Question of the Month: 2012

Question of the Month for December 2012

Where can I find information regarding where in Wisconsin the test is given for a National Board Commission?

Answer: You may contact Mike Verhagen, Safety and Buildings Division Welding Consultant, 262-548-8617,

mike.verhagen@wi.gov.

Question of the Month for November 2012

What kind of fire barrier separation is required for a boiler?

Answer: If a boiler is 15 psi AND 10 horsepower, then the requirements in International Building Code Table 508.2 apply.

Combustion air requirements provided by a mechanical air supply system are defined under the

International Fuel Gas Code 304.9 through 304.16.

Question of the Month for October 2012

What Wisconsin code applies to air systems?

Answer: Wisconsin has adopted no specific code unique to air systems, but encourages the use of ASME B31.1

Power Piping Code in this application.

Question of the Month for September 2012

What is the significance of being able to calculate the kinetic energy of steam?

Answer: By knowing this value, it is possible to predict the steam velocity and therefore

the mass flow of steam through control valves and nozzles.

Question of the Month for August 2012

Is there any limit on the size of a boiler that fires with used oil?


Answer: There are no limit requirements in SPS 341, Boilers and Pressure Vessels Code. Note there are requirements for storage of oil in Comm 10, Flammable and Combustible Liquids Code. The US EPA and the Wisconsin DNR may have rules related to boilers and used oil.

Question of the Month for July 2012

Are Canadian-built boilers allowed to be used in Wisconsin?

Answer: Yes, as long as they meet the requirements of Canadian standard CSA B51. The Manufacturers Data Report (MDR) for that boiler should be reviewed.

Question of the Month for June 2012

What kind of fire barrier separation is required for a boiler?


Answer: If a boiler is 15 psi AND 10 horsepower, then the requirements in International Building Code Table 508.2 apply. Combustion air requirements provided by a mechanical air supply system are defined under the International Fuel Gas Code 304.9 through 304.16.

Question of the Month for May 2012

What is the meaning of Boiler Horse Power ?

Answer: Horse Power is a unit of measurement of the ability of a boiler to evaporate water, usually given as
the ability to evaporate 34¸ lb. (15.6 kg) of water an hour, into dry saturated steam
from and at 212 degrees F (100 degrees C).

Question of the Month for April 2012

What are the requirements for pressure vessels in Wisconsin?

Answer: Code requirements for Pressure Vessels
Comm 41.16 Initial inspections.


(1) BOILER AND PRESSURE VESSEL INSPECTIONS. (a) Except as provided in par. (b), boilers and pressure vessels shall be inspected by a certified inspector before they are placed in operation.
Note: See SPS 341.41 for installation registration requirements.
(b) The inspections specified in par. (a) are not required for boilers and pressure vessels exempted from periodic inspections in SPS 341.18.
(c) Where the boilers or pressure vessels specified in par. (a) are installed in a city of the first class and inspections are made by the city, the city shall keep a record of the inspections and shall submit a copy to the department.
(d) Where the inspections specified in par. (a) are performed by a certified inspector other than a department inspector, the certified inspector shall file an inspection report with the department and shall affix the Wisconsin registration number as required in SPS 341.36. The inspection report shall be filed with the department within 30 calendar days after completion of the boiler or pressure vessel installation. If the report is not filed within the 30−day period, the department shall perform the inspection.
SPS 341.18 Exemptions from periodic inspections.
(1) EXEMPTED EQUIPMENT. Except as provided in sub. (2), periodic inspections are not required for:
(a) Boilers or pressure vessels which receive regular inspections by United States government inspectors;
(b) Heating boilers located in private residences or in apartment buildings having less than three living units;
(c) Expansion tanks for hot water heating boilers;
(d) Boilers used exclusively for agricultural purposes;
(e) Pressure vessels having an inside diameter not exceeding 6 inches with no limit on pressure;
(f) Pressure vessels having a volume of less than 5 cubic feet and an operating pressure of less than 250 psig;
(g) Pressure vessels with a volume of less than 1−1/2 cubic feet with no limit on pressure;
(h) Pressure vessels having an internal or external operating pressure of not more than 15 psig with no limitations on size;
(i) Hot water supply boilers and water heaters, and hot water storage tanks in which the temperature does not exceed 210 F;
(j) Vessels used for the storage or processing of cold water, including those with air cushions;
(k) Pressure vessels which are used in accordance with the regulations of the United States department of transportation;
(L) Air receivers having a volume of less than 12 cubic feet and an operating pressure of less than 250 psig; and
(m) Pressure vessels used in processing and storing of fermented beverages at temperatures not exceeding 140 F.
(n) Any pressure vessel used as an integral part of an electrical circuit breaker.
(2) EXCEPTIONS. In individual cases, the boilers and pressure vessels exempted in sub. (1) shall be subject to inspection by or on order of the department upon the complaint of any person or upon the initiative of the department when there is reasonable cause to suspect that the construction, installation, maintenance or operation of the vessel is not in keeping with the general purpose and intent of this chapter.
Comm 41.28 Safety Rules.
(1) MAXIMUM ALLOWABLE WORKING PRESSURE. No boiler or pressure vessel may be operated at a pressure in excess of the maximum allowable working pressure stated on its current permit to operate.
(2) ALTERATION TO SAFETY DEVICES. No unauthorized person may remove or tamper with any connected safety device.
(3) INSTALLATION LOCATION. Boilers and pressure vessels shall be so installed that there will be sufficient room between the vessel and any ceiling, wall, partition or floor to facilitate the connection and operation of valves, pipes and other appurtenances, and shall be installed in a manner that will not block any inspection opening.
Comm 41.32 Pressure gages for air receivers.
(1) GAGE LOCATION. Air receivers shall be equipped with an indicating pressure gage so located as to be readily visible.
(2) GAGE DIAL. The dial of the pressure gage shall be graduated to approximately double the pressure at which the safety valve is set, but may not be less than one and one-half times that pressure.
Comm 41.37 Maintenance. (1) CORROSION PREVENTION. All boilers and pressure vessels shall be installed and maintained in such a manner as to prevent excessive corrosion and deterioration.
Comm 41.41 Installation registration.
(1) BOILER OR PRESSURE VESSEL INSTALLATION REGISTRATION. (a) Except as provided in par. (b), the installation of any boiler or pressure vessel shall be registered with the department by the installer before the operation of the boiler or pressure vessel. Registration shall be in writing on form SBD−6314.
Note: Copies of form SBD−6314 are available at no charge from the Safety and Buildings Division, P.O. Box 2509, Madison, WI 53701−2509, telephone 608/266−1818.
(b) Registration with the department is not required for:
1. Boilers and pressure vessels exempted from periodic inspections in SPS 341.18; and
2. Installations in cities of the first class if an installation registration form has been filed with the appropriate city official.
SPS 341.42 ASME code vessels. (1) ASME CODE COMPLIANCE. Except as provided in SPS 341.43, 441.44 and 441.45, boilers and pressure vessels shall be constructed and installed in accordance with the ASME code. Boilers and pressure vessels designed to other national or international standards may be approved if the design has been accepted by a nationally recognized independent third party.
Note: The department will recognize the applicable case interpretations of the ASME boiler and pressure vessel code as being acceptable.
Note: The ASME code specifies that persons installing boiler external piping by welding are required to possess the appropriate ASME credentials.
(2) REGISTERING WITH NATIONAL BOARD. (a) Except as provided in par. (b), boilers and pressure vessels constructed and installed in accordance with the ASME code shall have the manufacturer’s data report registered with the National Board and shall bear a National Board number. Copies of the registration shall be provided to the department when requested
From ASME Section VII Division 1
PRESSURE RELIEF DEVICES
UG−125 GENERAL
(a) All pressure vessels within the Scope of this Division, irrespective of size or pressure, shall be provided with pressure relief devices in accordance with the requirements of UG−125 through UG−137. It is the responsibility of the user to ensure that the required pressure relief devices are properly installed prior to initial operation.
UG−134 PRESSURE SETTING OF PRESSURE RELIEF DEVICES
(a) When a single pressure relief device is used, the set pressure marked on the device shall not exceed the maximum allowable working pressure of the vessel. When the required capacity is provided in more than one pressure relief device, only one pressure relief device need be set at or below the maximum allowable working pressure, and the additional pressure relief devices may be set to open at higher pressures but in no case at a pressure higher than 105% of the maximum allowable working pressure.

Question of the Month for March 2012

What are the requirements for ammonia refrigeration pressure relief replacement?

Answer: SPS 345.35 (3) states “reliefs shall be replaced in accordance with manufacturers’

recommendations but not to exceed five years from the date of installation.”

See SPS 345 PDF online.

Comm 45.35 (3) AMMONIA DISCHARGE. This is a department rule in addition to the requirements

in IMC section 1105.8: Pressure relief valves for ammonia systems shall be replaced in accordance with manufacturer’s recommendations but not to exceed five years from the date of installation. In lieu of the expiration date, a relief valve may be used for a total of five years if a record is maintained of when

it was installed and it was not over two years old at the time of installation.

Question of the Month for February 2012

Where can a company get boiler training/licensing for employees?

Answer: Wisconsin Technical Colleges can be contacted and for outreach boiler operator

training for plant personnel.

Other training and licensing organizations:
– American Society of Plant Engineers: www.asope.org
– National Institute Uniform Licensing of Plant Engineers: www.niulpe.org
– Training Online and Service Company … Combustion Safety Inc: www.combustionsafety.com

Question of the Month for January 2012

Can the owner of a power boiler request an extension of time past the Permit to

Operate due date for internal boiler inspection?

Answer: Yes, owners can request extensions of period between inspections up to 6 months,

with acceptance of the state-certified inspector.