20180317 TerraHertz http://everist.org NobLog home Updated 20180322
Back in October 2017 I'd gone down to Lavington in Albury to inspect some CNC lathes coming up for auction. I ended up not getting one of those lathes, since they were unsuitable, plus the total cost of ownership was way too high for me.
While there I'd seen a decent-sized three-phase UPS (Uninterruptible Power Supply) in the server room. It was partly dismantled, since someone had removed most of the lead acid batteries in a haphazard and negligent manner. Scattering the cabinet door, battery shelves and cabling segments about the room. So the auction photo made it look like a ruin.
Image from Pickles auction listing.
The UPS system consists of the two tall cabinets side by side, the transfer switch on the wall, and whatever remnants of the battery wiring can be found lying around the room.
Other system parts are the two cabinet doors leaning on the wall to the right, and one of the several missing shelves leaning against the wall on the left. The open door on the left leads into the network server room. This UPS once maintained power to those servers. It's all shut down, from some master breaker in the central distribution switchroom.
On opening the UPS electronics cabinet, I found the internals appeared to be intact. Hmmm... I've been looking for a 3-phase 415V UPS, for use in conjunction with what I consider my primary retirement project. Quite important to me. This one would possibly do, though given its careless decommissioning who knows if it's operable, whether all the bits are really there, and so on. Anyway I made a note of the lot number. I wasn't enthusiastic enough to bother taking photos.
For the actual auction, Pickles' bidding system is a lot more involved than ebay. There are several steps required to make a bid, and you must have a bank account linked and with sufficient funds to cover the entire purchase price plus any extras. So before the CNC lathes came up, I wanted to make at least one bid on something. The UPS provided a good test case. Needing to hoard as much of my limited funds as possible for a lathe (either a CNC from this auction, or something more suitable elsewhere) I put a very low bid of $11 on the UPS. Like I said, there's no way to tell what condition it's in. Also my need is not urgent, and I'm pretty sure eventually I'd find a suitable one in Sydney. For cheap or free.
For whatever reason, no one else bid on the UPS. I'd say because others felt the same way I did about its poor visible condition, the trouble of transporting something not known to work, plus effort and expense needed to restore it. Also it was an item buried in a very long boring list of trivia, such as 194 individually listed "Tipping Swarf Bin Trollies" (big, rusty metal chip bins) then several more pages of miscellania from the offices.
Consequently I won it for $1. This made me quite happy.
Some background: I've been looking for a large 3-phase 415V UPS for around 8 years. It has to be extremely cheap or preferably free, due to my near zero income. (That's a long story; some other time.) Twice in those years I've just missed out on one. I'm mentioning this to make it clear this UPS purchase wasn't some momentary whim. It's part of a long term plan. One that seems to benefit from remarkable strokes of luck surprisingly often. If this UPS does end up in my hands, the $1 price will count as another. That I have to fight for it doesn't change that.
Before I show you the UPS listing details, lets have a look at a listing typical for things like the CNC lathes.
One of those, Lot 152, I was planning to bid on, and did. I bid $1,350, highest bid was $3,050 — which failed to meet reserve and was passed in. I'd spent some time in Albury before the inspection, inquiring about transport costs to Sydney, and of course was fully aware of the auction listing notes specifying the $2200 decommissioning and removal fee, appointment required to load the machine to transport, etc. Clearly meaning the buyer would not have access to the factory floor to retrieve their machine themselves. Which is understandable, given the great number of very heavy and large machines, needing heavy special purpose machinery to move them, logistics of removal sequencing, and so on.
Notice those caveats are repeated in the lists on every single item (hundreds) to which they apply. They were present on the online item listings too.
Now here's the listing for the UPS, Lot 9074:
I've shown the whole page for context. It's page 27 of 31 pages for this 'sale 12' stage of the auction. Points:
I'd considered the disconnection and removal requirements, or I wouldn't have bid at all. The electronics cabinet is mostly empty space. I knew it could not weigh more than a few hundred kilos. Easily able to be jacked up onto a small dolley, wheeled down the corridoor, then ramped/winched onto a trailer. The battery cabinet is effectively empty, and will be moveable with a simple trolley. Having just recently moved a vastly heavier lathe around, I knew I could safely move this UPS completely by myself.
As for the electrics there is a bundle of cables visible on the wall. Bearing in mind this UPS runs the network servers in the adjoining room, there will be one main supply cable (coming from a circuit breaker in the main distribution switch room), and several output cables going to power outlets in the next room. The bypass switch allows the UPS to be cut out of the loop, with power running direct from the supply cable, to the several outlets next door.
It's all powered down. The main supply breaker elsewhere is turned off. All that's required to actually disconnect this UPS, is to identify the master breaker (which Benson staff will certainly know the exact location of) and ensure it's tagged 'do not operate' and locked in the off position. The main supply cable can then be disconnected at the UPS and made safe (wire ends taped securely, and cable marked with the supply breaker number.) It's likely the factory building will be demolished, so this is all 'final acts' stuff anyway.
Next point to note is that the entire factory has been maintained for years by Benson Machines staff. Some were present during the auction inspection days, and I spoke with them. They know the place like the back of their hands. There's only one networking server room, and one UPS for that. They will know exactly where the master breaker for this UPS is. They would absolutely have already tagged it 'do not operate' and locked it out before they removed the lead acid batteries from the UPS. This would be totally essential for their own safety, since the battery chain runs to several hundred volts DC, and is charged via UPS cabinet electronics from the mains supply. The battery chain is very lethal, which is why it's been removed.
So really, there is absolutely nothing Benson Machines needs to actually do, before allowing me to remove my property. All I require, is a personal eyes-on of the master breaker, to ensure it's locked out and some joker can't turn it on while I'm disconnecting the supply cable at the bypass switch on the wall next to the UPS. In fact I don't even really need that, since by safe work principles I'd still perform the disconnect as if the circuit was live. Isolated tools, disconnect and insulate one lead at a time, and so on.
Alternatively, if Benson Machines prefers, they could simply cut the single supply cable in the UPS room themselves. Anywhere visible, between the UPS ancillary switch cabinets, and where the cable enters the room from the cabling ducts. This would literally take them a few moments. In the main distribution room, verify the UPS supply breaker is off and locked out. Walk to the UPS room, double check the supply cable has no power, cut the cable. If they wish, tape the end. Done. The entire UPS system is no longer a 'wired installation', and can be removed by anyone.
In this manner they fully conform to their own auction sale terms, ie no restrictions on the UPS removal, and have satisfied their safety responsibilities.
The following is tedious for anyone but me (the auction winner.) I'm only detailing it because as you'll see, whether the UPS is legally mine later becomes an issue.
Click on thumbnails for larger size docs. Times are when I saved the original file.
I've removed my address and contact details from all of the following, because I'll be putting this online.
Contact details of representatives of Pickles and Benson Machines are left in, as they are commercial-public.
Excellent. As of Oct 11th 2017 I own a 30KVA UPS. (30KVA is the total stored power, if it had batteries and they were fully charged.)
At that point I didn't know if I'd win a CNC lathe or not (but expected probably not.) Some logistics problems — how would the UPS fit in with getting a CNC up to Sydney? Alternatively if no CNC lathe, I'd be going down to Albury myself, with car and trailer to pick up just the UPS. But the problem with that is my car is currently out of rego, while I'm working on the suspension. I expected to be able to re-register it soon, once the suspension issues were fixed. I also have a trailer that I very rarely use, so had let rego on that lapse as well. So I thought it might be a few more weeks before I could get down to Albury.
During my visit to the factory for inspection, I'd spoken with people who'd be involved in shipping the sold machinery. They'd said it was expected to take them well into the next year (2018) to get all of it done.
The auction details for the smaller items such as office furnishings (including the UPS) had specified pickup must occur from Oct 17th to 25th. I wasn't going to make that.
The listing didn't state anything about needing to make an appointment to pick up the UPS, and therefore I should really be able to just turn up and fetch it out. But I thought seeing as I was going to be late, I'd be polite and check with them that being late would be OK, and let them know the UPS definitely would be picked up. As opposed to the bid being from some joker who would just abandon it.
Since it's sitting out of the way, in a room all by itself, effectively in a basement (though it's actually ground level there) and I wouldn't need any assistance from Benson Machines, I expected there wouldn't be a problem with any delay. This was correct; Benson raised no objections to leaving the UPS in place until pickup could be arranged, sometime during their heavy equipment shipping phase.
Called 9738 3010, asked for Luke McCann.
Told he's not available. Asked questions of lady who answered. Told:
At 5pm he phoned back. My note made at the time:
I also recall he'd commented in passing that he/Benson were sad they had neglected to put a reserve price on the UPS. "Big rush, etc." I let that pass without comment and also didn't discuss or think anything of his mention of having to disconnect the UPS. Assuming that wasn't my problem, and anyway how hard was it to isolate and cut the cable? I felt the issue was trivial, and so didn't even make a note of it.
In response I SMS'd him:
He SMS'd back:
The rest are email.
Hello Paul,
Please accept my apologies for not yet being able to come down to Albury to pick up the large UPS, lot #9074.
I did drive down to the Monday inspection, but for the UPS pickup I've had a number of obstacles, including
a car mechanical problem, illness (bad cold and bacterial infection that required antibiotics), and other
urgent time demands.
I'd spoken with Paul about whether it was OK to leave the UPS for a while longer than the published deadline of the 27th. It is large, and out of the way in the basement, so considering the months it will take to work through the many large machines on the factory floor, I hope some delay won't be a problem.
Both the illness and 'urgent chore' are done with now, so getting my Subaru and trailer capable of the
trip is now top of the list. Incidentally the story of the urgent chore is written up online here:
http://everist.org/NobLog/20171004_buying_lathe.htm
You may find that story amusing and relevant, though it's long. To save your time, just scroll down till you see a photo of the Okuma Spaceturn LB250T, one of the machines I came down to inspect before the auction. Summary: right after being outbid on a Spaceturn machine, I did find a large old lathe that could do the simple machining task I need. But the logistics of moving it basically took all last week and most of this week.
Regarding the UPS. Paul mentioned he felt Benson would have to disconnect it. Ie take some of their time. This is not necessary. I'm a retired electronics design engineer, and though I do not have an electrician's licence I have plenty of working experience with power systems, including a year spent as electrician on two Navy ship refurbishment projects (Tobruk and Manoora) done by Forgacs, at Garden Island. I worked under a licenced electrician supervisor (John Martin) who made a point of commenting at the end of the contract that he'd never seen anyone who worked as capably as I.
Anyway, for removing the UPS all I'll need is to be shown the supply lockout provisions. I will handle all disconnection of the UPS itself, and making safe of building wiring left after the UPS is removed. You're welcome to inspect after I'm done, to verify safety.
I also can move the cabinets myself, so long as I can get vehicle access to an outside door on the same level
as the basement. I have the PDF manual for the UPS, and gear to lift it onto a dolly, wheel it outside, etc.
If there is a printed manual for the UPS in the manuals store, I'd appreciate receiving that.
Questions I have:
Incidentally I also won one other very small item. Sale 7, Lot 5354, Test tube agitator. If someone could take that downstairs and put it with the UPS, I'd appreciate it.
About the Okuma Spaceturn. Much as I'd _love_ to have one (see my writeup), it's probably not feasible even if
there are any left by now. The main problem is funds. Also workshop space, now I have an old lathe sitting in the
space where a Spaceturn could have gone. But, if there are some still unsold, please let me know. I'll consider
what I could do to get one and fit it in somewhere.
I don't suppose Benson's $2200 removal fee is negotiable?
It was very surprising that some (or all?) of those passed in. Setting reserve prices on such a huge auction seems
unwise, since it was sure to overwhelm the market. Plus, very old & worn CNC machines, and all the other issues I
discovered and wrote about.
Who set the reserves? Pickles, Benson, or ASI's receivers?
By the way I also bid on Sale 6 Lot 605, 'Assembly machine in cubicle.' Which also passed in.
I was interested in getting something else with entertainment value, since I have to come to Albury for the UPS anyway.
The idea was to disassemble on site, fitting the parts in trailer and car, leaving only the heavy welded steel frame
to be scrapped.
Did that sell yet?
Best regards,
Guy Dunphy
Hello Guy,
Apologies for the delay in getting back to you. As you can imagine, we are extremely busy.
Regarding your question about removal of the UPS Lot 9074; We are unable to grant you access for disconnection unless you are a currently licensed Electrician with suitable qualifications and have a current Workers Compensation Insurance.
Assuming that you are not able to meet the above requirements, we have checked and advise;
To trace, disconnect, tag and load 9074 onto your transport, the cost would be $965.25 which includes GST.
We would need payment prior to commencing the work.
Please advise if you wish to proceed.
Best regards,
Paul Philips
Benson Machines
118 Carnarvon Street
Silverwater, NSW 2128
Tel 02 9737 9727
Fax 02 9737 9707
Mob 0414 26 27 28
Skype: paulatbenson
Freephone 1 800 68 78 98
http://www.bensonmachines.com
ABN 17 088 259 910
Good grief. In retrospect it's clear that now he knows I'm not going to buy an Okuma spaceturn CNC lathe, and he's decided on what he thinks is a 'fair price' for the UPS (around $950, the actual cost to Benson to disconnect it is near zero) he's going to say whatever he likes, to extract that payment from me.
At that point I wasn't aware of how casually he'd lie and make up stuff to support his extortion. So I still tried to be reasonable and polite.
Hello Paul,
At 12:25 PM 2/11/2017 +1100, you wrote:
>Hello Guy,
>Apologies for the delay in getting back to you. As you can imagine, we are extremely busy.
I appreciate your reply, and don't want to take your time for what should be a simple matter.
>Regarding your question about removal of the UPS Lot 9074; We are unable to grant you access for disconnection unless you are a currently licensed Electrician with suitable qualifications and have a current Workers Compensation Insurance.
>Assuming that you are not able to meet the above requirements, we have checked and advise;
>To trace, disconnect, tag and load 9074 onto your transport, the cost would be $965.25 which includes GST.
>We would need payment prior to commencing the work.
>Please advise if you wish to proceed.
Needless to say, I don't find that very amusing. It was fortunate that I wasn't able to
arrive there earlier, only to discover that little problem after driving 600Km.
Also having stood next to the UPS on inspection day and knowing perfectly well what's involved
in removing it, I find your cost estimate unreasonable and not a path I wish to take.
Could you confirm, someone WITH a current electrician's licence and workers comp. insurance, would have access to the UPS to remove it from the building, without Benson's assistance and thus at no cost?
I'll remind you that the auction listing made no note of any charges beyond the Pickles
percentage. There was no 'removal fee' or mention of requiremment for removal by Benson
Machines, where these _were_ specifically listed for the large machine tool lots.
No mention of qualifications or insurance requirements for that matter.
It may be that you wish in hindsight you had placed such provisions, but the fact remains
there were no such conditions of sale.
Please don't think that because I won it for $1 with no other bids, that I take this lightly.
I have a strong need for a large UPS, and wish to work out a way to obtain this one, that
I legally won and have paid for, with minimum dispute.
I'll be looking into my rights here, as well as seeing about obtaining assistance to meet your requirements, if that does actually turn out to be unavoidable.
Best regards,
Guy Dunphy
Hello Guy,
I believe that you may have misunderstood our motive; to provide a safe workplace and to comply with government legislation. If we do not comply, not only are we breaking the law, but our insurances become null and void. We are not permitted to have un-insured people on-site. (We had special dispensation on the two open-days).
If you have your own person who can meet these requirements, we will permit him/her access for disconnection.
You will also need two people for about 30 minutes to convey the items up to a loading point. These people will also need to show evidence that they have a current Workers Comp in place.
We are not trying to be difficult, just compliant in this litigious era. Regarding the notification of the above requirements; I can only apologise that this was not done (to the best of my knowledge) in advance of the sale. It was an oversight, with so much equipment to list.
If you pursue your “rights” and force us to provide these services at our cost, we will be paying you to take this equipment away. I’m sure that you would agree that would not be equitable.
Please let me know how we should proceed.
Best regards,
Paul
Hello Paul,
Re the UPS Lot 9074, in point form for brevity:
QUESTION re timeframe:
I'd like to have an assurance from you (or Benson, or whoever is ultimately in charge of equipment pickup) that
pickup can be arranged sometime in the major equipment removal interval (coming several months), and that there
won't be any 'storage fees' or other such unexpected issues.
I'm happy to fit into Benson's work queue, though bearing in mind there will be very little attention needed
from Benson once I have the details on my side worked out.
ACCESS
I'm certain there is no need to raise the UPS up to the factory floor level. Recall that I was there.
The 'basement' is actually at outside ground level at that southern end of the building, and there are doors to outside.
The equipment is two standard size, independent 19" rack modules, so fits through a normal door. There is vehicle access to that outside area, and no need for a crane hoist.
However, having two people (myself and an electrician I employ for an hour) would make the moving easier than by myself.
QUESTION re access:
Can I have vehicle access to the relevant ground level outside door of the 'basement' in that area?
It can be reached via the main truck bay eastern door, or gates in the fence off the main drive entrance.
See attached aerial photo showing vehicle access. URL for Bing maps view: https://binged.it/2z8df8U
So, does that cover everything, to your satisfaction?
Are you happy to let this sit at "I will notify you when I am ready, and would then like a date for pickup that suits Benson"? I am happy to leave it till some interval when you/Benson are not so busy. Or can I just inform you of a date, given that Benson won't need to do anything besides allow vehicle access and unlock a door?
I expect I'll need a date in advance, to arrange my personal insurance cover for site access. I'm certainly not going to pay for a whole year or whatever. (Of something for which I have zero actual need.)
UNRELATED MATTERS
I'm still somewhat interested in Lot 605 (Assembly machine in cubicle. Sale 6, page 4) which I bid on but was passed in.
Since I'll be onsite with an electrician and insurance cover, let me know if it didn't sell and you're interested in
discussing a realistic price.
What happened with the five network services racks, that were in the room next to the UPS? (Lot 9073, Sale 12, page 27)
Did they sell, and did the buyer encounter this same kind of difficulty in retrieving them? Sole difference being they
are only plugged into mains outlets, rather than directly wired. Run from the UPS incidentally.
They are about the same size, though probably heavier.
I was interested in those too, but didn't bid due to the transport cost for 5 racks, which made them uneconomical for me.
I could do with a couple more racks, but don't have space for 5. Didn't examine the contained equipment when I was there.
Final question: Did all the Okuma Spaceturn LB250T CNC lathes sell yet? Lots 149 through 153. Not just idle curiosity, though at present financing a purchase would be a difficulty. I have solved my immediate machining need, but am still interested in obtaining a CNC machine at low cost.
Regards,
Guy Dunphy
I received no reply to the above, nor anything further till the time of writing this history (March 2018.)
Given that I'd requested he state if he had any objections to the UPS being left in place until I could pick it up, his non-reply is legally an acceptance of my proposal.
Which is reasonable; it's a large item, out of their way, they are busy now, and it's best left till they are not so busy.
Also realistically, it's clear that the last thing he wants is for me to pick up the UPS. Certainly not until I pay the extortionate extra amount anyway. Presumably he wishes I would give up, and release the UPS to him so he can resell it.
It's notable that at no point did Paul Philips answer any of my questions, or provide any helpful information at all. Very clearly his sole objective was to obstruct my picking up the item I'd won, by placing impossible conditions on its pickup.
I recall I had also had one more phone conversation with him, at some point in that correspondence series. He'd reitterated all his demands listed in his emails. He'd also talked about how 'at least two or three people and lifting equipment would be required, for getting the UPS up the stairs to the factory floor level for loading.' (Words to that effect.) I don't think at that point he was aware I'd actually seen the UPS's location. Whether he has ever been to the Albury factory himself I don't know. So maybe he's just misinformed about the location and access. Or, if he has seen it, then he was lying in the expectation I would not know any better. It doesn't need to go up any stairs. Unfortunately I did not makes notes or record that conversation.
In my email I'd suggested I was looking into complying with his unreasonable and impractical demands.
However I now reject them absolutely, as deliberate obstructive lies, intended to serve as extortion or impossible obstacles.
Here is my position:
There's also a 'cable cover' on the floor behind the UPS racks, protecting cables from being walked on. I don't care about that. Can take it or leave it.
In my last contact with Mr Philips on 3rd Nov 2017, I'd informed him I would notify them when I was ready to come pick up the UPS once my car was repaired. And that this may be an extended delay. He made no complaint, leaving it at that.
The work on my car did not go well. After fixing the suspension problems myself, on having a rego check done it transpired that the engine also needed work. I'd known about it, but planned to recondition a spare identical class engine I have, and swap that in after the car was registered. Now that's not possible, this engine has to be fixed immediately.
I was quoted $2000 just to replace the clutch. Good grief. Not acceptable.
Asking around of friends, one suggested a mechanic he has had work done by in the past. I contacted that mechanic. He visited, seemed impressive in his knowledge and past experience with Subaru. He'd previously worked as a Subaru licenced servicer. He has an IR video camera, that showed up a curious localized overheating problem of the RH side of the engine. I'd known it was overheating, but not realised it was so localised. He suggested that if replacing the clutch, it would be best to do a complete engine recondition at the same time.
I agreed, it would. Except I'd been hoping to do that myself (cheaply), on the other engine. But am in this urgent re-registration bind, oh well. He quoted $3000 to do the clutch plus a complete recondition. Including new rings, all crankshaft bearings, but no bore regrinds.
I thought that was a lot more reasonable than $2000 just for the clutch. Agreed to it, and paid $1800 deposit. (Actually not my money.)
The car got taken away on an all-up truck on 20171122. I expected to see it back in 2 or 3 weeks.
Ha ha. It became one of the worst f*ckups I've ever seen. Many unbelievable dramas. I'm not going into them here; there will be a separate writeup with all the details. Part of it was the mechanic collapsing around Christmas from high blood pressure and being in hospital for a while. He says. Later on, it became clear nothing he says can be trusted, so whether he was actually ill or not, I don't know. The upshot was, he got an extra $700 on top of the $3000, and the car didn't come back till 20180227 — 27th Feb 2018. Around three months since he began. Annnnd... there are reasons to suspect it hasn't actually had new rings or crankshaft bearings. Many defects in his work, and multiple solidly proven lies from him.
Grrr... I'm still looking into legal options about this.
Some more time passed, dealing with the problems, doing registration, wheel alignment, etc. By 20180302 that was done. The trailer was also an unexpected pain, since it turns out it was manufactured a long time ago and didn't have a compliance number stamp. By 20180315 this was all sorted out too. Finally, I can go to Albury to pick up the UPS any time.
No such luck. I get the impression Chris is in fact a pleasant practical guy, and embarrassed to have to support such rubbish, but... Paul Philips is his boss. Says I'd have to speak with Paul.
Chris tried to tell me (in the manner of someone repeating what they've been told to say) that "It's hard to trace the cables back through the factory to the main distribution."
Good grief. This is the UPS for the main offices net server room. The server room visible through the open door seen in the Pickles auction photo. Other side of a wall. All the cables but the one supply cable will go through the wall to that room. One supply cable will come from the distribution center, and Benson staff will know perfectly well where that goes, from which breaker. Also it's already off, and Benson had to have locked it out of service already, to safely remove the UPS batteries.
One small good detail — he says the UPS is still there, and they'll take about another month to complete shipping of the factory machines.
You know, I gather this company Benson Machines has been involved with maintaining the Lavington factory for a long time.
This makes me think that I know why the place was not economically viable. Apparently the car manufacturing plants shut down, so the gearbox factory lost its market. But if their gearboxes were overpriced, that would have contributed to the collapse. And if Benson, with rapacious attitudes like Paul Philips' had much to do with the operation, I would expect the place to be absolutely hopelesss.
Remember I noticed that the huge factory, with seeminly endless rows and isles of machines, had no grid references marked on the roadways? And the floor surfaces were glass-smooth slippery hard paint? That is exactly the kind of nonsense I'd expect to find in a place with management like Mr Philips.
So many Australian manufacturing jobs lost.
Such unproductive pig-headed greedy attitudes couldn't have had anything to do with that, right?
There's at least one door to outside, on the wall indicated by the green oval.
He did not reply. Perhaps because he could not see any way to maintain his demands, now I've made it clear why his claims of difficulty and need for multiple people, all with workers compo insurance just to move it, are rubbish.
But there's an even better access route. Here's a section of the building layout plan handed out to everyone at the auction inspection. My annotations in green.
Note the plan actually says "UPS room" and "Server room" correctly where they are. Though it does not show the internal partitions in that long space.
The doorway at the end of that corridor is here:
Right off the main entrance drive from Kaitlers Rd. It could not be easier.
Ah the suspense. Can Mr Philips be persuaded to honor the auction sale (lack of) conditions, or not?
Stay tuned...
Though it was still a bit of an adventure. See subsequent articles.
This document online: http://everist.org/NobLog/20180317_ups_drama.htm
Discussion: http://www.eevblog.com/forum/chat/having-some-trouble-retrieving-my-property-request-for-comments/