NB/T 20008.17-2012Other Material for Pressurized Water Reactor Nuclear Power Plants - Part 17: Classes 2 and 3 Unalloyed and Alloy Ductile Iron Castings (English PDF)

1 Foreword

NB/T 20008.17-2012 was issued by NEA on 19 October 2012 and has been in force since 1 March 2013.

It is one of 43 parts of the NB/T 20008 series.

2 Scope

This standard is Part 17 of the Chinese energy industry series on other materials for pressurized water reactor nuclear power plants, and it treats the unalloyed and alloy ductile iron castings of classes 2 and 3. It specifies their manufacture, chemical composition, mechanical properties, metallographic examination and non-destructive testing, together with the removal and repair of defective areas. The castings covered are QT350-22R and QT350-22AR unalloyed ductile iron and QTANi20Cr2 austenitic ductile iron for pump casings, the same unalloyed grades for class 2 and class 3 non-pressure pump casings, and QT400-18R and QT400-18AR unalloyed ductile iron for the magnet yoke of the control rod drive mechanism. Chemical analysis follows the GB/T 223 series that it quotes.

3 Normative references

NB/T 20008.17-2012 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 223.3

GB/T 223.11

GB/T 223.18

GB/T 223.19

GB/T 223.25

GB/T 223.53

GB/T 223.58

GB/T 223.59

GB/T 223.60

GB/T 223.61

GB/T 223.63

GB/T 223.64

GB/T 223.68

GB/T 223.71

GB/T 223.72

GB/T 223.74

GB/T 223.79

GB/T 223.85

GB/T 223.86

GB/T 228.

4 About this standard

Issued by: NEA

English translation: about 15 pages

5 Related standards

Other parts of this standard:

NB/T 20008.1-2012 — Part 1: Alloy Steel Forgings for Use in Reactor Coolant System Supports

NB/T 20008.2-2010 — Part 2: Mn-mo-v Steel Castings for Use in the Fabrication of Steam Generator and Reactor Coolant Pump Supports, Main Steam Line Supports

NB/T 20008.3-2012 — Part 3: Class 3 Copper-aluminium Alloy Castings for Auxiliary System Pumps and Valves

NB/T 20008.4-2012 — Part 4: Forged or Rolled Classes 1, 2 and 3 Nickel-Chromium-Iron Alloy Parts

NB/T 20008.4-2024 — Other materials for pressurized water reactor nuclear power plants - Part 4: 1, 2 , Nickel-chromium-iron alloy forgings and rollings for level 3 equipment

NB/T 20008.5-2012 — Part 5: Class 1 and 2 Hot Rolled Nickel-Chromium-Iron Alloy Plates

NB/T 20008.6-2012 — Part 6: Hot Rolled Nickel-Chromium-Iron Alloy Plates

NB/T 20008.6-2024 — Other materials for pressurized water reactor nuclear power plants - Part 6: Nickel-based corrosion resistant alloy plates

NB/T 20008.7-2013 — Other Materials for Pressurized Water Reactor Nuclear Power Plants - Part 7: Seamless Nickel-chromium-iron Alloy for Steam Generator Tubes Bundles

NB/T 20008.7-2021 — Other materials for pressurized water reactor nuclear power plants - Part 7: Seamless nickel-chromium-iron alloy tubes for steam generator tube bundles

NB/T 20008.8-2012 — Other Materials for Pressurized Water Reactor Nuclear Power Plants - Part 8: Hot Extruded Nickel-chromium-iron Alloy Pipes

NB/T 20008.8-2021 — Other materials for pressurized water reactor nuclear power plants - Part 8: Hot extruded nickel-chromium-iron alloy pipes

NB/T 20008.8-2024 — Other materials for pressurized water reactor nuclear power plants - Part 8: Nickel-based corrosion-resistant alloy pipe

NB/T 20008.9-2012 — Part 9: Hot Rolled or Hot Extruded Nickel-Chromium-Iron Alloy Bars

NB/T 20008.9-2024 — Other materials for pressurized water reactor nuclear power plants - Part 9: Nickel-based corrosion resistant alloy rods

NB/T 20008.10-2012 — Part 10: Ni-Cr-Fe Alloy Rolled Bars Used for Internal Support Pins and Bolting

NB/T 20008.10-2024 — Other materials for pressurized water reactor nuclear power plants - Part 10: Nickel-based alloy rods for reactor internals and control rod drive mechanisms

NB/T 20008.11-2013 — Other Materials for Pressurized Water Reactor Nuclear Power Plants - Part 11: Rolled or Forged Bars for the Manufacture of Classes S1 and S2 Shafts, Tie-rods and Support Bolts

NB/T 20008.11-2024 — Other materials for pressurized water reactor nuclear power plants - Part 11: Forged bars for supports and connections

NB/T 20008.12-2010 — Part 12: Forged or Rolled Bars for Classes 1, 2, 3 Bolts and Nuts

NB/T 20008.13-2013 — Other Materials for Pressurized Water Reactor Nuclear Power Plants - Part 13: Classes 1, 2, 3 Studs, Bolts, Screws, Threaded Rods and Nuts

NB/T 20008.14-2013 — Other Materials for Pressurized Water Reactor Nuclear Power Plants - Part 14: Nickel-chromium-iron Alloy Wires of Springs

NB/T 20008.15-2012 — Part 15: Titanium Plate for Use in the Fabrication of Class 3 Heat Exchanger Plates

NB/T 20008.16-2012 — Other material for pressurized water reactor nuclear power plants - Part 16: Cobalt-base alloy for control rod drive mechanism

NB/T 20008.21-2015 — Other material for pressurized water reactor nuclear power plants - Part 21: GH4169 alloy bars used for CRDM

NB/T 20008.22-2015 — Other material for pressurized water reactor nuclear power plants - Part 22: GH4145 alloy bars used for CRDM

NB/T 20008.23-2015 — Other Material for pressurized water reactor nuclear power plants - Part 23: Ni-base-alloy Wires used for CRDM

NB/T 20008.24-2015 — Other material for pressurized water reactor nuclear power plants - Part 24: GH4145 alloy bars for reactor vessel internals

NB/T 20008.25-2015 — Other material for pressurized water reactor nuclear power plants - Part 25: GH4169 alloy wires for reactor vessel internals

NB/T 20008.26-2017 — Other material for pressurized water reactor nuclear power plants - Part 26: spheroidal graphite cast iron used for control rod drive mechanism

NB/T 20008.27-2017 — Other materials for pressurized water reactor nuclear power plants - Part 27: ZCoCr29W4.5 castings used for CRDM

NB/T 20008.28-2017 — Other material for pressurized water reactor nuclear power plants - Part 28: NS3105 alloy forgings for nuclear safety related equipment

NB/T 20008.29-2017 — Other material for pressurized water reactor nuclear power plants - Part 29: NS3105 alloy plates and strips for nuclear safety related equipment

NB/T 20008.30-2017 — Other material for pressurized water reactor nuclear power plants - Part 30: NS3105 alloy pipes for nuclear safety related equipment

NB/T 20008.31-2017 — Other material for pressurized water reactor nuclear power plants - Part 31: NS3105 alloy bars for nuclear safety related equipment

NB/T 20008.32-2017 — Other material for pressurized water reactor nuclear power plants - Part 32: NS3306 alloy sheet and strip for CRDM

NB/T 20008.33-2017 — Other material for pressurized water reactor nuclear power plants - Part 33: GH5605 alloy bars for CRDM

NB/T 20008.34-2018 — Other material for pressurized water reactor nuclear power plants - Part 34: Alloy NS3105 U-bending tube used for steam generator

NB/T 20008.35-2018 — Other material for pressurized water reactor nuclear power plants - Part 35: Alloy NS3105 C-bending tube used for passive residual heat removal heat exchanger

NB/T 20008.36-2019 — Other materials for pressurized water reactor nuclear power plants Part 36: Nickel-based alloy wire for safety equipment

NB/T 20008.37-2019 — Other materials for pressurized water reactor nuclear power plants Part 37: Stainless steel clad steel plate for safety injection box

NB/T 20008.38-2019 — Other materials for pressurized water reactor nuclear power plants Part 38: Nickel-based corrosion-resistant alloy forgings for blast valve shear covers

6 Classification and status

International classification (ICS): 77.080.10

Prefix NB/T: recommended standard.