Evidence of safety and redundant systems in UFP designs

[Lucky]

O'BRIEN: That's why each pad has four redundant scanners. If any one scanner fails, the other three take over.

Each transporter pad has 3 back up transporters in case one fails during transport.

DATA: Sensors indicate that the large circle is a portal or airlock, possibly leading to the interior of the sphere. 

RIKER: This looks like the front door. Should we ring the bell? 

PICARD: Mister Worf, open a channel to that communications array. 

WORF: Aye, sir. 

(there's a jolt, and Red alert goes off) 

DATA: Some type of tractor beam has locked onto us. 

RIKER: Helm, get us out of here! 

RAGER: We've lost main power. Auxiliary power down to twenty percent. 
(the viewscreen shows four beams pulling the Enterprise towards the opening spacedoors) 

WORF: We're being pulled inside. 

RAGER: Auxiliary power failing. 

DATA: The resonance frequency of the tractor beams is incompatible with our power systems. Warp and impulse engine relays have been overloaded. I am attempting to compensate. 

(Enterprise is slung into inner space) 

RAGER: The tractor beams have released us, sir. 

RIKER: Hold position here until we can get our bearings. 

PICARD: Full sensor sweep, Mister Data. Where are we? 

DATA: Approximately ninety million kilometres from the star's photosphere. I am reading a great deal of surface instability. It may be 

RAGER: Sir! The inertial motion from the tractor beams is still carrying us forward. Impulse engines are offline and I can't stop our momentum. We're falling directly into the star.

The Enterprise-D has auxiliary auxiliary power source. That means the E-D has a total of 4 sources of power: The Warp core, the Impulse engines, auxiliary power, and auxiliary auxiliary power.

Does anyone else know of any safety or redundant systems talked about? I'm rather tired of hearing people claim a lack of safety and redundancy in UFP design.

[Praeothmin]

I'm not too sure about an "auxiliary auxiliary power" source...

Data did say he was attempting to compensate the effects the tractor beams had on the E-D's power systems...

But I do agree that Fed ships do have redundant systems, we've seen or heard about them so many times to simply ignore them...

[Cocytus]

Well, there aren't any seatbelts on the bridge......

Seriously though, I don't know where people get the idea. There are quite a few episodes that speak of redundant power generation systems and overlap between various power sources.

From "Hero Worship"

GEORDI
(to com)
I've transferred fusion reactors
four through nine into the shield
array.

The Enterprise-D has at least nine fusion reactors which can supplement the shields.

WORF
(off instruments)
Wave front intensity is
continuing to increase.
Structural overpressure is
exceeding one hundred eighty
percent.

Starfleet, being good engineers, design a safety factor into their ships.

GEORDI'S COM VOICE
Warp transfer to the shields
complete. That's as strong as
they're gonna get.

Warp power can augment the shields.

From "The Nth Degree"

LARSON
(puzzled)
Commander, warp power has been
transferred to the shield grid.

Warp power augments the shields, again.

In "Day of Honor," Voyager dumps the warp core, and then prepares to do battle with a fleet of Cataati ships. IIRC, the weapons were "fully charged," according to Tuvok, though shield strength was "extremely low."

In Nemesis, the E-E's warp core goes offline and she still battles the Scimitar, apparently with full shields and weapons.

In Insurrection, the E-E dumps her core to seal the subspace tear, and still has shields and weapons (she withstands fire from Ru-Afo's ship then damages it with phasers.)

[Mike DiCenso]

From "The Masterpiece Society":

PICARD [OC]: Mister La Forge.
LAFORGE: Yes, sir. Good luck.

HANNAH: You, too.

LAFORGE: Engage tractor beam. Okay, let's give it a try. Shutting down non-critical systems.

HANNAH: Emitter circuits one hundred seventy percent over standard.

[Bridge]

DATA: Increasing impulse power to tractor emitters. EPS power levels rising.

[Engineering]

LAFORGE: Transferring warp power to tractor beam generator.

HANNAH: Graviton generators operating normally. Surge pulse now synchronised. Emitters radiating at three hundred twenty percent over standard.

LAFORGE: Bridge, we need more power.

[Bridge]

RIKER: Reduce life support to minimum requirements, Mister Data.
DATA: Aye, sir.

[Engineering]

HANNAH: Three hundred ninety percent over standard.

LAFORGE: Come on, come on.

HANNAH: No change in the fragment's course.

LAFORGE: We've got to increase the pulse frequency.

HANNAH: The emitter circuits won't hold for long.

LAFORGE: We won't need them for long.

HANNAH: Four hundred percent over standard.

LAFORGE: Okay. Now we're getting there.

HANNAH: The fragment's moved point four degrees off its previous heading. Point six five. It's working.

[Bridge]

DATA: We have lost one of the emitter circuits.

WORF: Life support failure. Decks nine, twelve, and thirteen.

RIKER: Engage evacuation procedures for those decks. Geordi, we're going to need power back soon.

LAFORGE [OC]: Acknowledged.

[Engineering]

HANNAH: Fragment's new heading adjustment is at one point zero one degrees. Is it enough?

LAFORGE: Not yet. Hold on.

DATA [OC]: We've lost

[Bridge]

DATA: The second lateral emitter circuit.

WORF: Losing life support systems on decks five through nine. Evacuation procedures initiated.

PICARD: Mister La Forge.

LAFORGE [OC]: Hold on, Captain.

DATA: Shipwide life support failure in fifteen seconds, sir.

[Engineering]

HANNAH: Almost there, Geordi. Course shift is at one point one six degrees.

[Bridge]

DATA: Termination of all life support in five seconds.

[Engineering]

HANNAH: One point one eight.

[Bridge]

PICARD: Now, Mister La Forge.

[Engineering]

LAFORGE: Yes, sir. Shutting down all tractor emissions. Transferring power back to life support.

HANNAH: One point two. We've got it.

The E-D has multiple circuit redundancy and can withstand the loss of two major circuits without endangering the operation. Power generation was at least 400 percent over standard limits, which means a huge amount of engineering safety tolerances was built into the power systems.
-Mike

[2046]

"Brothers"[TNG4]:

LAFORGE: No, not yet. Computer, isolate cause of life support failure.
COMPUTER: Atmosphere conditioning pumps on deck one are operating in negative mode.
LAFORGE: How could that be? There are seven independent safety interlocks to prevent that.