We (successfully) completed another small cathodic protection project with Corrpro. This work was at the truck fill facility at Bryant Army Airfield on Fort Richardson. The underground tanks at the facility store JP-8 (jet fuel), which is then trucked over to fill the Blackhawk helicopters.
Backfilling the trenches
Flush mount test stations during final testing
Each year we have one subcontract in spring and then another in the fall with Corrpro. The subcontracts for CP work are usually ~$20,000, but the field work is easy and Corrpro’s PM, Don Glenn, is great to work with, and most of all – I enjoy CP work.
CP is niche work for a contractor. Seems there are many CP engineering and testing firms, but not many contractors who actually install cathodic protection systems. Its also a niche in that I’ve enjoyed every CP engineering firm and CP engineer/specialist I’ve worked alongside.
Cathodic protection in the petroleum world is simply controlling the corrosion (rust) of a metal surface. Controlling corrosion of buried metal structures is usually accomplished by installing a sacrificial system or impressed current system.
Sacrificial anodes, such as zinc or magnesium, are used on small piping systems or small (~10,000 gallons) underground tanks. The sacrificial anode will corrode before the carbon steel pipe or tank.
More common for larger systems, such as pipelines or tank farms, is installing an impressed current CP system. Which entails drilling approximately 300 feet down and installing a series of hybrid anodes one atop another. Platinum or high silicone cast iron anodes are a couple anode types used in impressed current CP systems. The impressed current systems use a DC power source, most often from a rectifier/transformer connected to AC power. Anodes are connected to the positive side of the rectifier, while the pipeline or other structure is connected to the negative side. The amount of current to protect the structure is divined by throwing and reading chicken bones…CP is a black art, where one engineer’s opinion negates another’s.
Our Ft Richardson project finally has fuel tanks on the ground. Three 20,000 gallon tanks supplying diesel to the three stand-by generators.
Next week, we start welding the supply and return lines to each generator building. Those yellow things are pipe supports we fabricated and painted.
And best timing of all, today we saw our first snowflakes falling.
1st of 3
Alaska Crane at work
Took a relaxing, sunny flight with my ex-girlfriend this Sunday morning. When we arrived at Merrill Field, there was too much ice on the wings to (safely) takeoff. So we prepped the cub, loaded the gear in, and went for coffee at Sagaya’s. What better way to enjoy coffee and tea, than watching the sun rise over the Chugach Mountains and start melting the ice offa your plane. Once the ice was melted, about 0830, we took off for Knik Glacier.
Prime ice berg season in Colony Glacier Lake
The weather was excellent. Sunny with fall temperatures. Which is perfect for me, but the backseater got her feet a little chilled. I’ll install the rear seat heater hose same time as installing skis on the cub…soon. And while there were winds flowing down Knik, Colony and Lake George Glaciers, they was steady winds, not turbulent.
Next flights I’ll practice opening the window to take photos. Instead of shooting thru the window and catching the sun’s glare. My gunner took some primo photos tho.
Fog over Eagle River
Jim Lake against the mountain, Gull Lake (I believe) in the foreground
Flying along the face of the never-ending Knik Glacier
Flying up the Knik Glacier Gorge
Flying across Lake George Glacier
Flying down Lake George Glacier
About to leave the shadows of Lake George River for a sunnier valley
Difficult to line up a photo of the arches without the sun’s glint
Headed down the Gorge
A castle lookin ice berg guarding the outlet of Knik Glacier Lake
Mid Knik River Valley
Sometimes things happen in a way you don’t wish.
So you just take the hook out his back, make sure he swims away hump side up, and keep fishin for Dollies.
This is what to do during off hours when you’re in Kodiak to hydrotest the Coast Guard base jet fuel hydrant piping. Lotsa fun.
Why do they call it a Humpy?
A solo and totally relaxing flight towards Talachulitna River from Merrill Field. 2 hour round-trip, light winds, and lots of sunlight beaming thru the greenhouse glass (Cub’s roof).
Another beautiful flying day at the beginning of fall with many, many planes bombing around Susitna valley.
While crossing Knik Arm northbound, and then returning south over the mouth of Knik River, a half dozen Belugas were chasing something unseen underwater. Those Belugas don’t surface enough to provide good photo opportunities. I usually see the Belugas surface after I’ve flown past, where only a contortionist could turn around and point the camera.
Approaching Eagle River valley
Home-Sweet-Home (AKA Fire Lake)
Northbound between Yentna and Big Su
Crossing the Yentna at Twenty Mile Slough
Alaska rice paddies, between Yentna and 8 Mile Strip
More rice paddies between the Yentna and Beluga Mtn
Confluence of the Yentna and Big Su
Belugas racing up Knik Arm, like Russian submarines
A barely perceptable white whale cruisin beneath the surface between my tire and shadow
Another excellent hike up Mt. Baldy tonight with dog.
After my trip to Boston, I need to enjoy the great outdoors as much as possible. Those
ant farms big cities are claustrophobic.
A whupped, yet happy, Piper
When my ex-girlfriend and daughters return home from Boston, I pray they’re craving the great outdoors too.
I plan to go flying tomorrow morning, provided fog isn’t lying around like this morning.