Islandwide Outage Triggered After Protection Relays Failed to Isolate Tumon Line Fault

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Guam -2 line faults along Ypao Road in Tamuning triggered a series of events Wednesday night that led to an islandwide power outage.

A number of residents reported seeing a 2 bright flashes of  light along Yapao Road in Tamuning.

The first coming from a power pole on Ypao Road next to the SDA clinic just after 7 pm. And then a much larger and brighter flash about 7:15 pm that came from a power pole across the street from the Days Inn.

Guam Power Authority Spokesman Art Perez explained that the first line fault was detected by the 2 base load Cabras Units, 3 and 4, and that prompted them to shut down taking 15 of the island’s more than 40 circuits off line.

At that point, Perez says that protection relays at the Tamuning Substation should have kicked in to isolate the outage. But they did not.

“What didn’t happen, it failed to isolate,” said Perez on the K-57 Breakfast Show this morning, “and some of the protection relays did not work.”

About 7:15 pm, the second line fault along Ypao Road occurred, and because the protection relays didn’t work, the Tanguisson Power Plant detected the second line fault and took itself off line and an islandwide power outage ws the result.

Hear GPA Spokesman Art Perez on the K-57 Breakfast Show

Perez said the second line fault occured at a time when the system was already under stress from the first fault.

GPA’s “defenses were pretty vulnerable at that time … taking off  that much load at one time.”  In addition, the 2 line faults occurred at a time when the system was under peak demand with so many residents home, cooking dinner, watching TV.

Power was eventually restored to Tumon, Barrigada, Dededo and Hagatna just before 9 am. Full power was restored by 2:30 am this morning.

The cause of the protection circuit failure remains under investigation, as well as what caused the initial fault.

However, GPA officials on the scene along Ypao Road this morning found a dead brown tree snake next to the power pole near the SDA Clinic which might have been triggered the first line fault, leading to the second line fault and triggering the blackout. But no final determination has been made.

 

 

 

Guam-CNMI Visa Waiver Program Rules Delayed ‘Months’

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Matt Kaye/Berns Bureau

 to me, parroyo, isaac, shawn, bgaeth, mterlage

show details 6:40 AM (36 minutes ago)

Hey guys,

Now, we’re talking about some real delays…

All the best,
Matt

GUAM-CNMI VISA WAIVER REGS TO TAKE ‘MONTHS’   PNC MDK
11-04-10
 
ANCHOR LEAD:  HOMELAND SECURITY OFFICIALS RECENTLY TOLD CONGRESSIONAL STAFFERS IT COULD BE QUITE A WHILE BEFORE A FINAL RULE IS EVER PUBLISHED ON THE JOINT CNMI-GUAM VISA WAIVER PROGRAM.  PNC WASHINGTON CORR. MATT KAYE REPORTS…
 
M.K. HILL SOURCES SAY A RECENT MEETING BETWEEN DHS OFFICIALS AND CONGRESSIONAL STAFFERS PRODUCED SOME DISCOURAGING NEWS.
            DHS PUBLISHED AN INTERIM FINAL RULE ON THE JOINT GUAM-CNMI VISA WAIVER PROGRAM OVER A YEAR AGO.
            THE PROGRAM’S FINAL OUTLINES WILL DETERMINE WHETHER CHINESE AND RUSSIAN TOURISTS WILL BE COVERED UNDER VISA-WAIVER AUTHORITY.
            DHS SECRETARY JANET NAPOLITANO HAS ALLOWED THESE VISITORS TO BE ‘PAROLED’ INTO THE CNMI—BUT NOT GUAM–ON A CASE-BY-CASE BASIS SINCE LAST YEAR.
            BUT NOW, SOURCES IN THE LATEST MEETING WITH DHS OFFICIALS SAY THE ADMINISTRATION TOLD CONGRESSIONAL STAFFERS IT WILL BE ‘MONTHS OR LONGER’ BEFORE THERE’S A FINAL REGULATION.
            THE ISSUE, INVOLVING SECURITY AND POSSIBLY EVEN POLITICAL CONCERNS, HAS BOUNCED BACK AND FORTH BETWEEN DHS AND THE STATE DEPARTMENT, DRAWING THE FRUSTRATION OF GUAM OFFICIALS FROM GOVERNOR FELIX CAMACHO TO CONGRESSWOMAN MADELEINE BORDALLO…WHO ALSO RECENTLY MET WITH DHS TO PRESS FOR ACTION.
 

O.C. MATT KAYE, FOR PNC NEWS, WASHINGTON

—————————————–
Matt Kaye
Berns Bureau Washington

mkaye22675@aol.com
(202) 621-0885 P  (NEW)
(301) 395-8556 C

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