Guide to Power Piping in the State of Wisconsin SPS 341
Purpose
Many power piping projects are being completed within the state of Wisconsin that may require initial inspection and registration per SPS 341.16(2) and 341.41(2). Power piping constructed at one location and shipped to other destinations have been found questionable with improper welding, threading or material identification and have caused delays with construction timetables. Therefore, the intent of this memo is an attempt to assist and expedite the documentation, fabrication, installation, and inspection of In or Out of state pre-fab power piping.
Scope
This guide is provided for use by manufacturers, installing contractors (both within the State of Wisconsin, and out-of-state), and certified inspectors. This guide contains excerpts from the State of Wisconsin Administrative Code SPS 341, which are applicable to power piping and noted through reference to the Administrative Code paragraph and additional guidelines noted as "Additional Guideline" for compliance to ASME Code B31.1, 2010 edition as adopted in SPS341. 10(2)b.
SPS 341.04 Definitions applicable to Power Piping
(1) (b) "Alteration," for power piping means a change that involves an extension or addition to, or involves the arrangement, type or purpose of, an existing installation or component.
(4) "Authorized agent" means any of the following or their authorized representatives:
(a) A certified inspector who is referred to as enforcing this chapter, in a written contract between an inspection provider and the department.
(b) A first class city that has accepted the responsibility to administer and enforce this chapter (City of Milwaukee).
(7) "Certified Inspector" means a person who holds a valid credential issued by the department under ch. SPS 305 as a certified boiler pressure vessel inspector or a certified in-service field inspector.
Additional Guideline: Inspector: Means an Inspector of the Department or Authorized Agent, Certified Inspector, or a National Board Commissioned Inspector for out-of-state Manufacturers.
(9) "Department" means the Department of Safety and Professional Services.
(28) Power piping: means any steam piping system beyond the scope of section I of the ASME code and having a maximum allowable working pressure in excess of 15 psig, any hot water piping system beyond the scope of section I of the ASME code and subject to temperatures in excess of 250°F, or any piping system using an organic or synthetic fluid as a heat-transfer media and subject to temperatures in excess of 250°F,
(32) "Repair" means work and materials necessary to restore power piping to a safe operating condition.
SPS 341.16 Installation inspections (2)
POWER PIPING INSPECTIONS. (a) Except as provided in par. (b), all power piping systems not covered by ASME code section I and required to be constructed in accordance with ASME B31.1, shall receive an installation inspection by the department or authorized agent or a certified inspector. (b) The inspections specified in par. (a) are not required for any of the following:
1. Power piping of 2 inches nominal pipe size and smaller.
2. Power piping replacements, modifications and alterations to existing systems and for new installations, any of which do not exceed 50 feet in length.
3. Underground power piping systems that are not located in a walk-in tunnel.
Additional Guideline: The Manufacturer or Installing Contractor must comply with ASME
Code B31.1, even though registration and inspections are exempt for piping listed in SPS 341.16(2)(b) 1 through 3 above.
(c) The installer shall notify the department or authorized agent or a certified inspector prior to the start of construction of the power piping system so that inspections may be arranged. The department or authorized agent or certified inspector shall be given a minimum of 5 business days notice to arrange for inspection.
(d) A power piping inspection shall be made after the piping material is delivered to the job site and prior to the start of construction of the power piping system. The installer or an in-state shop fabricator shall complete Form SBD-5204-E, Registration for Power Piping and Welded Refrigeration Piping Installation, prior to the inspection, and the form shall be retained at the job site for reference during the inspection. The department or authorized agent or certified inspector shall indicate acceptance of the power piping system design and installation by signing Form SBD-5204-E. Power piping systems may not be insulated or placed in service without receiving that acceptance.
(e) Prefabricated piping that is part of a power piping system shall be inspected at the fabrication shop by the department or authorized agent or a certified inspector or an active National Board commissioned inspector for out-of-state manufacturers. The shop fabricator shall provide a copy of the certified inspector's report or a copy of the completed DSPS Form SBD-5204-E to the installer at the job site verifying that the prefabricated piping complies with ASME B31.1. The owner or installer shall provide design calculations for the prefabricated piping if requested by an inspector.
Note: Certified inspectors may conduct whatever number of inspections are needed in addition to the inspections required in this section, to verify compliance with this chapter. Also, owners or users may request additional inspections beyond the number established by the certified inspector.
Additional Guideline: SPS 341.16, paragraphs address the need for inspection by an Inspector.
The inspector, to the best of their knowledge, must verify the manufacturer and or installing contractors are following ASME Code B31.1, which depending on the scope of work may include but is not limited to the following:
Verify calculations are available. Calculations shall be provided by the owner, shop fabricator, or by the installing contractor.
Review of drawings which have been approved by the manufacturer or installing contractor as applicable, for the scope of work being performed.
Examination of materials for proper marking, including review of material test reports and certificates of conformance, when required by ASME Code B31.1.
Perform inspections during fabrication as determined by assignment of hold points by the inspector, or In-process inspections as agreed to by the manufacturer or installing contractor and the inspector.
Review of Welding Procedures and Welding Procedure Qualification Records.
Review of welder / welding operator qualification records, including performance continuity records.
Review of any required nondestructive examination procedures.
Review of nondestructive examination personnel qualification records, including written practice if applicable.
Review of any required nondestructive examination reports, including radiographic film.
Review of post weld heat procedure.
Review of post weld heat treatment records.
Final weld inspection.
Witness of the final pressure test.
SPS 341.46(1) Power piping
GENERAL. Power piping shall be installed in accordance with ASME B3 l. l. The use of slip-on flanges shall be limited in applications to no higher than Class 300 primary pressure service rating. Slip-on flanges shall be installed with double fillet welds in accordance with ASME B31.l.
SPS 341.41 Installation registration (2)
POWER PIPING INSTALLATION REGISTRATION
(a) Except as provided in par. (b), the installation of any power piping system shall be registered with the department by the installer before the operation of the piping system. Registration shall be on form SBD-5204-E.
(b) Registration is not required for any of the following:
1. Power piping of 2 inches nominal pipe size and smaller.
2. Installations in cities of the first class if an installation registration form has been filed with the appropriate city official.
3. Underground power piping systems that are not located in a walk-in tunnel.
4. Power piping replacements, modifications and alterations to existing systems and for new installations, any of which do not exceed 50 feet in length.
5. Installations at one- or 2-family dwellings.
Note: Section SPS 34 1.16 (2) (c) requires the piping installer to notify the Department or authorized agent or a certified inspector at least 5 business days prior to the installation to schedule an inspection.
Additional Guideline: Additional guidance for completion of Power Piping Registration
Form(s) SBD-5204-E is provided as follows:
Power Piping Registration Form(s) shall be presented to the Inspector during the initial visit to the Manufacturer's facility or Installing Contractors field site location. The Inspector shall note initial review of the fo1m(s) by initials and date, which will be maintained by the Manufacturer or Installing Contractor until work has been completed.
Upon satisfaction of work, the Inspector shall note final acceptance by completion of the Certified Inspector Blocks on the form(s), with; signature, employed by, date inspected, and State/ National Board Identification NumberFor large Projects involving one or more Manufacturers of Prefabricated piping, and one or more Installing Contractors;
Each Manufacturer shall complete one or more Power Piping Registration Form(s), and provide to the Installing Contractor for piping sent to the field location for installation.
The Installing Contractor(s) shall complete one or more Power Piping Registration Form(s) for the field installation, and attach the appropriate Power Piping Form(s) furnished by the Manufacturers of Prefabricated piping.
For Projects where the Manufacturer is also the Installing Contractor;
One or more Power Piping Registration Form(s) may be used for both the shop fabrication and field installation, when the Inspector is the same for both the shop and field activities.
Separate Power Piping Form(s) shall be used for the shop activities, vs. the field activities, when the Inspector(s) are not the same individual.