All PEI Standards

RP1200 — Leak Detection Testing (2024 ed.)

A plain-language orientation to the testing and verification of UST release-detection and containment equipment

What This Topic Covers
  • The general subject of confirming that release-detection and containment equipment still functions
  • LLD (line leak detector): a pressure-sensing device on pressurized piping that signals if a line is leaking
  • Spill bucket: a fill-pipe catchment whose integrity is among the items verified during periodic testing
  • Equipment categories commonly tested: automatic tank gauges (ATG), line leak detectors (LLD), interstitial monitoring, spill buckets, and overfill devices
  • How this area relates to — but does not replace — federal and state UST requirements
Why It Matters
  • Leak-detection equipment only protects you if it actually works
  • Periodic testing catches failed sensors and devices before a release goes undetected
  • Testing documentation is a common requirement during compliance inspections
Who Uses It
  • Owners and operators scheduling equipment testing
  • Qualified testing contractors performing verifications
  • Inspectors and compliance staff reviewing test results
Regulatory Context
  • Federal UST rules at 40 CFR Part 280 require periodic testing of release-detection and containment equipment
  • Many states set their own intervals, and some require annual testing of certain equipment
  • Industry recommended practices offer guidance on how testing is carried out
Get the Full Standard
  • The complete Recommended Practice is published by PEI
  • It is a copyrighted document available for purchase
  • USTex Guide is independent and does not redistribute its contents
USTex Guide is an independent educational resource. It is not affiliated with, authored by, or endorsed by the Petroleum Equipment Institute (PEI). This page is an original plain-language overview for educational purposes only and does not reproduce the text, tables, figures, or procedures of any PEI Recommended Practice. PEI Recommended Practices are copyrighted works available for purchase at pei.org. Always consult the current published standard and your state regulator for specific compliance requirements.

Related Standards

RP300 — Vapor Recovery Systems (2024 ed.)RP400 — Hanging Hardware Continuity (2023 ed.)RP900 — Inspection & Maintenance (2021 ed.)

State Compliance Requirements

Requirements vary by state. See state-specific UST compliance details:

Texas Florida California

Purchase the full Recommended Practice from the Petroleum Equipment Institute at pei.org .