Practices by Discipline

PIP produces broadly applicable code-compliant practices.

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Review the most up-to-date collection of PIP Practices. Most recently published practices are listed first. Search key terms or filter by discipline to narrow the list.

Found 606 Results

Mechanical

RESP004

Liquid Ring Vacuum Pumps and Compressors Specification

Abstract ↓

This Practice provides the requirements for liquid ring vacuum (LRV) pumps and compressors, drivers, and associated equipment.

This Practice describes the standard arrangement for liquid ring vacuum pumps and compressors and systems employing liquid ring machines. This Practice provides a framework for specifying a skid- mounted liquid ring machines system, “package,” for systems with drivers less than or equal to 150 kW (200 hp). This Practice can be applied to simple once-through arrangements, partial recirculation, and total recirculation systems.

Comment: This Practice can be used in conjunction with API 681.

A liquid ring machine data sheet, RESP004-DM/D, is included with this Practice. This data sheet may be used to communicate purchaser requirements; however, supplemental information may be necessary to fully define process requirements.

Vendor websites provide excellent visualizations of how LRV machines operate.

April 2026
Technical Revision

Piping

PLC00002

Abbreviated Pipeline Terms and Acronyms (Universally Applicable)

Abstract ↓

This Practice provides a system for engineers to identify abbreviated pipeline terms and acronyms used in PIP Pipeline Systems Practices. This Practice establishes the definitions and interpretations for all pipeline-related abbreviations and acronyms used in Pipeline Systems Practices.

March 2026
Technical Revision

I/E

PCETE001

Temperature Measurement Guideline

Abstract ↓

Practice provides engineering guidelines for the selection and application of temperature measurement instrumentation. This Practice describes the requirements for selecting thermocouples, resistance temperature detectors, thermowells, thermistors, pyrometers, filled thermal systems, bimetallic thermometers, temperature transmitters, and receiver devices.

March 2026
Technical Revision

Piping

PNSMV056

Nickel and Nickel Alloy Ball Valve Descriptions

Abstract ↓

This Practice provides detailed purchase descriptions for nickel and nickel alloy ball valve tag numbers included in PIP Piping Material Specifications (PMSs) and used along with PIP PNSM0110 and the purchase order for the procurement of valves. This Practice also provides a cross reference for nickel and nickel alloy ball valve tag numbers to applicable PIP PMSs.

March 2026
Technical Correction

Piping

PNSMV015

Low and Intermediate Alloy Steel Check Valve Descriptions

Abstract ↓

This Practice provides detailed purchase descriptions for alloy steel check valve tag numbers included in PIP Piping Material Specifications (PMSs) and used along with PIP PNSM0110 and the purchase order for the procurement of valves. This Practice also provides a cross reference for alloy steel check valve tag numbers to applicable PIP PMSs.

March 2026
Technical Correction

I/E

PCERE001

Rotating Equipment Monitoring Guideline

Abstract ↓

This Practice provides guidance for the application of instrumentation to monitor rotating equipment for machinery protection, enhanced performance, and predictive maintenance. This Practice describes the following:

a. Typical applications for continuous on-line monitoring of rotating equipment

b. Types of monitoring that could be provided and where they are typically applied

c. Installation considerations specific to type of monitoring equipment

d. General calibration and functional checkout considerations

e. Documentation recommendations

Types of rotating equipment covered in this Practice include centrifugal compressors, centrifugal pumps, gears, steam turbines, gas turbines, electric motors and generators, and other shaft driven equipment. This Practice does not cover the design of anti-surge controllers, performance controllers, seal gas systems, and other equipment auxiliary systems. For information on surge detection and anti-surge control, refer to API 670.

March 2026
Technical Revision

I/E

PCIFL100

Orifice Plate Installation Details

Abstract ↓

This Practice provides installation details and describes the minimum requirements for installing orifice plates in gas, liquid, steam, or condensing vapors service.

March 2026
Reaffirmation

I/E

PCIGN200

General Instrument Purge Details

Abstract ↓

This Practice contains installation details for adding single or dual purge supply systems that supply purge fluid through tubing, transmitter body, or orifice unions to a pressure or differential pressure transmitter. Instrument accessory details are shown in PIP PCIGN300 - General Instrument Accessory Details.

March 2026
Technical Revision

I/E

PCSCP001

Control Panels Specification

Abstract ↓

This Practice describes the requirements for the design, fabrication, assembly, inspection and testing, and shipment of custom steel instrument control panels. There are occasional cases where other material may be required. This does not cover fabrication using alternate materials.

March 2026
Technical Revision

I/E

PCFGN000

Instrument Pipe Support Fabrication Details

Abstract ↓

This Practice provides fabrication details and describes the minimum requirement for fabricating galvanized pipe supports in instruments for various mounting arrangements.

March 2026
Technical Revision

Piping

PNSMV029

Stainless Steel Other Valve Descriptions

Abstract ↓

This Practice provides detailed purchase descriptions for Stainless Steel valve tag numbers (other than gate, globe, check, ball, butterfly, and plug valves) included in PIP Piping Material Specifications (PMSs) and used along with PIP PNSM0110 and the purchase order for the procurement of valves. This Practice also provides a cross reference for Stainless Steel valve tag numbers to applicable PIP PMSs.

March 2026
Technical Correction

I/E

ELSSG14

High-Voltage Substation Circuit Breakers 15.5kV to 245kV

Abstract ↓

This Practice establishes requirements for engineering, fabrication, assembly, and testing of high-voltage dead tank, air-insulated vacuum, SF₆, or mixed-gas outdoor circuit breakers rated voltage class 15.5 kV to 245 kV (nominal kV class 14.4 to 230).

February 2026
New Practice

Mechanical

VESSP002

Supplemental Design and Fabrication Specification for Shell and Plate Heat Exchangers ASME Code Section VIII, Divisions 1 and 2

Abstract ↓

This Practice describes the mechanical design, fabrication, examination, inspection, testing, and documentation requirements for shell and plate heat exchangers constructed in accordance with ASME Boiler and Pressure Vessel Code, Section VIII, Division 1 or Division 2, henceforth referred to as the Code. Requirements that are specific to Code, Section VIII, Division 2 are shown in braces { }.

This Practice is supplemental to the requirements of PIP VESV1002, Design and Fabrication Specification for Pressure Vessels, ASME Code Section VIII Divisions 1 and 2.

February 2026
Reaffirmation

Mechanical

VECSP001

Supplemental Design Criteria and Purchasing Requirements for Shell and Plate Heat Exchangers ASME Code Section VIII, Divisions 1 and 2 (Universally Applicable)

Abstract ↓

This Practice provides requirements for use by a purchaser for determining the design criteria including design, materials of construction, inspection and testing for shell and plate heat exchangers constructed in accordance with ASME Boiler and Pressure Vessel Code, Section VIII, Division 1 or Division 2, henceforth referred to as the Code, and PIP VECV1001. Requirements that are specific to Code, Section VIII, Division 2 are shown in braces { }. This Practice provides requirements for purchasing shell and plate heat exchangers that are to be designed and fabricated by a manufacturer. This Practice also provides guidance for the development of purchase specifications for the construction of new shell and plate heat exchangers that meet the philosophy and requirements of Code, Section VIII, Division 1 {or 2} and PIP VECV1001.

For some heat exchanger purchases, certain requirements in this Practice and in PIP VECV1001 may be assigned by the purchaser to the manufacturer. The specific requirements assigned (e.g., thermal design and the performance rating) can be specified on purchaser’s PIP VEDSP003 Data Sheet.

February 2026
Reaffirmation

Mechanical

VEDSP003

Documentation Requirements for Shell and Plate Heat Exchangers ASME Code Section VIII, Divisions 1 and 2

Abstract ↓

This Practice provides data forms and the associated instructions for specifying

requirements for shell and plate heat exchangers constructed in accordance with ASME

Boiler and Pressure Vessel Code, Section VIII, Division 1 or Division 2. Requirements

that are specific to Code, Section VIII, Division 2 are shown in braces { }.

This Practice contains four data forms for providing requirements for shell and plate heat

exchangers having internal design pressures equal to or greater than 103 kPa (15 psig)

and/or full vacuum external pressure at the top of the exchanger in its normal operating

position, and are welded, shop- and field-fabricated, and in accordance with the

requirements of the Code, Section VIII, Division 1 {or Division 2}.

This Practice is required to be used with PIP VECV1001, PIP VESV1002,

PIP VECSP001, and PIP VESSP002 to specify requirements that are required by

manufacturer to design and fabricate a shell and plate heat exchanger.

February 2026
Reaffirmation

Piping

PNSMV014

Low and Intermediate Alloy Steel Globe Valves

Abstract ↓

This Practice provides the detailed purchase descriptions for intermediate alloy steel globe valve tag numbers included in PIP Piping Material Specifications (PMSs) and used along with PIP PNSM0110 for the procurement of valves. This Practice also provides a cross reference for intermediate alloy steel globe valve tag numbers to applicable PIP PMSs.