This Subsection contains requirements for the material, design, fabrication, examination, testing and overpressure protection of items which are intended to conform to the requirements for Class MC construction. The rules of Subsection NE cover the requirements for assuring the structural integrity of items. Careful application of this Section will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes.

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PDF Pages	PDF Title
5	TABLE OF CONTENTS
8	List of Sections
9	FOREWORD
11	STATEMENT OF POLICY ON THE USE OF THE ASME SINGLE CERTIFICATION MARK AND CODE AUTHORIZATION IN ADVERTISING STATEMENT OF POLICY ON THE USE OF ASME MARKING TO IDENTIFY MANUFACTURED ITEMS
12	Personnel
34	Correspondence With the Committee
36	ORGANIZATION OF SECTION III 1 GENERAL
37	2 SUBSECTIONS 3 ARTICLES 4 SUBARTICLES 5 SUBSUBARTICLES 6 PARAGRAPHS 7 SUBPARAGRAPHS 8 SUBSUBPARAGRAPHS
38	9 REFERENCES
40	SUMMARY OF CHANGES
41	Cross-Referencing in the ASME BPVC
43	Article NE-1000 Introduction NE-1100 Scope and General Requirements NE-1110 Aspects of Construction Covered by These Rules NE-1120 Temperature Limits NE-1130 Boundaries of Jurisdiction
45	Figures Figure NE-1110-1 Typical Containment Penetrations
46	Figure NE-1131-1 Some Typical Jurisdictional Boundaries for Welded Connections Class MC Containment Vessels
47	Figure NE-1132.2-1 Attachments in the Containment Vessel Support Load Path That Do Not Perform a Pressure-Retaining Function
48	Figure NE-1132.2-2 Attachments That Do Not Perform a Pressure-Retaining Function and Are Not in the Containment Vessel Support Load Path (Nonstructural Attachments)
49	Figure NE-1132.2-3 Attachments That Perform a Pressure-Retaining Function
50	Article NE-2000 Material NE-2100 General Requirements for Material NE-2110 Scope of Principal Terms Employed NE-2120 Pressure-Retaining Material
51	Tables Table NE-2121(a)-1 Material Specifications and Grades Permitted for Class MC Construction
52	Table NE-2121(a)-2 Permitted Bolting Material Specifications
54	NE-2130 Certification of Material NE-2140 Welding Material NE-2150 Material Identification NE-2160 Deterioration of Material in Service NE-2170 Heat Treatment to Enhance Impact Properties NE-2180 Procedures for Heat Treatment of Material NE-2190 Non-Pressure‐Retaining Material NE-2200 Material Test Coupons and Specimens for Ferritic Steel Material NE-2210 Heat Treatment Requirements
55	NE-2220 Procedure for Obtaining Test Coupons and Specimens for Quenched and Tempered Material
57	NE-2300 Fracture Toughness Requirements for Material NE-2310 Material to Be Impact Tested Table NE-2311(a)-1 Exemptions From Impact Testing Under NE-2311(a)(8)
58	NE-2320 Impact Test Procedures NE-2330 Test Requirements and Acceptance Standards
59	NE-2340 Number of Impact Tests Required Table NE-2332.1-1 Required Cv Lateral Expansion Values for Pressure-Retaining Material Other Than Bolting
60	Table NE-2332.1-2 Required Cv Energy Values for Pressure-Retaining Material Other Than Bolting Table NE-2332.3(a)-1 Required Cv Values for Bolting Material Tested in Accordance With NE-2332.3(a) Table NE-2332.3(b)-1 Required Cv Values for Bolting Material Tested in Accordance With NE-2332.3(b) and NE-2333.2 Table NE-2333.1-1 Required Cv Energy Values for Pressure-Retaining Material Other Than Bolting for the Overpressure Test
61	NE-2350 Retests NE-2360 Calibration of Instruments and Equipment NE-2400 Welding Material NE-2410 General Requirements
62	NE-2420 Required Tests NE-2430 Weld Metal Tests
63	Table NE-2432.1-1 Sampling of Welding Materials for Chemical Analysis
64	Table NE-2432.2-1 Welding Material Chemical Analysis
65	NE-2440 Storage and Handling of Welding Material NE-2500 Examination and Repair of Pressure-Retaining Material NE-2510 Pressure-Retaining Material NE-2530 Examination and Repair of Plate Figure NE-2433.1-1 Weld Metal Delta Ferrite Content
66	NE-2540 Examination and Repair of Forgings and Bars
67	NE-2550 Examination and Repair of Seamless and Welded (Without Filler Metal) Tubular Products and Fittings
69	NE-2560 Examination and Repair of Tubular Products and Fittings Welded With Filler Metal
70	NE-2570 Examination and Repair of Statically and Centrifugally Cast Products Table NE-2571-1 Required Examinations
72	Figure NE-2575.2-1 Typical Pressure-Retaining Parts of Vessels
73	NE-2580 Examination of Bolts, Studs, and Nuts NE-2600 Material Organizations’ Quality System Programs NE-2610 Documentation and Maintenance of Quality System Programs
74	NE-2700 Dimensional Standards NE-2710 Standards and Specifications
75	Article NE-3000 Design NE-3100 General Design NE-3110 Loading Criteria
76	NE-3120 Special Considerations
77	NE-3130 General Design Rules
81	NE-3200 Design by Analysis NE-3210 Design Criteria
82	NE-3220 Stress Intensity and Buckling Stress Values for Other Than Bolts
83	Table NE-3221-1 Stress Intensity Limits
85	NE-3230 Stress Limits for Bolts
86	NE-3300 Design by Formula NE-3310 Design Criteria NE-3320 Design Considerations
87	Figure NE-3324.2-1 Principal Dimensions of Typical Heads Table NE-3324.2-1 Values of Factor K
90	Table NE-3324.8(b)-1 Values of Factor M
91	Table NE-3324.11(b)(2)-1 Values of Δ for Junctions at the Large Cylinder for α ≤ 30 deg Table NE-3324.11(b)(3)-1 Values of Δ for Junctions at the Small Cylinder for α ≤ 30 deg
92	Figure NE-3324.11(a)(6)-1 Large Head Openings: Reverse Curve and Conical Shell Reducer Sections
93	Figure NE-3325-1 Some Acceptable Types of Unstayed Flat Heads and Covers
96	Figure NE-3326.1-1 Spherically Dished Covers With Bolting Flanges
98	NE-3330 Openings and Reinforcement
99	Figure NE-3332.2-1 Chart for Determining Values of F
100	Table NE-3332.2-1 Values of Spherical Radius Factor K1
101	Figure NE-3334.2-1 Nozzle Dimensions
102	Figure NE-3335.1-1 Arrangement of Multiple Openings
103	Figure NE-3338.2-1 Direction of Stress Components
104	NE-3350 Design of Welded Connections Table NE-3338.2(c)-1Stress Indices for Nozzles
105	Figure NE-3351-1 Welded Joint Locations Typical of Categories A, B, C, and D
106	Figure NE-3352-1 Typical Butt Joints
109	Figure NE-3358.1(a)-1 Heads Attached to Shells
111	NE-3360 Special Vessel Requirements Figure NE-3361-1 Category A and B Joints Between Sections of Unequal Thickness
114	NE-3700 Electrical and Mechanical Penetration Assemblies NE-3720 Design Rules
115	Article NE-4000 Fabrication and Installation NE-4100 General Requirements NE-4110 Introduction NE-4120 Certification of Material and Fabrication by Component Certificate Holder
116	NE-4130 Repair of Material NE-4200 Forming, Fitting, and Aligning NE-4210 Cutting, Forming, and Bending
117	NE-4220 Forming Tolerances Figure NE-4221.1-1 Maximum Difference in Cross‐Sectional Diameters
118	Figure NE-4221.2-1 Maximum Permissible Deviation e From a True Circular Form
119	Figure NE-4221.2-2 Maximum Arc Length for Determining Plus or Minus Deviation
120	NE-4230 Fitting and Aligning NE-4240 Requirements for Weld Joints Table NE-4232-1 Maximum Allowable Offset in Final Welded Joints
121	Figure NE-4243-1 Attachment of Pressure Parts to Plates to Form a Corner Joint
122	Figure NE-4243-2 Acceptable Types of Full Penetration Weld Details for Category C Joints
123	Figure NE-4243.1-1 Typical Flat Heads
124	Figure NE-4244(a)-1 Nozzles Attached by Full Penetration Butt Welds
125	Figure NE-4244(b)-1 Nozzles Attached by Full Penetration Corner Welds
126	NE-4300 Welding Qualifications NE-4310 General Requirements NE-4320 Welding Qualifications, Records, and Identifying Stamps
127	Figure NE-4244(c)-1 Deposited Weld Metal for Openings and Nozzles
128	Figure NE-4244(d)-1 Acceptable Types of Welded Nozzles Using Partial Penetration Welds
129	Figure NE-4244(d)-2 Partial Penetration Weld Connections
130	Figure NE-4244(d)-3 Partial Penetration Weld Connections for Coaxial Cylinders Figure NE-4244(e)-1 Acceptable Types of Fittings With Internal Threads
131	Figure NE-4244(e)-2 Acceptable Types of Small Fittings
132	Figure NE-4244(f)-1 Tube Connections
133	NE-4330 General Requirements for Welding Procedure Qualification Tests
135	NE-4340 Performance Qualification of Welders for Clad Material NE-4400 Rules Governing Making, Examining, and Repairing Welds NE-4410 Precautions to Be Taken Before Welding NE-4420 Rules for Making Welded Joints
137	Figure NE-4427-1 Fillet and Socket Weld Details and Dimensions
138	NE-4430 Welding of Attachments
139	NE-4450 Repair of Weld Metal Defects Figure NE-4437(b)-1 Attachment of Stiffening Rings to Shell
140	NE-4600 Heat Treatment NE-4610 Welding Preheat Requirements NE-4620 Postweld Heat Treatment
141	Table NE-4622.1-1 Mandatory Requirements for Postweld Heat Treatment of Welds Table NE-4622.4(c)-1 Alternative Holding Temperatures and Times
142	Table NE-4622.7(b)-1 Exemptions to Mandatory PWHT
143	NE-4630 Intermediate Postweld Heat Treatment NE-4660 Heat Treatment of Electroslag Welds NE-4700 Mechanical Joints and Penetration Assemblies NE-4710 Bolting and Threading NE-4720 Bolting Flanged Joints NE-4730 Electrical and Mechanical Penetration Assemblies
144	NE-4740 Special Qualification Requirements for Electrical and Mechanical Penetration Assemblies Figure NE-4730-1 Penetration Assembly
145	NE-4800 Expansion Joints NE-4810 Bellows‐Type Expansion Joints Figure NE-4810(c)-1Bellows Attachment Welds
146	Article NE-5000 Examination NE-5100 General Requirements for Examination of Vessels NE-5110 Procedures, Qualifications, and Evaluation NE-5120 Time of Examination of Welds NE-5130 Examination of Weld Edge Preparation Surfaces
147	NE-5200 Required Examination of Welds NE-5210 Category A Welded Joints NE-5220 Category B Welded Joints NE-5230 Category C Welded Joints NE-5240 Category D Welded Joints NE-5260 Attachments NE-5270 Special Welds
148	NE-5280 Special Exceptions for Radiography NE-5300 Acceptance Standards NE-5320 Radiographic Acceptance Standards NE-5330 Ultrasonic Acceptance Standards NE-5340 Magnetic Particle Acceptance Standards
149	NE-5350 Liquid Penetrant Acceptance Standards NE-5500 Qualifications and Certification of Nondestructive Examination Personnel NE-5510 General Requirements NE-5520 Personnel Qualification, Certification, and Verification
150	NE-5530 Records NE-5540 Alternative Rules NE-5700 Examination Requirements for Expansion Joints NE-5710 Bellows Expansion Joints
152	Article NE-6000 Testing NE-6100 General Requirements NE-6110 Pressure Testing of Vessels and Appurtenances NE-6120 Preparation for Testing
153	NE-6200 Hydrostatic Tests NE-6210 Hydrostatic Test Procedure NE-6220 Hydrostatic Test Pressure Requirements NE-6230 Bellows Expansion Joints
154	NE-6300 Pneumatic Tests NE-6310 Pneumatic Testing Procedures NE-6320 Pneumatic Test Pressure Requirements NE-6400 Pressure Test Gages NE-6410 Requirements for Pressure Test Gages NE-6700 Containment Penetration NE-6710 Pressure Tests
156	Article NE-7000 Overpressure Protection NE-7100 General Requirements NE-7110 Scope NE-7120 Integrated Overpressure Protection NE-7130 Provisions for Checking Operation of Pressure Relief Devices NE-7140 Installation Provisions
157	NE-7150 Acceptable Pressure Relief Devices NE-7160 Unacceptable Relief Devices NE-7200 Overpressure Protection Report NE-7210 Responsibility for Report NE-7220 Content of Report
158	NE-7230 Certification of Report NE-7240 Review of Report After Installation NE-7250 Filing of Report NE-7300 Relieving Capacity Requirements NE-7310 Relieving Capacity of Pressure Relief Devices NE-7400 Set Pressures of Pressure Relief Devices NE-7410 Set Pressure Limitations for Testing Conditions NE-7500 Operating Design Requirements for Pressure Relief Valves NE-7510 Pressure Relief Valves
159	NE-7520 Power-Actuated Pressure Relief Valves NE-7700 Certification Requirements NE-7710 Responsibility for Certification of Pressure Relief Valves NE-7800 Marking, Stamping With Certification Mark, and Data Reports NE-7810 Pressure and Vacuum Relief Valves
160	Article NE-8000 Nameplates, Stamping With Certification Mark, and Reports NE-8100 Requirements
161	ENDNOTES

Published By	Publication Date	Number of Pages
ASME	2023	163


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Standard Title	ASME BPVC.III.1.NE-2023 Section III, Rules for Construction of Nuclear Facility Components, Division 1, Subsection NE, Class MC Components
Published Code	ASME
Publication Date	2023
Pages Count	163

ASME BPVC III 1 NE 2023

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