Munster bide time before breaking down Aberavon
The men in red made a bright start, putting the visitors under pressure in the early minutes, but the closest they came to a try was a cross-kick from Scott Deasy which was almost touched down by Cian Bohane after 10 minutes.
Bohane was denied by his opposite number, Richard Thomas, who rallied his teammates with an enterprising solo try just three minutes later.