1- What is PSI.
2- Safeguarding Categories and Inherent safe design .
3- PSI Purpose.
4- Proper use of PSI.
5- Process chemical information.
6- Process Technology information.
7- Process equipment information.
8- How will use PSI.
Determine which PSI needing for PHA, Training, PSSR,
MOC and Incident Investigation…etc.
what is process safety?
what is process safety?
Physical, chemical, and toxicological information related to the
chemicals, process, and equipment:
– Written technical documents and specifications
– Engineering drawings and calculations (PID, PFD, Layout…….etc.)
– Specifications for design, fabrication, and installation of process
equipment
– Relevant codes and standards.
– Properties of hazardous materials
Information, data and tools related to process safety management
processes (process barriers), including PSM tools (including hardware
and software barriers) and techniques (e.g. inherent safer design).
Safeguarding Categories
Can be classified into one of four categories:
1. Inherent
2. Passive
3. Active
4. Procedural
Inherent Safe Design
o Eliminating the hazard by using materials and process conditions that are
more better.
o Inherent safety includes the consideration of more than just design
features of a process.
o The principles include human safety factors, in particular the
opportunities for human error given the design and operating conditions
and parameters.
o Inherent safety seeks to remove the hazard at the source, as opposed to
accepting the hazard and attempting to mitigate the effects.
Inherent safer design
Provides the basis for identifying and understanding the
hazards of a process and is necessary in developing hazard
identification and risk assessment.
Provides the basis for process safety competence
May be necessary for complying with other provisions of
PSM such as management of change and incident
investigations
There are procedures to define, develop and maintain the required
documentation and records necessary to support robust operation
and maintenance of facilities.
Documentation and records are readily available to those who
need to use them.
Documentation and records including those kept electronically are
appropriately saving & secured.
There are procedures to ensure that documentation and records
are regularly reviewed and kept up to date as living systems
A retention policy is defined for all documentation and records
Arrangements for documentation, records and knowledge
management are understood and followed; understanding of
arrangements and compliance with them is regularly tested.
Compliance and performance trends are reviewed by specified
levels of management.
“Knowledge” implies understanding. Ensure all staff are process
safety competent.
Exercise
To help identify and understand process hazards,
employers must
first compile written _____.
a. OSHA permits and authorizations
b. safety inspection results
c. process safety information
d. hazard communication lists
Information on hazardous chemicals process shall consist of at
least the following:
Toxicity
Permissible exposure limits (PEL) & STEL & LTEL.
Flammability range (LEL and UEL)
Physical data
Reactivity data
Corrosivity data
Thermal and chemical stability data, and hazardous effects of
inadvertent mixing of different materials.
Information on the technology of the process must include at least
the following:
A block flow diagram or simplified process flow diagram (PFD)
Process chemistry,
Maximum intended inventory,
Safe upper and lower limits for such items as temperatures,
pressures, flows or compositions (Safe operating envelope).
An evaluation of the consequences of deviations, including
those affecting the safety and health of employees.
Information on the equipment of the process must include at
least the following:
Materials of construction,
Piping and instrument diagrams (P&IDs),
Electrical classification (IP rated- IEC60529& ATEX & HAC API505)
Relief system design and design basis,
Ventilation system design,
Design codes and standards employed (Ex. PIP & GAP standards
for Layout and equipment spacing, Risk Managing API RP 752, API
RP 753)
Material and energy balances for processes built after May 26,1992
Safety systems (e.g., interlocks, detection, or suppression
systems)
This information will be used by:
The team performing the process hazard analysis
Those developing the training programs and the operating procedures.
Contractors whose employees will be working with the process
Those conducting the pre-startup reviews
Local emergency preparedness planners and insurance and
enforcement officials
Exercise
Which document can be used to help gather process safety
information about hazardous chemicals?
a. Safety Data Sheets (SDS)
b. Accident investigation reports
c. Process hazard analysis results
d. Operating procedures
Exercise
Safe upper and lower limits for such items as temperatures and
pressures are required information on the _____ of a process.
a. Consequences
b. Safety
c. Sequence
d. Technology
Thanks for your Attention
Any Question ?
