What is a ‘Permit to Work’ Procedure / Work Permit System?
The „Permit to Work‟ (PTW) Procedure is a formal
written system, which utilize a document to control the work by means of
potential hazards identification and risk assessment.
The work permit is also a means of communication among
various supervisors or their respective belonging to operation, maintenance,
controlling teams and contract personnel, who are involved in work preparation
and / or its execution.
Q. Explain Types of Work Permit normally used in oil
& gas industry?
Types of Work permits:
5 types of work permit
1. Hot Work Permit (red)
2. Cold Work Permit (green)
3. Radiography Permit (yellow)
4. Vehicle/mobile plant entry work permit
5. Confined Space Entry Permit
(a) Cold Work Permit: A document that specifies
precautions identifies hazards and controls all work that is not hot and
radiographic in nature.
(b) Hot Work Permit: A document that specifies
precautions, identifies hazards and controls all work involving actual naked
flames, sparks or has potential for creating sparks or heat.
(c) Radiography Work Permit: A document that specifies
precautions identifies hazards and control all work involving radiographic in
nature.
(d) Vehicle / Mobile Plant Entry Permit: A document
that specifies precautions identifies hazards and controls all work involving
entry of a vehicle or mobile plant into a hazardous area.
(e) Confined Space Entry Permit: A document that
specifies precautions identifies hazards and controls all work involving entry
to an enclosure, which has limited means of entry or exit, not designed for
continuous occupancy.
Q. Explain Each Work Permit Validity?
Hot / Cold / Radiography Permit: Valid for
a maximum duration of seven consecutive days from the date of issue subject to
renewal by the permit issuer. Note: Validity Period for Cold or Hot work permit
in Non-Hazardous area can be extended for a maximum one month with approval
from concerned Team Leader.
Confined Space Entry Permit: Valid for one continuous
work shift or part thereof; however the permit is to be renewed / re-endorsed
in case of crew change, transfer of responsibility, work suspension or as
recorded in the permit. Vehicle / Mobile Plant Entry Permit: Valid for one
continuous works shift for Vehicle entry, whereas for Mobile Plant Entry it is
valid for maximum 7 consecutive working days from the date of issue subject to
renewal by Permit Issuer.
WORKPLACE SAFETY
Q. Explain Each Work Permit Distribution?
Work Permit will be made out in FOUR
COPIES
The Original for worksite
1st copy for Permit Applicant
2nd copy of all permits (except cold work permit)
forwarded to FIRE TEAM by the permit issuer
3rd copy shall be retained by the issuing authority
Note: After completion of work and permit closure as
per procedure… Original kept on record with Permit Issuer. 1st copy shall be
retained by the Permit Applicant (for minimum 6 months). 3rd copy can be given
to Worksite Supervisor for their record.
Q. What important details a work permits gives?
It is a form, which is signed by higher responsible
people to carry out the specific job. It clearly states:
What is to be done,
Where,
When and
What are the safety precautions to be taken.
Q. What is Cold work, Hot Work and Radiography work?
Cold Work: Any work that does not involve a source of
ignition or naked flame or does not have spark generating potential is
classified as a Cold Work.
Hot Work: Any work which involves the use of naked or a
source of ignition or spark generating potential is classified as a Hot Work.
Radiography
Work: Any work that involves the use of a radioactive source, shall be covered
by a radiography work.
