Neil, check it every three months in accordance with the HSE guidlines (DVIS9) if your pump is maintained correctly.
Maintain less than 35mg/m3.
Quote: (Originally Posted by
Genesis)

And no, checking once in a while is NOT good enough. You need continuous monitoring - when the 20% indicator just starts to turn your dessicant (molecular sieve) is shot and within minutes you will have oil vapor in the product gas.
Yeah, right O. You have fun with that one then.
