By Chris Dodds : estimated reading time 3 minutes

Hydrogen Sulphide Gas Detection

Hydrogen Sulphide (H₂S) is a potentially lethal gas when exposure occurs, even at low levels. At dilution levels as low as 2-5 PPM, workers can experience nausea and headaches. At 20 PPM people can experience fatigues, dizziness and loss of memory. If the amount of gas reaches 1000 – 20,000 PPM this can be fatal and cause instant death.

Managing H₂S gas in the workplace is key and to prevent workers coming into contact with harmful gases and preventing plant downtime.

These factors alone warrant the installation of effective gas detection and monitoring.

Gas safety is classified into three tiers:

Category 0 – Areas where gas will be present during normal working operations such as confined spaced or vessels

Category 1 – Areas in which gas may be encountered during normal working conditions. Entry is only allowed with a portable gas detector and fixed detection

Category 2 – Areas which are free from gas during normal working conditions but could be contaminated by a gas leak

Key points to remember For H₂S Gas Detection:

Hydrogen Sulphide naturally occurs in crude petroleum and natural gas reservoirs
H2S is toxic at less than 20 parts per million
It becomes flammable at 4.3% of air by volume
H2S is 1.2 times heavier than air so stays low in windless conditions
Hydrogen Sulphide has a highly corrosive nature which increases the chance of a gas leak
H2S inhibits pellistors so infrared sensors may well provide a better detection option
Personal and fixed gas monitors are needed to ensure worker safety

Solutions To Monitor Hydrogen Sulphide (H₂S) Levels

T&D are international distributors for a range of portable and fixed gas detectors. Gas detectors suitable for the fixed point and portable monitoring of H₂S gas include;

Video: Crowcon Clip and Clip+; Maintenance Free Single Gas Monitors

Crowcon – Portable And Fixed Gas Detection Solutions

Crowcon – H2S Gas Detection

Crowcon gas detectors provide a fixed and portable solution to gas detection problems in many industries, detecting single and multiple gases dependent upon individual requirements.

Experts in Equipment

for Explosive Atmospheres

Further Information | Lock | Door | Heater | Fan

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T&D are the UK’s largest stockist of Drum, IBC & Tank Heaters & Jackets. Delivering UK & Worldwide.

T&D’s online library of Drum, IBC & Tank Heating applications is now updated to include the following : marine fuel oil heating stored in bespoke IBC’s in a hazardous area location for the oil & gas industry.

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HEATING JACKET TYPE

Drum
IBC
Bespoke ✓

AREA CLASSIFICATION

Safe Area
Hazardous Area (Zone 1 & Zone 2) ✓

HEATING FLUID, MEDIUM, CONTENTS

Water
Oil ✓ Marine Fuel Oil
Wax
Chemicals
Petrochemicals (Solvents, Detergents, Adhesives, Other)
Food Ingredients (Liquid, Powdered, Granulated)
Other –

Did you know?

MFO (Medium Fuel Oil) is a blend of MGO (Marine Gas Oil) and HFO (Heavy Fuel Oil) with less gasoil than IFO (Intermediate Fuel Oil) according to marine fuel standard ISO 8217.

HEATING APPLICATION

Frost Protection ✓
Reduce Viscosity
Temperature Maintenance
Low Temperature Heating (0-20 degrees Celsius)
Medium Temperature Heating (21-50 degrees Celsius)
High Temperature Heating (50 degrees Celsius+)
Other

IBC Heating Jackets – T&D supply heating and insulating jackets for plastic or steel metal cage IBC’s for bulk liquid storage.

HEATING JACKET VOLTAGE

110 Volt
230 Volt ✓
Low Voltage

HEATING APPLICATION : DRUM, IBC, TANK OR VESSEL

25 Litres
50 Litres
105 Litres
205 Litres
1000 Litres
Other ✓ – Custom 3000 Litre (793 Gallon) Liquitote IBC

VESSEL MATERIAL

Steel ✓
Stainless Steel
Plastic
Cardboard
Other

HEAT UP TEMPERATURE

0-5 degrees Celsius
5-20 degrees Celsius
20-50 degrees Celsius
50-70 degrees Celsius
70+ degrees Celsius
N/A (Frost Protection) ✓

HEAT UP TIME REQUIREMENT

0-4 Hours
4-12 Hours
12-24 Hours
24-48 Hours
N/A (Frost Protection) ✓

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T&D – Largest UK Stockist of Heat Tracing Cables. UK & International Delivery tel 00 44 191 4104292.

ELECTRICAL & PROCESS INSTRUMENTATION EQUIPMENT

FOR EXPLOSIVE ATMOSPHERES

Thorne & Derrick are Specialist Distributors of Hazardous Area & Explosion Proof Equipment with IECEx & ATEX Certifications to the onshore and offshore oil, gas, petrochemicals and process industries.

Trace Heating | System Design & Supply

T&D are the UK’s largest stockist of Drum, IBC & Tank Heaters & Jackets. Delivering UK & Worldwide.

T&D’s online library of Drum, IBC & Tank Heating applications is now updated to include the following : marine fuel oil heating stored in IBC’s in a hazardous area location for the oil & gas industry.

Specified Product Solution : LMK Inteliheat Hazardous Area IBC Heating Jacket

HeatING JACKET Type

Drum
IBC ✓
Bespoke

area Classification

Safe Area
Hazardous Area (Zone 1 & Zone 2) ✓

HEATING FLUID, MEDIUM, CONTENTS

Water
Oil
Wax
Chemicals
Petrochemicals (Solvents, Detergents, Adhesives, Other)
Food Ingredients (Liquid, Powdered, Granulated)
Other ✓ – Marine Fuel Oil

Did you know?

MFO (Medium Fuel Oil) is a blend of MGO (Marine Gas Oil) and HFO (Heavy Fuel Oil) with less gasoil than IFO (Intermediate Fuel Oil) according to marine fuel standard ISO 8217.

HEATING APPLICATION

T&D, The Hazardous Area Heating Specialists

Frost Protection ✓
Reduce Viscosity
Temperature Maintenance
Low Temperature Heating (0-20 degrees Celsius)
Medium Temperature Heating (21-50 degrees Celsius)
High Temperature Heating (50 degrees Celsius+)
Other

Notes : the outdoor storage conditions for the IBC containers with exposure to freezing temperatures combined with a hazardous area (potentially explosive atmosphere) location required an ATEX certified heating solution.

IBC Heating Jackets – T&D supply heating and insulating jackets for plastic or steel metal cage IBC’s for bulk liquid storage.