Resources for boiler codes and standards

Know the codes, standards, and resources when working on boilers and boiler system design.

04/17/2014


This article has been peer-reviewed.Perhaps the most widely accepted boiler and pressure code in the world is the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. This is an internationally recognized standard governing the design and construction of heating and power boilers and unfired pressure vessels. This code—most recently updated in 2013—is organized into 12 sections, including requirements for the nuclear power industry. Those most pertinent to the HVAC industry include:

  • Section I—Power Boilers: This section covers power boilers, electric boilers, miniature boilers, heat recovery steam generators, high-temperature water boilers, and certain fired pressure vessels for stationary service, and power boilers for locomotive, portable, and traction service. This standard applies to steam boilers generating steam at more than 15 psi and hot water boilers generating hot water at temperatures over 250 F or pressures higher than 160 psi.
  • Section II—Materials: This covers specifications and properties for ferrous and nonferrous materials.
  • Section IV—Heating Boilers: A heating boiler is a steam boiler with design pressure less than 15 psi or a hot water boiler with design pressure less than 160 psi and design temperature less than 250 F. This section covers rules for the design and construction of heating boilers.
  • Section V—Nondestructive Examination: This section contains radiographic, ultrasonic, and liquid penetrant examination methods required by other code sections, which detect discontinuities in materials, welds, and fabricated parts and components.
  • Section VI—Recommended Rules for Care and Operation of Heating Boilers: This has guidelines applicable to steel and cast iron boilers within the operating range for Section IV—Heating Boilers, including associated controls and automatic fuel burning equipment.
  • Section VII—Recommended Guidelines for the Care of Power Boilers: This section has guidelines applicable to stationary, portable, and traction type boilers within the operating range for Section I—Power Boilers, to assist operators in maintaining plant safety.
  • Section VIII—Pressure Vessels: This section has three divisions, the first covering fired and unfired pressure vessels operating in excess of 15 psig, the second covering alternative rules for the design of pressure vessels by analysis, and the third covering high-pressure vessels.
  • Section IX—Welding and Brazing Qualifications: it has rules for qualification of welding and brazing procedures and welders, brazers, and welding and brazing operators for component manufacture.

Other ASME codes that establish standards for boiler system components include the B31 series for piping and the CSD series for controls and safety devices. Sometimes boiler specifications, particularly for large boilers, reference ASME Test Codes with regard to measuring boiler performance. The most common of these in the HVAC and building construction industry are:

  • ASME B31.1: Power Piping (2012 edition) covers nonboiler external piping from a boiler operating above 15 psi, including central and district heating piping systems that distribute the steam or hot water to buildings. ASME B31.1 also covers piping within buildings that exceeds the service limits of B31.9.
  • ASME B31.9: Building Services Piping (2011 edition) covers piping within the building, including boiler external piping not over 15 psi for steam or 250 F and/or 160 psi that does not exceed the specified service limits. Large and heavy wall pipe is excluded. Steam, condensate, and compressed gases at pressures above 150 psi, liquids above 350 psi, steam and condensate over 366 F, other gases and vapors more than 200 F, and all other liquids more than 250 F are excluded.
  • ASME CSD-1: Controls and Safety Devices for Automatically Fired Boilers (2012 edition).

ASME performance test codes also are used to determine efficiency and capacity of boilers and boiler system components, particularly for large, nonresidential equipment.

Code and standards to law

State and municipal building and mechanical codes, and state and municipal boiler and pressure vessel codes adopted through legislative process by states and localities are the vehicles by which a recognized code or standard becomes law. The most widely used and referenced model building, plumbing, and mechanical codes in the United States are currently the International Code Series produced by the International Code Council.

The ASME Boiler and Pressure Vessel Code and the National Board (NB) of Boiler & Pressure Vessel Inspectors Standards form the basis for most state and local occupational safety and health laws relating to boiler and pressure vessel safety. The state laws typically generally adopt the ASME and NB rules, some with state-specific modifications for their application. State laws frequently lag a few years behind the most recent version of the code due to the time it takes for updates to pass through the legislative process.

ASME B31.9 Building Services Piping

ASME also provides standards related to qualifications for authorized inspection of boilers and pressure vessels and also operator qualification.

National Board of Boiler & Pressure Vessel Inspectors (NBBPVI): This organization is composed of chief inspectors for jurisdictions within North America and Mexico and exists to promote uniformity in the design, construction, installation, maintenance, alteration, and repair of pressure containing systems including boilers.

  • ANSI/ NBBPVI-23 is a standard that provides rules and guidelines for in-service inspection, repair, and alteration of pressure-retaining items.
  • NBBPVI 264 Criteria for Registration of Boilers, Pressure Vessels, and Pressure Retaining Items presents a uniform criteria for a manufacturer's registration of its certification that a given boiler has been manufactured to an acceptable standard.

ASHRAE: This society provides many resources related to the design and performance assessment of boiler systems, including the Handbook Series, ASHRAE Standard 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings, and ASHRAE Standard 118.1 (2012): Electric, and Oil Service Water Heating Equipment.

ASHRAE 90.1 defines minimum efficiency requirements for gas and oil-fired boilers.

ASHRAE 118.1 is applicable to electric resistance, electric air-source heat pump, gas-fired, and oil-fired water-heating equipment, including hot water supply boilers with input ratings less than 12.5 million Btu/h (3660 kW) and greater than:

  • Electric resistance 12 kW
  • Electric heat pump 6 kW (including all 3 phase regardless of input)
  • Gas-fired 75,000 Btu/h (22 kW)
  • Oil-fired 105,000 Btu/h (31 kW).

<< First < Previous 1 2 Next > Last >>

DHANANJAY , Non-US/Not Applicable, India, 05/22/14 12:37 AM:

Very comprehensive checklist of all the applicable ASME Codes and Standards for Designing Boilers and Boiler Systems.
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
The true cost of lubrication: Three keys to consider when evaluating oils; Plant Engineering Lubrication Guide; 11 ways to protect bearing assets; Is lubrication part of your KPIs?
Contract maintenance: 5 ways to keep things humming while keeping an eye on costs; Pneumatic systems; Energy monitoring; The sixth 'S' is safety
Transport your data: Supply chain information critical to operational excellence; High-voltage faults; Portable cooling; Safety automation isn't automatic
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Maintaining low data center PUE; Using eco mode in UPS systems; Commissioning electrical and power systems; Exploring dc power distribution alternatives
Synchronizing industrial Ethernet networks; Selecting protocol conversion gateways; Integrating HMIs with PLCs and PACs
Why manufacturers need to see energy in a different light: Current approaches to energy management yield quick savings, but leave plant managers searching for ways of improving on those early gains.

Annual Salary Survey

Participate in the 2013 Salary Survey

In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.

Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.

2012 Salary Survey Analysis

2012 Salary Survey Results

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.