The phrase "a spate of failures" is correct and usable in written English.
It can be used to describe a sudden or large number of failures occurring within a specific timeframe or context.
Example: "The company experienced a spate of failures in its new product line, leading to significant financial losses."
Alternatives: "a series of failures" or "a wave of failures".
Last summer a spate of failures kicked the default rate for U.S. speculative-grade (i.e., junk) bond issuers up to its highest level since the 1991 recession.
In related news, the Guardian reports that Facebook has delayed a requirement that UK political advertisers verify their identity — pushing it back from an initial deadline of today to sometime in "the next month", with the company saying it wants to take more time to strengthen the system after a spate of failures.
And Republicans, eager to show they can govern effectively after a spate of failures, have every reason to try to pass a new budget rather than another stopgap for the rest of 2017.
Those failures were similar to the basic mechanical breakdowns, electrical shorts and software flaws that led to a spate of recent failures in launchings of commercial booster rockets for lifting satellites into space and in the test program for Thaad, which is a less ambitious antimissile system that is meant to protect troops.
Pirelli found themselves under the spotlight when a spate of tyre failures blighted the British Grand Prix at Silverstone which led to a change in tyre construction for the second half of the season.
The shake-out has not only heaped pain on those working in the industry, with heavy job losses, but on holidaymakers as well, with a spate of company failures including this summer's collapse of Sun4U and Goldtrail Travel, which resulted in tens of thousands of travellers being stranded abroad.
Following a spate of seal failures, the industrial group Trelleborg came to the rescue.
Now many of them, having been alarmed by a spate of banking failures and scandals, are looking for safe places to invest their money.
So should people be worried about what seems to be a spate of credit union failures?
Last year, at Silverstone, Hamilton claimed pole position for Mercedes by half a second, but after opening up a clear lead in the race, he was one of the first to suffer from a spate of spectacular tyre failures.
Nor has VW been scoring high in quality rankings, including Consumer Reports', and the company angered customers last year with its delayed and seemingly disorganized response to a spate of ignition coil failures.
