处理头盔式装置的所有主要部件，包括潜水员的空气供应，以确保人员安全。附录包含法定三个月定期检查的建议；手动空气泵效率测试；呼吸空气的纯净。交叉参考:BS 350BS 1319《工作场所潜水操作规程1981》

Deals with all the major components of the helmet-type apparatus, including divers' air supplies, to ensure the safety of personnel. Appendices contain recommendations for the statutory three-month periodical examination; manual air pump efficiency test; the purity of breathing air.Cross References:BS 350BS 1319Diving Operations at Work Regulations 1981