NB/T 20003.4-2021Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 4: Penetrant testing (English PDF)
核电厂核岛机械设备无损检测 第4部分：渗透检测
This is a limited preview
Buy now to download the full PDF (15 pages)
Need quotation for your management?
Get a formal quotation for NB/T 20003.4-2021 in 30 minutes.
Issued by
NEA
Level / Type
Industry · Recommended
Issue date
January 7, 2021
Implementation date
July 1, 2021
Scope
NB/T 20003.4-2021 is the English-translated version of 核电厂核岛机械设备无损检测 第4部分：渗透检测.
NB/T 20003.4-2021 is the Chinese standard "Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 4: Penetrant testing".
Its scope clause reads: This document specifies the technical requirements for penetrant testing of mechanical components in nuclear island of nuclear power plants.
This document is applicable to penetrant testing during the manufacturing and installation of plates, forgings, bars, castings, pipes and welded joints in mechanical components in nuclear island of nuclear power plants. Its clauses include terms and definitions; general requirements.
Found what you need?
Document preview — NB/T 20003.4-2021
National Standard of the People's Republic of China
- Replacing
- NB/T 20003.4-2010
Issued by: National Energy Administration of the People's Republic of China
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General requirements
- 5 Penetrant testing equipment and materials
- 6 Testing methods
- 7 Operation method of penetrant testing
- 8 Testing report
- Annex A (Informative) Schematic diagram for fluorescent and colour contrast penetrant testing process procedures
- Annex B (Normative) Verification techniques for penetrant testing at non-standard temperatures
1 Scope
This document specifies the technical requirements for penetrant testing of mechanical components in nuclear island of nuclear power plants.
This document is applicable to penetrant testing during the manufacturing and installation of plates, forgings, bars, castings, pipes and welded joints in mechanical components in nuclear island of nuclear power plants.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 5097 Non-destructive Testing - Penetrant testing and magnetic particle testing - Viewing conditions
GB 11533 Standard for logarithmic visual acuity charts
GB/T 12604.3 Non-destructive testing - Terminology - Terms used in penetrant testing
GB/T 18851.2 Non-destructive testing - Penetrant testing - Part 2: Testing of penetrant materials
GB/T 18851.3 Non-destructive testing - Penetrant testing - Part 3: Reference test blocks
GB/T 18851.4 Non-destructive testing - Penetrant testing - Part 4: Equipment
JB/T 6064 Non-destructive testing - General specification for penetrant blocks
NB/T 20003.1 Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 1: General requirements
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 12604.3 and NB/T 20003.1 apply.
3.1 relevant indication
trace indication formed by the penetrant bled out from the defects, which is also referred to as defect indication
3.2 non-relevant indication
indication caused by external factors unrelated to the defects
3.3 false indication
penetrant indication caused by penetrant contamination, testing environment, etc.
4 General requirements
4.1 Testing personnel
The testing personnel shall meet the requirements of NB/T 20003.1.
The testing personnel shall undergo vision examination annually. Their uncorrected or corrected vision shall not be less than 4.8, and the examination method shall meet the requirements of GB 11533.
The testing personnel shall undergo color vision examination annually, and such examination shall not reveal color blindness or color weakness.
4.2 Testing documents
The testing procedures, process cards or other testing documents shall meet the requirements of NB/T 20003.1. Penetrant testing shall be conducted following the effective testing procedures.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 16702.6-2025Design specification for mechanical components in nuclear island of pressurized water reactor nuclear power plants - Part 6: Reactor vessel internals
- NB/T 20482-2018Specification for design and construction of steel containment vessel of nuclear power plant of PWR
- NB/T 20005.12-2017Carbon steel and low alloy steel for pressurized water reactor nuclear power plants - Part 12: Seamless steel pipes for use in main steam systems, feedwater flow control systems, auxiliary feedwater systems and turbine bypass systems
- NB/T 20009.31-2017Welding material for pressurized water reactor nuclear power plants - Part 31: Stainless steel strips and fluxes for cladding of Safety Related components
- NB/T 20376-2016Installation and acceptance regulation for nuclear island main steam superpiping of PWR nuclear power plant
- NB/T 20393-2016Specification of pressurizer electric heater for pressurized water reactor nuclear power plants
Similar standards
Editions of NB/T 20003.4
| Edition | Title | Revision | Status |
|---|---|---|---|
| NB/T 20003.4-2021 | Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 4: Penetrant testing | current edition | Current |
| NB/T 20003.4-2010 | Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 4: Penetrant testing | previous edition | Superseded |
This page sells the current edition, NB/T 20003.4-2021. Earlier editions are listed for reference only.
How to Download NB/T 20003.4-2021
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
NB/T 20003.5-2021 — Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 5: Magnetic particle testing
NB/T 20003.3-2010 — Non - Destructive testing for mechanical components in nuclear island of nuclear power plants - Part 3: Radiographic testing
NB/T 20003.6-2021 — Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 6: Eddy current testing of tubular products
Secure payment via Stripe
Payments accepted
NB/T 20003.4-2021
$240.00