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GB/T 41394-2022Functional safety requirements of overfill prevention systems on explosive dangerous chemical (English PDF)

爆炸危险化学品储罐防溢系统功能安全要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 15, 2022

Implementation date

November 1, 2022

Scope

GB/T 41394-2022 is the English-translated version of 爆炸危险化学品储罐防溢系统功能安全要求.

GB/T 41394-2022 sets the functional safety requirements of the overfill prevention system of a hazardous chemical storage tank. It fixes what such a system has to achieve and how its safety functions are specified, designed, verified and maintained, so that a tank cannot be filled beyond its safe level.

It applies to above-ground fixed atmospheric tanks above 5 m³ holding petroleum and other hazardous chemicals, smaller tanks may follow it for reference, and it does not apply to LPG and LNG tanks, dedicated buffer tanks, engine fuel tanks or heating tanks.

Tank farm operators, design institutes and safety assessors use it. Issued on 15 April 2022, it has applied since 1 November 2022.

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Document preview — GB/T 41394-2022

National Standard of the People's Republic of China

ICS: 25.040
Classification: N 10

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

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Abbreviations
5 General requirements for tank overflow prevention systems
5.1 General requirements
5.2 Storage tank monitoring method and classification of overfill prevention system instrumentation configuration
5.3 Full life cycle functional safety requirements of tank overflow prevention system
6 Safety management requirements for storage tank overflow prevention
6.1 General requirements
6.2 Focus on level management and periodic review requirements
6.3 Functional Safety Assessment Requirements for Tank Overfill Prevention Systems
6.4 Requirements for the safety management system for tank overflow prevention
6.5 Requirements for safety regulations for tank overflow prevention operation
6.6 Requirements for emergency plan for tank overflow accident
7 Tank overflow risk assessment
7.1 General requirements
7.2 Risk Assessment Implementation Requirements
8 Allocation of safety requirements for tank overflow prevention systems
8.1 General requirements
8.2 Security Requirements Assignment Implementation Requirements
9 Design requirements for tank overflow prevention system
9.1 General requirements
9.2 Level-focused design
9.3 Classification and composition of tank overflow prevention systems
9.4 Functional Safety Design of AOPS
9.5 Safety protection design of tank overflow prevention system
10 Installation Requirements for Tank Overfill Prevention System
11 Requirements for safety confirmation before the operation of the storage tank overflow prevention system
11.1 Installation Confirmation Requirements
11.2 Hardware Validation Requirements
11.3 Functional Validation Requirements
11.4 Application Confirmation Requirements
11.5 Requirements for Operational Confirmation
12 Acceptance Requirements for Tank Overfill Prevention Systems
13 Requirements for Inspection, Testing and Maintenance of Tank Overfill Prevention Systems
13.1 General requirements
13.2 Technical requirements
14 Change Management Requirements for Tank Overfill Prevention Systems
14.1 General requirements
14.2 Change Management Requirements
14.3 Changed Documentation Requirements
15 Decommissioning Requirements for Tank Overfill Prevention Systems
Appendix A (Informative) Installation Requirements for Liquid Level Detection Instruments
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

Introduction

In oil reservoir areas, chemical parks and hazardous chemical related operating units, hazardous chemical storage tanks are a major source of danger.

It may lead to fire and explosion, resulting in heavy casualties and economic losses, and the risk is extremely high.

The necessary means of storage tank overflow risk, in order to protect the life and property safety of the people, the full life cycle functional safety of the storage tank overflow prevention system should be realized. Guarantee is important.

This document is aimed at safety management, risk assessment, safety requirement assignment, design, safety Safety-related requirements and technical methods are put forward for installation, commissioning, evaluation, acceptance, maintenance and decommissioning activities, so as to provide safety-related requirements and technical methods for the entire life cycle of the storage tank overflow prevention system.

The participants at the stage provide work basis to improve the risk management and control ability and intrinsic safety level of my country's hazardous chemical storage links.

The purpose of this document is to guide and standardize the protection of fixed petroleum and other hazardous chemicals liquid storage tanks in petroleum and hazardous chemicals related fields. Full-lifecycle functional safety activities for overflow systems. Explosion-hazardous chemical storage tank overflow prevention system Functional Safety Requirements

1 Scope

This document specifies the functional safety requirements for the installation of tank overflow prevention systems for hazardous chemical storage tanks.

This document is applicable to above-ground fixed atmospheric pressure storage tanks for petroleum and other hazardous chemicals above 5m3.5m3 and below fixed Liquid atmospheric storage tanks can be implemented by reference.

This document does not apply to LPG/LNG tanks, dedicated buffer tanks, engine fuel tanks, heating tanks, scavengers only from wheeled Tanks for tank cars (such as tank cars or railroad tank cars).

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 20438.2-2017 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems Part 2: Electrical/Electronic/ Requirements for programmable electronic safety-related systems

GB/T 20438.3-2017 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems Part 3: Software Requirements

GB/T 21109.1-2007 Functional Safety of Safety Instrumented Systems in the Process Industry Part 1: Framework, Definition, System, Hardware software and software requirements

GB/T 29639 Guidelines for the preparation of emergency plans for production safety accidents in production and business units

GB 50093 Code for Construction and Quality Acceptance of Automation Instrumentation Engineering

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Alarm

Audible and/or visual indications to operators of equipment failures, process deviations, or other abnormal conditions requiring prompt response.

3.2 Alert alert

When the operator's pre-defined operating conditions have reached a certain value, using sound and/or light to prompt the operator.

NOTE: The purpose of the alert is to remind the user/operator that an investigation or other corresponding action needs to be performed.

3.3 Atmospheric tank

A storage tank with a design pressure of less than 0.1MPa, built on the ground, and storage of non-artificial refrigeration, non-toxic petroleum, chemical and other liquid media.

3.4 Pay attention to the level of concern; LOC

The owner or operator sets the appropriate warning level, alarm level and automatic overfill prevention function of the tank by calculating the medium level of the tank.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 25 pages — is available in the English PDF.

Referenced standards

Normative references

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