I will monitor the situation closely and urgently work to establish how best to achieve and sustain cultural change across the Fire and Rescue Service.
Byddaf yn cadw llygad barcud ar y sefyllfa ac yn mynd ati ar unwaith i sefydlu sut orau i gyflawni a chynnal newid diwylliannol ar draws y Gwasanaeth Tân ac Achub.