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Flag, Bypass and
Monitor Procedure
While performing services for Chevron
Exploration and Production Company it is the Contractor's responsibility
to ensure that all work is performed safely and in full compliance
of all applicable rules, regulations and policies.
Contents
Definitions
In-service the device or component is performing its
designed function.
Bypass to block-out or disable a Safety Device so that
it will not perform its designed function.
Maintenance adjustments or repairs, typically of short
duration, that can be performed without compromising effective
monitoring. (i.e. leaving the area for parts, supplies, or tools).
For clarification, discuss with your supervisor.
Qualified Person A person that has successfully completed
a production safety system training program (e.g. ERTCs PSST) and
is familiar with the site specific monitoring procedures of that
facility. Any person that has not received the required training
must be directly supervised by a Qualified Person when engaged in
installing, testing, inspecting, flagging, bypassing, monitoring
or maintaining safety devices.
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Out-of-Service A component is Out-of-Service (OOS)
when it is not being used as part of the production process and it
is properly isolated from all other production equipment or energy
sources on the facility. Safety Devices for an out of service
component must be labeled "Out-of-Service". It is not necessary to
monitor the bypassed Safety Device function. However, the PSV on
any Out-of-Service component must be left In Service, maintained
and tested.
Properly Isolated as per 30 CFR 250.803(c) (2), (3)
When wells are disconnected from producing facilities
and blind flanged, equipped with a tubing plug, or the master
valves have been locked closed, compliance is not required
with the provisions of API RP 14C or this regulation
concerning the following:
(i) Automatic fail-close SSV's on wellhead assemblies,
and
(ii) The PSH and PSL shut-in sensors in flowlines from wells.
When pressure or atmospheric vessels are isolated from
production facilities (e.g., inlet valve locked closed or
inlet blind-flanged) and are to remain isolated for an
extended period of time, safety device compliance with API RP
14C or this subpart is not required.
Temporarily Out-of-Service A component is Temporarily
Out-of-Service when it is in standby, shut-down or not in use
(i.e. test separators, intermediate pressure vessels, etc) but can
easily be placed in service. Components are NOT isolated from
production facilities as per 30 CFR 250.803(c). In this situation,
Safety Devices that have been bypassed must be flagged with
temporarily out of service tags. The Safety Device functions do
not have to be monitored but must be tested and maintained in
accordance with API RP 14C.
Flag / Tag A hanging, removable placard that
identifies the status of a safety device. Tags should only be used
on bypassed or Temporarily Out-of-Service devices or components.
Label A placard permanently affixed (glued, stuck,
stenciled, screwed) to the panel, device, or component for
identification of the device and/or service status.
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