11/11/2023 0 Comments Data generator kicks in during power![]() I doubt that many people working at that hospital could interpret engineering drawings, but they'd spot big pipes with "Oxygen" stickers on them. Industrial facilities have piping exposed so it can be inspected, serviced and so people know it's there. It turns out it was a valve and it would have been bad if it didn't work correctly. His intention was to verify if he was right in thinking that the symbol was a valve and not a window or something. He also notes his random question about what he thinks is the symbol for a valve on the plans and what would happen if it stuck. Richard Feynman talks about his being sent out to go over the plans of a Uranium processing plant to root out storage rooms being back to back and possibly leading to critical masses being formed. The ER oxygen main was running behind that fridge." "I guess it was even worse than the short-circuited refrigerator that caused a massive oxygen fueled fire a few years earlier. Hiring a crane and deleting a window might get the job done, but it would be cheaper to find another flat. If you want your piano in your 10th floor flat, your first step before making the purchase is to see if you can get it there. The logistics would have been a nightmare. HGVs also required permits and had to be parked a fair distance away after unloading. Parking the lorries down the road and rolling all of the gear took too long or cost way more in hiring extra labor (often times union). This was often the case in large cities and older concert halls. If a HGV wasn't going to fit, we'd hire two or more smaller trucks and load out into them from the previous gig. One thing we had to check before a tour was if we could get our trucks up to the venue. A few smaller tanks mounted on trailers such as the military often uses is the easy solution. Some MBA found that buying and taking delivery by the tanker load was more "cost effective". "The generator and tank were in the rear car park, which is quite small and tight to get a tanker into." ![]() Things changed fast and it might be a couple of years down the road when it was discovered that the baby went out with the bathwater or somebody proposes a new approach that had been tried already, but nobody is left around that remembers it was fruitless. This way, dead ends would be preserved and previous generations of hardware, circuit boards and software could be identified. Previously, nothing was thrown away, but moved into hierarchs of "Canon" and "Apocrypha" according to the last revision signed off. I asked if they looked at the ToO doc I wrote and I was told that the documentation system had been "streamlined" to get rid of deadwood and it was quite likely that all of my descriptions were tossed by my replacement who didn't like me with a passion for some reason never specified. Years after I left, I talked with another engineer that had also left and told me I had been cursed due to somebody that couldn't get their head around a multi-input redundant power supply I had designed and built. I felt that if everybody had to figure out things from first principle analysis, they wouldn't be there long enough to sort out what they needed to know to be productive. The company was growing and at the same time had lots of turn over due to lack of adult supervision. A lot of things we did were "one-off" and very unique. ![]() I got told off for writing them at an aerospace company, but as the head of the department, I felt they were needed for a better understanding of what the engineer was trying to accomplish and the problems they were trying to solve. The long lost "theory of operation" statements have need of a comeback. "however somewhere in the 20 years since the campus was built the message was lost" ![]() It took a long weekend where everything was turned off, then brought back on in a controlled order before things worked again. If systems were built that redundant pairs were in alternate racks then the failure of a single generator should be manageable - however somewhere in the 20 years since the campus was built the message was lost - many systems turned out to have redundant capacity fed by a single generator, and one such system was the AD farm.The grid power was quickly restored but systems had already failed by that point. When the campus was originally designed it was decided to "stripe" power from the generators - every other desk, every other rack in the DC etc. Except one day one of the generators didn't kick in. Once a month - as a test - grid power was turned off and the backup generators kicked in, then they were failed back. They had a pair of very large diesel generators in a different building - which provided backup power to the entire campus. Many years ago I worked for an organization that ran its own data centers. Re: This would never have happened at a certain broadcaster I used to work for. ![]()
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