PSC M1MB

Overview

The Product Service Code (PSC) system is the government-wide taxonomy used to classify goods and services procured by the U.S. federal government; PSC entries populate FPDS/SAM contract records and support reporting, analysis, and spend-management activities. The PSC Manual on Acquisition.gov describes PSCs and the maintenance process, and it is the canonical source for PSC descriptors and usage guidance. The PSC M1MB is listed under Category M1 with the short descriptor "Operation of EPG Facilities - Gas," and the manual presents that descriptor as the canonical label for reporting contract actions where operation of gas EPG facilities is the predominant deliverable. ¹

What this PSC covers

• Operation of EPG Facilities - Gas — core descriptor as published in the PSC Manual. ¹
• Facility operations and management — Not specified by official sources. ¹
• Monitoring and control of generation systems — Not specified by official sources. ¹
• Fuel handling and supply activities specific to gas facilities — Not specified by official sources. ¹
• Operator staffing and routine site services for gas-fired generation facilities — Not specified by official sources. ¹

Related NAICS and PSC codes

Type | Code | Descriptor

• | - | - PSC | M1MA | Operation of EPG Facilities - Coal PSC | M1MD | Operation of EPG Facilities - Hydro PSC | M1MF | Operation of EPG Facilities - Petroleum

Source: PSC Manual. ¹

When to use this PSC

• Use when the predominant deliverable reported in FPDS is the operation (rather than construction, maintenance, or purchase) of gas EPG facilities; the PSC Manual directs selection of the PSC that represents the predominant product or service in the contract action. ¹

Overlap with construction/maintenance codes

• The PSC Manual organizes operation, construction, lease/rental, maintenance, and repair codes into parallel code families (for example, Y1MB for construction of EPG Facilities - Gas and Z1MB for maintenance of EPG Facilities - Gas), indicating separate PSCs exist for construction and maintenance versus operation and supporting the choice of the operation code only when operation is the primary requirement. ¹

Frequently asked questions

• Q: What specifically does M1MB cover?
  A: The PSC Manual lists M1MB as "Operation of EPG Facilities - Gas" and records it as the code to use when the predominant acquisition is operation of gas EPG facilities. The manual does not provide a detailed, itemized list of included tasks. ¹

• Q: How should M1MB be reported in FPDS?
  A: FPDS data element 8A ("Product or Service Code") should reflect the PSC that represents the predominant product or service for the contract action; agencies should select M1MB when operation of gas EPG facilities is the dominant deliverable. ¹

• Q: Are there dedicated PSCs for construction or maintenance of gas EPG facilities?
  A: Yes. The PSC Manual includes parallel families such as Y1MB for construction and Z1MB for maintenance of gas EPG facilities; these are separate from operation codes and should be used where construction or maintenance is primary. ¹

• Q: Is there a NAICS mapping for M1MB?
  A: The PSC Manual references supporting spreadsheets and alignment tables for category management and mapping, but a direct NAICS-to-PSC mapping for M1MB is not provided on the manual pages themselves; mapping is available in accompanying PSC spreadsheets and tools. Not specified on the manual pages. ¹

Useful resources

• PSC M1MB — G2X
• PSC Manual (Product and Service Codes Manual, April 2025 PDF). ¹
• Product Service Code (PSC) Tool (GSA) — psctool.us. ²

References

1. Acquisition.gov — Product and Service Code Manual (PSC Manual, April 2025 PDF). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
2. Product Service Code Selection Tool (GSA) — psctool.us. https://psctool.us/