Transcript Slide 1

OSHA
South Texas Exploration Safety
Network
July 16, 2008
Introduction
1. Anson
2. Mismatched Hammer Unions
3. “DB” Line of Plug Valves
MISMATCHED HAMMER
UNIONS,
AN ENGINEERING FIX
2” Fig 602 vs. 2” Fig 1502
Chain of Events
History of the Problem
B. Participation
A.
A 2” Fig. 1502
in Industry
nut andTask
a 2” Force
Fig. 602 female sub can,
under 1.certainStarted
circumstances,
March 1999
be made up into a
connection that will
Mediated
hold a certain
by H&P
amount of pressure.
The amount
2.
All
of pressure
Major Hammer
such anUnion
assembly can hold will
largely depend
manufacturers
upon the position
participated.
within the tolerance
bands the individual
Anson, FMC,
pieces
SPM,
have
& been
Kemper;
machined to and/or
the strength
3.
Ended
of the November
materials used
1999in their manufacture.
There are other
No clear
such consensus
combinations
for possible.
the group to
move forward as a whole.
Anson’s Initial Response and
Action
A.
Reinforcement and Continued Emphasis on
Existing Safety Features (1999-2000)
1. Color Coding
2. Clear Stamping on nut and subs
Including Size, Fig, CWP, Batch No.
3. Know the Dangers
4. Do not mix Fig Numbers
5. Do not mix Materials
6. Consistent Training
B.
Safety Alert and Warning Posters (2000 – 2001)
1. Sent to all safety managers within IADC (3000).
2. Documented all requests and sending of
Posters.
Anson’s Long Term Goal
and Response
Develop/Redesign
2” Fig 602 as to not
interchange with
2” Fig 1502
Initiating the Corporate Change
A.
400,
402,
andand
1002
and
B. Withdrew
All existing
2”2”
FigFig
400,
402,
2”Unions
Fig
C.
Only
after all
completion
of
the1002
above
was
the602
new
2”
components
fromUnion
the product
range,
literature,
and
Unions
Fig
602 and
Hammer
components,
released
both in
for
stock
manufacture
and
price
list. were returned from all international
production,
and
supply
locations to UK (Corporate) and destroyed
Re-Design
Features &
Benefits
New 2” Fig 602 Hammer Union
•Mates with
•Longer
•Increased
Shoulder
2”OLD
Fig 602
Stylestamping
(Original) 2” Fig 602
•Threads Truncated
not to overlap threads
of a 2” Fig 1502 Nut
Industry Path Forward, 2008+
1.
Participation
in API
(TG5).union
The Group
3.
users
to
2. Encourage
other
hammer
includes manufacturers,
discontinue
useto
ofimplement
products and
by
manufacturers
theend
users of
hammer
unions
manufacturers
that do
not and is
proposed
engineering
solution.
responsible
for solution.
producing API-7 HU.
adopt
engineering
API-7HU outlines recommended
safety practices as well as the
engineering solution proposed
above.
www.ansoninc.com