Current
Mechanical & Electrical Supplement
Technical Report
Applies to welds in carbon steel pipework for use with water, steam and gas at pressures up to and including 17.0 bar and/or temperatures from -20°C up to and including 220°C.
Replaces HVCA version from 2003. First published 1980 and revised in 1990. Supersedes: Recommended practice and tests for certificates of competency for oxy-acetylene and metal-arc welds in mild steel pipework (HVCA, 1970).
A trade organisation meeting the needs of building engineering services contractors involved with design, installation, commissioning, maintenance, control and management of engineering systems and services in buildings. It was established in 1904 as the National Association of Master Heating and Domestic Engineers and has been through a few name changes since, including: Heating and Ventilating Contractors' Association (HVCA) and from 2012 it was the known as the Building and Engineering Services Association (BES).
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.