Practices by Discipline
PIP produces broadly applicable code-compliant practices.
Browse PIP Practices
Design and Fabrication of Metal-Enclosed Nonsegregated-Phase Bus Duct Assemblies
This Practice describes requirements for design, fabrication, inspection, and testing of metal-enclosed, self-cooled, nonsegregated-phase bus duct assemblies for use on systems operating through 38 kV, and suitable for indoor and outdoor applications. This practice does not cover the requirements for solid dielectric (sandwich) type constructed bus duct.
Complete Revision
Guidelines for Use of Insulation Practices
This Practice provides guidance to engineers for the application of the PIP insulation Practices. This Practice describes how to use PIP insulation Practices and supporting documentation for the execution of a project. A general description of each Practice is provided. Instructions are provided for the use of the associated data forms.
Complete Revision
Design & Fabrication of Low Resistance Neutral Grounding Resistor for 2.4 to 15 kV Systems
This Practice describes the requirements for a grounding resistor assembly to be used in a 2.4 to 15 kV low resistance grounding system with a neutral available.
Complete Revision
Insulation Design Guide
This Practice provides guidance for the design of insulation systems. It describes the types of insulation systems that are indicated by the type code on the Piping and Instrumentation Diagrams (P&IDs), data sheets, and other design documents. This Practice provides guidance on insulation design criteria, insulation materials, extent of insulation, determination of insulation thickness, and insulation material properties.
Technical Revision
Pipe Weld Data Sheet (PWDS) Instructions (Universally Applicable)
The purpose of this Practice is to provide guidance for completion of Pipe Weld Data Sheets, referred hereinafter as PWDSs. The basis for completion of the PWDSs is provided in the design specification documents and applicable construction code. This guidance document is primarily developed for use with ASME B31.3 piping fabrication. Although piping systems designed in accordance with other piping codes are not the primary focus of this Practice, it may be used for piping fabricated to other codes, including ASME B31.1, ASME B31.4, ASME B31.8, or other codes as applicable. The PWDS covers basic weld and quality control requirements for pressure retaining materials and attachment welds to pressure retaining materials. Other welding requirements are outside the scope of this Practice. A PWDS should be developed for engineering, procurement, construction or design-build (EPC) or design-build type of projects where either the owner or the owner’s engineer is responsible for the procurement and/or construction of shop or field fabricated pipe. Development and completion of PWDSs for projects should be undertaken for consistent quality control throughout construction and to provide a basis for inspection and construction cost basis to minimize fabricator or constructor interpretation of code and/or owner expectations. PWDS development is a necessary engineering activity for support of procurement and construction activities for fabricated pipe of any kind. A PWDS should be developed before construction and bidding activities where spool fabrication, field construction, or fabrication of equipment skid piping is required. The Pipe Weld Datasheet can be adapted to other fabrication activities where specific quality control requirements are necessary to provide an acceptable level of inspection or fabrication requirements.
New Practice
Dry Type Power Transformers
This Practice contains the minimum requirements for design, manufacture, inspection, testing, and shipping of air-cooled dry type power transformers rated 750 kVA and above with primary voltage ratings less than or equal to 34.5kV.
Complete Revision