Hazardous Area Classifications
It is require that areas where accidental releases of dangerous substances could occur are identified and classified according to the likelihood of the formation of a flammable atmosphere. Within classified areas sources of ignition should be controlled. This course is designed to provide delegates with the knowledge to carry out straightforward hazardous area classification in accordance with commonly used standards or to act as an intelligent customer when contracting others to deliver this role.
Pre-Test
Basic Concepts of hazardous area classification
a. Responsibility of the Engineer
b. Background history
c. The Fire Triangle
d. Risk of Ignition Verses Probability of Release
Codes Standards and Recommended Practices
a. CEC Section 18; Code for Electrical Installations at Oil and
Gas Facilities
b. API RP 500, RP 505
c. NFPA 497
d. IEC 60079-10, ISA 12.24.01
e. IP15, IGE/SR/25
f. NFPA 325, IEC 60079-20
Definitions
a. Class, Zone, Group, AutoIgnition Temperature
b. Normal verses Abnormal Operations
Hazardous Materials
a. Flammable Gases
b. Flammable Liquids Classification
c. Combustible Liquids Classification
d. Flammability relationships
e. Properties of hazardous mixtures
Ventilation
a. Adequate verses Inadequate ventilation
b. Relationship of Grade of Release and degree of ventilation to zone classification
Methods of Area Classification
a. Classification by example
b. Point Source method
c. Hybrid approach
d. Risk based approach
Application of the Principles
a. Classification by Example - Gas Station
b. Classification by Example – Drilling Rig
c. Hybrid Method – Upstream Oil and Gas Facility
d. Hybrid Method – Refinery
Documentation Requirements
a. Area Classification Study Contents
b. Calculations
c. Area Classification Drawing Requirements
Alternative Methods of Area Classification
a. NFPA 497
b. API Alternative Method
c. RP 505 Alternative Ventilation Criteria
Post Test
A variety of methodologies will be used during the course that includes:
To be advised as per the course location. This rate includes participant’s manual, Hand-outs, buffet lunch, coffee/tea on arrival, morning & afternoon of each day.
Daily Course Timings:
08:00 - 08:20 Morning Coffee/Tea
08:20 - 10:00 First Session
10:00 - 10:20 Recess (Coffee/Tea/Snacks)
10:20 - 12:20 Second Session
12:20 - 13:30 Recess (Coffee/Tea/Snacks)
13:30 - 15:00 Last Session