Pipe Supports and Hangers
•What is the task? What document describes it? Do
I understand it?
•What is the worst thing that can happen and how can
I prevent it?
•What else can go wrong?
•What safety and/or radiation protection
considerations?
•Is my training, and are my qualifications up-to-date?
What is the task I am
going to perform? What
document describes it?
Do I understand it?
The task is to receive training on the use of the sites hanger
installation specifications.
The hanger installation specifications are 13-PN-204 (Nuclear
Installations) and 13-PN-205 (Balance of plant). Today we will
be looking at 13-PN-205 which is similar to 13-PN-204.
This presentation will provide an insight on how to use the Hanger
installation specifications more effective.
What is the worst thing
that can happen and how
can I prevent it?
The worst things that could happen is that I do not
pay attention and do not receive the material
presented.
What else could go wrong?
Not using the work mechs, procedures and
piping/hanger installation specifications
correctly will result in hanger installations that
do not meet design requirements. This can
lead to costly rework.
What safety and/or radiation
protection considerations?
The training setting today will
not require the use of PPE and
does not have any radiation
protection considerations.
Is my training and are my qualifications
up-to-date?
The taking of this course with successful passing of
the CBT Test will help you to complete prerequisites
for future SWMS Work Assignment Areas.
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Walk downs
Review instructions to
ensure workable and
adequate
Right Parts, Materials
Permits
Relevant Operating
Experience
Pre Job Briefs:
• Understand the Task
Critical Steps
identified and OE
used AND what
actions are being
taken in reference to
these two areas
Two Minute Drills:
• Hazards identified
AND what are actions
are you taking
•
•
•
•
Procedure
Use & Adherence
WO / procedure in
hand & latest revision
Place keepers being
used
Sign steps as you go
Follow & understand
steps - STOP if can't
or don't
Course /Lesson Terminal Objective
Using 13-PN-205, participants will
identify requirements for the installation
of pipe supports, hangers and piping
system struts. Participants are
required to score 80% on a written
exam.
Pipe Support Installation Specifications
• Pipe supports are designed to transmit loads
from a pressure retaining barrier of the
piping to a load carrying structure
Pipe Support Installation Specifications
• The design and location of pipe supports
shall be the responsibility of Engineering
• All design details will be shown on
drawings, including miscellaneous steel
when required
Pipe Support Installation Specifications
• Installation of supports shall be in
accordance with the design drawings,
applicable codes and/or standards, as well as
13-PN-204 or 13-PN-205
Pipe Support Installation Specifications
• The pipe support location critical
dimension is used to locate the support on
the pipe system
Pipe Support Installation Specifications
The pipe support location critical
dimension shall be indicated on the
location plan of the pipe support design
drawing or on a sectional view of a vertical
run of pipe; and will be from an elbow,
tee, flange, etc., to the support's location.
Pipe Support Installation Specifications
If a dimension is not provided, the critical
dimension shall be the reference dimensions
from the building columns shown on the
location plan of the pipe support design
drawing, or for vertical run pipe, the
centerline elevation of the component detail.
Pipe Support Installation Permitted
Deviations
Deviations are permitted provided that
the function of the support is not affected,
and the required clearance for thermal
growth is maintained.
Pipe Support Installation Permitted
Deviations
Deviations and tolerances for sizes, lengths,
and position of miscellaneous steel angles,
channels, I beams, tube steel, wide flanges,
and plates shall be in accordance with 13PN-204 or 13-PN-205.
Pipe Support Installation Permitted
Deviations
Though the specifications allow for
deviations, for consistency on these
deviations a team leader or the planner
shall be contacted for the proper
interpretation/application of the
specifications.
Runs of Pipe  2-1/2”
Free of Obstructions
• Support location (as shown by the
support's critical dimension) may deviate:
• ±2 inches transversally
• ±12 inches axially
Runs of Pipe  2-1/2”
Free of Obstructions
• Miscellaneous steel members with field
welded end connections may be
repositioned up to:
• ±2 inches vertically
• ±2 inches horizontally
Runs of Pipe  2”
Free of Obstructions
• Support location (as shown by the
support's critical dimension) may deviate:
• ±4 inches transversally
• ±9 inches axially
(except when the support location is within ±12"
of valves, flanges, or any other concentrated load)
Runs of Pipe  2”
Free of Obstructions
• Miscellaneous steel members with field
welded end connections may be
repositioned up to:
• ±4 inches vertically
• ±4 inches horizontally
Sway Struts
• Shall be installed such that they are within
±five degrees (5) of the design angle
when the pipe is at its design operating
temperature and pressure
Spring Hangers
• May deviate a maximum of five percent
(5%) from the design cold load setting
Variable Spring Or Constant
Spring Supports
• May deviate from the vertical ±4 between
the beam attachment load bolt/pin and
the load stud of the pipe clamp when the
pipe is at its design operating temperature
and pressure
Pipe Strap and Restraint Clearances
Clearance between pipe wall (or pipe
attachment) and structures shall be as
follows:
Pipe Strap and Restraint Clearances
• Where 1/16" clearance is specified at one
side and no clearance is specified at the
opposite side in the restrained direction, the
1/16" clearance may be inspected from 0"
(free to slide) to 1/8" maximum clearance.
Where 1/16"
clearance is
specified at
one side and
no clearance is
specified at
the opposite
side in the
restrained
direction,
the 1/16" clearance may be inspected from
0" (free to slide) to 1/8" maximum clearance.
Pipe Strap and Restraint Clearances
• Where 1/16" clearance is specified at each
opposite side, the inspection may be from
0" (free to slide) on one side to 1/16"
minimum and 1/8" maximum total for both
sides.
•Where 1/16"
clearance is
specified at
each opposite
side,
the inspection may be from 0" (free to slide) on
one side to 1/16" minimum and 1/8" maximum
total for both sides.
Pipe Strap and Restraint Clearances
• For all other cases, the minimum inspection
clearance shall not be less than the design
pipe move-ment in the direction of the
minimum clearance plus additional
clearance for thermal radial growth.
U-Bolt Clearances
U-bolt
clearances for
guides may be
from 0" (free
to slide) to
1/8"
maximum
U-Bolt Clearances
Clearances
for 1" dia.
plastic coated
U-bolt may
be from 0"
(free to slide)
to 1/4”
maximum.
Pipe Strap, Restraint and U-Bolt
Clearance Inspection and Verification
Inspection and verification of 0” (free to
slide) clearance between pipe wall and
miscellaneous steel supports, restraint
straps, welded pipe attachments, or U-bolts,
the inspection method may be one of the
following:
Pipe Strap, Restraint and U-Bolt
Clearance Inspection and Verification
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feeler gauge
measure
move the pipe by hand
see visible light
Pipe Strap, Restraint and U-Bolt
Critical Attributes
• 1# Support identification
• 2# Configuration and location,
including clearances
• 3# Material per design
• 4# Concrete anchors installed
Pipe Strap, Restraint and U-Bolt
Critical Attributes
• 5# Grout Complete
• 6# Fasteners torqued
• 7# Welding complete
The End…