A Legacy Under Pressure
355 pressure vessels. Decades of use. One urgent need: long-term safety.
Since its founding in 1956, JSC Rustavi Azot has powered the Caucasus region’s chemical industry — producing ammonium nitrate, sodium cyanide, and ammonia at industrial scale. But by 2023, many of the plant’s 355 high-pressure vessels, operating at over 0.5 bar, had far surpassed their design life.
The stakes?
- Operational breakdowns
- Environmental risk
- Non-compliance with Georgia’s Resolution No. 410
They needed a partner with deep technical insight, regulatory know-how, and a precise engineering mindset.
They turned to NWEgroup.
The Challenge: Aging Infrastructure, Escalating Risk
Pressure vessels beyond design life — risk mitigation without disrupting operations.
These vessels — some dating back to 1966 — were critical to Rustavi Azot’s ammonia (230 KTPA), nitrate (550 KTPA), and cyanide (15 KTPA) production. But age, corrosion, and continuous high-pressure operation had taken their toll. Failure to act meant risk of catastrophic breakdown, not to mention severe regulatory penalties.
The challenge wasn’t just inspection.
It was finding a cost-effective path to extend life — without disrupting production.
Our Response: Engineering Precision Meets Regulatory Mastery
API 510. API 579. ASME FFS-1. Our blueprint for industrial safety success.
NWE mobilized a multidisciplinary team to deliver a Fitness-for-Service (FFS) and Residual Life Assessment (RLA) program tailored to one goal: keep Rustavi Azot operating — safely and sustainably.
In collaboration with MAG-Pi Ltd and plant engineers, we executed:
- Corrosion & Damage Assessment
Using advanced NDT techniques, we quantified internal/external corrosion, erosion, and structural wear. - Residual Life Calculations
Factoring material degradation, stress history, and usage data, we projected the realistic remaining life for each vessel. - Fitness-for-Service Validation
We determined which components, though aged, were still safe — eliminating unnecessary replacements. - Minimum Thickness Evaluations
Each vessel was benchmarked against API 579 / ASME FFS-1 thresholds. - Repair & Risk Strategy
From minor refurbishments to full retrofits — we delivered actionable repair recommendations and maintenance plans.
The Result: Safety Reinforced, Production Uninterrupted
Millions saved. 355 reports delivered. 321 certifications secured.
The outcome speaks volumes:
- ✅ 355 inspection reports delivered
- ✅ 321 official endorsements issued
- ✅ No production halts, no compliance violations
- ✅ Capital expenditure slashed by avoiding premature vessel replacements
- ✅ Operational life extended by 5–10 years
We didn’t just inspect.
We engineered a solution that saved millions.
Standards We Adhered To
Built on global codes. Validated by proven engineering.
- API 510 – Pressure Vessel Inspection Code
- API 579-1 / ASME FFS-1 – Fitness for Service
- API 570, 571, 581 – Risk-Based Inspection & Corrosion Analysis
- Resolution No. 410 – Georgian Safety Law (2013)
What This Means for Industry Leaders
Turning aging infrastructure into strategic assets — with engineering foresight.
Rustavi Azot’s transformation is a textbook example of how aging infrastructure can be turned into a competitive advantage — with the right engineering partner.
Where others see “end-of-life,” we engineer what’s next.
Ready to Reinforce Your Industrial Legacy?
Extend operational life. Ensure compliance. Secure your future.
Contact NWE today to explore how our Fitness-for-Service and Life Extension programs can safeguard your operations — and your bottom line.
📩 Let’s Talk → Contact us
📞 +47-40221100
