Hazardous Area Training: 500 505 API RP

Background of  500-505

500 and 505 are recommended practices classified into individual categories. The API Recommended Practice 500 (RP 500) is Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities. they are classified as Class 1, Divison 1, and Division 2. RP 500 is referred to as the division system. It provides guidelines for classifying locations at petroleum refineries, production and drilling areas, and pipeline transportation facilities for the selection and installation of electrical equipment

API RP 505, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2 (as incorporated by reference in §250.198). RP 505 is referred to as the zone system. The use and application of Both API 500 and API 505 are referred to in the CFR’s (Code of Federal Regulations) and are a requirement under US law pending the facility type and location.

On each engine that has an electric ignition system, workers must use an ignition system designed and maintained to reduce the release of electrical energy.

At OCS Group we offer various competency-based training programs for workers coming from different rig areas. API 500-505 is one of the courses offered in the hazardous area training. This course is suitable for the workers working in the upstream sector. The image below shows two important tools used in the 500-505 training. Click on the image to watch how our technical expert, demonstrates proper installation of the glands and cables.

Click on the image to watch how our technical expert demonstrates proper installation of the glands and cables.

Course: 500-505 API RP 

OCS group offers a 5-day training course about the upstream 500 505 which is focused on training its students on how to prepare, install, inspect and maintain electrical instruments used in the explosive atmosphere near rigs. This course aims at using both practical and theoretical assessments, covering protection concepts to validate a candidates core competency to work safely in explosive

The course covers the following topics:

  • Laws, Standards, Relevant API Recommended Practices (API RP 14F and API RP 14FZ), NFPA 70E, NEC and CFR Regulations.
  • Preparation & installation of IEC and Ex electrical equipment in explosive atmospheres
  • The inspection and maintenance of intrinsically safe and non-incendive equipment and systems in explosive atmospheres.
  • Overview of Area Classifications, Class, Divisions and Zones.
  • Gas groups and temperature classes and Protection types and concepts.
  • Installation of electrical equipment in Explosive Atmospheres or Hazardous Areas.
  • Assessment and Inspection of explosive atmosphere equipment.
  • Testing, Lock Out Tag Out (LOTO) and procedures.

Over the successful course completion, students receive a JTL certificate of Core Completion which remains valid for up to 5 years.

Call or email for additional info: (281) 393-7955, info@ocsgroup.com


Ninja Soni,
Marketing Intern,
OCS Group