Understand the core competencies of gas installation with this accessible textbook Gas operatives in the UK must be Gas Safe registered, suitably qualified and assessed as competent in the aspect of gas work that they wish to undertake. Qualification is gained by means of an industry recognised Managed Learning Programme or a gas aligned National Vocational Qualification (NVQ/SNVQ). Periodic renewal thereafter is by means of the National Accredited Certification Scheme (ACS). Gas Installation Technology is the definitive textbook for students enrolled in any of these courses. Now fully updated to reflect new standards and the most up to date best practices, it remains the indispensable reference for anyone working in the gas industry.