Leak Detection and Reporting

Leak Detection and Reporting
July 1, 2016 Jamie

Leak Detection and Reporting (LDAR)

NCS is pleased to provide Optical Gas Imaging (OGI) or Leak Detection and Reporting (LDAR).  Our step by step procedure is safety conscious and strictly adhered to.  We include a HSE Location walk around assessment and identify possible hazards or anything that is out of the ordinary and report this to our customers.  This HSE Location Inspection Report has been very useful for our customers, and finding areas of concern and hazards.  Next, we do the OGI or LDAR (looking for gas leaks) – Per Well.  This is done on a per well basis so nothing is missed in the plumbing of each well.  We start at the well and work our way through the facilities following all the plumbing.  This is all precisely documented in our reports as well as on location.  On location everything that we find is marked with bright orange marking ribbon.  NCS is certified in Optical Gas Imaging and LDAR by nationally recognized Infrared Training Center or the ITC.  This is a three day class in Harrisburg, PA and Chris Danielson, Engineering Manager with NCS, stood out in this class by receiving one of the top three scores out of 26 people, and also by asking the professor many valuable questions that the class and instructor found very useful.  Chris developed an ongoing relationship with the instructor and continues to stay in contact with him.  This is the same course that the EPA attends and is required to be certified in.


The equipment we use is a FLIR GF320 Infrared (IR) Camera (This is also the same camera that the EPA uses) with a specialized double magnified lens that allows us to stay far away from any equipment or facilities.  No camera company makes an intrinsically safe IR Camera so we went with the best and most well-known brand available and acquired one of the few very powerful 14.5 degree lens to come with it.  With this lens we can see any facility or equipment on location at the correct angle from a safe distance.  We can see on top of the tank battery and pinpoint a leak with our double magnification lens, all while staying 75 feet away from facilities and equipment.  The GF320 can determine the temperature of equipment onsite such as a heater treater or gearbox.  These temperatures are recorded in the LDAR per well.  The Camera is function tested daily, recorded, and saved to document that the camera was operating correctly and accurately.  We also perform a Non-Uniformity Correction on the camera at the start of every day and also when necessary to make sure we are getting the best image possible.

NCS will provide the client a very detailed report stating the HSE Location Report (Per Location – not per well) followed by the LDAR (Per Well).  NCS will also follow operator specific procedures and reporting upon request.  The infrared video inspection from the GF320 will also be provided to the client.  Upon finding a leak a normal digital picture will also be taken for ease of identification upon repair (The GF320 has the capability of taking infrared pictures as well as normal digital pictures).

When leaks are found we mark these leaks on location with bright orange marking ribbon securely so they can easily be identified and fixed.

NCS has the ability to perform LDAR on H2S locations.  NCS personnel have been trained, certified, and have the appropriate H2S gear.  NCS uses the buddy system on all H2S locations.  As said before Safety is our number one priority.

Safety is our number one goal.  If we can’t perform the inspection in a safe manner than we will come back when the issue has been resolved.  Upon arrival we first fill out a detailed JSA, put on the correct PPE, and make sure that our “4 Gas” Gas Clip monitors are working.  These monitors are bump tested and documented daily.  The 14.5 degree lens gives us standoff capability oftentimes providing the best view of equipment and facilities from off location.

Weather is the biggest factor doing the LDAR.  Wind Speeds greater than 12 mph make it difficult to detect leaks.  Early Morning and late evening are often the best times to perform inspections as the wind speeds are typically reduced.  The GF320 can be adjusted for temperature ranges – ambient and as well as what we are looking at dialing in the perfect picture.  Rain, snow, and fog also affect the camera quality.  We can work through light rain without the quality of the picture or video being affected but heavy rain, heavy snow, or dense fog will create problems getting an image of a gas leak.  Clients are not charged for adverse weather conditions if we go to location and the inspection cannot be performed.

Re-inspection of a repaired leak will be charged at half of the original price.  The Client will receive an IR video of the repaired leak showing that the leak has been fixed.  The customer will also receive an IR video of the entire wellsite for their records.  Any new leaks found will be reported.

Please see prices listed below.  The HSE location Inspection is performed at no charge, it is only done on the initial location well inspection, and not on the re-inspection of wells.  Re-inspections are video and images only.  No reports are included unless specifically requested.  If you have questions concerning the price or how we bill please call Chris Danielson at (406) 489-2811