Installation/Engineering Costs for Submersible Power Cable
Installation/Engineering Costs for Submersible Power Cable
(OP)
I am trying to make a ballpark cost estimate for a project to design and install approximately 4,000' of submersible power cable with a design voltage of 7.2 kW. Cable will be layed in/on an old submerged roadbed to the island in question with average water depth of 4'. Are their rule-o-thumb unit costs for this type of construction? And what % would be reasonable to use to apply to an estimated construction cost to estimate design engineering.






RE: Installation/Engineering Costs for Submersible Power Cable
Keith Cress
kcress - http://www.flaminsystems.com
RE: Installation/Engineering Costs for Submersible Power Cable
On the other hand, call up your cable supplier and ask if he will guarantee the cable for such installation and let er rip!
RE: Installation/Engineering Costs for Submersible Power Cable
RE: Installation/Engineering Costs for Submersible Power Cable
I would recommend talking to a cable installer or manufacturer to get pricing.
RE: Installation/Engineering Costs for Submersible Power Cable
How will you deploy it from the reels? How will you get the reels and the tooling (to either end) to deploy?
How will you propose splicing it at each joint? 4000 feet of 7.2 kilovolt-capable of submerged cable (three conductor ?) does not come on one reel.
RE: Installation/Engineering Costs for Submersible Power Cable
All great questions. On the island end, power pole to tie to is approximately 100' on shore. On mainland end, we would be working from a parking lot so should have a significant staging area. I would envision that reels/tooling that would be transported to the island would be via boat/barge. I am not familiar enough with this kind of construction to answer the splicing question.
Basically, I am looking for a ballpark electrical engineering design cost to assign to the RFP, and thought the best way was to gauge construction cost and apply a percentage.
Any help you could provide would be appreciated.
RE: Installation/Engineering Costs for Submersible Power Cable
Keith Cress
kcress - http://www.flaminsystems.com
RE: Installation/Engineering Costs for Submersible Power Cable
It's probably not good engineering practice to use "standard HV cable" for a marine application. I'm pretty sure your company would not be happy with the impending lawsuit when something goes wrong in the future.
RE: Installation/Engineering Costs for Submersible Power Cable
But then you have the old "standard" HV cable already laid out from end to end, with a good place on shore for tooling. You then use the old HV cable to pull the new water-rated cable back out the island. /sarcasm
( By the way 1, find out if the installation is near the ocean shore, or across salt water with tides, high winds and storms possible (???) or across a simple fresh water lake with static water (????) or across a river with widely varying currents and flows?
( By the way 2: To get an estimate, CALL PEOPLE in the industry.
"Hi (fill in name of cable company provider), you don't know me, but I'm setting up a bid for a high volt, 4000 foot submerged cable approximately 4 feet in depth from shore to an island. I'd like to talk with a sales representative about potential ways of doing this, and to get any recommendations your engineering and specifications staff can provide about this kind of cable. "