NB/T 20006.12-2011Alloy steel for pressurized water reactor nuclear power plants - Part 12: Mn-Ni-Mo steel main flange forgings for pressurized water reactor coolant pumps (English PDF)

1 Foreword

NB/T 20006.12-2011 was issued by National Energy Administration of the People's Republic of China on 1 July 2011 and has been in force since 1 October 2011.

It replaces the earlier edition NB/T 20006.12-2010.

It is one of 49 parts of the NB/T 20006 series.

2 Scope

Part 12 of the alloy steel series for pressurized water reactor nuclear power plants, NB/T 20006.12-2011 is the Chinese energy industry standard for the manganese-nickel-molybdenum steel main flange forgings of reactor coolant pumps. It specifies their manufacture, trial production, inspection and acceptance. The grade named is 16MnNiMo alloy steel, used for the main flange of the reactor coolant pump. Among the documents it cites are GB/T 228-2002, GB/T 4336, GB/T 11261, GB/T 14265, GB/T 20066, GB/T 20123, GB/T 20124 and GB/T 20125, plus many parts of GB/T 223 and the nuclear documents NB/T 20003.2-2010, NB/T 20003.4, NB/T 20003.5, NB/T 20003.7 and NB/T 20004-2011.

3 Normative references

NB/T 20006.12-2011 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 223.5

GB/T 223.9

GB/T 223.11

GB/T 223.12

GB/T 223.14

GB 223.19

GB/T 223.21

GB/T 223.23

GB/T 223.26

GB/T 223.31

GB 223.37

GB/T 223.47

GB 223.53

GB 223.58

GB/T 223.59

GB/T 223.60

GB 223.62

GB 223.63

GB/T 223.64

GB/T 223.67

GB/T 223.68

GB/T 223.69

GB/T 223.71

GB/T 223.76

GB/T 223.78

GB/T 223.79

GB/T 223.80

GB/T 223.82

GB/T 223.85

GB/T 228-2002

GB/T 4336

GB/T 11261

GB/T 14265

GB/T 20066

GB/T 20123

GB/T 20124

GB/T 20125

NB/T 20003.2-2010 — Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 2: Ultrasonic testing

NB/T 20003.4

NB/T 20003.5

NB/T 20003.7

NB/T 20004-2011 — Physical and Chemical Test Methods for Material Used in Nuclear Island Mechanical Components of Nuclear Power Plants

4 About this standard

Issued by: National Energy Administration of the People's Republic of China

English translation: about 15 pages

5 Related standards

Other parts of this standard:

NB/T 20006.1-2011 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 1: Mn-Ni-Mo Steel Forgings for Reactor Pressure Vessel Shells in the Beltline Region

NB/T 20006.1-2021 — Part 1: Mn-Ni-Mo steel forgings for reactor pressure vessel shells in the beltline region

NB/T 20006.1-2024 — Alloy steels for pressurized water reactor nuclear power plants - Part 1: Manganese-nickel-molybdenum alloy steel forgings for reactor pressure vessel cylinders subjected to strong irradiation

NB/T 20006.2-2011 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 2: Mn-Ni-Mo Steel Forgings for Reactor Pressure Vessel Shells Outside the Beltline Region

NB/T 20006.2-2021 — Part 2: Mn-Ni-Mo steel forgings for reactor pressure vessel shells outside the beltline region

NB/T 20006.3-2011 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 3: Mn-Ni-Mo Steel Forgings for Transition Rings and Flanges of Reactor Pressure Vessels

NB/T 20006.3-2021 — Part 3: Mn-Ni-Mo steel forgings for transition rings and flanges of reactor pressure vessels

NB/T 20006.4-2011 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 4: Mn-Ni-Mo Steel Forgings for Reactor Pressure Vessels Nozzles

NB/T 20006.4-2021 — Part 4: Mn-Ni-Mo steel forgings for reactor pressure vessels nozzles

NB/T 20006.5-2012 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 5: Mn-Ni-Mo Steel Forgings for Reactor Pressure Vessel Heads

NB/T 20006.5-2021 — Part 5: Mn-Ni-Mo alloy steel forgings for reactor pressure vessel heads

NB/T 20006.6-2011 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 6: Mn-Ni-Mo Steel Forgings for PWR Steam Generator Tube Plates

NB/T 20006.7-2012 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 7: Mn-Ni-Mo Steel Forgings for Steam Generator Shells

NB/T 20006.7-2024 — Part 7: Steam generator cylinder Manganese-nickel-molybdenum steel forgings

NB/T 20006.8-2012 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 8: Mn-Ni-Mo Steel Forgings for Steam Generator Upper Heads

NB/T 20006.9-2013 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 9: Mn-Ni-Mo Steel Forgings for Steam Generator Channel Head

NB/T 20006.9-2024 — Alloy steels for pressurized water reactor nuclear power plants - Part 9: Manganese-nickel-molybdenum steel forgings for steam generator water chamber heads

NB/T 20006.10-2010 — Part 10: Mn-Ni-Mo steel forgings for pressurizer and steam generator nozzles and covers

NB/T 20006.10-2021 — Part 10: Manganese-Nickel-Molybdenum steel forgings for pressurizer and steam generator nozzles and covers

NB/T 20006.11-2010 — Part 11: Mn-Ni-Mo steel forgings for pressurizer shells and heads

NB/T 20006.11-2021 — Part 11: Mn-Ni-Mo steel forgings for pressurizer shells and heads

NB/T 20006.11-2024 — Part 11: Mn-Ni-Mo steel forgings for stabilizer cylinders and heads

NB/T 20006.13-2012 — Part 13: Alloy steel forgings for reactor coolant pump motor shaft assemblies

NB/T 20006.14-2010 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 14: Forged Nickel-chromium-molybdenum Steel Bars With or Without Vanadium for Use in Making Class 1 Components Bolts Fastener

NB/T 20006.14-2024 — Part 14: Forged chromium-nickel-molybdenum steel bars for fasteners ofthe reactor pressure vessel and reactor coolant pump

NB/T 20006.15-2013 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 15: Mn-Ni-Mo Steel Plates for Pressure-retaining Boundaries

NB/T 20006.16-2013 — Alloy Steel for Pressurized Water Reactor Nuclear Power Plants - Part 16: Mn-Ni-Mo Steel Plates for Pressurizer Supports

NB/T 20006.16-2021 — Part 16: Mn-Ni-Mo steel plates for supports of nuclear island equipment

NB/T 20006.17-2021 — Alloy steel for PWR nuclear power plant - Part 17: Mn-Ni-Mo steel forgings for flange-nozzle section of reactor pressure vessel

NB/T 20006.18-2019 — Part 18: Manganese-nickel-molybdenum alloy steel forgings for the overall top cover of reactor pressure vessels

NB/T 20006.19-2019 — Part 19: Manganese-nickel-molybdenum alloy steel forgings for reactor coolant pump casings

NB/T 20006.20-2024 — Alloy steels for pressurized water reactor nuclear power plants - Part 20: Seamless steel pipes for main steam and main feed water pipes

NB/T 20006.21-2024 — Part 21: Mn-Ni-Mo alloy steel forgings for reactor pressure vessel integrated bottom head

NB/T 20006.31-2015 — Part 31: 10MnNiMoHR steel plates for containment vessel

NB/T 20006.32-2016 — Part 32: 15Cr1Mo forgings for containment vessel mechanical penetrations

NB/T 20006.33-2016 — Part 33: 10Cr1Mo pipe for steam generator

NB/T 20006.34-2016 — Part 34: 10Cr1Mo pipe fittings for steam generator

NB/T 20006.35-2016 — Part 35: 10Cr2Mo1 bars for steam generator

NB/T 20006.36-2017 — Part 36: 19MnNiMo steel forgings for reactor vessel core region

NB/T 20006.37-2017 — Part 37: 19MnNiMo steel forgings for reactor vessel non-core region

NB/T 20006.38-2017 — Part 38: 19MnNiMo steel forgings for core make-up tank

NB/T 20006.38-2024 — Part 38: Manganese-nickel-molybdenum steel forgings for passive wastewater treatment and other equipment

NB/T 20006.39-2017 — Part 39: Steel bars for integrated head package

NB/T 20006.40-2018 — Part 40: Forgings for integrated head package

NB/T 20006.41-2018 — Part 41: Bars for bolts, nuts and washers of reactor vessel

NB/T 20006.42-2018 — Part 42: Alloy steel forgings used for nuclear safety related equipment

NB/T 20006.43-2018 — Part 43: Alloy steel plates for nuclear safety related equipment

NB/T 20006.44-2019 — Part 44: Alloy steel rods for safety grade equipment bolts

Other editions:

NB/T 20006.12-2010 (earlier edition)

6 Classification and status

International classification (ICS): 77.140.85

Prefix NB/T: recommended standard.