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SADIE

Safety Alert Database and Information Exchange
Run by UK based Step Change
Further Reading

 

SAP

Systems Analysis and Program Development
Software company based in Germany perhaps best known for their purchasing software suite.
Further Reading

 

SAT - Site Acceptance Test

A test of equipment carried out at site following installation of equipment but prior to commissioning.

Further Reading

 

SCADA

Supervisory Control and Data Acquisition - A term commonly used to describe a PC based software package that allows operator control of a process from a PC and has the PC collecting and storing process information.
Often used with PLCs.
Further Reading

 

SCE

Safety Critical Element

Further Reading

 

scf - Standard Cubic Feet

Pronounced scuf - a measurement of gas e.g. 20 MMSCF/hr being 20 thousand cubic feet per hour

Further Reading

 

SD&P

Simultaneous Drilling & Production
A technique of drilling a new well on a platform while it continues to produce oil or gas.
Further Reading

 

SEP - Sound Engineering Practice

PED classification whereby equipment is required to be designed and manufactured according to 'sound engineering practice'.
SEP equipment must not bear the CE mark.
Further Reading

 

SEPA - Scottish Environment Protection Agency

Public body responsible for the protection of the environment in Scotland.

Further Reading

 

SIL - Safety Integrity Level

A discrete level (1 to 4) for specifying the safety integrity requirements of the safety functions to be allocated to a loop.
SIL 4 being most onerous.
Further Reading
SIL Ratings Toolbox Page
 

SME - Small to Medium Enterprise

Designation given to a UK company with less than 50 employees.

Further Reading

 

SMS

Safety Management System

Further Reading

 

SNS

Southern North Sea

Further Reading

 

SOLAS

Safety of Life at Sea (SOLAS) requirements stipulate minimum equipment to be provided in liferafts.
Liferafts are provided on offshore installations, helicopters etc.
Further Reading

 

SoR

Statement of Requirements

Further Reading

 

Sour

A sour fluid is a fluid that contains hydrogen sulphide (H2S) at 10 ppm or more.

Further Reading

 

SOV

Solenoid Operated Valve

Further Reading

 

SOx - Sulphur Oxides

Sulphur oxide gases (principally Sulphur dioxide - SO2) are formed when fuel e.g. coal and oil; containing sulphur is burned.

Further Reading

 

Spud

To spud a well - to start the actual drilling of a well.

Further Reading

 

Standby Vessel

Rescue vessel that is always within 5 miles of the rig or platform.
Close standby i.e. closer than 5 miles is provided if activities on the asset increase the risk of man overboard.
Further Reading

 

Stellite

Cobalt based alloy commonly applied as coating to valve trims to provide high resistance to wear; corrosion and high temperatures.

Further Reading

 

Step Change

An industry initiative to improve safety performance; awareness and behaviours throughout the UK oil and gas industry.

Further Reading

 

Stonewall

The maximum stable flow and maximum head condition for a centrifugal compressor.

Further Reading

 

STOP

Safety Training and Observation Programme
DuPont initiated scheme designed to create a culture of spotting potential hazards before they cause an accident.
Further Reading

 

STP - Standard Pressure and Temperature

STP is used in many thermodynamic calculations and tabulations and is defined as 0 degrees Celsius and 1 atmosphere of pressure.

Further Reading

 

String

The entire length of casing; tubing or drill pipe used in a drilling operation.

Further Reading

 

Surge

An unstable operating condition when the flow through a compressor is decreased to the point that momentary flow reversals occur.
Can lead to major damage of compressor.
Further Reading

 

SWL

Safe Working Load

Further Reading

 

SWOT

Strengths; Weaknesses; Opportunities and Threats
A technique employed for analysing a competitive situation or proposal.
Further Reading

 

S660 - Settlement Rule

UK tax rule that aims to stop you passing income to someone else in the family or giving income or assets to someone else on the basis that you will have it back later in an effort to reduce your overall income tax bill.

Further Reading
Check Your S660 status
 

SLD

Single Line Diagram
A schematic diagram showing the electrical connection from the main service entrance to all of the facility’s electrical distribution panels and electrical loads.
Further Reading

 

 
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