全国石油行业伤亡事故稳中有降１９９３年中国石油天然气总公司对全国石油企业提出明确要求，在转换经营机制中必须保证安全生产。具体作法是，在运行机制、组织机构和经营方针采取新的举措后，巩固多年来行之有效的管理方法，坚持实行三个不变。即“安全第一，预防为主”... National oil industry casualties have dropped steadily 1993 China National Petroleum Corporation on the national oil companies made clear requirements, in the conversion mechanism must ensure safe production. The specific approach is to consolidate the effective management methods that have been effective over the years and persist in implementing the three unchanged ones after taking new measures in the operational mechanism, the organizational structure and the operating principles. That is, “safety first, prevention first” ...