API 2031 : 1991
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
COMBUSTIBLE GAS DETECTOR SYSTEMS AND ENVIRONMENTAL OPERATIONAL FACTORS INFLUENCING THEIR PERFORMANCE
Hardcopy , PDF
23-07-2013
English
01-01-1991
Section 1 - General
1.1 Scope
1.2 Purpose
1.3 Definitions
1.4 Referenced Publications
1.4.1 Government Codes, Rules and Regulations
1.4.2 Industry Codes, Standards and Recommended
Practices
1.5 System Description and Operation
1.6 Historical Background
Section 2 - Temperature
2.1 General
2.2 High Operating Temperature
2.3 Low Operating Temperature
2.4 Rapid Changes in Temperature
2.5 Considerations
Section 3 - Elevation and Sensor Placement
3.1 General
3.2 Elevation Above Sea Level
3.3 Sensor Placement
3.4 Considerations
Section 4 - Air Velocity
4.1 General
4.2 Considerations
Section 5 - Vibration
5.1 General
5.2 Considerations
Section 6 - Humidity
6.1 General
6.2 Considerations
Section 7 - Aging Characteristics
7.1 General
7.2 Considerations
Section 8 - Exposure to Materials and the Environment
8.1 General
8.2 Inert Gases
8.3 Steam
8.4 Other Gases and Vapors
8.5 Oxygen Deficiency
8.6 Oxygen Enrichment
8.7 Considerations
Section 9 - Plugging of Sensor Heads
9.1 General
9.2 Obstructions
9.3 Considerations
Section 10 - Flooding of Sensors
10.1 General
10.2 Hydrocarbon Vapor Flooding
10.3 Liquid Flooding
10.4 considerations
Section 11 - Power Supply
11.1 General
11.2 Power Variations
11.3 Electrical Continuity
11.4 Battery Backup
11.5 Considerations
11.5.1 Power Supply
11.5.2 Electrical Continuity
11.5.3 Battery Backup
Section 12 - Interferences
12.1 General
12.2 Radio Frequency Interference
12.3 Electromagnetic Interference
12.4 Lightning and Static Electricity
12.5 Considerations
Gives guidance on a number of environmental and operating factors to consider when evaluating the performance of fixed combustible gas detector systems. Coverage includes definitions, high operating temperature, low operating temperature, rapid changes in temperature, elevation above sea level, sensor placement, inert gases, oxygen deficiency, oxygen enrichment, hydrocarbon vapor flooding, liquid flooding, power variations, electrical continuity, battery backup, radio frequency interference, electromagnetic interference, and lightning and static electricity.
| DocumentType |
Standard
|
| Pages |
17
|
| PublisherName |
American Petroleum Institute
|
| Status |
Withdrawn
|
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| NFPA 325M : 1991 | FIRE HAZARD PROPERTIES OF FLAMMABLE LIQUIDS, GASES, AND VOLATILE SOLIDS |
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