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Posts Tagged ‘ASME qualified ASME certified Welding Denver Fabrication Code ASME code’

An interesting project has come to our shop that is leading to a new welding procedure. The project is a simple stainless steel pressure vessel, 6” diameter pipe, 0.432” wall approximately 18” long. While this seems overly simple it has led me to investigate the welding options we have qualified for stainless in our shop. We have stainless hardwire, flux core, stick, and TIG procedures but which one to use? Flux core fills very fast, hardwire is clean and neat, TIG has an artistic look when done right but is slower then hardwire and flux core. Stick welding is smoky and unless the welder is REALLY good it just doesn’t look as nice as the others. I’m beginning to think multiple processes. If we hardwire the root then no backing gas is required (meaning we don’t have to purge the inside of the vessel to remove any oxygen exposure on the back side of the weld) then we can fill the majority of the weld joint with either spray arc hardwire or flux core and finish with TIG. We get a solid, quick welded joint that looks like art! But I don’t have a weld procedure that includes three different welding processes. Do I need to break out some stainless steel scrap and weld up a coupon using the three selected processes and have it tested? Conveniently, I do not. Because I have Procedure Qualification Reports (PQR’s) for all three processes I can write a new procedure using the existing PQR’s. I can take the information from each PQR and implement a new procedure that includes all three processes. Each process must be noted on the new weld procedure and the essential variables must also be noted. One other item to be sure to review, the thickness of the additive PQR’s must yield the thickness range required for the intended joint. Maintaining documentation of all our welding processes and procedures makes this an easy accomplishment, an accomplishment that allows us to utilize our knowledge and history to go forward. If you like the way a certain welding process looks but have been told it costs too much or takes too much time, give us a call. We’ll help you find a happy medium that yields beautiful welding and cost effectiveness.

TIG Cover Pass

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I have heard through the rumor mill that there are many companies that are waiting 6, 9, 12, and up to 18 months for TEMA type heat exchangers.  Not our customers!  Precision has built hundreds upon hundreds of TEMA Type heat exchangers for various processing plants through the years.  There are certainly tricks to building good quality heat exchangers (we believe our are as good or better than industry leaders) but all in all they are not too difficult to build.  Because there is nothing secret to the sauce, I cannot say I understand why a project manager or engineering firm would be willing to wait that long for a heat exchanger.

Precision Pipe has provided dozens HTRI designed, ASME certified, TEMA type heat exchangers to a variety of installations this year alone.  We keep hearing a common theme when we receive new purchase orders, “how does Precision Pipe build these so quickly”?  Really I’m not sure why it takes other’s so long, but I guess our advantage is that we are a custom fabrication shop with ASME Code stamps.   This means we don’t sell all of our capacity on a particular engineered product.  Rather, we respond to the needs of our clients by building vessels, components, complete turn key skid packages, tanks, and TEMA type heat exchangers.  We do have a few tricks we have learned since we built our first exchangers in the 1970’s but it isn’t anything magical… just a few tricks of the trade.

If you need high quality engineered Heat Exchangers don’t stand in line months upon months waiting.  Don’t believe for one second that you need a shop that only builds exchangers for a high quality product.  Shop around and see if you can find a shop that is eager to earn your business and can provide you with the same quality or better, HTRI designed, ASME certified, TEMA type heat exchanger(s).  Our turn around time is measured in weeks not months!

http://www.Precision-Pipe.com IMG_1940

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So far 2013 has been all about NGL (Natural Gas Liquids) processing equipment.  Because Precision Pipe has been building process equipment for NGL for over 30 years 2013 has proven to be a very busy year.  In addition, our clients (new and old) are looking for expertise in the field of gas processing equipment design and fabrication.  We have nearly completed fabrication on our 2 NGL process plants this year and we have a 3rd plant on order.  These plants have been turnkey units with fully integrated controls and electrical.  We are still building 1 off pressure vessels and various TEMA type heat exchangers but skid packages seem to be whats driving our markets.

Gas Plant

Precision Pipe, LLC Gas processing plants

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Since 1980 Precision has built its business by designing and building gas processing plants, chemical and processing plant components, and skid packaged equipment including, tanks, HRSG, boilers, re-boilers, compressors, separators, heat exchangers, filtration systems, dehydration, and dew point control for natural gas processing facilities. Precision has also built several catalytic reactors for specialized applications, slug catchers, pulsation bottles, scrubbers, oxygen service vessels, flow meters, gas valve trains, accumulators, and complete skid packages.

Precision provides it’s customers with consulting, design, engineering, and ASME calculations. Precision can also provide in shop and mobile ASME vessel repairs and rerates, hydro testing, machining, welding (including ASME “R” stamped repairs, inspection services including borescope video inspection.

Most importantly, Precision is commercially distinguished as a business that offers it’s clients much more than a typical fabrication and welding shop.  Precision has built a reputation and is known to provide resources and knowhow for sustainable advantages in technology and project development. Precision uses it’s decades of experience and knowhow to offer value added solutions to our clients projects and fabrication needs.  This often saves time and money on projects and prototyping that bring long term value to our clients.

ImageIn 2013, Precision will continue our 33 year history building processing plants and equipment with a focus on natural gas processing. The biggest difference is our new, state of the art, 40,000 Square foot fabrication facilities. If you have a project and you need an experienced, knowledgable, and well qualified manufacturer please allow us the privilege to provide your company with a competitive quote.

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 A fantastic Article found on: http://www.csb.gov/newsroom/detail.aspx?nid=293

November 09, 2009

Without appropriate safeguards, pressure vessels can pose lethal dangers.
Washington, DC, November 9, 2009 – CSB Chairman John Bresland released a new video safety message today asking jurisdictions across the country to adopt the ASME Pressure Vessel Code to reduce the number of accidents involving catastrophic pressure vessel failures in process industries.
The safety message can be viewed on CSB.gov and on the CSB’s safety message channel,www.youtube.com/safetymessages.
In the safety message, Chairman Bresland warned that without appropriate safeguards, pressure vessels can pose lethal dangers. Chairman Bresland said, “Pressure vessels store tremendous amounts of energy and you should never become complacent about the risks.”
Particular danger exists when vessels are improperly installed, welded, or modified, or when they lack effective pressure relief systems. Mr. Bresland refers to several incidents investigated by the CSB including an explosion at a Louisiana natural gas well that killed four workers when a tank rated only for atmospheric pressure was exposed to gas pressure up to 800 pounds per square inch.
In April 2003, an 8-foot tank used to heat sugar caramel exploded when the vent line became blocked, killing an overnight operator, releasing large amounts of ammonia, and forcing a community evacuation. The vessel had no pressure-relief system.
Additionally, in 2004 a pressure vessel weighing 50,000-pounds exploded at a chemical plant in Houston, Texas, throwing heavy fragments into the community, which damaged a church and businesses.  The CSB found that the company improperly modified and welded the vessel.
Chairman Bresland stated that these accidents can be avoided if states implement long-established codes for safe use. He said, “There are only eleven states that do not require companies to follow the Pressure Vessel Code of the American Society of Mechanical Engineers (ASME). I ask all jurisdictions to adopt the Pressure Vessel Code and related boiler standards. Lives will be saved as a result.”
The ASME Code provides the fundamental safeguards for pressure vessels, including design, welding procedures and fabrication, testing, and pressure relief. In 2006, the CSB called upon the City of Houston to adopt the Code to protect residents and industrial facilities from these incidents. However, Houston has failed to implement this recommendation despite reoccurring pressure vessel failures such as a summer of 2008 heat exchanger explosion in a resin-production facility that killed a veteran supervisor.
The CSB is an independent federal agency charged with investigating industrial chemical accidents. The agency’s board members are appointed by the president and confirmed by the Senate. CSB investigations look into all aspects of chemical accidents, including physical causes such as equipment failure as well as inadequacies in regulations, industry standards, and safety management systems.
The Board does not issue citations or fines but does make safety recommendations to plants, industry organizations, labor groups, and regulatory agencies such as OSHA and EPA.
A powerful reminder about the purpose of the ASME code and the dangers of not using a qualified and certified ASME code shop for repairs and alterations.  The nominal costs of making proper repairs to ASME pressure vessels is insignificant to the potential loss of human life. Likewise, the risk of installing non-code vessels is equally dangerous and potentially deadly.

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Since this summer Precision Pipe and Vessel, A Denver ASME welding and fabrication shop has built and delivered two 80 foot plus deethanizor and depropoanizer towers.  By all standards these are not the largest towers on the market, but are a large enough to serve a major sector in gas processing plants.  These towers were built in Denver and will be shipped all the way to Pennsylvania for their final installation.  This project was conducted with a Nationwide RFP process and it was discovered the Precision Pipe had a competitive price (even with expensive trucking costs) and even better delivery schedule.

As the gas boom seems to be gaining traction, it seems many ASME shops are becoming back logged with large vessels such as these.  Many gas processing companies turn to the same fabricators over and over again and are willing to wait months for delivery at the expense of production and revenue.  As project managers become familiar with companies they tend to turn to the same companies time and time again.  This is probably a safe bet with long established business relationships, but the petroleum is a high risk high reward kind of business.  From the early stages of drilling, installation, permitting, and well stimulation this is in all reality a high stakes business.

Any company that is seeking a competitive edge should be looking for energetic and motivated businesses qualified to provide the same products on a better delivery date (any ASME code vessel will require the same QA QC and inspection).  The cost of lost production is much more expensive than a few thousand dollars in added cost or even shipping, yet procurement specialist and project managers turn to the same companies over and over again without looking at the competitive advantage they may have by using a new vendor with better delivery times.  As dollars are wasted waiting for equipment it seems more logical to strike up new business relationships based on better delivery schedules. Give us a call and see if we can get you to revenue quicker than your go to guy, you might be surprised!

http://www.precision-pipe.com

Natural Gas Processing Equipment

304 Stainless deethanizer tower

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Denver, CO – July 19, 2011 – We are thrilled to announce today the introduction of our groundbreaking liquid carbon dioxide based fabric and textile cleaning machine. CO2Nexus is a Denver, CO-based company dedicated to developing equipment and consumables that use liquid carbon dioxide (CO2) to clean fabrics and textiles. We are a spin-out of the premier worldwide CO2 R&D entity – FeyeCon Development & Implementation B.V. We are also pleased to announce our partnership with Denver-based Revolution Cleaners, who will field the first dry cleaning unit at their Denver plant.
Liquid CO2 – the same substance that puts the fizz in every carbonated beverage – has excellent solvent properties and is intrinsically sustainable, since it is in-exhaustible, cheap, non-toxic, non-hazardous, non-flammable, and cannot spill into the soil or groundwater. Chemical based solvents currently used in the dry cleaning industry are being phased out and/or have health and liability risks. Water based laundering methods are taxing already severely depleted water resources, especially in the Western U.S.
The CO2 used in the CO2Nexus systems is recycled from existing industrial processes and as such is completely carbon neutral.
CO2Nexus will also field a system later this year targeting the industrial laundry market, in partnership with one of the largest U.S. based service providers in that market. Industrial laundry uses water as the primary cleaning solvent.
Richard Kinsman, CEO of CO2Nexus comments: “Chemical and water based dry cleaning and laundering methods have real consumer marketing and environmental-health liabilities that will only get worse. At the same time, the performance, operating costs, sustainability and consumer marketing benefits of CO2 are attractive and will continue to get better, which is why we believe it to be the best long term option. Our association with FeyeCon on the technology side, and with the primary service providers at the industry level assures us that we have both the scientific and practical basis to implement the technology.”
CO2Nexus will offer commercial units starting in Q1 of 2012.
Denver-based Precision Pipe & Vessel, LLC will serve as our manufacturing partner. Mr. Kinsman: “PPV has tremendous know-how and a real track record in gas processing equipment and components. They bring tremendous value to our organization and we are proud to be partnered with them.”
Edward Pizzarello of Revolution Cleaners confirms their involvement: “We’re excited to be able to install the first unit in our facility. Revolution Cleaners has been on the leading edge of CO2 cleaning in Denver for over 6 years. CO2 has been our only cleaning solvent, and we’re thrilled with the opportunity to move to the next generation of CO2 cleaning technology.”
State and federal agencies have established grant based incentives to encourage the adoption of CO2 based systems, beginning in CA. Other states are anticipated to follow.
About CO2Nexus Inc.
CO2Nexus Inc. designs and sells equipment that uses recycled liquid carbon dioxide (CO2 ) to replace water and chemical based cleaning solvents in dry cleaning and industrial laundry.  Liquid CO2  – the same substance used to “fizz” beverages –  is an intrinsically excellent cleaning solvent and, unlike other solvents, is in-exhaustible, cheap, non-toxic, non-hazardous, non-flammable, and leaves zero secondary waste. www.co2nexus.com
About Revolution Cleaners
Revolution Cleaners cleans exclusively with recaptured, liquid carbon dioxide (CO2 ) & water (H2O); positioning themselves as the most experienced dry cleaner in Colorado using these methods. CO2  and H2O are naturally effective cleaning agents for a wide range of garments and household items. The absence of heat in Revolution’s  cleaning process ensures that stains come out more readily and garments have a longer life. With Revolution, your clothes are cleaner, softer and fresher than with traditional dry cleaning methods. www.revolutioncleaners.com
About Precision Pipe & Vessel
Precision Pipe & Vessel (PPV) is a Denver-based fabrication facility with extensive experience in gas processing, alternative energy and the cleantech industry. They offer top notch engineering, fabrication and product development services to clients across the US. With a track record of successfully serving customers for over 30 years PPV has proven themselves to be a reliable and effective fabrication facility. www.precision-pipe.com

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