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
9	LIST OF SECTIONS
10	INTERPRETATIONS CODE CASES
11	FOREWORD
13	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
14	SUBMITTAL OF TECHNICAL INQUIRIES TO THE BOILER AND PRESSURE VESSEL STANDARDS COMMITTEES
17	PERSONNEL
38	ORGANIZATION OF SECTION III 1 GENERAL
39	2 SUBSECTIONS 3 ARTICLES 4 SUBARTICLES 5 SUBSUBARTICLES 6 PARAGRAPHS 7 SUBPARAGRAPHS 8 SUBSUBPARAGRAPHS
40	9 REFERENCES
42	SUMMARY OF CHANGES
43	LIST OF CHANGES IN RECORD NUMBER ORDER
44	CROSS-REFERENCING AND STYLISTIC CHANGES IN THE BOILER AND PRESSURE VESSEL CODE
45	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
47	Figures Figure NE-1110-1 Typical Containment Penetrations
48	Figure NE-1131-1 Some Typical Jurisdictional Boundaries for Welded Connections Class MC Containment Vessels
49	Figure NE-1132.2-1 Attachments in the Containment Vessel Support Load Path That Do Not Perform a Pressure-Retaining Function
50	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)
51	Figure NE-1132.2-3 Attachments That Perform a Pressure-Retaining Function
52	Article NE-2000 Material NE-2100 General Requirements for Material NE-2110 Scope of Principal Terms Employed NE-2120 Pressure-Retaining Material
53	Tables Table NE-2121(a)-1 Material Specifications and Grades Permitted for Class MC Construction
54	Table NE-2121(a)-2 Permitted Bolting Material Specifications
56	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
57	NE-2220 Procedure for Obtaining Test Coupons and Specimens for Quenched and Tempered Material
59	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)
60	NE-2320 Impact Test Procedures NE-2330 Test Requirements and Acceptance Standards
61	NE-2340 Number of Impact Tests Required Table NE-2332.1-1 Required Cv Lateral Expansion Values for Pressure-Retaining Material Other Than Bolting
62	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
63	NE-2350 Retests NE-2360 Calibration of Instruments and Equipment NE-2400 Welding Material NE-2410 General Requirements
64	NE-2420 Required Tests NE-2430 Weld Metal Tests
66	Table NE-2432.1-1 Sampling of Welding Materials for Chemical Analysis Table NE-2432.2-1 Welding Material Chemical Analysis
67	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
68	NE-2540 Examination and Repair of Forgings and Bars
69	NE-2550 Examination and Repair of Seamless and Welded (Without Filler Metal) Tubular Products and Fittings
71	NE-2560 Examination and Repair of Tubular Products and Fittings Welded With Filler Metal
72	NE-2570 Examination and Repair of Statically and Centrifugally Cast Products Table NE-2571-1 Required Examinations
74	Figure NE-2575.2-1 Typical Pressure-Retaining Parts of Vessels
75	NE-2580 Examination of Bolts, Studs, and Nuts
76	NE-2600 Material Organizations’ Quality System Programs NE-2610 Documentation and Maintenance of Quality System Programs NE-2700 Dimensional Standards NE-2710 Standards and Specifications
77	Article NE-3000 Design NE-3100 General Design NE-3110 Loading Criteria
78	NE-3120 Special Considerations
79	NE-3130 General Design Rules
83	NE-3200 Design by Analysis NE-3210 Design Criteria
85	Figure NE-3213.10-1 Example of Acceptable Local Primary Membrane Stress Due to Pressure
88	NE-3220 Stress Intensity and Buckling Stress Values for Other Than Bolts
89	Table NE-3217-1 Classification of Stress Intensity in Vessels for Some Typical Cases
92	Table NE-3221-1 Summary of Stress Intensity Limits
93	Figure NE-3221-1 Stress Categories and Limits of Stress Intensity for Design Conditions
94	Figure NE-3221-2 Stress Categories and Limits of Stress Intensity for Level A and B Service Limits; and for Level C Service Limits Where the Structure Is Not Integral and Continuous
95	Figure NE-3221-3Stress Categories and Limits of Stress Intensity for Level C Service Limits Where the Structure Is Integral and Continuous; and for Level D Service Limits Where the Structure Is Not Integral and Continuous, and at Partial Penetration Welds
96	Figure NE-3221-4 Stress Categories and Limits of Stress Intensity for Level D Service Limits Where the Structure Is Integral and Continuous
102	NE-3230 Stress Limits for Bolts Table NE-3228.3(b)-1 Values of m, n, and Tmax for Various Classes of Permitted Materials
103	NE-3300 Design by Formula NE-3310 Design Criteria NE-3320 Design Considerations
104	Figure NE-3324.2-1 Principal Dimensions of Typical Heads Table NE-3324.2-1 Values of Factor K
107	Table NE-3324.8(b)-1 Values of Factor M
108	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
109	Figure NE-3324.11(a)(6)-1 Large Head Openings: Reverse Curve and Conical Shell Reducer Sections
110	Figure NE-3325-1 Some Acceptable Types of Unstayed Flat Heads and Covers
113	Figure NE-3326.1-1 Spherically Dished Covers With Bolting Flanges
115	NE-3330 Openings and Reinforcement
116	Figure NE-3332.2-1 Chart for Determining Values of F
117	Table NE-3332.2-1 Values of Spherical Radius Factor K1
118	Figure NE-3334.2-1 Nozzle Dimensions
119	Figure NE-3335.1-1 Arrangement of Multiple Openings
121	Figure NE-3338.2-1 Direction of Stress Components Table NE-3338.2(c)-1 Stress Indices for Nozzles
122	NE-3350 Design of Welded Connections Figure NE-3351-1 Welded Joint Locations Typical of Categories A, B, C, and D
123	Figure NE-3352-1 Typical Butt Joints
126	Figure NE-3358.1(a)-1 Heads Attached to Shells
128	NE-3360 Special Vessel Requirements Figure NE-3361-1 Category A and B Joints Between Sections of Unequal Thickness
131	NE-3700 Electrical and Mechanical Penetration Assemblies NE-3720 Design Rules
132	Article NE-4000 Fabrication and Installation NE-4100 General Requirements NE-4110 Introduction NE-4120 Certification of Material and Fabrication by Component Certificate Holder
133	NE-4130 Repair of Material NE-4200 Forming, Fitting, and Aligning NE-4210 Cutting, Forming, and Bending
134	NE-4220 Forming Tolerances Figure NE-4221.1-1 Maximum Difference in Cross‐Sectional Diameters
135	Figure NE-4221.2-1 Maximum Permissible Deviation e From a True Circular Form
136	Figure NE-4221.2-2 Maximum Arc Length for Determining Plus or Minus Deviation
137	NE-4230 Fitting and Aligning NE-4240 Requirements for Weld Joints Table NE-4232-1 Maximum Allowable Offset in Final Welded Joints
138	Figure NE-4243-1 Attachment of Pressure Parts to Plates to Form a Corner Joint
139	Figure NE-4243-2 Acceptable Types of Full Penetration Weld Details for Category C Joints
140	Figure NE-4243.1-1 Typical Flat Heads
141	Figure NE-4244(a)-1 Nozzles Attached by Full Penetration Butt Welds
142	Figure NE-4244(b)-1 Nozzles Attached by Full Penetration Corner Welds
143	NE-4300 Welding Qualifications NE-4310 General Requirements NE-4320 Welding Qualifications, Records, and Identifying Stamps
144	Figure NE-4244(c)-1 Deposited Weld Metal for Openings and Nozzles
145	Figure NE-4244(d)-1 Acceptable Types of Welded Nozzles Using Partial Penetration Welds
146	Figure NE-4244(d)-2 Partial Penetration Weld Connections
147	Figure NE-4244(d)-3 Partial Penetration Weld Connections for Coaxial Cylinders Figure NE-4244(e)-1 Acceptable Types of Fittings With Internal Threads
148	Figure NE-4244(e)-2 Acceptable Types of Small Fittings
149	Figure NE-4244(f)-1 Tube Connections
150	NE-4330 General Requirements for Welding Procedure Qualification Tests
152	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
154	Figure NE-4427-1 Fillet and Socket Weld Details and Dimensions
155	NE-4430 Welding of Attachments
156	NE-4450 Repair of Weld Metal Defects Figure NE-4437(b)-1 Attachment of Stiffening Rings to Shell
157	NE-4600 Heat Treatment NE-4610 Welding Preheat Requirements NE-4620 Postweld Heat Treatment
158	Table NE-4622.1-1 Mandatory Requirements for Postweld Heat Treatment (PWHT) of Welds Table NE-4622.4(c)-1 Alternative Holding Temperatures and Times
159	Table NE-4622.7(b)-1Exemptions to Mandatory PWHT
160	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
161	NE-4740 Special Qualification Requirements for Electrical and Mechanical Penetration Assemblies Figure NE-4730-1 Penetration Assembly
162	NE-4800 Expansion Joints NE-4810 Bellows‐Type Expansion Joints Figure NE-4810(c)-1Bellows Attachment Welds
163	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
164	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
165	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
166	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
167	NE-5530 Records NE-5700 Examination Requirements for Expansion Joints NE-5710 Bellows Expansion Joints
169	Article NE-6000 Testing NE-6100 General Requirements NE-6110 Pressure Testing of Vessels and Appurtenances NE-6120 Preparation for Testing
170	NE-6200 Hydrostatic Tests NE-6210 Hydrostatic Test Procedure NE-6220 Hydrostatic Test Pressure Requirements NE-6230 Bellows Expansion Joints NE-6300 Pneumatic Tests NE-6310 Pneumatic Testing Procedures
171	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
173	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
174	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
175	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
176	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
177	Article NE-8000 Nameplates, Stamping With Certification Mark, and Reports NE-8100 Requirements
178	ENDNOTES

Published By	Publication Date	Number of Pages
ASME	2021	179


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Standard Title	ASME BPVC – III – 1 – NE -2021 BPVC Section III, Rules for Construction of Nuclear Facility Components, Division 1, Subsection NE, Class MC Components
Published Code	ASME
Publication Date	2021
Pages Count	179

ASME BPVC III 1 NE 2021

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