CSA N285.0-12/N285.6 SERIES-12

Preface

This is the second edition of CSA N285.0/N285.6 Series, General requirements for pressure-retaining systems and components in CANDU nuclear power plants/Material Standards for reactor components for CANDU nuclear power plants. It supersedes the previous edition of the CSA N285.0/N285.6 Series published in 2008, the previous editions of CSA N285.0 published in 2006, 1995, 1991, and 1981, and the previous editions of the CSA N285.6 Series published in 2005 and 1988.

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N285.0-12 – General requirements for pressure-retaining systems and components inCANDU nuclear power plants

Scope

1.1
This Standard specifies the technical requirements for the design,procurement, fabrication, installation, modification, repair,replacement, testing, examination, and inspection of, and other workrelated to, pressure-retaining systems, components, and supports overthe service life of a CANDU nuclear power plant.

1.2
This Standard applies to all pressure-retaining systems, including theircomponents and supports, in a CANDU nuclear power plant.

1.3
This Standard applies to containment components, but does not apply toconcrete containment structures.

1.4
This Standard does not apply to portable assemblies of pressurized itemsthat are temporarily connected to a system or component to enabletesting, venting, draining, calibration, or other maintenanceactivities, provided that they
(a) do not reduce the ability of a system to perform its design safetyfunction;
(b) are under surveillance when connected and are removed uponcompletion of their function; and
(c) are constructed to Standards deemed by the licensee to be suitablefor the application.
Note: Safety analysis, environmental qualification programs, or seismicqualification may be used to satisfy the conditions in this Clause.

1.5
In this Standard, “shall” is used to express a requirement, i.e., aprovision that the user is obliged to satisfy in order to comply withthe standard; “should” is used to express a recommendation or that whichis advised but not required; and “may” is used to express an option orthat which is permissible within the limits of the standard.
   Notes accompanying clauses do not include requirements or alternativerequirements; the purpose of a note accompanying a clause is to separatefrom the text explanatory or informative material.
   Notes to tables and figures are considered part of the table or figureand may be written as requirements.
   Annexes are designated normative (mandatory) or informative(nonmandatory) to define their application.

1.6
The values given in SI units are the units of record for the purposes ofthis Standard. The values given in parentheses are for information andcomparison only.

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N285.6.1-12 – Pressure tubes for use in CANDU fuel channels

1 Scope

This Standard specifies requirements for the fabrication and propertiesof seamless zirconium-2.5wt % niobium (Zr-2.5Nb) alloy pressure tubesfor use in fuel channels in CANDU reactors.

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N285.6.2-12 – Seamless zirconium alloy tubing for reactivity control units

Scope

This Standard specifies requirements for the fabrication and propertiesof seamless zirconium alloy tubing, Grades R60802 and R60804, withdiameter to wall thickness ratios less than 80. This tubing is used forreactivity control units in CANDU reactors.

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N285.6.3-12 – Annealed seamless zirconium alloy tubing for liquid injection shutdownsystem (LISS) nozzles

Scope

This Standard specifies requirements for the fabrication and propertiesof seamless zirconium-tin alloy tubing, Grade R60802 or R60804, which issuitable for use in liquid injection shutdown system (LISS) nozzleslocated in the moderator water in the core of a CANDU reactor.

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N285.6.4-12 – Thin-walled, large-diameter zirconium alloy tubing

Scope

This Standard specifies requirements for the fabrication and propertiesof thin-walled, large-diameter tubing made from zirconium-tin alloys,Grade R60802 or R60804.
Notes:
(1) Thin-walled, large diameter tubing has a diameter to wall thicknessratio greater than 50.
(2) This tubing can be used as calandria tubes and as tubes forreactivity control units in a CANDU reactor, and may be processed in theseamless or seam-welded condition.

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N285.6.6-12 – Non-destructive examination criteria for zirconium alloys

Scope

1.1
This Standard specifies requirements for non-destructive examinations(NDEs) of zirconium alloy components during manufacturing. NDE methodsinclude visual, radiographic, liquid-penetrant, ultrasonic, and eddycurrent techniques.

1.2
Other standards may be used for the NDE of zirconium alloys, providedthat they satisfy the requirements of this Standard.

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N285.6.7-12 – Zirconium alloy design data

Scope

This Standard specifies the physical and mechanical property data to beused in the design of the zirconium alloy components specified in theCSA N285.6 Series.

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N285.6.8-12 – Martensitic stainless steel for fuel-channel end fittings

Scope

1.1
This Standard specifies requirements for martensitic stainless steelforged blanks for the fuel-channel end fittings of a CANDU reactor.

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N285.6.9-12 – Materials for supports for pressure-retaining items

Scope

This Standard specifies requirements for material for the support ofpressure-retaining items in CANDU nuclear power plants. The materialscovered in this Standard are in addition to the materials permitted bythe ASME Boiler and Pressure Vessel Code (BPVC), Section III, Division1, NF-2000, and Code Cases.

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N285.6.10-12 – Nickel-based alloy wire for fuel-channel spacers

Scope

This Standard specifies requirements for the nickel-based alloy (UNSN07750) wire used to form spacers for use between the pressure tubes andcalandria tubes in the fuel channels in a CANDU reactor.

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N285.6.11-12 – Zirconium alloy wire

Scope

This Standard specifies requirements for wires made from zirconium-tinalloy, Grade R60802 or R60804, used in the welding of zirconiumcomponents and in the manufacture of the spacers that are installedbetween pressure tubes and calandria tubes in the fuel channels in aCANDU reactor.

Edition:

2nd

Published:

08/01/2012

ISBN(s):

9781771390194

Number of Pages:

240

File Size:

1 file , 6.3 MB

Product Code(s):

2422019, 2422801, 2422019

Note:

This product is unavailable in Russia, Ukraine, Belarus