--- title: Field Repair or Modification of an ASME-Stamped Pressurized Vessel description: The process is very specific to keep and maintain ASME certification after a repair in the field to a pressurized vessel has been made. image: https://blogs.heattransfersales.com/hubfs/Blog_images/index.jpg --- [![HTS_Logo_RGB_and_White](https://blogs.heattransfersales.com/hs-fs/hubfs/HTS_Logo_RGB_and_White.png?width=270&height=81&name=HTS_Logo_RGB_and_White.png "HTS_Logo_RGB_and_White")](http://www.heattransfersales.com) - [Home](https://heattransfersales.com/) - [Products](https://heattransfersales.com/products) - [Manufacturers Represented](https://heattransfersales.com/products) - [Packaged Systems](https://heattransfersales.com/products) - [Customer Service](https://heattransfersales.com/customer-service) - [Parts](https://heattransfersales.com/parts) - [Pump Repair](https://heattransfersales.com/pump-repair) - [Service](https://heattransfersales.com/service) - [Pump'nFlo](https://heattransfersales.com/pump-nflo) - [Resources](https://heattransfersales.com/resources) - [Training](https://heattransfersales.com/training) - [Sustainable System Concepts](https://heattransfersales.com/sustainable-system-concepts) - [Airside HVAC](https://heattransfersales.com/hvac-equipment) - [Plumbing Equipment](https://heattransfersales.com/plumbing-equipment) - [Building Automation](https://heattransfersales.com/building-automation) - [Blog](https://blogs.heattransfersales.com/blog) - [Careers](https://heattransfersales.com/careers) - [About Us](https://heattransfersales.com/about-us) - [History](https://heattransfersales.com/history) - [Privacy Policy](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_f6100e8b535d465f9fb060f60f8049cc.pdf) - [Terms of Use](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_8a108a4c73734c8ca00866bdecf7cb60.pdf) - [Contact](https://heattransfersales.com/contact) ### Topics - Select a Topic ### Stay up to date SUBSCRIBE TO OUR BLOG ### Stay up to date [General Knowledge](https://blogs.heattransfersales.com/blog/topic/general-knowledge) # Field Repair or Modification of an ASME-Stamped Pressurized Vessel ![Picture of Tyson Williams](https://blogs.heattransfersales.com/hubfs/Company_images/Tyson_Williams.jpg) By [Tyson Williams](https://blogs.heattransfersales.com/blog/author/tyson-williams) on June, 3 2016 [mailto:?body=https://blogs.heattransfersales.com/blog/field-repair-or-modification-of-an-asme-stamped-pressurized-vessel](mailto:?body=https://blogs.heattransfersales.com/blog/field-repair-or-modification-of-an-asme-stamped-pressurized-vessel) ![index.jpg](https://blogs.heattransfersales.com/hubfs/Blog_images/index.jpg) ![ASME R Stamp](https://blogs.heattransfersales.com/hs-fs/hubfs/r_stamp.jpg?width=148&name=r_stamp.jpg)Have you ever had a situation where your ASME stamped pressurized vessel needed to be field modified or repaired? Hopefully you haven’t but, if you have, you are well aware of how extensive of a process it is to keep and maintain [ASME certification](https://www.asme.org/shop/certification-accreditation) after a repair in the field has been made. Recently, I was made aware of a situation where someone clearly had not played by the rules and followed correct protocol. I won’t focus on what was done to this equipment and fortunately no one was hurt in the time that lapsed before being identified. Instead, I wish to share a brief overview of the proper procedure for obtaining an ASME “R” stamp. Prior to beginning any field repair of an ASME stamped pressurized vessel, one should always first consult the manufacturer and/or manufacturer’s representative to make them aware of the issue, as there may be manufacturer specific protocols that should be adhered to. The manufacturer or manufacturer’s representative will guide you through the appropriate equipment specific measures and consulting with an authorized ASME inspector will cover the on-site process.   Remember that without following the proper steps, **you will void the original ASME stamp, substantially increase liability, and cause workplace safety issues for your staff, your customers, and yourself.** One should **NEVER** modify an ASME stamped vessel without following the proper steps and having an authorized ASME inspector’s approval on: - Qualified Material with Documentation (steel and pipe) - Supporting Calculations for Material - Qualified/Certified Welder and Welding Procedures - Authorized ASME Inspector to Witness On-Site Hydro Testing - Authorized ASME Inspector to Witness the “R” Test and Attachment of Stamp to vessel - Register the “R” Alteration with the National Board \*\*\* Pressurized vessels must meet all National, State, and Local Codes. \*\*\* So before you make any field repairs, please make sure you follow correct protocol to keep your workplace safe and to keep that ASME stamp on your pressurized vessels. [![New Call-to-action](https://no-cache.hubspot.com/cta/default/715354/51df1c76-0871-435d-8c30-11cf1f125675.png)](https://cta-redirect.hubspot.com/cta/redirect/715354/51df1c76-0871-435d-8c30-11cf1f125675) ###### About The Author [More from this author](https://blogs.heattransfersales.com/blog/author/tyson-williams) ![](https://blogs.heattransfersales.com/hs-fs/hubfs/Company_images/Tyson_Williams.jpg?height=100&name=Tyson_Williams.jpg) ###### Tyson Williams #### Recommended Articles [![4 Benefits of Switching to a Hydronic HVAC System](https://blogs.heattransfersales.com/hubfs/h4qhtnb3.png)](https://blogs.heattransfersales.com/blog/4-benefits-of-switching-to-a-hydronic-hvac-system) ###### [4 Benefits of Switching to a Hydronic HVAC System](https://blogs.heattransfersales.com/blog/4-benefits-of-switching-to-a-hydronic-hvac-system) - December 6, 2022 [![Troubleshooting Mechanical Room Noises](https://blogs.heattransfersales.com/hubfs/ergdfb.png)](https://blogs.heattransfersales.com/blog/troubleshooting-mechanical-room-noises) ###### [Troubleshooting Mechanical Room Noises](https://blogs.heattransfersales.com/blog/troubleshooting-mechanical-room-noises) - August 19, 2022 [![Removing Iron Oxide in Hydronic HVAC Systems](https://blogs.heattransfersales.com/hubfs/Screenshot%202019-02-06%2010.46.26.png)](https://blogs.heattransfersales.com/blog/how-to-combat-iron-oxide-in-hydronic-hvac-systems-0) ###### [Removing Iron Oxide in Hydronic HVAC Systems](https://blogs.heattransfersales.com/blog/how-to-combat-iron-oxide-in-hydronic-hvac-systems-0) - June 30, 2021 Search Article ### Popular Posts ### Stay up to date ### Recent Post ### Recent Posts [A Look at Why the Riello Array Has Won So Many Awards](https://blogs.heattransfersales.com/blog/a-look-at-why-the-riello-array-has-won-so-many-awards) - 3 June, 2016 [Replacing Outdated Boilers to Meet New DOE Standards](https://blogs.heattransfersales.com/blog/replacing-outdated-boilers-to-meet-new-doe-standards) - 3 June, 2016 [3 “NEED TO KNOWS” ABOUT DHW SYSTEMS](https://blogs.heattransfersales.com/blog/3-need-to-knows-about-dhw-systems) - 3 June, 2016 [4 Benefits of Switching to a Hydronic HVAC System](https://blogs.heattransfersales.com/blog/4-benefits-of-switching-to-a-hydronic-hvac-system) - 3 June, 2016 [Why Prefabricated Pumping Systems Ease System Design](https://blogs.heattransfersales.com/blog/why-prefabricated-pumping-systems-ease-system-design) - 3 June, 2016 ###### ABOUT THE COMPANY ![HTS_Symbol_RGB](https://blogs.heattransfersales.com/hubfs/HTS_Symbol_RGB.png) ### Heat Transfer Sales, LLC We are proponents of sustainable and efficient hydronic heating and cooling building solutions, which are at the heart of commercial green building. - - - - ### Topics - [Design Engineer Tips (109)](https://blogs.heattransfersales.com/blog/topic/design-engineer-tips) - [General Knowledge (95)](https://blogs.heattransfersales.com/blog/topic/general-knowledge) - [Building Owner Tips (70)](https://blogs.heattransfersales.com/blog/topic/building-owner-tips) - [Pumps (56)](https://blogs.heattransfersales.com/blog/topic/pumps) - [Manufacturer Information (46)](https://blogs.heattransfersales.com/blog/topic/manufacturer-information) - [Boilers and Water Heaters (40)](https://blogs.heattransfersales.com/blog/topic/boilers-and-water-heaters) - [Efficiency (22)](https://blogs.heattransfersales.com/blog/topic/efficiency) - [Training (22)](https://blogs.heattransfersales.com/blog/topic/training) - [Webinars (18)](https://blogs.heattransfersales.com/blog/topic/webinars) - [Customer Service (17)](https://blogs.heattransfersales.com/blog/topic/customer-service) - [Energy Savings (14)](https://blogs.heattransfersales.com/blog/topic/energy-savings) - [Air Curtains (13)](https://blogs.heattransfersales.com/blog/topic/air-curtains) - [HVAC (12)](https://blogs.heattransfersales.com/blog/topic/hvac) - [Metraflex (12)](https://blogs.heattransfersales.com/blog/topic/metraflex) - [infrared Heating (12)](https://blogs.heattransfersales.com/blog/topic/infrared-heating) - [Products (10)](https://blogs.heattransfersales.com/blog/topic/products) - [HVAC Design Tools (9)](https://blogs.heattransfersales.com/blog/topic/hvac-design-tools) - [PDH Credits (9)](https://blogs.heattransfersales.com/blog/topic/pdh-credits) - [Parts (9)](https://blogs.heattransfersales.com/blog/topic/parts) - [Hydronic (8)](https://blogs.heattransfersales.com/blog/topic/hydronic) - [Filtration (7)](https://blogs.heattransfersales.com/blog/topic/filtration) - [Boilers (6)](https://blogs.heattransfersales.com/blog/topic/boilers) - [Taco (6)](https://blogs.heattransfersales.com/blog/topic/taco) - [Piping (4)](https://blogs.heattransfersales.com/blog/topic/piping) - [Raypak (4)](https://blogs.heattransfersales.com/blog/topic/raypak) - [Schwank (4)](https://blogs.heattransfersales.com/blog/topic/schwank) - [Valves (4)](https://blogs.heattransfersales.com/blog/topic/valves) - [Variable Frequency Drives (4)](https://blogs.heattransfersales.com/blog/topic/variable-frequency-drives) - [Water (4)](https://blogs.heattransfersales.com/blog/topic/water) - [Water Purification (4)](https://blogs.heattransfersales.com/blog/topic/water-purification) - [Burners (3)](https://blogs.heattransfersales.com/blog/topic/burners) - [Commercial Boiler (3)](https://blogs.heattransfersales.com/blog/topic/commercial-boiler) - [Cooling Towers (3)](https://blogs.heattransfersales.com/blog/topic/cooling-towers) - [Green Building Design and Equipment (3)](https://blogs.heattransfersales.com/blog/topic/green-building-design-and-equipment) - [Pump'nFlo (3)](https://blogs.heattransfersales.com/blog/topic/pumpnflo) - [Riello (3)](https://blogs.heattransfersales.com/blog/topic/riello) - [About us (2)](https://blogs.heattransfersales.com/blog/topic/about-us) - [Expansion Joints (2)](https://blogs.heattransfersales.com/blog/topic/expansion-joints) - [Outdoor Dining (2)](https://blogs.heattransfersales.com/blog/topic/outdoor-dining) - [Pump Selection (2)](https://blogs.heattransfersales.com/blog/topic/pump-selection) - [Technician Tips (2)](https://blogs.heattransfersales.com/blog/topic/technician-tips) - [humidification (2)](https://blogs.heattransfersales.com/blog/topic/humidification) - [pure humidifier (2)](https://blogs.heattransfersales.com/blog/topic/pure-humidifier) - [AERCO (1)](https://blogs.heattransfersales.com/blog/topic/aerco) - [Air Release Valve (1)](https://blogs.heattransfersales.com/blog/topic/air-release-valve) - [Anchor Load Calculations (1)](https://blogs.heattransfersales.com/blog/topic/anchor-load-calculations) - [Chillers (1)](https://blogs.heattransfersales.com/blog/topic/chillers) - [Closed-Coupled Design (1)](https://blogs.heattransfersales.com/blog/topic/closed-coupled-design) - [Commercial HVAC (1)](https://blogs.heattransfersales.com/blog/topic/commercial-hvac) - [Commercial Range (1)](https://blogs.heattransfersales.com/blog/topic/commercial-range) - [Compensator (1)](https://blogs.heattransfersales.com/blog/topic/compensator) - [Cooling (1)](https://blogs.heattransfersales.com/blog/topic/cooling) - [Delegated Design (1)](https://blogs.heattransfersales.com/blog/topic/delegated-design) - [Digital Gas Heater (1)](https://blogs.heattransfersales.com/blog/topic/digital-gas-heater) - [Expansion Tanks (1)](https://blogs.heattransfersales.com/blog/topic/expansion-tanks) - [Externally Pressurized Joint (1)](https://blogs.heattransfersales.com/blog/topic/externally-pressurized-joint) - [Guide Spacing Requirements (1)](https://blogs.heattransfersales.com/blog/topic/guide-spacing-requirements) - [Heaters (1)](https://blogs.heattransfersales.com/blog/topic/heaters) - [Hospitals (1)](https://blogs.heattransfersales.com/blog/topic/hospitals) - [LEED (1)](https://blogs.heattransfersales.com/blog/topic/leed) - [LPD Strainer (1)](https://blogs.heattransfersales.com/blog/topic/lpd-strainer) - [Make-up Water (1)](https://blogs.heattransfersales.com/blog/topic/make-up-water) - [Metal Expansion Joints (1)](https://blogs.heattransfersales.com/blog/topic/metal-expansion-joints) - [MetraPak (1)](https://blogs.heattransfersales.com/blog/topic/metrapak) - [Metraloop (1)](https://blogs.heattransfersales.com/blog/topic/metraloop) - [New Product (1)](https://blogs.heattransfersales.com/blog/topic/new-product) - [PAX Series (1)](https://blogs.heattransfersales.com/blog/topic/pax-series) - [Pipe Penetration Seal (1)](https://blogs.heattransfersales.com/blog/topic/pipe-penetration-seal) - [Potable Water Systems (1)](https://blogs.heattransfersales.com/blog/topic/potable-water-systems) - [Project Files (1)](https://blogs.heattransfersales.com/blog/topic/project-files) - [Pump collector (1)](https://blogs.heattransfersales.com/blog/topic/pump-collector) - [Quiz (1)](https://blogs.heattransfersales.com/blog/topic/quiz) - [Refrigerant (1)](https://blogs.heattransfersales.com/blog/topic/refrigerant) - [Restaurant Patios (1)](https://blogs.heattransfersales.com/blog/topic/restaurant-patios) - [Riser Anchor Clamp (1)](https://blogs.heattransfersales.com/blog/topic/riser-anchor-clamp) - [SST Series (1)](https://blogs.heattransfersales.com/blog/topic/sst-series) - [Steam (1)](https://blogs.heattransfersales.com/blog/topic/steam) - [SuctionDiffuserFlex (1)](https://blogs.heattransfersales.com/blog/topic/suctiondiffuserflex) - [System Feed Units (1)](https://blogs.heattransfersales.com/blog/topic/system-feed-units) - [VRF (1)](https://blogs.heattransfersales.com/blog/topic/vrf) - [VaneFlex (1)](https://blogs.heattransfersales.com/blog/topic/vaneflex) - [Vertical Inline (1)](https://blogs.heattransfersales.com/blog/topic/vertical-inline) - [Y-Strainer (1)](https://blogs.heattransfersales.com/blog/topic/y-strainer) - [YANMAR (1)](https://blogs.heattransfersales.com/blog/topic/yanmar) - [seismic breakaway hanger (1)](https://blogs.heattransfersales.com/blog/topic/seismic-breakaway-hanger) - [superTube (1)](https://blogs.heattransfersales.com/blog/topic/supertube) see all [![New Call-to-action](https://no-cache.hubspot.com/cta/default/715354/d9a35e17-d3c8-44b5-91e0-47a3bcfea5f0.png)](https://cta-redirect.hubspot.com/cta/redirect/715354/d9a35e17-d3c8-44b5-91e0-47a3bcfea5f0) #### Submit a Comment ### Get latest articles directly in your inbox, stay up to date SUBSCRIBE TO OUR BLOG **Our Location** Headquarters 4101 Beechwood Drive, Greensboro, NC 27410 [Get Directions](https://www.google.com/maps/place/4101+Beechwood+Dr,+Greensboro,+NC+27410/@36.0544034,-79.9484879,17z/data=!3m1!4b1!4m5!3m4!1s0x8853051e63c99b6d:0x24b2c5a3927d7634!8m2!3d36.0544034!4d-79.9462992) **Contact Us** 336.294.3838 [info@heattransfersales.com](mailto:info@heattransfersales.com) [![Untitled design - 2020-11-19T112748.776](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112748.776.png?width=24&name=Untitled%20design%20-%202020-11-19T112748.776.png)](https://www.linkedin.com/company/heat-transfer-sales-of-the-carolinas-inc) [![Untitled design - 2020-11-19T112815.271](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112815.271.png?width=24&name=Untitled%20design%20-%202020-11-19T112815.271.png)](https://www.facebook.com/HeatTransferSales/) [![Untitled design - 2020-11-19T112835.473](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112835.473.png?width=24&name=Untitled%20design%20-%202020-11-19T112835.473.png)](https://twitter.com/htscarolinas) [![Untitled design - 2020-11-19T112859.003](https://blogs.heattransfersales.com/hs-fs/hubfs/Untitled%20design%20-%202020-11-19T112859.003.png?width=24&name=Untitled%20design%20-%202020-11-19T112859.003.png)](https://www.youtube.com/channel/UCX51QZbsuqCtu2PxtW9jMEg) - [Home](https://heattransfersales.com/) - [Products](https://heattransfersales.com/products) - [Manufacturers Represented](https://heattransfersales.com/products) - [Packaged Systems](https://heattransfersales.com/products) - [Customer Service](https://heattransfersales.com/customer-service) - [Parts](https://heattransfersales.com/parts) - [Pump Repair](https://heattransfersales.com/pump-repair) - [Service](https://heattransfersales.com/service) - [Pump'nFlo](https://heattransfersales.com/pump-nflo) - [Resources](https://heattransfersales.com/resources) - [Training](https://heattransfersales.com/training) - [Sustainable System Concepts](https://heattransfersales.com/sustainable-system-concepts) - [Airside HVAC](https://heattransfersales.com/hvac-equipment) - [Plumbing Equipment](https://heattransfersales.com/plumbing-equipment) - [Building Automation](https://heattransfersales.com/building-automation) - [Blog](https://blogs.heattransfersales.com/blog) - [Careers](https://heattransfersales.com/careers) - [About Us](https://heattransfersales.com/about-us) - [History](https://heattransfersales.com/history) - [Privacy Policy](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_f6100e8b535d465f9fb060f60f8049cc.pdf) - [Terms of Use](https://324b4bc7-5729-4ace-b8c0-bc77b425b76e.filesusr.com/ugd/ff46b9_8a108a4c73734c8ca00866bdecf7cb60.pdf) - [Contact](https://heattransfersales.com/contact) ![HTS_Logo_Symbol_White_CMYK](https://blogs.heattransfersales.com/hs-fs/hubfs/HTS_Logo_Symbol_White_CMYK.png?width=52&height=52&name=HTS_Logo_Symbol_White_CMYK.png "HTS_Logo_Symbol_White_CMYK") All content © 2020, Heat Transfer Sales