Detailed Services

Since 2001, When first introducing its emission monitoring service for the petrochemical industry, Enserve has developed its emission surveying techniques from conventional “sniff-and-tag” to the present smart LDAR methodology.

This methodology is specifically designed to locate, quantify and reduce volatile organic compound (VOC) emissions, that present fire and health risks as well as being harmful to the environment. Gas and vapour (VOC) leaks from valves, piping and other process equipment is located by means of infrared scanning techniques. Equipment is tagged, leak concentrations quantified with conventional gas monitors and the data recorded and captured on IS Tablets interface with our unique software package .

This allows us to create immediate leak reports which include, plant equipment description, leak data, potential mass loss per annum as well as photographs and videos of leaking equipment. Reports can be uploaded on the customers database the same day.

In addition to curbing leaks into the environment, Enserve could also determine internal leakages in piping i.e. passing valves. Partial restrictions can also be located. This is particularly useful for establishing the location and cause of pipeline flow problems that are creating adverse operating conditions in process plants.

The USD methodology can also be adapted to determine mal-operation in steam traps and other process systems, and together with the airborn sensor invisible steam leaks to atmosphere can be detected in some instances resulting in noise barriers being reduced in operational areas.

Since the start of 2015 Enserve Environmental has been conducting background surveys at refineries going into partial shutdown mode monitoring the background readings in areas where hotwork will be conducted declaring areas safe for work with HSSE and Maintenance departments. Identify hotspot zones in operational areas pin pointing the source that contribute to high background emissions.

Pre-shut surveys is ideal for refineries going into a shutdown phase to determine the exact scope (leakers) to be repacked, reducing cost and eliminating unnecessary work, moreover saving time repairing valves insitu.

Post-shut surveys to determine the effectiveness and quality of work done during the shutdown and also to determine plant integrity during start-up.

In chemical, petrochemical plants and refineries volatile organic vapours and gaseous products losses mainly originate from valve glands. Deterioration of packing material over a period of time requires regular monitoring, gland adjustment and eventual replacing of the gland packing before the gland has completely “bottomed out”.

The LDAR programme is essential for an effective valve gland replacement management system. it identifies those leaking valves in need of gland repacking and can also prevent the unnecessary maintenance to valve (glands) that are still in good condition.

As an extension to our LDAR service, Enserve Environmental Services offers an in-situ Valve Gland Repacking service. This completes the repair portion of the overall LDAR programme by ensuring that unnecessary process leaks are reduced to a minimum.

Since 2013 Enserve has been helping fuel storage depots to comply with the minimum standards of their AEL (Atmospheric Emission Lisence).

In a nutshell depots and plants with storage facilities are obliged by the National Environmental Act to survey all storage tanks and pressure vessels exceeding 14kpa for any medium, shape and size of tank/pressure vessel. Constantly striving to help depots and storage facilities reduce their losses to atmosphere.

A procedure adopted by Enserve Environmental obtaining quality boundary emission data over a 12 month period at 30 day intervals, to accumulate chemical pollutants in the environment. In passive sampling, average chemical concentrations are calculated over a device’s deployment time, which avoids the need to visit a sampling site multiple times to collect multiple representative samples.

The data collected will be used to highlight emission trends that will render it possible to make informed decisions for taking the necessary action(s) to comply with the overall requirements of the National Air Quality Office. Currently, passive samplers have been developed and deployed to detect toxic metals, pesticides, pharmaceuticals, hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and other organic compounds.

Emission Monitoring, Leak Detection and Data Storage Equipment

SDT - 270
Aegex 10 IS
GMI Gas Surveyor 1


Enserve employs over 150 employees in seven centres. With a turnover of $8 million per annum, the company is the largest privately owned pump and valve company in Southern Africa.

Enserve (Pty) Ltd was founded by Steve Bannister, Barnie Brits and Pieter van Schalkwyk in South Africa in 1993.
Enseve began trading from 28 Edison Boulevard in Vanderbijlpark, which remains our head office today.

Initially the company focused on manual valve reconditioning. In 1999 Enserve opened an office in Durban, KwaZulu Natal, to enhance turnaround times to customers. In the same year, Enserve acquired Sasol’s valve repair centre, situated on the Polymers site in Sasolburg. This gave Enserve the equipment, resources and expertise to recondition manual valves, control and safety valves.

In 2001 Enserve expanded into the Leak Detection and Repair (LDAR) field. Today the company is a leader in the LDAR sector on the African continent, having invested over $300 000 in specialist leak detection equipment. We expanded our LDAR reach by opening up a branch in Secunda in 2001, specifically to service Sasol Secunda’s LDAR requirements.

In 2005 Enserve purchased the designs, patterns equipment and stock for IPV (Industrial and Petroleum Valves), and began manufacturing the entire range of IPV products including ball, butterfly and check valves. Today this range of products is regarded as one of the leading firesafe certified ball valve brands in the world.

Our Partners

Sasol Sasolburg

Sasol Secunda

Sasol Mozambique


Natref Durban Operations

BP South Africa

Engen Petroleum



KNPC Kuwait


Petro SA