WET-NZ Ocean Testing 
at the Northwest National Marine Renewable Energy Center 
Issue: # 5
August 17, 2012

Greetings from the Coast of Oregon!

 

It's been another busy week with final fittings, systems checks, and launch preparations, but everything continues to come together as planned.  We're on schedule for deployment next week and will continue to move forward over the weekend, so stay tuned for another update on Monday.  In case you missed it, check out the Recent Updates to see what's been happening over the last few days.

 

Best Regards from your Deployment Team:

 

Justin Klure            Steve Kopf            Patrick Branje

Dry Tests Successful 
All Systems Go

 

On Thursday, we conducted dry testing of the WET-NZ and Ocean Sentinel to validate the integrated system performance.  Led by Ean Amon and Terrie Lettenmaier, the NNMREC-OSU technical team assessed the performance of both the operations and safety systems during the testing.  After connecting the WET-NZ to the Ocean Sentinel via the umbilical cable, the team conducted basic systems and safety checks to ensure the devices were properly connected and operating.

 

The Port of Toledo crane was used to actuate the WET-NZ float (i.e., move it up and down) to simulate the effect of passing waves.  As expected, the WET-NZ produced a small amount of voltage, the current was transmitted through the umbilical cable to the Ocean Sentinel, and the power was dissipated in the load bank.  With the dry tests successfully completed, we're one step closer to deployment!

NNMREC Sets Anchors
Mooring System Ready for Ocean Sentinel

 

After multiple days of offshore installation, the Ocean Sentinel mooring system is in place at the NNMREC ocean test berth. According to NNMREC Test Berth Manager Sean Moran, conditions at the project site were a little rough during the installation, but manageable. "We had solid swells with some wind chop, but the crew handled it with no problem and the mooring system is good to go."  The mooring system, which includes three concrete block anchors weighing four tons each, was transported to the project site aboard the Pacific Storm.  At the site, Captain Yogi Briggs and his crew deftly deployed the massive anchors, lowering them one at a time off the back of the vessel and setting them into place on the seafloor.  Finally, they connected the mooring lines from the anchors to surface buoys to hold them in place.  With its mooring system installed and dry tests complete, the Ocean Sentinel is ready for deployment!
anchor deployment
Final EA for Test Berth
DOE Cleared to Fund NNMREC Test Facility

 

On Wednesday, August 15, the U.S. Department of Energy (DOE) issued a Final Environmental Assessment (EA) for its funding of the NNMREC ocean test facility.  In addition to authorizing the DOE funding, issuance of the Final EA marks the conclusion of the regulatory process for NNMREC's ocean test berth.  Many thanks to all those involved in this process, and congratulations to NNMREC! 
Weather Outlook
Weaker Wind & Waves Over the Weekend 

 

Most of the coast is experiencing southerly winds between 10 - 15 knots, 5 - 6 foot swells and relatively cool temperatures, due to a strong upper level ridge of high pressure centered over the eastern Pacific Ocean. Southerly winds should continue through Sunday, with both wind speed and swell size decreasing. A low pressure circulation just off the Southern Central California coast is also influencing conditions on the Oregon Coast. This low generally blocks the progression of other systems, and its track and position will influence the weather for the next 4 - 5 days so we'll be keeping a close eye on it.  Special thanks to Phil Barbour at OSU's College of Earth Ocean and Atmospheric Sciences for putting together a coastal weather outlook for us.

Today's Updates
Dry Tests Successful
NNMREC Sets Anchors
Final EA for Test Berth
Weather Outlook
 
Recent Updates 
 RecentUpdates
 
Regional Forecast

 

An upper level ridge of high pressure in the eastern Pacific will maintain 10 - 15 kt winds out of the south and 5 - 6 ft. swells out of the west, with both wind and waves decreasing.  A low pressure circulation off the coast of California should maintain these conditions through Sunday.  

 


Ocean Conditions
NOAA Buoy
Station 46050 
20 nm West of Newport
Wave Ht 4.3 ft
Avg Period 7 s
Wave Dir WNW

 

Wind Sp 7.8 kts
Gusts 9.7 kts
Wind Dir S

Air Temp 50.7 F
Pressure 30.02

 

Water Temp 52.7 F