Series13

API Spec 13A - Specification for Drilling Fluid Materials, Petroleum and Natural gas industries - Drilling and production equipment - Drillthrough equipment
API RP 13B-1 - Recommended Practice for Field Testing Water-Based Drilling Fluids, Petroleum and natural gas industries - Field testing of drilling fluids - Part I: Water based fluids
API RP 13B-2 - Recommended Practice for Field Testing Oil-based Drilling Fluids
API RP 13C - Recommended Practice for Drilling Fluids Processing Systems Evaluation
API RP 13D - Recommended Practice for Rheology and Hydraulics of Oil-well Drilling Fluids
API RP 13I - Recommended Practice for Laboratory Testing Drilling Fluids, Petroleum and natural gas industries‚ÄîDrilling fluids - Laboratory Testing
API RP 13J - Recommended Practice for Testing of Heavy Brines, Petroleum and natural gas industries - Completion fluids and materials - Part 3: Testing of heavy brines
API RP 13K - Recommended Practice for Chemical Analysis of Barite
API RP 13L - Recommended Practice for Training and Qualification of Drilling Fluid Technologists
API RP 13M - Recommended Practice for Measurement of Viscous Properties of Completion Fluids
API RP 13M-4 - Recommended Practice for Measuring Stimulation and Gravel-pack Fluid Leakoff Under Static Conditions

What is an explosive atmosphere?

In DSEAR, an explosive atmosphere is defined as a mixture of dangerous substances with air, under atmospheric conditions, in the form of gases, vapours, mist or dust in which, after ignition has occurred, combustion spreads to the entire unburned mixture.

Atmospheric conditions are commonly referred to as ambient temperatures and pressures. That is to say temperatures of –20°C to 40°C and pressures of 0.8 to 1.1 bar.

Where can explosive atmospheres be found?

Many workplaces may contain, or have activities that produce, explosive or potentially explosive atmospheres. Examples include places where work activities create or release flammable gases or vapours, such as vehicle paint spraying, or in workplaces handling fine organic dusts such as grain flour or wood.

What is ATEX?

ATEX is the name commonly given to the two European Directives for controlling explosive atmospheres:

1) Directive 99/92/EC (also known as 'ATEX 137' or the 'ATEX Workplace Directive') on minimum requirements for improving the health and safety protection of workers potentially at risk from explosive atmospheres. The text of the Directive and the supporting EU produced guidelines are available on the EU-website. For more information on how the requirements of the Directive have been put into effect in Great Britain see the information in the section Explosive atmospheres in the workplace below.

2) Directive 2014/34/EU (also known as 'ATEX 114' or 'the ATEX Equipment Directive') on the approximation of the laws of Members States concerning equipment and protective systems intended for use in potentially explosive atmospheres. The text of the Directive and EU produced supporting guidelines are available on the EU website. For more information on how the requirements of the Directive have been put into effect in Great Britain see the section on Equipment and protective systems intended for use in explosive atmospheres.

Further information:

ATEX Equipment Directive