Guide to Ordnance
Ordnance, often shortened to Ord or toxins, is the (usually) massive lab with all those gases and bomb parts you see in Research & Development. This is that dangerous place where all that shaking originates, but it's really not that bad! Indeed, being a good bomb technician will grant you the ire of the Crew and praise from other Science personnel as you use your masterfully-assembled TTV's to refine cores, earn R&D money, and get experiments done instead of filling the station with craters.
Your Tools
The things you'll be holding in your hands or using most of the time.
Tools
Rapid Pipe Dispenser
The Rapid Pipe Dispenser (RPD). It lays pipe, for free, infinitely. Use in-hand to choose what to put down.
Gas Analyzer
The Gas Analyzer. The basic version can scan the gases in the tile you're standing in by using it in-hand, and the ones adjacent to you by clicking on them.
Wrench
The Wrench. You should really be familiar with this, but in case you forgot: with it in-hand, click things to wrench them down if they aren't, or unwrench them if they are.
Holofan Projector
The Holofan Projector. With it in-hand, click on a tile to place a holofan, a passable barrier that gas can't pass through. Click on the holofan again to dispel it. It can support up to 6 holofans at once.
Machines
Modular Console
The Modular Console. Serves a variety of functions, but in the lab you'll be downloading data to it and uploading that data via NT frontier to get experiments done, make money, and get discounts.
Tachyon Doppler Array
The Tachyon Doppler Array. Despite the Sci-Fi name, it's not that complicated. It'll record any explosions that happen in the direction it's pointing. When clicked, it'll bring up a menu with a log of all recorded explosions and their specific details, such as their range and possible causes (should the explosion in question result from a tank explosion.)
Tank Compressor
The Tank Compressor. Unlike normal pumps, they don't have a pressure limit and you can pump as much gas as you'd like into a tank. Explosions from this machine won't do anything, but they will shake the surrounding area as though an explosion actually happened.
Anomaly Refinery
The Anomaly Refinery. This machine is very simple. You put a TTV bomb and a raw anomaly core in, hit the red button, and you get a refined core out. Explosions from this machine won't do anything, but they will shake the surrounding area as though an explosion actually happened. It also runs simulations of inserted bombs!
Portable Scrubber
The Portable Scrubber. Will scrub out selected gases from an inserted tank, or the turf it's on if there is no tank. There is a 
Huge Scrubber variant on some maps that does the same thing, but faster and over a wider area. Scrubbed gases are stored in an internal buffer.
Pipe Scrubber
The Pipe Scrubber. Will scrub out selected gases from connected pipenets so long as it's wrenched to an 
Adapter and turned on. Scrubbed gases are stored in an internal buffer.
Portable Pump
The Portable Pump. Sometimes named "Lil' Pump," this blue thing can do the same things a 
Unary Vent can and more, since you can insert a tank into it. Siphoned/pumped-in gases are stored in an internal buffer.