CASE SERIES|NUCLEAR POWER|COMPRESSORS · PISTON GROUP
ACTS OF THE ZAPORIZHZHIA NPP · AUGUST 1999 – MAY 2000
series of 2 acts
2VM4-27/9 compressors: output increased, plant extended the treatment
PRODUCTXADO RVSrepair-and-restoration compound by XADO LLC · treatment without disassembling the compressor
TEST OBJECT2VM4-27/9 air compressorspiston group of both cylinders and the crank mechanism
DOCUMENT TYPETwo plant acts
with signatures and stamps
with signatures and stamps
Key results
↑16%
output of compressor OUS30D01, filling of 20 m³ from 4 min 39 s → 4 min
↓19-40%
oil temperature in the crank mechanism system, 80 → 48-65 °C
| COMPRESSOR | TREATMENT | OBSERVATION | ACT |
|---|---|---|---|
| OUS30D01, OSK section | 03.08.1999 — piston group and crank mechanism | 264 h of operation in various modes, measurements before and after | 01.09.1999 |
| AKS and OSK compressors, including OUS30D01 | May 2000 — both sections | assessment of mechanism operation by the plant commission | 30.05.2000 |
Compressor OUS30D01 — 264 hours of operation after treatment
| PARAMETER | BEFORE TREATMENT | AFTER TREATMENT |
|---|---|---|
| Output — time to fill a 20 m³ air receiver from 0.2 to 8 kgf/cm² | 4 min 39 s | 4 min — output up by 16 % |
| Oil temperature in the crank mechanism system | 80 °C | 48-65 °C in various operating modes |
| Oil pressure in the crank mechanism lubrication system | dropped as the oil heated up | stabilized |
Oil temperature fell while the ambient air temperature was rising: the compressor has no oil cooling system.
Treatment of the plant compressor fleet, May 2000
| SECTION | TREATED COMPRESSORS |
|---|---|
| AKS | US71D01 · US72D01 · US76D01 · US77D01 · US79D01 |
| OSK | OUS10D01 · OUS20D01 · OUS30D01 · OUS40D01 · OUS50D01 · OUS70D01 |
The plant commission recorded a drop in temperature at the friction points with its subsequent stabilization, and restoration of output to the rated values.
Conclusions of the plant acts
Act of 01.09.1999 on compressor OUS30D01: «The compressor output was determined by an indirect method. The time to fill an air receiver of V=20 m3 from a pressure of 0.2 kgf/cm² to 8 kgf/cm² was 4 min 39 s before treatment with the technology and 4 min after treatment, i.e. an output increase of 16%». Over 264 hours of operation in various modes the oil temperature in the crank mechanism system fell from 80 °C to 48-65 °C and the oil pressure stabilized — and this with no oil cooling system, against a rising ambient air temperature. In May 2000 the plant treated the compressors of both sections, including the same unit OUS30D01, and the Zaporizhzhia NPP commission stated in the act of 30.05.2000: «The commission notes an overall improvement in the operating conditions of the compressor mechanisms after treatment with the XADO compound : a drop in temperature at the friction points and its stabilization, restoration of output to the rated values».
The results relate to 2VM4-27/9 air compressors at the compressor sections of the Zaporizhzhia NPP; with other machines and operating modes the figures may differ. The originals of both acts, with signatures and stamps, are published in full and available for download. RVS is an obsolete XADO designation for zero-generation compounds; the current product generation is revitalizants.
Current equivalent
- Revitalizant gel for compressors and bearingsCompressors · bearings · spindles
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
How such units are treated: