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Comment: Put it in a Pelican case for starters... (Score 1) 202

by Ellis D. Tripp (#48234339) Attached to: Ask Slashdot: How Do I Make a High-Spec PC Waterproof?

I put together a system a few years ago for use doing offshore surveying in the surf zone. The system is carried on the back of a jet-ski type PWC, and has to withstand constant salt water spray and splash, as well as occasional immersion. It consists of a PC, a monitor, an ultrasonic depth gauge, a GPS receiver, and a custom keyboard, all mounted on the jet-ski.

The case is an off the shelf Pelican waterproof travel case, with all connections in and out of the box through Seacon waterproof bulkhead connectors and plugs. Because this thing is in a sealed black plastic box used outdoors in full sunlight, cooling was an issue. It was solved by using a seawater cooling loop supplied by a tap off of the propulsion jet on the jet-ski pump. The monitor is a 9" TFT mounted in a smaller pelican case with a viewing window up on the handlebars, with the UI handled via a custom 12-key "keyboard" constructed from industrial watertight switches in an IP68 enclosure.

System is still in regular use, with the only repairs being damaged cables when the driver flipped the jet-ski in harsh surf and ripped things physically apart.

Comment: Re:Gives new meaning... (Score 2) 178

by Ellis D. Tripp (#47675167) Attached to: Hemp Fibers Make Better Supercapacitors Than Graphene

Actually, Washington's diaries talk about his hemp crop, and include this passage:

  "Began to separate the Male from the Female hemp ⦠rather too late."

The only reason to separate the male and female plants is to prevent pollination, and thereby increase (psychoactive) resin production. This is still done to this day among pot growers. It seems pretty clear that Washington had at least some interest in the medicinal/psychoactive qualities of his crop.

Comment: Multiple service entrances are not allowed (Score 3, Informative) 124

into the same structure per the National Electrical Code. Only exception is for different voltages, etc.

Every building has some electrical switchgear that constitutes a "single point of failure", and it is mandated to do so by code. Simplifies cutting off power by first responders in an emergency, etc.

Buss duct is generally not stocked by local distributors, and may have been custom made to order (angle/offsets/termination sections anyway) so depending on what exactly burned up, they could be a while sourcing replacement parts.

Comment: Meth cooks will love this technology.... (Score 1) 380

by Ellis D. Tripp (#47327867) Attached to: New Chemical Process Could Make Ammonia a Practical Car Fuel

Kinda puts the DEA behind the 8-ball when they have spent years and pissed away millions of tax dollars tightening regulations on anhydrous ammonia (used as a fertilizer), and now this comes along and promises to make the stuff available at every local gas station!

Comment: What? No mention of the SLAM or Project Pluto? (Score 3, Informative) 133

From the Stranger-than Strangelove dept:

Essentially a flying, unshielded nuclear reactor that flies around pissing out fission products, and crapping hydrogen warheads.

All to defend freedom and democracy,. of course...

Comment: The shuttle's failings were largely (Score 3, Insightful) 155

the fault of the USAF!

The USAF demanded the ability to launch, retrieve/deploy a payload, and return to earth in a single orbit. They also wanted the ability to get into a polar orbit, which required a huge cross-range capability not in the original design.

After forcing all this crap into the design (and sinking billions on a shuttle launch/landing facility at Vandenberg AFB), they gave up on the project entirely, leaving NASA stuck with a vehicle that was no longer optimized for what NASA wanted to do with it.

Comment: Re:remote doesn't equal secure (Score 3, Insightful) 213

by Ellis D. Tripp (#47074399) Attached to: Dump World's Nuclear Waste In Australia, Says Ex-PM Hawke

Also keep in mind, the size of the seismic activity needed to harm the facility in any way would have to be so large that any hazardous waste leak that resulted from it would be more of an afterthought compared to the destruction from the quake itself.

Destruction of what? The whole idea is to site a nuclear waste dump in the middle of nowhere. What would a local earthquake damage? Some mountains in the middle of a remote desert?

Possible leakage of stored waste would seem to be far more of a potential problem than toppling cactus and shifting rocks around.

"Well, social relevance is a schtick, like mysteries, social relevance, science fiction..." -- Art Spiegelman