The Challenge
Ongoing failures of tank top devices—specifically Pressure Vacuum Relief Valves (PVRVs) and Emergency Relief Valves (ERVs)—were repeatedly identified during tri‑annual Leak Detection and Repair (LDAR) inspections. These failures led to leaking tank vents, increased emissions exposure, and recurring maintenance and inspection findings.
The Solution
Spartan Controls conducted a comprehensive assessment of tank and flare protection equipment, system pressures, and overall tank performance. The team identified the undersized blanket gas regulator as a key contributor to vent failures and recommended its replacement to improve pressure stability.
Working in collaboration with tank OEM Elite Integrity Services, Spartan also supported the addition of multiple tank‑top nozzles to enhance blanket gas distribution. This redesign shifted the system from a single pressure‑control approach to a sweep gas configuration, improving blanket coverage and tank protection during dynamic operating conditions. A detailed report documented the findings, third‑party upgrades, and resulting performance improvements.
Working in collaboration with tank OEM Elite Integrity Services, Spartan also supported the addition of multiple tank‑top nozzles to enhance blanket gas distribution. This redesign shifted the system from a single pressure‑control approach to a sweep gas configuration, improving blanket coverage and tank protection during dynamic operating conditions. A detailed report documented the findings, third‑party upgrades, and resulting performance improvements.
The Value
Following implementation, the site achieved measurable operational and compliance benefits:
- Elimination of recurring tank vent leaks associated with PVRV/ERV failures
- Improved tank protection during maximum pump‑out events, reducing over‑ and under‑pressure risk
- Fewer LDAR findings, lowering the likelihood of regulatory penalties and re‑inspection costs
- Reduced maintenance intervention by stabilizing tank pressure and relief device performance