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GB/T 40623-2021Marine anti-static raised floor (English PDF)

船用防静电升高地板

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40623-2021 is the English-translated version of 船用防静电升高地板.

GB/T 40623-2021 is the Chinese national standard for anti-static raised floors installed on ships. It covers the classification, structure and marking of these floors, their technical requirements and test methods, the inspection rules, and marking, packaging, transport and storage.

It defines the raised floor as a floor built from a frame, removable panels and an anti-static veneer, and introduces the system resistance measured from the upper surface of the floor down to the support base.

Materials and tests are tied to national standards for structural steel, die-cast aluminium alloy and anti-static plywood and to the IMO fire test procedures for smoke, toxicity and surface flammability.

It applies to the design, manufacture and acceptance of such floors on ships and marine engineering structures. It was issued on 11 October 2021 and has applied since 1 May 2022.

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Document preview — GB/T 40623-2021

National Standard of the People's Republic of China

ICS
47.020.50
Classification
U 25

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the classification, structure and marking, technical requirements, test methods, inspection rules, marking and packaging of marine anti-static raised floors Transportation and storage.

This standard is applicable to the design, manufacture and acceptance of anti-static raised floors used in various ships and marine engineering.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 191 Packaging, storage and transportation pictorial signs

GB/T 700 carbon structural steel

GB/T 702 Hot-rolled steel bar size, shape, weight and allowable deviation

GB/T 709 Hot-rolled steel plate and steel strip size, shape, weight and allowable deviation

GB/T 6728 Cold-formed hollow steel for structure

GB/T 9867 Determination of wear resistance of vulcanized rubber or thermoplastic rubber (rotating roller abrasion machine method)

GB/T 15115 Die-cast aluminum alloy

GB/T 17395 Seamless steel pipe size, shape, weight and allowable deviation

CB/T 3951 Marine flame retardant rubber floor

SJ/T 11236 General Technical Specification for Anti-static Plywood

International Maritime Organization (IMO).2010 International Fire Test Procedure Application Rules Part 2: Smoke and Toxicity Test; Part 5 Sub. Surface material flammability test (surface material and deck base layer dressing test)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Anti-static raised floor

Floor constructed by floor frame, detachable floor and anti-static veneer.

Note: Hereinafter referred to as "raised floor".

3.2 Raised floor system resistance

The sum of the resistance from the upper surface of the raised floor to the floor support base.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.

Referenced standards

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GB/T 40623-2021

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