Item
No.
Status
Section
Subject
Incorporate the concept that removing film deposits from vessel walls
may produce harmful effects such as increased corrosion. Inspector
needs to use some judgment when/where appropriate to remove all
deposits, etc.
Describe plugging, leaking of weep holes in nozzle reinforcement
plates. As part of external, visual inspection.
Create a section for inspection of riveted vessels as this topic is being
deleted from API 510
572-01
572-02
572-03
Originator
Assigned
Action Plan
Shell ballot
Clay
John too!- address
Shell ballot
Ben
Check 510 also - address
Shell ballot
Ray
Josh too!- will capture
original 510 wording
-Find Ballots and
provide path forward, may
need to shoot Gary an email
-Review 510 to determine if
update is needed.
572-04
Cover items 510-133 and 510-134 for UT
G. Heath
Ray send
note to
Steve
Crimaudo
572-05
Recent developments in transducer technology allow welds to be
inspected for thicknesses > 0.25 in.; the thickness range should be
modified to reflect this.
J. McMillan Bal.
510-21-06
Ray to dig
into
510 5.4.4
Potential for corrosion fatigue (especially in No-PWHTed carbon steel
deaerator)
T Tahara Ballot
510-27-07
Chad, check
with Steve
on ballot
Look at NACE- compare to
510 draft and determine path
forward
572-07
510 5.4.4
BP supports the proposal; however, adding a more clear definition of
what constitutes "cyclic service" should be considered. Most vessels
are subject to pressure and/or temperature changes. The magnitude
and frequency are the concerns. As an alternative to a definition,
perhaps adding a few examples of cyclic service vessels may be
beneficial.
D Layman Ballot
510-27-07
Chad, check
with Steve
on ballot
- compare to 510 draft and
determine path forward
572-08
1
Revise the scope statement.
J. Reynolds ,
572 Ballot 1693
John R
572-09
3.1.31
Weld Overlay can be (and ofter is) base metal weld build-up after
thinning is discovered, not just the addition of corrosion resistant filler
metal - revise accordingly.
J. Reynolds ,
572 Ballot 1693
Ben
572-06
572-10
572-11
3.1.9
Change the size of examination point to a circle having a diameter of
approximately 2-3 inches.
J. Krynicki, 572
Ballot 1693
Ray be
consistent
with new
words in
510
4.6
Last paragraph ·
Delete sentence “A pressure vessel should be maintained
according to the requirements of the code under which it was
designed and constructed. If rerated, it should be maintained
according to the requirements of the code under which it was
rerated.”
·
Delete sentence “The inspector should be familiar with the
contents of API 510 and NB-23, where applicable.”
J. Reynolds ,
572 Ballot 1693
Ben
Yes
- address
provide 510 definition
Yes delete
Item
No.
Status
Section
Subject
Add the following:
"One of the most important aspects of conducting inspection planning
is understanding what types of damage that can cause deterioration
and therefore eventual failure of pressure vessels. Neither a valid risk
assessment nor a good job of inspection planning is likely unless
inspectors doing the inspection planning know what are all the
possible and probable causes of failure in each piece of equipment in
each operating environment. Most of these degradation phenomena
are covered in sufficient detail in API RP 571. Every inspector should
have access to a copy in order for the operating site to make headway
on preventing predictable materials, corrosion, and other causes of
equipment failures."
Rewrite the whole section.
Proposed change: “The frequency with which a pressure vessel should
be inspected depends on several factors, including the rate of
deterioration, the corresponding remaining useful life, and the risk of
failure. Scheduling of shutdowns for maintenance or inspection is
usually arranged through the collaboration of process, maintenance,
and inspection groups. Where practical, efforts should be made to
schedule unit shutdowns evenly throughout the year to distribute the
workload on the inspection and maintenance groups. On most units,
operational performance related to equipment cleanliness and
internal fouling may determine the length of a unit run; especially for
towers and exchangers. Mechanical integrity, continued safe
operations, and compliance with environmental regulations are
important considerations in scheduling units for inspection.
Occasionally, seasonal demands for certain products may make some
units available for inspection and maintenance work without serious
interruption of supply. New vessels should be
When process upsets go significantly beyond pre-established limits of
the integrity operating window for the pressure vessels, external
inspections and detailed examinations may be conducted to reassess
the impact on equipment integrity of the process upset, e.g. reactor
runaway conditions.
Originator
Assigned
Action Plan
J. Reynolds ,
572 Ballot 1693
Clay/John
Take a look in 510. Consider
adding reference to IOW. address
J. Reynolds ,
572 Ballot 1693
Ben/John
-address
J. Reynolds
Ben/John
Reword and add as Item f)
Make sure we reference 584
Add a section of Inspection for metallurgical changes and creep,
including HTHA.
J. Reynolds ,
572 Ballot 1693
Clay/Josh/
Mark
C./Justin
Tougher this will take some
work
9.5
This whole section needs to be improved.
J. Reynolds ,
572 Ballot 1693
John R
572-17
9.7.1
Is it still necessary to cover hammer testing?
572-18
9.7.2
The paragraph on pneumatic testing needs to be beefed up with
safety precautions.
572-12
6.2
572-13
7.1
572-14
7.2e
572-15
9.4.4
572-16
J. Reynolds ,
572 Ballot 1693
J. Reynolds ,
572 Ballot 1693
Ben
Ray
John - Special Method for
detecting mechanical
Delete item a) in Hammer
testing section
-address. Refer to PCC-2.
Item
No.
572-19
572-20
Status
Section
Subject
Originator
9.7.4
Add a section on PMI here and reference 578.
J. Reynolds ,
572 Ballot 1693
10.5.1
Delete the 3rd paragraph: “The repair of sample holes left by a trepan
or weld probe tool must be closely inspected. The weld quality in such
repairs is likely to be poor unless carefully controlled. Therefore, the
removal of samples for weld inspection should be avoided if possible.”
J. Reynolds ,
572 Ballot 1693
Assigned
Ben
Ben
Action Plan
-address. Maybe add words
on retroPMI of nipples/small
components
Agree, Also delete reference
to tell-tale holes in 9.2.1. Clay
to handle tell-tale holes.