SCP Foundation

1. "Item #: SCP-xxxx"
Hardly a serious issue, I just thought in the draft-phase it could be much more enjoyable to
use "SCP-ZZZ" as a placeholder until a number can be decided upon.

2. "Object Class: Euclid Keter"
I see what you're going for with this classification, and with a bit more background to the SCP's discovery, you could really have a good plot-device here; perhaps describe how the SCP was difficult to discover, seemed docile for the first couple months of containment before becoming worthy of Keter-class designation, but currently I think Euclid-class is better fitting until this can be fleshed-out.

3. "Special Containment Procedures: All instances of SCP-xxxx are to be contained on site [REDACTED] with 24 personnel patrolling the premises at any given time ."
Minor problems with grammar & syntax, can be tweaked later on (I offer my services), 24 personnel seems unnecessarily precise, perhaps try "with no fewer than two dozen (24) Foundation security officers equipped with incendiary devices on standby at any given time."
Also, you might want to try using "█" symbols in place of "[REDACTED]", this certainly adds to the visual effect of the SCP report.

4. "A 20 by 9 meter barbed wire fence is to enclose the perimeter of site [REDACTED] and should only be accessed by Class C personnel and up."
This can be cleaned up by using symbols and numbers instead of text, remember, this is a report and needs to be easy to read and understand quickly (this does not mean it has to be simple or dumbed-down); try using "The perimeter of Site-██ should be surrounded by a barbed-wire fence, no shorter than 9 metres (9m) in height, in addition to standard site-security defensive measures." You could even enhance the mystery by redacting more information;
"…no shorter than █ metres (█m) in height,…"

5. "should only be accessed by Class C personnel and up."
Can be improved, try "D-Class personnel are prohibited from entering the vicinity of….", this could be added as a footnote to go with the rest of that section of text.

6. "Any personnel who are found sleeping on the job will be tested for infection and promptly fired."
Not really in the spirit of the SCP Foundation, try "Any personnel, D-Class or otherwise, found asleep on the premises will be subject to quarantine, followed by medical examination and termination if found to be exhibiting symptoms of SCP-ZZZ exposure."

7. -Description
The IKEA part seems unnecessary, perhaps redact mentions of IKEA, certainly clean up the mentions of specific numbers; 3 days, 14 hours, etc., try better explaining the effects of the SCP, what happens, why it might happen.

8. -Discovery
Not many problems with this, I'm sure that the story behind this could be tweaked somewhat, but the overall plot of it is sufficient for the moment.

1. break up large groups of text by sorting out ideas into their own paragraphs. This will not only help you convey the idea in a 'cleaner' way, but will also help your reader easily jump around to parts they want to go over again.
2. The Discovery section of your article seems to be a little overbearing, and could be improved by replacing it with several addendum's and notes. The more vague and mysterious these are the better. You want your reader to know enough to be informed but also be ignorant enough to feel suspense.
3. "Personnel who do not.. show symptoms of exposure to SCP-xxxx will be terminated immediately," - Why is this so? are these personnel D-Class only? Or are you referring to any personnel? This seems a little extreme considering that amnesics are a viable alternative, and that 'personnel' isn't some infinite pool the foundation draws from.

Please remember these are my personal opinions and in no way should you feel the need to change the article. These comments are for your own constructive writing purposes. I hope I've helped.