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July 08, 1977 - Image 7

Resource type:
Text
Publication:
Michigan Daily, 1977-07-08

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Friday, July 8, 1977

THE MICHIGAN DAILY

Page Seven

FridaY, July 8, 1977 THE MICHIGAN DAILY Page Seven

Oil starts to
flow through
Alaska
pipeline
ANCHORAGE, Alaska (AP)-
oil began to flow through the
80-mile trans-Alaska pipeline
yesterday, three days after the
line was closed fIor repairs.
The message "Pump Station
No. 1 on line.. Let's keep mov-
ing," passed along the pipeline's
intenal communications line,
announcing the resumption of
the oil flow.
The line was shut down Mon-
day evening when work crews
inadvertently allowed frigid liq-
uid nitrogen to enter a section
of pipe bured 20 feet below
ground near Pump Station No.
8. The nitrogen, 290 degrees be-
low zero, settled in the lowest
portion of an L-shaped section
of pipe, causing severa-six-inch
cracks that extended through the
welds linking the pipe to the
main 48-inch pipe.
Nitrogen escaped through the
leak - enough to fill two miles
of the line. But there was no oil
in the area of the crack. Nitro-
gen is moved ahead of the oil
during startup to purge the line
f oxygen and avoid the possibil-
ity of combustion. The nitrogen
atso aids in identifying leaks.
li was stopped at mile 472,
10 miles north of Pump Station
No 8, after the leak was spot-
ted.
The faculty L-haped pipe,
raled an "elbow," was cut out
aso well as a five-foot chunk of
the main pipe on otl, sides of
the "L" A new section of pipe
was installed and welded into
the line.-
The Mekong River is 2,600
miles long. Its source is in cen-
tral Tibet.
ALL ITE LON
ALL SUMMER LOU
mn.-rot Op.m.- 2a.m.
p P
LL

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