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we're gonna do a case study on recommissioning and industrial gas chiller and I have to say that when I read the solicitation for commissioning a chiller on the North Slope of Alaska I thought wow cool I didn't know they had any chillers up there of course I was thinking of an HVAC chiller making chilled water this is a different kind of machinery this is a chiller that is more like an air dryer it chills the natural gas coming out of the gas field to sub to 40 below zero so that it the impurities can condense and be separated from the pure gas Mellisa Bynum is the the owner and I'm the commissioning consultant this case study examines the the restarting and recommissioning of this equipment it validates validates the building commissioning process because this is not a building this is a single piece of equipment industrial equipment in in the gas field the commissioning led to a new OPR operational hazard analysis design and review installation verification testing as well as the planning document and a documentation and training that all goes along with a successful project so these are all the things that you're probably familiar with from buildings but we did it on a single piece of equipment learning objectives I'd like to learn you learn the difference between startup and commissioning number two I would hopefully you will learn that using all the steps in the commissioning process is important and not cutting corners or leaving something out I want you to hopefully get from this that you can apply the building commissioning processes to an on building application that's that's the whole purpose of this presentation and understand that if you don't get it in the project specifications it's not going to happen and that was the case of the the first iteration of the commissioning when the project was brand new so great my light up here oops is ruining my slide so what I was what that was supposed to be was here's a mountain range I took this picture when I was flying from Anchorage to Fairbanks at about 20,000 feet and I noticed that down here is a mountain range and I thought wow somebody's standing down there would look up at that mountain range about the size of a big ski mountain in Vermont or something like that and they go man that's a really cool mountain and if they stopped their inquiry there they would miss the real story this is Denali the tallest mountain in North America this is four acre the second tallest one in North America and because there's a cloud bank right here they wouldn't be able to see past what was right in the most obvious superficial part was this little Foothill they would have missed the whole story so in today's presentation we're going to talk about who we are we're the owner and the consultant we're going to talk about you know what is this thing why is the fact that it happened in Alaska meaningful what why not what's the big deal about being in Alaska and what is this natural gas chiller we're going to hear the owners perspective on why the project needed to be recommissioned we're going to compare the original commissioning to the recommissioning that we did so it's a it's a like a compare and contrast the we had some system challenges when we got into this we didn't really know what to expect like I think like a lot of recommissioning or existing building commissioning if you want to think of it that way you're going to stumble across some stuff that you don't understand you're gonna maybe find some new requirements that weren't addressed in the beginning and you're gonna have to deal with them so that happened to us too and then of course at the end we're going to talk about what's next so Bernie my name is Melissa Bynum I'm a program manager for North Slope Borough in Barrow Alaska and I've lived in Barrow for about 23 years I'm originally from California so through a bid solicitation process we went ahead and hired Kauffman engineering to come in and take a look at what our chiller was doing and why it wasn't working like we wanted it to and I'm Walter Hines I was the commissioning consultant obviously that picture was not taken in Barrow as the consultant you know I developed the approach I facilitated the OPR I developed the commissioning plan and I was there for all of the field activities also on the commissioning team we had mechanical and electrical engineers that served as technical consultants so we could get all that right we had the manufacturers engineer to give us product support and he was quite technically astute also we had the gas field operators now the way this works is the the North Slope Borough owns the land where the gas field is and they hire a contractor to run the gas field so these are the users these are the the the folks that our deal with the gas every day I have to get at to market safely and in its pure form we had subcontractors or a refrigeration contractor came in and did some repairs and some upgrades to the equipment itself and a PLC integrator for those who don't know PLC is a programmable programmable logic controller it's a little computer chip that is programmable allows that it actually runs the equipment automatically you could call that the DDC component the PLC integrator actually swapped out the old PLC for a brand new one and the Alaska factor okay I guess it's my turn so like I said my name is Melissa and I'm the program manager for this project I was handed this project and about it's the down arrow the down arrow okay thank you okay so this project the chiller hadn't been working for about five years so it was my job to hire somebody to come in and take a look at it and see what was going on so the Alaska factor this picture is a picture of Barrow as an it's a pitcher a barrow in the summertime we're surrounded by water so the down arrow here we go all right so the Alaska factor Barrow is now known as OOP topic don't ask me to spell it unless I look at it we have recently changed our name to the native name and we're also the most northern city in the United States so I always win the prize of wherever I go who've traveled the farthest it's me usually always so we're located at 320 miles above the Arctic Circle little known fact nothing grows above the Arctic Circle so if you've ever been to the state of Alaska you've seen big mountains you've seen big trees you've seen it's nice and green and beautiful not here so it's all flat we have all tundra and nothing grows we have no trees nothing like that so it's all flat and vast wilderness for miles and miles and miles so our population is quite big for the slope we have just under five thousand people that live in barrel here's a little a little comparison the North Slope is compared to the Gulf Coast and I'll show you exactly why in just a minute so this is the this is the North Slope and the North Slope Borough contain it manages all of these villages so bear with me I'm not left-handed so I'm trying to hold the mic in point so all of our village we got Point Hope Point lay Wainwright except nuoc sit bear oh there it is Anna Tuvok pass Kaktovik those are all of our villages that the North Slope Borough manages Prudhoe Bay we don't consider one of our villages even though we do have offices there we have landfill we maintain the water and sewer and stuff there it's not considered one of our one of our villages if anybody's ever seen Ice Road Truckers yeah so there is only one road that goes to the North Slope and that is it from Fairbanks along the haul road up to Prudhoe Bay other than that ConocoPhillips in the wintertime we'll build an ice road to the village of Nuiqsut to maintain their pipeline other than that there are no roads to any of these points so logistically trying to get materials Freight equipment into our villages and particularly Barrow is quite challenging how do you get something to these points if you just can't you know truck it up it's really hard it's very challenging in the wintertime we have a oh in the wintertime and in the summertime we have Freight flown up all the time in the summer we have to barge it up so you have to be pretty organized you can't just go buy a piece of equipment and say hey we know we need to we need to take it up to Barrow today no it doesn't work that way you're gonna put it on the barge you need to plan ahead you need to get it to the dock by mid-may then you got to get it on the barge and then the barge goes through the inlet passage goes up through Point Hope Wainwright Barrow we see it about late August goes over to Kaktovik and then we can back haul everything else not easy it's even more difficult for the smaller communities these smaller communities are only accessible by small planes so we're talking caravans we're talking 1900 beach crafts very small planes so Freight will fly up to Barrow and then from there we can fly it out to the smaller villages I love apples I have to pay $4.99 a pound for apples because we're so far bananas $9.99 you have children oh lord help you if you have milk you need to buy milk $10 a gallon diapers oh goodness we're talking like a 15 pack easily $30 eggs $7 chips $10 been a Jerry's pint of ice cream $10 there are times when the weather is so bad that Freight cannot come in and so we have we have been bare no eggs no milk produce empty aisles yeah it's challenging sometimes it's not fun but we are there to help the community and to you know get things rolling so the next we were talking about that 640 miles compared to the Gulf Coast there you can see it's pretty wide so the North Slope Borough controls all of the villages and - - including a nativity s so the North Slope Borough rerun emergency services we've got the police department we've got the fire department we have Public Works we have health department senior services we also run landfills Airport so we can we can control we control all of that we maintain all of that for the North Slope and the North Slope Borough is is about 94 thousand square miles across so in our climate our climate can range anywhere in the winter from 40 to 30 below and in the winter and the summer time it can range anywhere from 40 to 70 above we have eight villages that are included in the North Slope Borough with the village the smallest population of two hundred so you can see right now just trying to get anything fixed here is pretty challenging we're also known as the land of the Midnight Sun so in the summertime we have 24 hours of sunlight which means in the wintertime we have 24 hours of darkness Sun last sets on November 18th and then doesn't come up for 65 days which makes a very very long winter so when the Sun does start to come back up it starts coming back up at about 10 or 15 20 minutes a day we start gaining sunlight about this time right now the end of April early part of May we have about 18 19 hours of sunlight by the end of May we'll have 24 hours of sunlight by the end of August the Sun will start going down again and we will lose 10 to 20 minutes a day we have wildlife we have polar bears they are cute they are cuddly and they will eat you so this is a picture of our football field graciously donated by Kathy parks in from Florida so we do have football team and this polar bear was a photographed wandering around the football stadium not much of a stadium but the football field and this was during the summer months in the late fall we also have caribou and we have all kinds of birds wait barrow for some reason has birds from all over the world that come up there so in the summer time it's a huge birding population that comes in so misconception we don't all live in igloos we actually live in real houses this is actually my house it's a very tiny house someday I will have a regular big house but not all houses are this small so we do not build our houses on traditional concrete we build them on pilings and that's to help preserve the the permafrost natural gas is essential to us we pump that gas out of our gas field we process it at our local utility company and in turn we have heat for homes electricity and were able to manage our water and sewer plants so why did we need to Commission this chiller well we had a chiller that hadn't been working for five years nobody could figure out what was wrong with it like I said I had it handed to me and I had to figure out what was going on so it didn't work we need this chiller to dry out our gas to process it so that our residents can live and so move on the chiller skid was constructed and installed in 2009 it ran for about a year and then it stopped we run it seasonally we only we only need it to actually run during the summer months that's when we need to cool down the gas and the wintertime it's it's so cold we don't really need to do that so we ran it seasonally and it ran for one season and then it started to fail and unfortunately the previous operators that ran the gas field before the ones we have now we're not quite sure how you know what was going on and what to do about it so they ended up bypassing this this chiller skid into our primary gas handling facility our community is growing we have more demand for fuel so we really need for this chiller to work because it has not been working we've had a lot of maintenance issues so this is essential for us to get this working so through a bid and solicitation process we were able to get Kaufman engineered on board they went through and they did their analysis they found that we had one missing or not one but we had missing lubricant components these key components were crucial for the chillers skid to run and you can see this this picture is a section of our pipeline this is in town so not only did we need the chillers get to run properly we also needed to collect that data and transmit it back to our operator center so our operators can take a look at it so by doing this we installed a PA PLC an HMI and then route then eventually we did program our SCADA system into this so now not only does their chiller work and now we also have the opportunity to work it in the winter and in the summer we also can collect the data we need and right now I'm gonna go ahead and turn this back over to Walter because he's gonna go into the technical details of the cellar skid thank you so this is it this is the chiller it has four compressors four bits or tandem compressors this is a bits or tandem compressor it's uh actually has two motors and two compressor heads on a single body so when you think about it that's four times two is actually eight compressors and every compressor has unloader unloaders on the cylinder heads so that there's multiple multiple stages of loading and unloading of this equipment behind you can't really see the back in here you're gonna there are shell and tube heat exchangers those are the evaporators they're rated for 5000 psi and then all this copper piping up here are the multiple refrigeration circuits that go outside to the air-cooled condenser so this is a typical refrigeration cycle the refrigerant starts here it gets compressed it goes clockwise through the air-cooled condenser and cools off then it goes through a thermal expansion valve and through the evaporator which is that shell and tube heat exchanger I mentioned and the way this works is that the natural gas goes through the evaporator and gets gets chilled as it goes the chiller skid is actually four separate compressors and refrigeration circuits so the packaged air-cooled condenser is one condenser outside with for refrigeration circuits in it the skid has four compressors and four evaporators in it and the natural gas sequentially goes through them in series so it gets colder and colder as it goes there's one more heat exchanger on this one more evaporator that's an economizer evaporator so they take the chilled natural gas and cross it with the incoming gas and it pre cools the incoming gas so the initial commissioning structuring plan was really kind of scant there weren't much in the way of specifications for the inspecting and the testing there really wasn't any specification for training although the the manufacturer did give training to that first set of operators unfortunately it got lost over the years and there was no specification for good quality O&M manuals or system manuals
hey did get a manual for the compressors themselves but as far as a whole system how it works how it should be operated and none of that was none of that was available when we took over the job we really had to do a lot of searching to find out you know what what is this thing and what does the owner really want yeah and I could tell you one thing the owner did not know what it needed or what it really wanted we just knew the thing didn't work okay then the the pre functional the initial pre functional process there was some factory Witness testing but it was come incomplete the report from the from the factory witnessed testing was that one compressor was operating and there was no load so that really didn't it didn't really do much for the pre functional exams there was a factory checkout report when the the system was shipped and it said how many pounds of refrigerant were in it and a few other just basic facts and very little of all this was recorded this is the factory checkout sheet for one of the chillers it talks about all its 463 phase it talks about that it had some NEMA 4x electronics that it was it took so many pounds of refrigerant and there was page 2 and that's everything so that was that was what we got there was no pre functional checkout of the installation itself the initial commissioning functional testing was better described as a startup yes they did start at they did get it running they did show the operators how to use it and then they left there's a short runtime they did almost no benchmarking so there really isn't a record of what the performance of the equipment was the day it was brand-new and installed and they had they just had really poor records so this is this is what we were up against when we walked into this project to Commission this HVAC chiller oh wait they don't have those in Barrow this is the this is the letter that was the documentation of the job complete it's a letter from the manufacturer that says yeah it works we started it at this time we ran it for 3 hours we got the temperature down to 42 below and we're leaving they were on the next plane there and they were on the next plane yeah the the technicians that were working there did take some notes and we do have those notes but between those two pages that's a hundred percent of the documentation of the functional testing and the check out of this equipment so those are the original functional checkout sheets by the way in the in the gas field and the oil fields of Alaska functional performance testing is called FCO functional checkout it's just the word they use they do have some pretty sophisticated procedures on a lot of machinery and systems up there so the recommissioning the first of all I'd like to point out this is a photograph of the of the site over here is a building that has some manifolds of piping in valves there are three different gas fields that come to converge right here and they first go into this building here then they're piped over to this building this is the primary gas handling facility in there you have some pressure regulators you have an electric room to control a bunch of equipment you'd have a boiler room because they do reheat the gas at times and then from here it's at 900 psi it is knocked down to 300 psi at a pressure regulator and it goes to the gas chiller facility that's where the chiller is installed we had to scope this project like Melissa said they didn't really know what they wanted we didn't really know what they had or you know there was some hearsay and some rumor memory of what it used to be or should have been but we didn't have a good idea of where to go with that so the first thing we did was we start you know asking questions and and doing some investigations we determined it needed some major refrigeration upgrades they it was low on pressure it couldn't keep the oil in the crankcase and those two things alone were just fatal to operating the refrigeration it also needed a complete PLC replacement the the plc that came with it was an obsolete Siemens product and it already lost its factory support it was programmed in a different language the the gas field had standardized on allen-bradley anyway and they had a lot of trained PLC operators or programmers that could work with the with the allen bradley it also didn't communicate the data as they wanted and they didn't have access to the native programming so they couldn't do any tweaking or adjusting or or modifying of the programming so the PLC had to go and that was that was a huge part of the job the commissioning Authority represented the owner in developing the RFPs and and then also in Val evaluating the proposals and selecting the contractors to do the work the OPR started out with me asking a whole bunch of annoying questions and they said well don't you know this already and I said well I could guess but I wouldn't be answering it the way you would answer it so for the first thing we had to find was what's the real set point the equipment was designed to make the gas 40 below zero so that was the design point but it is 40 the like it never gets warmer than 40 or is that the point where the equipment could start unloading the operators practiced did a few practice runs at different temperatures and decided that they could run the thing between 35 and 40 below that was really helpful because a machine that's made to run 240 has a hard time getting all the way to 45 below but it's pretty easy for it to get to 35 below and then and then modulate between 35 and 40 here's a picture a screenshot of the HMI via the human machine interface that's on the control panel you'll notice right here it's entering the the system at 7 degrees and then there's a little bit of residual cooling as it's going through that first economizer heat exchanger it enters the first compressor at 10 below it exits at 26 below it enters the next one at 26 below and go - 28 below then 28 below - 30 - below and then 30 - in this case - 41 below then you'll notice that as it leaves it goes through the economizer and it's warmed up 22 degrees - 19 below it's too bad that light is shining right on the screen there it makes a little bit hard to read so that 22 degrees from 41 below - 19 below actually got injected into here before it got to 7 so it was really 29 degrees when it entered the system and it was 19 below when it left the system and went to the mark went to market we had to determine what is the really seasonal operation is it only in the summer or it when the sun is shining and by the way that's what makes the gas need the chiller is because the gas shining on that 17 mile pipeline has a lot of solar gain and it it keeps the impurities in suspended in the gas so summer winter we asked a question and the operator said well we'd like to be able to run the thing in the winter if we have to now that's probably not during the the dark months but definitely it could be in October and it definitely could be in in March so here's a picture of us trying to get the system running in March we went up there the thing was caked with ice and snow we tarped it we put a heat truck on it we leaned ladders against it to keep the tarp from blowing away and by the way this was the the worst picture I could find I did it was a much better picture of the air-cooled condenser but you've all seen one it's just an air-cooled condenser the difference with this one is that it does have four completely separate refrigeration circuits in it the the design had to be modified so that they could run this thing in the winter and the operators are going to be putting a shelter over it the PLC shortfalls I kind of outlined them before it was a compatibility with what was standardized on the on their other operations it was data compatibility it was obsolescence in the chip itself and it was the the data and the oh and the native code they didn't have access to the native code so they couldn't do any tweaking of the programming this is a picture of the new HMI on the new control panel it's a touch screen and it's explosion-proof so we had to examine the hazards this is a class 1 div 2 facility what that means is that it's not normally dangerous or explosive atmosphere but it could be so everything has to be able to like not start next loschen if it ever had if there's ever a gas leak this is the the the HVAC a mechanical room it's adjacent to the the chiller room and this is not classified environment so what we have is poops which would what we have is an air handler a gas-fired air handler here we have some exhaust fans everything's controlled with a fire dampers fire smoke dampers I should say there's a small PLC right here which controls the operations of these it receives signals from the chiller and from the gas atmosphere monitor in the in the chiller room so it will know when to shut down there's a whole sequence of operations that it was supposed to undergo under different scenarios we did a kind of a matrix that had every piece of equipment on one side and any possible condition on the other side and then there was there were notes and and X's and Long's and offs and other information in the matrix saying what the system did when we got there we found out that because of the poor training that things have been overridden and some of the equipment was operating in reverse of what it was supposed to do so it's actually making things worse in the case of an explosive atmosphere instead of better we got that changed and we included that in some of our final checkout then finally the the commissioning plan went through the process the who what when where why and how of commissioning so we completely did a narrative of exactly who's gonna do what and how we're gonna proceed we issued the pre functional check sheets and we created them and then we issued them here's a picture of our refrigeration technician and the manufacturers rep down on their knees I think they're charging the refrigerant right here they're also they spent days crawling around on their hands and knees adjusting the the the system and getting it to operate in just the right temperatures if it's too cold it'll freeze up and you start slugging your compressors if it's too warm it's not making the temperatures and then of course there was the programming that had to have each staging and unloading sequencing so that it ran smoothly they spent days and days doing that I was really surprised that it took that much but it's very complicated piece of equipment our pre functional check sheets had for each compressor there was nameplate data and then there was also a construction check sheet then for the refrigeration system itself there was nameplate data the pipe the refrigerant the the flux the brazing filler metal all that sort of thing all the equipment that we added had its nameplate listed and then there was the construction side of the refrigerant system also and it it went through and see there was a repair on one of the compressors there was startup there was closeout closeout included all sorts of how would they call it chain of custody for hazardous materials there was a start-up record there was a record of how much refrigerant went in there all that sort of thing next we did the programmable logic controller replacement this is the plc right here these are terminal strips every wire is labeled nice and neat got the battery back up before we even started doing the pre functional check out on the installation there was a factory acceptance test our electrical engineer met the designer at their shop they went through a factory checkout of the whole PLC and it's control panel this is one of the things they did they did a point-to-point checkout this is the first of six pages of ladder diagrams and they went through and they annotated every single every single point along here they're all all recorded then they had a start up check sheet there was three pages of start up checking all the i/os one of the things we add into the project was a oil level detector this oil level detector had to be class 1 div 2 rated it had to withstand the refrigerant that it was submerged in well refrigerant and oil and it had to let CB withstand 400 psi and high temperatures so this was this was a upgrade to the control system from what it was when when we first started the project then we issued the functional performance tests now functional performance testing is what I call the fun easy part of commissioning because if you've done all the rest of it then this is it's just fun to watch this equipment work the way it's supposed to and it's it's kind of fun to push the buttons and have things happen what you're looking at here this is the primary gas handling facility and this green actuator is controlling a three-way valve from the boilers when the gas comes in in the winter time at 900 psi and 30 below zero and then goes through a pressure drop to 3300 psi it drops in temperature quite radically and it can become so cold that it can freeze up seals and actuators on other control valves so they have to have a means of reheating the gas we used that capability to impose artificial loads on the gas and so when we were doing the functional testing we tested it clear up to about 75 degrees incoming at full speed full flow the functional performance tests were about a 15 page test form it started out by just stating you know the some of the basics the there's an equipment matrix it had recording the initial conditions when it started then if you can read the fine print I don't know if you can it starts here it says raise the entering gas temperature by 10 degrees state two conditions and then we recorded all the conditions right here and then run for 30 minutes and then raise the temperature another 10 degrees and do it all over again we did that in 10 degree steps I think it was six or seven steps before we got all the way up to 65 degrees or whatever our final temperature was when we got it to the final temperature we went through and completed this matrix doing voltage and current and then gas leaving temperature entering and leaving temperatures the whole time we were able to get the gas flow rate from the operators they they're monitoring that all the time anyway so that was always annotated in the in the margins and let's see here's one of the technicians installing the the new PLC up here is his explosion-proof HMI screen which is facing outside the door it's got all the you saw the one face front of this stuff in here and then these are all of the sensors and actuators that went up to the original piece of equipment and he took those same sensors and actuators and terminated them in the new PLC and reused them the performance test for the PLC was 10 pages long it was written in a little bit different format we worked real closely with the with the PLC integrator to make sure that everything he had in there was on the test so that we could step through it in a logical order I'm just gonna throw you show you a few pages here when it was done you know we had to record things like for each tantum compressor you know there's there's there's a tube eight compressors there and so on so there was a little bit of scratching in the margins but it all got recorded then there was a benchmarking table at the end I think we had three pages of benchmarking and everything got signed there's a picture of the integrator testing out the new HMI if you look at this this is one of the electrical panels and it is the explosion-proof you can tell by all the the bolts and all that the oil management system that we had to add now I'm a mechanical engineer so this was the coolest part for me the what was happening was that the oil would get pumped out with the refrigerant and it wouldn't return adequately at some flow rates it was okay but it as the machine was unloading and and and going up and down and it's in it's a staging sometimes that oil would lose wood would get lost the crankcase level would drop you'd get a low level alarm and it shut down the compressor and these are the problems that Melissa was saying that the operators had they couldn't get it to work right so after the first season they just gave up on it what we added were oops what we added were coalescing
il filters for each compressor each tandem so there's four of these this coalescing oil filter the oil come in the the refrigerant the hot gas comes in the bottom the oil gets separated out of it and the gas continues up and out into the system while the oil gets separated out and goes through these dis tubing up into an oil reservoir oil reservoir is at high pressure and then it goes through a pressure regulator and come on over to this float valve on the compressor crankcase the foot valve acts kind of like the the float valve in your toilet when the water level gets too low it opens up the valve and that's more oil our water in well it does that same thing with oil the refrigeration upgrades also included all your basic refrigeration components there were service valves there were filters there were sight glasses there was a check valve right here it was it was a complete refrigeration upgrade we had to cut into the old piping install this and then send the refrigerant back out to the air-cooled condenser like it did before this is one of the cylinder on loaders incidentally while we were doing some of the test runs we noticed that the temperature of one of those reservoirs was getting a lot hotter than all the others and as we went through it we discovered that a valve in one of the compressors was leaking by these are reed valves they're not the valves like in an internal combustion engine so the reed valve was leaking and that meant that it was pushing a lot more gas and oil into the into the coalescing system and that meant it was cycling it all through way too fast as a result a change order was written for the refrigeration contractor and he disassembled one of these heads and replaced the reed valves then there was a project closeout we had to have training we had to develop the content we had to engage a videographer and schedule the trainees here we have a shot of the training getting started this is one of the operators right here don't be fooled by the overalls and hands in his pockets these guys are really sharp they just work comfortable clothes they were there for all of the training as well as the training was recorded here's our videographer and he's pinning a lapel mic on the the next trainer and here's a an example of how the training was conducted now all the training we're watching they were there they're just not in this in this photograph but the trainer was speaking to the camera and he had a lapel mic so that his audio was clear what that means is that when this was recorded and saved now they're going to have a good recording that they can show new hires they could do it once yeah Melissa has taken the training they can show as a refresher once a year to their existing employees and it actually is a meaningful training video yeah as the as the owner this this was priceless for us because we normally get an O&M Manuel Manuel goes on the shelf everybody knows where it's at what it's for nobody ever looks at it but this this was an excellent job so if you have owners this is something that you might want to consider if you have a job like this that it's complexed and the the train it was it's yeah it's priceless for us okay and remember you won't get it if you don't get it in the specs then we had the O&M manuals and they're way too big and way too bulky to show but I just have a few slides of examples for the refrigeration now this this harkens back to what Melissa was saying about the logistical difficulties of being in Barrow since almost everything comes by plane except for a very short window during the summer then hazmats hazardous materials liquids refrigerant pressurized gases even nitrogen is a hazardous material and can't go on a regular airplane when a when a contractor mobilizes up in the North Slope they usually ship extra materials because they know that you know being one bolt short can cost them five thousand dollars just in downtime and you know shipping of getting that material so this is the leftover materials refrigeration materials that the refrigeration contractor saved on a shelf in the the chiller room his gases that he used for purging and charging the ona manual of the equipment itself was highlighted so that you got a clear indication of of which coalescing filter was used there's a piping diagram of how it all fit together there was likewise there was a very thorough O&M manual for the plc and they they included the native programming and all the components that they had in there their product so the building commissioning process applied to a single piece of industrial gas field equipment we examine the equipment we went through the owners project requirements and we learned something by the way project specifications were developed we figured out what was needed like the training like the OEM manuals and so they were developed to meet the needs of the owner but planned suspects and I guess I just said that didn't I the owner was represented by qualified engineers during all of the upgrades hmm I can pat myself on the back actually I was just part of the team there were other very qualified engineers that did a lot more than I did technically I was really managing the process and I had an understanding of the technical part but I felt that my most important role is to manage the process itself the system system underwent a real rigorous FCO and a lot of benchmarking so that the owner really knows what the equipment can do what it did do when it was new and if this process is repeated in five years they'll be able to see if it's been degraded or anything like that yeah even though we are a small gas facility we still have the same requirements as BP and ConocoPhillips over in the gas field in Prudhoe Bay the project was accepted based on verifiable criteria and of course that was all recorded and it's all saved and we had a job complete this is the the chiller room right over here are those spare supply refrigeration supplies there the four compressors behind them are the four of the five actually evaporators and on the back side is the HMI and the electrical panels right here you'll see the exhaust fan these are from the supply fan this is the fire suppression here's all the refrigerant piping going out to the air-cooled condensers and here are two of the four coalescing filter system coalescing separator systems our lessons learned were that the building commissioning process can be applied to a non building application get the whole story really you look at a project you think I thought it was gonna be a chiller and it was a different chiller than what I thought I was going to be when I asked more questions than there were all kinds of new information that came up work with the owners develop your OPRS that's where the that's where you really get to understand what your what where what your primary objectives are and the owners can only expect thorough commissioning if they specify it it just doesn't happen by itself it's too big of a process something like this was a major project for us and and we're really proud to have been part of it so with that I want to say thank you very much for attending I'd be happy to answer questions if anybody has them now yes right here that's mm-hmm yeah that's a super good question that was the that was the crux of some really difficult times that we went through on this project when the chiller was specified they said hey give us this chiller and it was a performance spec and of course it was bid and this supplier custom-designed the chiller any custom device designed it to the specs then when they went and installed it he was up there for start-up he made a long list of things that should be done but it was running so they took the long list of things that should be done they put it in the own air manual and they put it on the shelf nobody ever looked at it again a coalescing oil filter was one of those things when we came back our refrigeration technician her mechanic was looking at it and he came up with the same recommendation so we started putting two and two together and we said hey Melissa I think we're gonna have to do this upgrade yeah as the owner I mean it's been a long time since this was in the engine you know in the design phase and as the owner that was something that we didn't we didn't understand that needed to happen for that piece of equipment and we did not have experienced operators to say hey before you check this off this should be half that we should have this piece so yeah we had no idea okay yes so now in the back we yes I am we have Amazon Prime and Amazon Prime is the best so we order everything we can possibly order on Amazon Prime yep yes right here it took about two years it took about two years we thought it was going to be a quick job over the summer and then all of a sudden we got slowed down by the next winter and then some more investigations and then we had to write RFPs and engage the contractors and then they had to build their materials especially the plc took some time and so it stretched out about two years before it was done any other questions yes it's the same as just regular refrigerant that you would have in a grocery store for the freezers and refrigerators yeah absolutely yeah the technician that came up he he maintains our store and our College has freezers and our School District refrigerators and freezers and so he maintains all of that it's our four for a our four for a and about that refrigeration company their website showed them maintaining and working on 7-eleven refrigerated cases and grocery store refrigerated cases and we were a little worried at first that they really didn't have this kind of industrial background but oh boy these guys are smart and when we got the manufacturers engineer and that guy together I think we had a whole world of knowledge and and they really set it up right any other questions well with that then I want to say thank you so much for attending it's been our pleasure to be here [Applause] you
