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Gas measuring

KTV Group has been managing gas measurement in tanks for several years on rig classification projects. We have followed the development of requirements for gas measurement in tank and enclosed spaces up close. Today KTV Group have 15 certified gas certificate issuers.

In recent years, the demands have become greater in relation to the documentation of air quality. The industry has found that the need for documentation is necessary to ensure the safety of workers in these environments. But has the industry done enough?


AQ Monitor

24/7 real time gas monitor 
Read brochure here

• Simultaneous monitoring of global teams

• Remote monitoring of wide areas

• Lower deployment costs

• Increased situational awareness

• 24/7 datalogging of exposure conditions

• Early warning and tracking of hazardous threats

• Ideal for rapid deployment situations

Most areas have requirements for measuring every 6-24 hours, in addition to the requirements of personal measures on workers. KTV Group has over a long period of work and during many projects noticed the following problems:

– When working in tanks the environment changes quickly. If changes happens it doesn’t help much if the gas measurements were taken an hour earlier.

– Individual monitors are often damaged due to stress from the work environment and can lead to a false sense of security for the worker.

– There is often a lack of individual monitors, or they are not used, even if the entry certificate requires so.

– There have been a number of cases where hot work has been initiated without a valid gas certificate.

– Gases from solvents, cutting torch or other hazards are not captured during work.

– The cost is high due to the cost of certificate per tank.

– No quality control on the documentation of the air quality in the tank if there is an accident.

KTV Group’s research department has for six months been working on a solution to all these challenges, and now we will present a method that solves them all.


The AQ MONITOR system measures the gases in tanks/confined spaces continuously 24 hours a day.

No individual monitors necessary.

The system also measures vapors from solvents/flame cutting.

  • The cost is reduced.
  • Complete measuring history during the entire period.
  • Sensors tailored to customer requirements.
  • All readings available live online (web).


So how does it work?

  • No 1. Planning. Usually we know the scope of work before the rig is docked. Therefor the number of sensors can be mobilized and ready before the rig docks.
  • No 2. Placement of the monitors. Our coordinator ensures placement of monitors in all places where work will be carried out. This is done in cooperation with the rig management.
  • No 3. The monitors will stand on the outside of the tanks. When the values exceeds the assigned values, the monitor will make an alarm sound and the warning light signal will start blinking. The guard can start to evacuate the tank or confined space immediately.
  • No 4. The measurements starts and the certificate issuer puts the appropriate certificates on all measuring locations. The certificate is valid until there is an alarm. When an alarm goes off the certificate issuer will take the appropriate action and then he will re-certify the entry certificate.
  • No 5. In our control center we monitor all measurements 24 hours a day. Our on-site coordinator is in contact with the control center if incidents should occur. The control center will report to the customer.
  • No 6. The customer can follow all the monitors measurements via web if desired. The control center ensures that the documentation is satisfactory. If there is network problems and the control center loses contact with the network, the on site certificate issuer also has a portable monitor to capture alarms.
  • No 7. Project ends. KTV Group stores complete history of all measurements and monitoring on the web. These data will be available for the customer as long as the customer desires – even after the project has ended.

We perform these services world wide.


Key Features

• Real-time display of device status, sensor readings and alarms

• User interface with simultaneous on-screen instrument readings

• Integrated Google Maps show precise instrument locations with alarm status

• Supports up to 500 instruments simultaneously

• Remote alarming via email and text messages

• Data logging in text and graphical formats, including boolean filters

• Open platform for third-party devices and systems


Online & mobile command center for rapid threat response

AQ MONITOR software represents an advanced generation of real-time wireless gas detection software, and serves as a mobile command center for all your threat-detection needs. It allows incident commanders and HSE/safety managers to get constantly updated, real-time data anywhere and anytime they need it. AQ MONITOR software connects, integrates, and relays data from AQ MONITOR and selected partners’ wireless products to remote monitors located anywhere you choose.

AQ MONITOR accepts real-time detector data and instantly displays device status, alarm, and sensor reading information, integrating all information on a single, dynamic map display.

With AQ MONITOR, we monitor your installation from anywhere in the world. Geographically dispersed teams can coordinate threat responses while simultaneously viewing the same situational data, all in real-time.



A selection of our customers

  • Statoil
  • Odfjell
  • Songa
  • Halliburton
  • Transocean
  • Dophin Drilling
  • Oceaneering
  • Saipem
  • Coast Center Base
  • Bergen Group
  • Yara
  • Wilhelmsen
  • Framo
  • Beerenberg
  • OneSubSea
  • Solid
  • Kaefer
  • Franzefoss

A selection of our customers

Kaefer Energy AS
Dolphin drilling AS
Oceaneering AS
Transocean offshore
Vard group
Axess AS
Cabot Specialty Fluids
IST Marine AS
Maritime Consultants
OneSubsea Processing AS
Pipetech International
Vaagebulk II KS
Bergenhus Shipping Services AS
Petroleum GEO Services
West Coast Invest AS
Nomaco Services AS
Odfjell Drilling Technology AS
Stavanger Engineering
Norsk Gjenvinning/Veolia
Wilhelmsen Technical solution
AF Gruppen
Scomi Oiltools
Bergen Group
Coast Senter Base (CCB)
Safeport AS
Semco Maritime
JM Norge AS
Vitek AS
DVS Norge AS
Tiller Vimek AS
Bergen Agent
Sotra Fiskeindustrier
Frydenbø Eiendomsdrift
Askøy Bygg & Betong
Brødrene Steine AS
Lerøy Vest
Finnmark Gjenvinning
Askøy Kommune
Bergen Kommune

A selection of our projects

Scarabeo 5
Scarabeo 8
Island Innovator
BP Skarv
Deepsea Bergen
Deepsea Atlantic
Bredford Dolphin
Borgland Dolphin
Bideford Dolphin
Songa Dee
Songa Trym
Songa Delta
Transocean Winner
Transocean Artic
Transocean Searcher
Transocean Leader
Safe Regalia
Safe Scandinavia
COSL Rival
Floatel Superior
West Venture
Seadrill West Phoenix
Stena Don
Northern Commander
Energy Insula
Mou Island Wellserver
Havila Mars
Havila Flavour
Havila Crusader
Havila Foresight
Havila Venus

Far Saranade
Far Star
Far Sagaris
Far Saracen
Olympic Poseidon
Olympic Promotor
Stril Herkules
Stril Odin
Stril Hercules
Stril Borg
Troms Castor
Troms Pollux
Normand Reach
Normand Flipper
Normand Skipper
Normand Carrier
Normand Skarven
Normand Eurora
Normand Ferking
Skandi Admiral
Skandi Flora
Skandi Stolmen
Skandi Møgster
Skandi Flora
Polar Pioner
North Traveller
Siem Symphony
Siem Pearl
Edda Frigg
Dina Supplier
Maria Soltin

Ocean Vanguard
Ocean King
Bourbon Orca,
Bourbon Surf
Bourbon Topaz
Maersk Leader
Maersk Lancer
Island Frontier
Island Vanguard
Viking Energy
Loke Viking
Rem Provider
Rem Spirit
Rem Fortune
Rem Mist
Rem Star
Sical Torino
Christian Radich
Kystvakten Harstad
Kystvakten Nornen
Hurtigruten Nordlys
Johan hjort
MS Tove
Troms Lyra
M/V Tertnes
Navion Scandia
KL Brisfjord
Eide Baffen
Annelise Theresa
Birthe Theresa

Contact KTV Group!