Attachment F - Spec 16A Summer 2013 Com mtg
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Transcript Attachment F - Spec 16A Summer 2013 Com mtg
API 16A 3rd Edition
Summer Conference Committee Meeting
24-June-2013
API 16A Chairman: John Busby
Co-Chair: Jim McCabe
© 2011 Chevron
API 16A Status
3rd Edition / June 2004 / Effective Date: December 1, 2004
Reaffirmed: August 2010
Present Status: Under Revision
Ballot Target Date: By next Conference 2013
© 2011 Chevron
New Elements for 4th Edition
Established minimum design standards for blow out preventers
Updated temperature chart for blow out preventers (see next slide)
Defined verbiage on “HAZ” zone
– Issue: NACE states 2mm / 6A states 2mm, 16A states 2mm but drawing
shows 1.5mm
– Action: change drawing to reflect 2mm. Consistent with API 6A
Subsea Riser gas handling systems, BOP or Diverter? Should be in
RP-64
Establish PSL-levels for new manufactured Drill Through Equipment.
Dropped, 16A functions based on a PSL-3 level due to the critical
nature of this equipment. Decision was made to not adapt PSL
levels.
© 2011 Chevron
New Temperature Ratings
Table 4 – Temperature ratings of non-metallic sealing materials
Lower Limit
Operating Temperature Limit
Temperature
Code
Temperature
Code
°F
(°C)
A
-15
-26
B
0
C
Extreme Temperature Limit
Temperature
Code
°F
(°C)
°F
(°C)
A
150
66
A
180
82
-18
B
180
82
B
200
93
10
-12
C
210
99
C
220
104
D
20
-7
D
240
116
D
250
121
E
30
-1
E
270
132
E
300
149
F
40
4
F
300
149
F
350
177
G
Other
Other
G
Other
Other
G
Other
Other
EXAMPLE Material “FDE” has a lower temperature rating of 40°F, a continuous elevated temperature rating of 240°F,
and an extreme temperature limit of 300°F.
© 2011 Chevron
New Elements for 4th Edition
Table 26, removed 25k and 30k ratings.
Bernell of ring grooves after make up with gasket in place.
– Discussed, Decided to adapt API 6A inspection criteria.
Align with ST-53 on maximum operating pressure to be used in
shearing
© 2011 Chevron
New/Ongoing Discussion Topics
Develop Minimum Design Criteria for BOPs to Seal and Hold Gas
– Currently being discussed in API 17G
– Low Pressure and High Pressure Gas testing for qualification purposes
– Formed work group to explore testing protocal.
Establish qualification for BOP to close on flow
Establish normal operating system pressure based on well bore
pressure. (i.e. what pressure should be required to close a ram when
there is wellbore pressure trapped in the bore)
Should API16A only cover “Drilling and Completion Applications” , or
should it include Workover / Intervention, Snubbing, etc.
© 2011 Chevron
New/Ongoing Discussion Topics
Set maximum bolting hardness of 35Rc for subsea applications (ref:
connector bolting issue)
– API 6A, section 10.3.3.2
– API 17A, section 6.4
– API 16F, section 6.2.1
© 2011 Chevron
New/Ongoing Discussion Topics
PSIA versus PSIG and PSID?
– Work group formed to collaborate with API 17D & 6A on this issue.
Fluid compatibility for elastomers
– Already addressed in ST-53
Qualifying high temp elastomers for steam
– Parked this issue for now
Hub face separation on subsea drilling connectors
– Look at 17G and gain alignment
Product Marking – 5 year
© 2011 Chevron
New/Ongoing Discussion Topics
Shearing offset pipe. Verbiage is in the draft document.
Better understanding of the minimum operating pressure required to
maintain seal on rams in the presence of wellbore pressure.
– Should this be included in the equipment data package?
Review BOP design criteria for deepwater applications
– Effects of negative pressure (hydrostatic from water depth)
– Bending and tension loads on BOP’s and flanges
© 2011 Chevron
Minimum BOP Design Criteria
Test
Sealing characteristics
Fatigue
Stripping
Shear
Hang-off
Fixed bore a
Ram BOP
Variable bore
Blind a
Shear
Hydraulic
connectors
Annular BOP
Reportable
Reportable
Reportable
Reportable
Reportable
52 cycles
28 @ minimum
dia, 28 at Max.
Dai
52 cycles
52 cycles
52 cycles
3000 ft and 100
tool joints
Reportable
N/A
N/A
3000 ft and 100
tool joints
N/A
N/A
N/A
See Table 18 or
PO
N/A
450k< 5inch
Reportable
N/A
N/A
N/A
N/A
600K >5 inch
Packer access
Ram locking device
Locking mechanism
Sealing mechanism
Temperature verification
© 2011 Chevron
200 cycles with 10 pressure cycles
50 cycles
11 Successful Lock and seal
N/A
N/A
Low temp 3 cycles, HT Fatigue 200 closures 10 pressure cycles, HT Emergency 1 Hour hold
time
P2, S2
P1, S3
N/A
Agenda
Safety Moment
Introductions
Status
Review New Elements for 4th Edition
Review New/Ongoing Discussion Topics
© 2011 Chevron