Thanks cdafd,
The link is really interesting.
However, I was rather thinking on the line of a simple/standard air starting motor installed on this diesel engine (in lieu of electric motor starter), using compressed air from an air receiver. The NFPA 20 cranking requirement are so high, that a normal air receiver for this duty would be the size of a large submarine. However, compressing the air to 2500 - 3000 psi, the required air can be squeezed in 5-6 off 'G size' cylinders (like autogen welders cylinders).
The NFPA 20 recommends the diesel engine to be fitted with a compressor, to replenish independently of other air sources, the supply of air in the high pressure air cylinders. So I am looking for a high pressure compressor installed as an auxiliary compressor on the Fire Water Pump's Diesel Engine. I was so far unable to locate a such compressor, particularly of this high pressure output. It might not even exist. My last hope is that someone has heard of it or knows someone who might have heard something...
Cheers,
gr2vessels