11-13-2011 06:45 AM
I'm going through some clarifications from a customer on a bid. One of the clarifications raised is the difference between Caterpillar Vibrations Limit and ISO Whole Body Vibrations (WBV) 2631-1.
We're bidding for 3612 gensets. I've gone through the A&I Guide for the 3600 series, and I can find nothing about ISO standards or even whole body vibrations limits. There are limits regarding max vibration limits concerning the Genset itself, but nothing regarding the vibration limits for the operators nor any compliance with said ISO standard.
Can someone please advise asap, as I have to submit response for this by 15th November.
02-16-2012 02:51 AM
You are absolutely right. Caterpillar MUST provide these articles on net such as WARTSILA has done in their website. they actually posted their research article. CATERPILLAR atleast post max. vibration limits.
ISO 10816-6: Mechanical Vibration - Evaluation of Machine Vibration by Measurements on Non-Rotating Parts - Part 6: Reciprocating Machines with Power Ratings Above 100 kW First Edition
This part of ISO 10816 specifies the general conditions and procedures for the measurement and evaluation of vibration, using measurements made on the non-rotating and non-reciprocating parts of complete machines. Shaft vibration, including torsional vibration, is beyond the scope of this part of ISO 10816.
lt generally applies to reciprocating piston machines mounted either rigidly or resiliently with power ratings of above 100 kW. Typical examples of application are: marine propulsion engines, marine auxiliary engines, engines operating in diesel generator sets, gas compressors and engines for diesel locomotives.
The general evaluation criteria which are presented relate to both operational monitoring and acceptance testing. They are also used to ensure that the machine vibration does not adversely affect the equipment directly mounted on the machine.
Consideration should also be given to the machinery driven by or driving the reciprocating machine. These should be evaluated in accordance with relevant standards and classification for the intended duty.
lt is recognized that the evaluation criteria may only have limited application when considering the effects of internal machine components; for example, Problems associated with valves, loose pistons, piston rings, etc. are unlikely to be reflected in the measurements. Identification of such problems requires investigative techniques which are outside the scope of this part of ISO 10816. Noise is also outside the scope of this part of ISO 10816.
This part of ISO 10816 does not apply to machines installed in road vehicles (e.g. trucks, passenger cars, self-propelling construction machinery and tractors).
ISO 8528-9: Reciprocating Internal Combustion Engine Driven Alternating Current Generating Sets - Part 9: Measurement and Evaluation of Mechanical Vibrations First Edition