The phrase "whenever a need arises" is correct and can be used in written English.
You can use this phrase when you want to suggest that something will take place when it is necessary. For example, "Our team is available to provide assistance whenever a need arises."
This casts serious doubts on the feasibility and extent of strengthening by placing external reinforcement in the web, whenever such a need arises.
A first approach is to gradually improve the existing communication stacks, replacing one function at a time, whenever the need arises.
No matter how you deal with those chaotic moments in your life, create a serenity trigger that will help you find a peaceful place whenever the need arises.
There is need to un-package the general policy development and management guidelines into specific activities with timelines whenever the need arises to develop/revise a policy at the MoH.
That is, now that most of us are at least familiar with streaming, on-demand music from pick-your-service (Imeem, Pandora, Spotify, Rhapsody, etc)., will people in the future still see music as a "thing" that they'll own, or more like a service that they'll tap into whenever the need arises?
And, also, whenever the need arises, the Republic of Korea, the government will continue to closely consult with the U.S. government.
In an attempt to quell this anxiety, Better Place has designed software that effectively does the thinking on behalf of the customer — providing directions to the nearest recharge location whenever the need arises.
It is hard to imagine many of the essential precepts of the modern game: pressing, the understanding of space as the game's crucial element, the positional flexibility that enables attackers to defend and defenders to attack whenever the need arises.
This network resource also grants you access to tap into them whenever the need arises.
The panel of cyclone experts meets every year, and they will be replenishing the list whenever the need arises.
