9 7"" ' "! ' "-

"!5504%"*7)!%!55%"!:*7""

""7%"!%*7"!:*"*7%"!*"""!*"%*7

"!9%*7"!")***>"%*""!

%*"*9*""!"7%"**%"**7


33/33

4 CONCLUSIONS ' ! " "! * %" "-

*%**777"*%*"*)%*%"%""**"

582222*79!"*"*)!%!"!"!*7

"**7*"*85%>"*280%"5222*9"!*

5602"*4220

! % )!%! " "! 9 %"

7>% *9 "! " 25; %" 5222 !

7>% *"?"*)"!"!**""!7"*7"!"-

56021560;

!77>%!9-%*9"! "!*!"!" *7%"*

!*)%"

!:*%*7%"""7%%!*

"

%*"%"!!!77>%"*%***/"!

"!%"%*"%"'%""**9"%

**:*7%*"!*%%%*7%***7

5 REFERENCE?"!#*"*7"!*.%""*56021422;%-422

Documents

EGIG- 7th Report EGIG