Johan Inspection Services (JIS) specializes in the field of Non-Destructive Testing, Engineering Inspection and Heat Treatment Service.
JIS has a group of experienced and qualified technical personnel servicing petrochemical, oil & gas, steel, oil palm, power generation, piping and fabrication industries.

JIS has a comprehensive range of facilities with the capability of undertaking high specification and quality service on complex heavy engineering construction.
The company's philosophy is to provide good job quality performance and commitment to customers.

In JIS, you can be assured of quality and professional service.

Below are the services JIS provide:

	RADIOGRAPHY TESTING
	Industrial radiography testing is the use of penetrating (gamma ray) radiation to make an internal image of object for the detection of discontinuities or defects.
	ULTRASONIC TESTING
	Ultrasonic testing is widely used for subsurface or internal quality assurance, as it can determine the size and location of discontinuities.
	SMALL CONTROLLED AREA RADIOGRAPHY (SCAR)
	SCAR technology effectively allows radiography testing to be performed with a smaller restrictive barricaded area.
	POSITIVE MATERIAL IDENTIFICATION (PMI)
	Essential inspection used for verification of material compositions and eliminates the possibility of installing the wrong material type.
	MAGNETIC PARTICLE TESTING
	Magnetic particle inspection is primarily used for the detection of surface and subsurface cracks. The leakage flux attracts fine magnetic particles to the crack forming a reliable visual indication on the material under test.
	PRE-HEATING
	Pre-heating is an effective mean of preventing parent metal or weld cracking. Heat input is apply to the parent metal prior to welding process.
	POST WELD HEAT TREATMENT
	Post weld heat treatment is the process of heating the welded fabrication to an applicable temperature or time to reduce internal stress caused by welding.
	ULTRA-VIOLET BLACK LIGHT (FLUORESCENT)
	Fluorescent particle are more visible than regular particle indication when view in a darkened area with black light. This great visibility is ideal for locating hairline cracks in complex parts.
	DYE PENETRANT TESTING
	Dye penetrant testing is effective for locating minute discontinuities which are opened to the surface. Dye penetrant is carried into surface discontinuity by capillary action and is indicated with bleed out.
	HARDNESS TESTING (BRINELL/ VICKERS/ ROCKWELL)
	Hardness testing is a method to determine the resistance of a material to permanent indentation . Hardness testing can be done using Vickers, Brinell or Rockwell scale.
	FERRITE TESTING
	Determination of ferrite content in stainless steel.
	PIPE COATING INSPECTION (HOLIDAY DETECTION)
	Physical inspection on the preparation and pipe coating to the applicable requirement.
	VACUUM INSPECTION
	A vacuum box equipped with a transparent viewing window and rapid evacuation equipment are used for the testing of weld seams. Leaks are indicated by bubble formation.
	WELDER QUALIFICATION TEST
	To determine the welders' or welding operators' capability of developing an acceptable weld to the requirement of an applicable specification.
	ULTRASONIC THICKNESS SURVEY
	Measurement of equipment and process piping system thickness for corrosion and integrity monitoring. This avoids downtime of equipment or process system failure due to corrosion and thinning of wall thickness.

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