Page 679 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

Glossary

Chased: in the case of pipework or droplets that are collected in Dialect: a combination of the
cables, this means they are fitted the boiler and discharged via the way people pronounce words,
inside a cut made in a wall. condense pipework. the vocabulary they use and
the grammatical structures they use.
Chronic injury: type of injury that Corrosion: any process involving
can take weeks, months or even the deterioration or degradation Dressing: the term used by
years to develop. of metal components, where the plumbers to describe the preparation
metal’s molecular structure breaks of the appliances ready for
Code of practice: similar to a
British Standard, this is a set of down irreparably. installation.
rules that explains how people Crimping: the process of pressing Duty holder: a person who controls,
should behave in their chosen the fittings into a copper pipe using reduces or eliminates health and
profession. a ‘press fit’ or crimping tool. safety risks that may arise during
Cohesion: the way in which the CSCS card: this stands for the construction of a building or
water molecules ‘stick’ to one Construction Skills Certification during future maintenance. They
another to form a mass rather than Scheme card. Its purpose is to must also provide information for
staying individual. This is because confirm that people who work the health and safety file.
water molecules are attracted to in the built environment have Duty of care: in British law, the
other water molecules. the necessary competence, and moral and legal obligation imposed
identifies their qualifications. For on an organisation or individual,
Combination (‘combi’) boiler: a example, a trainee plumber would which necessitates that a standard
boiler that provides central heating carry a small plastic ID craft or of reasonable care is adhered to.
and instantaneous hot water.
operative card that identifies them If the standard of care is not met,
Competent: having the necessary as a person enrolled on an NVQ then the acts are considered to
ability, knowledge or skill. programme but not yet qualified. be negligent and damages may be
Comply: act in accordance with; Delegation: sharing or transfer of claimed for in a court of law.
meet the standards of. authority and responsibility, from Electrolyte: a fluid that allows the

Compression: the process of water an employer or supervisor to an passage of electrical current, such
hitting a bend at forces that cause employee. as water. The more impurities (such
a shock wave of air upwards. Derived units: combinations of as salts and minerals) there are in
the seven base units by a system the fluid, the more effective it is as
Conciliation: an alternative dispute an electrolyte.
resolution process whereby the of multiplication and division
parties to a dispute agree to calculations. There are 21 derived Equipotential bonding: a system
use the services of a conciliator, units of measurement, some of where all metal fixtures in a
who then meets with the which have special names and domestic property, such as hot
parties separately in an attempt symbols. and cold water pipes, central
to resolve their differences. Deviate: change; do differently heating pipes, gas pipes, radiators,
Collective conciliation is when a from the original plan. stainless-steel sinks, pressed-steel
group of employees is involved, Dew point: the temperature at enamelled washbasins and steel
and individual conciliation is which the moisture within a gas is and cast iron baths, are connected
when there is only one employee released to form water droplets. together through earth bonding so
involved in the dispute. that they are at the same potential
When a gas reaches its dew point, voltage everywhere.
Condensate: the water vapour that the temperature has been cooled
is present in the CO emissions to the point where the gas can Erroneous: wrong; incorrect.
2
resulting from burning gas. As the no longer hold the water and it is European Norm number: a number
flue gases cool down, the water released in the form of ‘dew’, or that shows that something meets
vapour condenses back into water water droplets. not only a British Standard but also

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