Four second half tries earned Swansea a bonus point, but it wasn't enough to stop Munster making it four out of four in Pool A of the Celtic League.
Even without the services of their Irish outside half Ronan O'Gara, Munster had an ace goalkicker in their side in full back Jeremy Staunton.
He kicked the home side into a 12-3 lead with four penalties in response to Arwel Thomas' second minute drop goal. A try from wing Mossie Lawlor, converted by Staunton, gave the home side a 19-3 interval lead
Things got worse for Swansea early in the second half when Dominic Crotty intercepted on his own 22 and raced the length of the field to score
The full back was at it again after 51 minutes when he grabbed a second try. This time Staunton converted and Munster were 28 points ahead and seemingly out of sight at 31-3.
Thomas and Steve Winn mountd a fightbackwith tries that cut the deficit to 16 points, but a try from scrum half Mike Predergast re-established the Munster hold on proceedings.
There was at least a strong finish from the Whites as Colin Charvis and Gavin Henson grabbed tries to earn a bonus point.
Scorers: Munster: Tries: D Crotty 2, M Lawlor, M Prendergast; Cons: J Staunton 3; Pens: J Staunton 4. Swansea: Tries: G Henson, S Winn, A Thomas, C Charvis;
Cons: A Thomas 2; DG: A Thomas.
The WRU has launched a campaign to create a long term legacy for Welsh club rugby by highlighting the advantages of volunteering. Rhian Edwards, a volunteer at Seven Sisters, has enjoyed many benefits of her volunteering at a grassroots rugby club including being part of the Rugby World Cup volunteer workforce after being nominated by the WRU - and the WRU is asking for more people to develop their 'Welsh rugby roots'.
Wales head coach Warren Gatland and captain Sam Warburton say their first prioirty on Sunday in the opening game of the World Cup is to win against Uruguay and not get overly concerned with points difference.
With only days to go until the biggest rugby competition in the world begins, rugby fans visiting Cardiff this autumn will be able to enjoy a special display at National Museum Cardiff as part of the celebrations surrounding the Rugby World Cup.
Geraint John has taken up the new role of WRU elite coach development manager having arrived in Wales last week. WRU TV caught up with him at the WRU rugby department's strategy day at the Millennium Stadium.