Setting specifications for safety monitoring and controlling equipments in dangerous chemicals major hazard installations Tanks section
1 Scope
This standard specifies the setting requirements and management of safety monitoring and controlling equipment in tanks section of major hazard installations of hazardous chemicals.
This standard is applicable to the setting of safety monitoring and controlling equipment in tanks section of major hazard installations of hazardous chemicals in chemical industry (including petrochemical industry), and other industries may be implemented by reference.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendment) applies.
GB 3836 Electrical apparatus for explosive gas atmospheres
GB 12158 General guideline for preventing electrostatic accidents
GB 12358 Gas monitors and alarms for workplace — General technical requirements
GB 16808 Technical requirements and test methods for combustibic gas alarm control units
GB 17681 Technical requirements of acceptance for safety monitoring, controlling and early warning system of inflammable and explosive tank farm
GB 50058 Code for design of electrical installations in explosive atmospheres
GB 50074 Code for design of oil depot
GB 50116 Code for design of automatic fire alarm system
GB 50160 Fire prevention code of petrochemical enterprise design
GB 50257 Code for construction and acceptance of electric equipment on fire and explosion hazard electrical equipment installation engineering
GB 50493 Specification for design of combustible gas and toxic gas detection and alarm for petrochemical industry
AQ 3035-2010 General technical specification for dangerous chemicals major hazard installations monitoring and controlling
HG/T 20507 Design code for instrument selection
HG/T 21581 Instrument hook ups
SH 3005 Design specification for instrumentation selection in petrochemical industry
SH/T 3019 Design specification for instrument tubing and wiring in petrochemical industry
SH 3097 Specification for design of static electricity earthing in petrochemical industry
SH/T 3104 Specification for design of instrument installation in petrochemical industry
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
safety monitoring and controlling equipments
related equipment for monitoring, alarming and controlling dangerous factors (parameters) in tanks section
3.2
leak source
position that combustible or toxic gases (including vapor) may be released
3.3
fully close or half close site
rooms with ceilings, walls, doors and windows are fully close sites, and places with ceilings, more than half of the walls (or flower walls) and poor natural ventilation but without doors and windows are half close sites
3.4
fully open and half open site
spaces without ceilings and walls are fully open site. Spaces with only ceilings and good natural ventilation but without walls are half open site
3.5
monitoring and forewarning parameter
parameters of physical quantity or chemical quantity that can forecast, predict and characterize whether things are in a safety state or affect the safety state
3.6
combustible gas
gas with a certain flammability range when mixed with air at 20°C and standard atmospheric pressure of 101.3 kPa
3.7
toxic gas
including:
a) gases known to pose a hazard to human health
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Setting requirements of safety monitoring device in tanks section
5 Setting requirements of interlocking control equipment
6 Setting of safety monitoring and controlling equipments in tanks
7 Setting of combustible gas and toxic gas monitors and alarms and leak control equipment in tanks section
8 Settings of weather monitoring, lightning protection and anti-static equipment in tanks section
9 Setting of fire monitoring device in tanks section
10 Setting of audio and video monitoring equipment
11 Laying requirements of transmission cables for safety monitoring and controlling in tanks section
12 Management of safety monitoring and controlling equipments in tanks section
