DEFSTAN 02-872(PT4)/1(2002) : 2002

Name: DEFSTAN 02-872(PT4)/1(2002) : 2002
Brand: DEFSTAN

Superseded

View Superseded by

PROCEDURES FOR FIRST LEVEL NICKEL ALUMINIUM BRONZE CASTINGS - PART 4: INSPECTIONS OUTSIDE OF LONG OVERHAUL PERIODS

Superseded date

11-25-2011

Published date

01-12-2013

Publisher

UK Ministry of Defence Standards

TITLE PAGE
SCOPE
FOREWORD
Sponsorship
Conditions of Release
Categories of Naval Defence Standard
Related Documents
Health and Safety
CONTENTS
SECTION 1 - GENERAL REQUIREMENTS
            1.1 NABWETLIFE Code
            1.2 Selection of Castings for Inspection
            1.3 Identification
            1.4 Pre-requisites
SECTION 2 - CLEANING OF CASTINGS
            2.1 General
            2.2 Shore Based Cleaning and General Etching
                2.2.1 Cleaning Method 1
                2.2.2 Cleaning Method 2
                2.2.3 General Etching Method
            2.3 In Situ Cleaning
                2.3.1 In Situ Cleaning Method
SECTION 3 - SHORE BASED EXAMINATION FOR CORROSION
            3.1 General
            3.2 Visual Examination
            3.3 Thickness Check
            3.4 Detection of Corrosion
                3.4.1 Detailed Etching Method
                3.4.2 Ultrasonic Corrosion Detection
            3.5 Removal of Corrosion
            3.6 Post Dressing Thickness Gauging
            3.7 Recording of Examination Results
            3.8 Corrosion Limits
SECTION 4 - INSPECTION ACCEPTANCE CRITERIA
            4.1 Cleaning
            4.2 Removal of Corrosion
            4.3 Wall Thickness
            4.4 Re-installation
            4.5 Re-Stamping
            4.6 Certification
            4.7 Records
SECTION 5 - IN SITU EXAMINATIONS
            5.1 In Situ Cleaning
            5.2 Ultrasonic Thickness Checks
            5.3 In Situ Etching Method
            5.4 Ultrasonic Corrosion Measurements
            5.5 Records
            5.6 Acceptance Criteria
ANNEX A - RELATED DOCUMENTS
ANNEX B - DEFINITIONS AND ABBREVIATIONS
ANNEX C - PROCUREMENT CHECK LIST
ANNEX D - CASTING RECORD OF REVALIDATION INSPECTION
ANNEX E - REVALIDATION CERTIFICATE FOR NAB CASTINGS
ANNEX F - CHECK LIST FOR DOCUMENTS TO BE INCLUDED
          IN THE QA PACK FOR REVALIDATED CASTINGS
ALPHABETICAL INDEX

Defines in-service inspections carried out outside of the Long Overhaul Period. This process is used to gauge the overall health of all Nickel Aluminium Bronze (NAB) contained in the NAB Register of a submarine by detailed examination of a sample of NAB castings.

DocumentType	Standard
PublisherName	UK Ministry of Defence Standards
Status	Superseded
SupersededBy	DEFSTAN 02-872(PT3)/2(2011) : 2011

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