The phrase "a source of ignition" is correct and usable in written English.
It can be used in contexts related to fire safety, engineering, or discussions about potential fire hazards.
Example: "Ensure that there is no flammable material near a source of ignition to prevent accidents."
Alternatives: "an ignition source" or "a fire starter".
As a result, when there is a source of ignition, whether a burning letter or a lightning strike, fires spring up explosively.
The right mix of fuel vapors, air and heat creates a bomb-like condition that needs only a source of ignition to blow up.
In fact, the tanks cannot explode: for that, oxygen would need to mix with the methane inside and have a source of ignition.
Canadian investigators looking into the deadly crash of Swissair 111 in 1998 say a pilot's map light, built into the cockpit ceiling of the MD-11, may be a source of ignition in that model airplane.
The present investigation compares the performance and emission characteristics of a DI diesel engine with gaseous hydrogen as a fuel inducted by means of carburation technique and timed port injection technique (TPI) along with diesel as a source of ignition [Swain N, Design and testing of dedicated hydrogen-fueled engine. SAE 961077, 1996].
Of course, climate change is the sort of insidious threat that can't be held definitively responsible, but things like warmer springs and summers, which allow peat and forest landscapes to dry out, coupled with an increase in storms, which provide a source of ignition, make it a prime suspect.
I'd always wanted to know how Mickey crafted cigarettes without tobacco, papers, filters, or even any source of ignition, so I asked him to show me.
Moreover, cone-shaped damps of coal tailing can potentially be a source of self-ignition and possible explosion (Siboni et al. 2004; Adiansyah et al. 2017).
Thirty years on, I have seen a fire report submitted by the Timber Research and Development Association, the one independent body to carry out an inspection of Valley Parade's main stand before the tragedy, that concluded it was "extremely unlikely that a small source of ignition on its own, say a cigarette in a plastic cup, could have been the primary cause".
A recent murder enquiry prompted experimentation to confirm and visually demonstrate that lit cigarettes are not a viable source of ignition of petrol vapour.
Similar experiments including an external source of ignition (spark/water reacting with NaAlH4) yield a flame of reacting powder.
