# The Building (Higher-Risk Buildings Procedures) (Wales) Regulations 2025, Regulation 35: Mandatory occurrence reporting: definitions

Extent: E+W

(1) In regulations 31 to 34—
“construction phase” (“cyfnod adeiladu”) means the period of time beginning when the HRB work, a stage of HRB work or work to existing HRB starts and ending when the work is completed;
“HRB design work” (“gwaith dylunio ARU”) means design of any HRB work, stage of HRB work or work to existing HRB;
“principal dutyholders” (“prif ddeiliaid dyletswyddau”) means the principal contractor (or sole contractor) and the principal designer (or sole or lead designer);
“reporting person” (“person sy’n adrodd”) means—
(a)any designer (including the principal designer),
(b)any contractor (including the principal contractor), and
(c)any other person who is a periodic visitor on the site of work;
“safety occurrence” (“achlysur diogelwch”) means—
(a)in relation to a design, an aspect of design relating to the structural integrity or fire safety of a higher-risk building that would, if built, meet the risk condition;
(b)otherwise, an incident or situation relating to the structural integrity or fire safety of a higher-risk building that meets the risk condition.
(2) In the definition of “safety occurrence”, the “risk condition” is that use of the building in question without the incident or situation being remedied would be likely to present a risk of a significant number of deaths, or serious injury to a significant number of people.

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Source: https://www.legislation.gov.uk/wsi/2025/1321/regulation/35 (the official version)
Page: https://openlegislation.uk/building-higher-risk-buildings-procedures-wales-regulations-2025/regulation-35
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.