S1-1 Scope

S1-1.1

[Replace this clause with the following]

This Supplement establishes requirements for

a) classification of the pressure-retaining Systems identified in Clause S1-1.2;

b) construction of

i) vessels;

ii) piping systems;

iii) pumps;

iv) valves;

v) metallic containment boundary components;

vi) component supports;

vii) core support structures;

viii) non-metallic core components, and assemblies;

ix) fittings; and

x) other pressure-retaining components used in nuclear power plants; and

c) in-service inspection, modification, repair, and replacement activities for the items in b) above.

S1-1.2

[Replace this clause with the following]

Except for Clause S1-1.3, this Supplement applies to items in Clause S1-1.1 for systems that have been designated by the licensee as important to safety, including

safety systems;

safety support systems; and

other systems whose failure may lead to safety concerns (e.g., process and control systems).

S1-1.3

[Replace this clause with the following]

This Supplement does not apply to

containment structures that are covered in the CSA N287 series of Standards but does apply to containment components;

system complementary design features that are covered in CSA N290.16; or

sensing elements of instruments.

S1-1.4  

[Current clause in CSA N285.0:23 is applicable]

S1-1.5

[Current clause in CSA N285.0:23 is applicable]

S1-1.6

[Current clause in CSA N285.0:23 is applicable]