27 MAY

List of British Standards—continued

New Issues
Title
BS 2011: — Methods for the environmental testing of electronic components and electronic equipment—
2011: Part 2: Test Kb: 1970 Tests. Industrial atmosphere test for contacts and connections. (A4 size)
BS 2604: — Resin-bonded wood chipboard—
2604: Part 2: 1970 Metric units.
BS 4140: — Methods of test for aluminium oxide—
4140: Addendum No. 1: 1970.
BS 4210: — 35 mm microcopying of engineering drawings and associated data—
4210: Part 2: Photographic requirements. Section 2.1: Requirements for silver film.
BS 4612: 1970 An identification code for synchronised 6.25 mm audio tape used in conjunction with motion picture film.
BS 4650: 1970 Determination of mesh breaking load of netting for fishing.
BS 4654: 1970 Hooks for lifting freight containers of up to 30 tonnes.
BS 4655: 1970 Method for the determination of pile loss of woven cut-pile upholstery fabrics due to abrasion by the underlying materials.
BS 4656: — The accuracy of machine tools and methods of test—
4656: Part 1: 1970 General purpose parallel lathes. (A4 size)
BS 4657: 1970 Method for determining the resolution obtained in microcopying.
BS 4658: 1970 Methods of obtaining laboratory test specimens of textile materials for chemical testing.
BS 4662: 1970 Boxes for the enclosure of electrical accessories.
BS 9015: 1970 Counter and indicator tubes of assessed quality: generic data and methods of test. (A4 size)
BS 9016: 1970 Rules for the preparation of detail specifications for indicator tubes of assessed quality. (A4 size)
BS 9021: 1970 Rules for the preparation of detail specifications for corona stabiliser tubes of assessed quality. (A4 size)
BS 9025: 1970 Specification for travelling-wave amplifier tubes of assessed quality: generic data and methods of test. (A4 size)
BS 9026: 1970 Rules for the preparation of detail specifications for low noise signal amplifier tubes of assessed quality with integral permanent magnet focussing. (A4 size)
BS 9040: 1970 Specification for gas-filled microwave switching tubes of assessed quality: generic data and methods of test. (A4 size)
BS 9052: 1970 Rules for the preparation of detail specifications for general purpose professional instrument cathode ray tubes of assessed quality. (A4 size)
BS 9401: 1970 Rules for the preparation of detail specifications for integrated circuits of assessed quality TTL digital gate circuits. General application category. (A4 size)

New codes of practice
BS CP 3: — Code of basic data for the design of buildings—
CP 3: Chapter II: 1970 Thermal insulation in relation to the control of environment.
BS CP 144: — Roof coverings—
C.P. 144: Part 3: 1970 Built up bitumen felt.
C.P. 144: Part 4: 1970 Mastic asphalt (Metric version of part 2.)
BS CP 3003: — Lining of vessels and equipment for chemical processes—
CP 3003: Part 10: 1970 Brick and tile.

New automobile standards
BS AU 30a: 1970 Standard automatic roller-type coupling for semi-trailers of 7 tons to 14¼ tons laden weight. (A4 size)
BS AU 146a: 1970 Standard automatic roller-type coupling for semi-trailers not exceeding 7½ tons laden weight. (A4 size)

Revised standards
BS 227: 1970 H-section steel arches for use in mines.
BS 873: — The construction of road traffic signs and internally illuminated bollards—
873: Part 1: 1970 General traffic signs.
BS 1090: 1970 Flameproof hand-held electric drilling machines primarily for use in mines.
BS 1348: 1970 Kitchen measuring spoons, measures and jugs.
BS 1490: 1970 Aluminium and aluminium alloy ingots and castings.
BS 1495: — Agricultural tractor details for light and medium tractors—
1495: Part 1: 1970 Imperial units.
BS 1622: 1970 Winter gritters for roads.

THE NEW ZEALAND GAZETTE

List of British Standards—continued
Revised standards
BS 2099: — Castors—
2099: Part 1: 1970 Castors for hospital equipment for ward and theatre use.
BS 2776: — Paper covered copper conductors—
2776: Part 2: 1970 Rectangular conductors.
BS 3546: 1970 Coated fabrics for protective clothing.
BS 3763: 1970 The International System of units (SI). (A4 size)
BS 3791: 1970 Clothing for protection against intense heat for short periods.
BS 3846: 1970 Methods for the calibration and grading of extensometers for testing of metals.

Amendments
Ref. No.
BS 328: — Twist drills and combined drills and countersinks—
328: Part 1: 1959 Twist drills. Amendment slip No. 3
BS 493: 1967 Airbricks and gratings for wall ventilation. Amendment slip No. 1
BS 747: 1968 Roofing felts. Amendment slip No. 2
BS 1016: — Methods for the analysis and testing of coal and coke—
1016: Part 11: 1969 Forms of sulphur in coal. Amendment slip No. 1
1016: Part 13: 1969 Tests special to coke. Amendment slip No. 2
BS 1130: 1943 Schedule of cast iron drain fittings, spigot and socket type for use with drain pipes to BS 437: 1933. Amendment slip No. 1
BS 1230: 1955 Gypsum plasterboard. Amendment slip No. 4
BS 1503: 1969 Steels for fired and unfired pressure vessels: forgings. Amendment slip No. 1
BS 1722: — Fences—
1722: Part 10: 1963 Anti-intruder chain link fences. Amendment slip No. 3
BS 2604: 1963 Resin-bonded wood chipboard. Amendment slip No. 6
BS 3456: — The testing and approval of household electrical appliances—
3456: Part B: motor-operated appliances. Section B10: 1962 Electric clothes washing machines. Amendment slip No. 3
BS 3640: 1963 Wire braid reinforced rubber hose, type 1, the hose assemblies fitted with end couplings. Amendment slip No. 4
BS 4023: — Flexible cellular PVC sheeting—
4023: Part 1: 1966 Physically blown material. Amendment slip No. 2
4023: Part 2: 1967 Chemically blown material. Amendment slip No. 2
BS 4161: — Gas meters—
4161: Part 3: 1968 Unit construction meter of 6 cubic metres per hour rating. Amendment slip No. 2
BS 4221: 1967 Spiral/braided wire reinforced rubber hose and hose assemblies fitted with end couplings. Amendment slip No. 1
BS 4360: — Weldable structural steels—
4360: Part 1: 1968 Inch units. Amendment slip No. 2
4360: Part 2: 1969 Metric units. Amendment slip No. 1
BS 9002: Issue 1: 1969 Qualified parts list for electronic parts of assessed quality (including list of approved firms). Amendment Notice No. 13
BS 9070: — Fixed capacitors of assessed quality: generic data and methods of test—
Section 1: 1969 Principles and mandatory procedures.
Section 2: 1969 General rules for drafting detail specifications. Amendment slip No. 2
Section 3: 1970 Tantalum electrolytic capacitors. Amendment slip No. 1
BS 9070-N-001: Issue 1 Detail specification for fixed solid tantalum electrolytic capacitors, styles ClHAA (insulated) and ClHBA (uninsulated): General application. Amendment slip No. 1
BS 9114: 1970 Rules for the preparation of detail specifications for fixed wirewound resistors (Type 2) of assessed quality. Amendment slip No. 2
BS 9300: 1969 Semiconductor devices of assessed quality: generic data and methods of test. Amendment Sheet No. 1