rb bertomeu, S.L.

Pol. Ind. Fondo de Llitera, Par. 82-83

E-22520 Fraga, Huesca (Spain)

Tel.:  +34 974 47 48 04 

+34 630 43 08 43

www.rbbertomeu.es

rbbertomeu@rbbertomeu.es

 

TECHNICAL BULLETIN

n. 16    

EXHAUST VALVES IN LARGE ENGINES OPERATED WITH HEAVY FUEL OIL.
DOUBLING THE TBO FOR GENERAL OVERHAULS
(TBO = Time Between Overhauls)

Deutz Iberia set the objective of confirming whether it was feasible in practice to double the TBO for overhauls on exhaust valves in large engines operated with heavy fuel oil by applying the additive treatment "rb bertomeu" beco F1/ASF to the fuel, in order to reduce corrosion at high temperatures.To this end, Deutz Iberia proposed carrying out a monitoring programme over an extended period on one of the BV 16M 640 (6590 kW) engines installed in the cogeneration plant at EnergyWorks Carballo (EWCAR), formerly Calvo Energía, one of the plants successfully using the already mentioned additive for heavy fuel oil “rb bertomeu” beco F1/ASF.

The monitoring programme was begun after the overhaul at 15,800 hours, and successfully completed at 21,900 hours.This meant that a TBO of 6,100 hours had been reached, and the usual TBO of 3,000 hours for this type of engines had been doubled, even though the exhaust valves installed were reconditioned and had undergone up to three rectifications.

Two intermediate inspections were performed on two of the valves, in order to monitor their condition; the first took place on reaching a TBO of 155 %, the second on reaching a TBO of 177 %, where both percentages refer to a normal TBO of 3,000 hours.

The final overhaul on all the exhaust valves of the engine (32 in total), on reaching a TBO of 200 % (doubling the normal TBO), was performed jointly between EWCAR (See Letters of Reference), Deutz Iberia, Deutz A.G. and rb bertomeu S.L. This is a subject of especial interest, as it means a significant reduction in maintenance costs, as well as increased annual energy production in direct proportion to the reduction in downtime.

 The result of the monitoring programme far exceeds the results of previous testing programmes carried out in other cogeneration plants, which verified increases in the TBO of 50 % (reaching 150 % of the usual TBO).

For further information on this subject, consult the following documents compiled by rb bertomeu (by clicking on the chosen title):

 

 

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