Mae'r gostyngiad yn nifer yr achosion o danau a’r rhai sydd wedi eu hanafu gan dân yn dipyn o gamp. Mae'n golygu bod gwaith y Gwasanaeth Tân ac Achub yn canolbwyntio'n gynyddol ar atal - ar leihau'r risg o dân, ac yn gynyddol, ar leihau risgiau eraill hefyd. Mae'r dystiolaeth yn glir fod eu rhaglenni diogelwch tân craidd yn gweithio'n dda iawn ac mae’r gostyngiad cyffredinol yn nifer y tanau yn arwydd o hynny. Ond mae mentrau penodol Awdurdodau Tân ac Achub hefyd wedi cael effaith amlwg. Er enghraifft, mae’r gwaith amlasiantaethol ar leihau tanau glaswellt wedi arwain at ostyngiad o 50% dros ddwy flynedd; ac mae eu hymyriadau dwys gyda phobl ifanc sydd mewn perygl o droseddu yn gyson yn cyflawni lefelau neilltuol o newid ymddygiad a llai o atgwympo.
The fall in the incidence of fire and fire casualties is a great achievement. It means the business of the Fire and Rescue Service increasingly focuses on prevention – on reducing the risk of fire and, increasingly, on reducing other risks too. The evidence is clear that their core fire safety programmes are working very well and the overall reduction in the number of fires says as much. But specific FRA initiatives have also had a demonstrable effect. For instance, multi-agency work to reduce grass fires has led to a 50% fall over 2 years and intensive interventions with young people at risk of offending consistently achieve exceptional levels of behaviour change and reduced recidivism.