Boilers, Pressure Vessels

The Electronic Safety and Licensing Application (eSLA) is now live for Boilers and Pressure Vessels. Customers must use eSLA to submit plan reviews/permits, as well as search the Public Lookup for this program area.

Visit to get started, or go to the Customer Information​ page for instructions on first-time login.

Safety requirements are​ enforced by the Division of Industry Services (DIS) staff for power boilers, heating boilers, pressure vessels, and nuclear power plant components. Shop and field consultation and inspections are provided. Boiler repairers are registered and boiler inspectors are certified.

​Questions regarding​ ​the boilers and pressure vessels code can be sent to DSPSSBBoilertech@wisconsin​.gov.

Report an Accident

To report a Boiler or Pressure Vessel accident during regular business hours please call 608-622-6587. ​After hours, weekends, or holidays, please call Wisconsin Emergency Management after-hours incident reporting at 1(800) 943-0003 ext. 2 for assistance.​


Permit and Invoice Questi​ons

Please email​ to update the owner and/or address, to request a replacement permit to operate, or to answer a general invoice inquiry question.​​




Application for the National Board Boiler Inspector Commission/Endorsement Examination 
SBD-4341​Inspection Report and Orders (Continued) 
​Boiler Regulated Object Inspection Report ​
SBD-10663-E​UPV Unfired Pressure Vessel Regulated Object Inspection Report 
SBD-10892​Pressure Vessel for Human Occupancy Inspection Checklist 
​SBD-10893​Historical / Hobby Boiler Inservice Inspection Requirements Checklist 
SBD-10894​Historical / Hobby Boiler Internal and Hydro Checklist 
SBD-10896​Solid Fuel-Fired Burning Water-Heating Appliance Checklist 
Hydronic Boiler Checklist​Hydronic Heating Boiler Checklist 
​Steam Boiler Checklist​Steam Heating Boiler Checklist 
Unfired Vessel Checklist​Unfired Pressure Vessel Checklist 
Power Boiler Checklist​ASME-Section 1 Power Boiler Checklist 
ASME B31 Piping Checklist
ASME B31 Piping Checklist
​Power Piping Checklist ASME B31 (PDF)

Power Piping Checklist ASME B31 (fill-in)
SBD-9890X​Application for Review, Petition for Variance



Guideline to Power Piping
Guideline to Power Piping in State of WI SPS 341
​Power Piping/Welded Refrigeration Piping Installation Registration (PDF)
Power Piping/Welded Refrigeration Piping Installation Registration (fill-in)
Boiler and Unfired Pressure Vessel Registration (PDF)
Boiler and Unfired Pressure Vessel Registration (fill-in)
​SBD-10787-E​Boiler and Pressure Vessel Accident Report
NB 405​National Board Initial Boiler Certification Report Form C1, NB405
​Test Log​Safety Valve Test Log 


Reminders for Boiler and Pressure Vessel Inspectors
Boiler Pressure Vessel​Brochure describing DIS Boiler and Pressure Vessel Program
SBD-10879​Brochure describing DIS Solid Fuel-Fired Water Heating Appliance
Historical Hobby Boilers​Brochure describing DIS Historical/Hobby Boiler Program
Memo SBD-10903​Boiler Temperature Limit Controls Memo
​Guidlines-Backflow Protection​Guidelines for Backflow Protection of Steam and Hot Water Boilers
Contractor Memo​HVAC Equipment Replacement Information
Damarc Inspection Memo​Damarc Quality Inspection Service Memo about the Safety and Buildings Division boiler, pressure vessel, and mechanical refrigeration inspection systems having Damarc as an agent 
Relief Valve Install​Steam Safety and Hot Water Relief Valve Installation Requirements for Boilers
Conversion Tables​Cylindrical Tank Conversion Tables
Power Piping Directive​Power Piping Inspection Directive
Credentialing Requirements​Credentialing Requirements, Boiler Industry Days 2016
Rules for Water Heaters
​Rules for Water Heaters Used for Space Heating