IAEA SAFETY STANDARDS Construction for Nuclear Installations

elevant parties. The construction programme should be fully integrated with a procurement
programme highlighting long lead in items. The regulatory bodies involved should be given
regular and timely updates of the construction schedule.
5.3 The planning, scheduling and work sequence should include hold and witness points
as necessary. Some may be specified by the licensee and regulatory body.
5.4 The construction planning, scheduling and work sequence should include
requirements for off-site manufacturing and assembling under an adequate quality assurance
programme.
5.5 The examination of specifications, documents and drawings, and plans and schedules
should identify which on-site manufacturing, assembling, installation, and inspection and
testing activities should be performed.
5.6 The construction organization should confirm the adequacy of construction methods
with reference to the principal designer 9
where necessary. There should be regular meetings
at which the contractor‟s methods are discussed with the design team. There is the potential
for the contractor‟s methods to undermine design assumptions. Conversely, early contractor
involvement can assist the designer in the appreciation of the contractor‟s preferred method of
construction and thus improve constructability.
5.7 Construction sequencing should ensure prior construction work (such as embedded
items in walls or ground) will not be adversely affected by later construction works. Special
9 Principal designer (or design authority) refers to the organization responsible for establishing the design
requirements and ensuring that design output documents accurately reflect the design basis. The principal
designer is responsible for design control and ultimate technical adequacy of the design process.
34