In these Regulations—
“the 1974 Act” means the Health and Safety at Work etc. Act 1974;
“the 2009 Regulations” means the Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009 ;
“acetylene” means the hydrocarbon chemical listed under that name in the European inventory of existing commercial chemical substances, published in O.J. C 146A on 15th June 1990, under entry number 200-816-9;
“acetylene equipment” means any equipment containing compressed acetylene gas , excluding a cylinder and acetylene manifold but including a pipe, hose, valve, or device that is—
designed or manufactured for use with compressed acetylene gas, or
used with compressed acetylene gas;
“acetylene gas” means acetylene gas—
in a free gaseous state,
dissolved in a solution, or
contained in a homogeneous porous material, with or without a solvent;
“acetylene manifold” means a system of interconnected pipework in which compressed acetylene gas is contained, and which connects to, but excludes, a cylinder;
“bar(g)” means pressure, above atmospheric pressure, measured in the unit bar;
“compressed acetylene gas” means acetylene gas at pressure equal to or greater than 0.62 bar(g);
“cylinder” means—
transportable pressure equipment within the meaning of article 2(1)(a) of the Transportable Pressure Equipment Directive; or
an old pressure receptacle which—
satisfies the requirements of regulation 14(4) of the 2009 Regulations, and
is to be treated as an old pressure receptacle under regulation 15(9) of these Regulations;
“licence” means a licence granted under regulation 9 and includes a renewed, varied or transferred licence;
“licensee” means a person who has been granted a licence under regulation 9 and includes—
a person to whom a licence is transferred;
a person treated as being the licensee under regulation 13; and
a person deemed to hold a licence under regulation 15.
“licensing authority” means—
in relation to a relevant activity carried out on ONR regulated premises, the ONR;
otherwise, the Executive;
“old pressure receptacle” means an old pressure receptacle within the meaning of regulation 14(6) of the 2009 Regulations;
“ONR” means the Office for Nuclear Regulation;
“ONR regulated premises” means any premises which are, or are on—
a GB nuclear site (within the meaning of section 68 of the Energy Act 2013 ),
an authorised defence site (within the meaning of regulation 2(1) of the Health and Safety (Enforcing Authority) Regulations 1998 ), or
a new nuclear build site (within the meaning of regulation 2A of those Regulations ).
“relevant activity” means any of the following or a combination of any of the following—
the manufacture of compressed acetylene gas,
the compression of acetylene gas equal to or greater than 0.62 bar(g), or
the filling of a cylinder with compressed acetylene gas;
“relevant date” means the date when these Regulations come into force;
“risk” means the likelihood of a person’s safety being affected by any uncontrolled release of energy caused by—
the decomposition of acetylene gas or acetylene–derived compounds, or
any uncontrolled combustion of acetylene gas or acetylene–derived compounds; and
“the Transportable Pressure Equipment Directive” means Directive 2010/35/EU of the European Parliament and Council repealing Council Directives 76/767/EEC , 84/525/EEC , 84/526/EEC , 84/527/EEC and 1999/36/EC .