OEM RCC-M Section II – Material Specifications For The Procurement, Manufacturing, And Inspection Of Materials Used In Pressurized Water Reactor (PWR) Nuclear Components Supplier, Factory

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OEM RCC-M Section II – Material Specifications For The Procurement, Manufacturing, And Inspection Of Materials Used In Pressurized Water Reactor (PWR) Nuclear Components Supplier, Factory

The RCC-M (Design and Construction Rules for Mechanical Components of PWR Nuclear Islands) is a French nuclear code published by AFCEN (Association FranÃ§aise pour les rÃ¨gles de Conception et de Construction des MatÃ©riels des ChaudiÃ¨res Electro-NuclÃ©aires). Section II of RCC-M covers Material Specifications and is crucial for the procurement, manufacturing, and inspection of materials used in Pressurized Water Reactor (PWR) nuclear components.

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Product Description

Ordering Information

Specifies requirements for material procurement, including:

• Material designation (e.g., grades, product forms)
• Applicable standards (e.g., NF, EN, ASTM equivalents)
• Delivery conditions (heat treatment, surface finish, dimensions)
• Supplier documentation (material certificates, test reports)
• Marking and traceability requirements

Material Codes & Classification

Covers ferrous and non-ferrous materials used in nuclear components:

• Carbon & alloy steels (e.g., P265GH, 16MND5)
• Stainless steels (e.g., Z2CN18-10, Z2CND17-12)
• Nickel-based alloys (e.g., NC15Fe, NC30Fe)
• Other materials (e.g., aluminum, copper alloys)

Material codification follows AFCEN’s classification system (e.g., Mxxxx for base metals, Sxxxx for filler metals).

Chemical Composition & Mechanical Properties

Defines acceptable ranges for:

• Chemical elements (C, Mn, Si, S, P, Cr, Ni, Mo, etc.)
• Mechanical properties (tensile strength, yield strength, elongation, impact toughness)
• Heat treatment conditions (annealing, quenching, tempering)

Inspection & Testing Requirements

Mandatory tests depending on material class:

• Destructive testing (tensile, impact, hardness, bend tests)
• Non-destructive testing (NDT) (ultrasonic, radiographic, liquid penetrant, magnetic particle testing)
• Metallurgical examinations (grain size, microstructure)

Frequency of testing (batch testing, sample size)

Acceptance criteria (based on RCC-M and referenced standards)

Supplementary Requirements

Additional tests for specific applications:

• Corrosion resistance tests (intergranular, pitting)
• High-temperature properties (creep resistance)
• Special NDT requirements (phased array UT, TOFD)

Certification & Documentation

Material certificates must comply with EN 10204 (Type 3.1 or 3.2)

Traceability records (heat number, melting process, manufacturing route)

Key Updates in RCC-M 2023

Alignment with EU regulations & international standards (e.g., harmonization with ASME BPVC)

Inclusion of advanced materials (e.g., enhanced stainless steels for Gen III/IV reactors)

Revised NDT acceptance criteria (more stringent defect evaluation)

Updated annexures for welding consumables (filler metal specifications)

RCC-M Section II provides detailed material codes for metals used in nuclear components, classified by type. Below is a summarized list of key material codes from the RCC-M 2023 edition.

1. Carbon and Low-Alloy Steels

Base Metals:
- M1901 – Carbon steel plates (e.g., P265GH, P295GH)
- M1902 – Carbon steel forgings (e.g., 20MnMoNi5-5)
- M1903 – Carbon steel tubes (e.g., TU42C, TU48C)
- M2131 – Manganese-molybdenum steel plates (e.g., 16MND5, 18MND5)
- M2132 – Manganese-molybdenum-nickel steel forgings (e.g., 16MND5, 20MnMoNi5-5)

Welding Consumables:
- SFA-5.1 – Carbon steel electrodes (e.g., E7018)
- SFA-5.5 – Low-alloy steel electrodes (e.g., E9018-G)

2. Stainless Steels

Austenitic Stainless Steels:
- M3201 – 18%Cr-10%Ni plates (e.g., Z2CN18-10, 304L)
- M3202 – 18%Cr-10%Ni forgings (e.g., Z2CN18-10)
- M3204 – 17%Cr-12%Ni-2%Mo plates (e.g., Z2CND17-12, 316L)
- M3301 – Stabilized grades (e.g., Z6CNT18-10, 321)

Martensitic & Ferritic Stainless Steels:
- M3401 – 12%Cr steels (e.g., Z12CN13, 410)

Welding Consumables:
- SFA-5.4 – Stainless steel electrodes (e.g., E308L, E316L)
- SFA-5.9 – Stainless steel filler wires (e.g., ER308LSi)

3. Nickel-Based Alloys

Base Metals:
- M4101 – Inconel 600 (NC15Fe)
- M4102 – Inconel 690 (NC30Fe)
- M4104 – Inconel 718 (NC19FeNb)

Welding Consumables:
- SFA-5.11 – Nickel alloy electrodes (e.g., ENiCrFe-3)
- SFA-5.14 – Nickel alloy filler wires (e.g., ERNiCr-3)

4. Aluminum & Copper Alloys

- M6101 – Aluminum alloys (e.g., 5083, 6061)
- M6201 – Copper-nickel alloys (e.g., CuNi30Mn1Fe)

5. Special Materials

- M5101 – Zirconium alloys (for fuel cladding)
- M5201 – Titanium alloys (for specific components)

Frequently Asked Questions

What is the purpose of RCC-M Section II?

RCC-M Section II provides detailed technical specifications for the procurement, manufacturing, and inspection of materials used in Pressurized Water Reactor (PWR) nuclear components.

Which material types are covered under RCC-M codification?

It covers carbon and low-alloy steels, austenitic stainless steels, martensitic and ferritic stainless steels, nickel-based alloys, and special materials like zirconium and titanium.

What certification standard is required for these materials?

All material certificates must comply with EN 10204, specifically Type 3.1 or 3.2, ensuring full traceability and verified test results.

What kind of testing is mandatory for RCC-M compliance?

Compliance requires both destructive testing (tensile, impact, hardness) and non-destructive testing (ultrasonic, radiographic, liquid penetrant) depending on the material class.

What are the significant updates in the 2023 edition?

The 2023 edition includes alignment with EU regulations, enhanced stainless steel grades for Gen III/IV reactors, and more stringent NDT acceptance criteria.

How are welding consumables classified?

Welding consumables are classified using the "Sxxxx" codification system, following standards like SFA-5.1 for carbon steel and SFA-5.4 for stainless steel electrodes.