BS 9220:1971

Co-operating organizations
Foreword
Specification
Section 1. Principles and mandatory procedures
1.1 General matters
1.1.1 Scope
1.1.2 Related documents
1.1.3 Terminology
1.1.4 Letter symbols, signs and abbreviations
1.1.5 Graphical symbols
1.1.6 Marking of the part and package
1.1.7 Eligibility for qualification approval
1.1.8 Structurally similar parts
1.1.9 Delayed delivery
1.1.10 Supplementary procedure for qualification
         approval
1.1.11 Certified test records (CTRs)
1.1.12 Standard ratings and characteristics
1.1.13 Unchecked parameters
1.1.14 Procedure to be followed in the event of
         failures at Group D inspection
1.1.15 Ordering information
1.1.16 Release prior to completion of Group B tests
1.1.17 Protection
1.2 Test procedures
1.2.1 Measurement conditions
1.2.2 Visual inspection
1.2.3 Dimensioning and gauging procedures
1.2.3.1 Dimensions
1.2.3.2 Eccentricity
1.2.3.3 Bow
1.2.3.4 Twist
1.2.3.5 Shape of cross section
1.2.3.6 Ellipticity (of circular waveguide)
1.2.4 Electrical test procedures
1.2.5 Mechanical test procedures
1.2.6 Environmental test procedures
1.2.7 Endurance test procedures
Section 2. Rules for the preparation of detail
            specifications
2.1 Basic information
2.1.1 Originator of the specification
2.1.2 Specification number
2.1.3 Description of the part and intended
         application
2.1.4 Outline drawing
2.1.5 Ratings (including limiting conditions of use)
2.1.6 Characteristics
2.1.7 Related documents
2.1.8 Additional information
2.1.9 Marking
2.2 Inspection requirements
2.2.1 Group A inspection
2.2.2 Group B inspection
2.2.3 Group C inspection
2.2.4 Group D inspection
2.3 Certified test records
2.3.1 General
2.3.2 Attributes information
2.3.3 Measurements information
Appendices
A Example of certified test record
B Example of a detail specification

Terminology and test methods relating to: (i) ordinary rectangular waveguide; (ii) rectangular waveguide with circular outside cross section; (iii) medium flat waveguide; (iv) flat rectangular waveguide; (v) circular waveguide; (vi) ridged waveguide; (vii) square waveguide; and rules for preparation of detail specifications.

This British Standard gives details of test requirements and other general information relating to rigid waveguide tubing of assessed quality of the following types:

1. Ordinary rectangular waveguide.
2. Rectangular waveguide with circular outside cross section.
3. Medium flat waveguide.
4. Flat rectangular waveguide.
5. Circular waveguide.
6. Ridged waveguide.
7. Square waveguide.

It is intended to be read in conjunction with BS 9000 and with the relevant detail specifications which give the dimensions, ratings and test requirements for specific types.

Rules governing the contents and presentation of the detail specifications, for use by BSI technical panels or parts manufacturers, are given in Section 2 and the appendices to this standard.