API-AGA14 3 Part2 Year 2000 Revisions 2 3MB - Cesar Delgado

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EFFECTS OF
APRIL 2000
REVISION OF
API 14.3 PART 2
ORIFICE METER
TUBES
CHANGES TO API 14.3 - APRIL 2000CHANGES TO API 14.3 - APRIL 2000
INTERNAL SURFACE FINISH
UPSTREAM LENGTH
STRAIGHTENING VANES
FLOW CONDITIONERS
8” PLATE THICKNESS
THERMOWELL LOCATION
STAGGERED TAPS
 P LEAD LINES
INCREASED DIFFERENTIAL
GRANDFATHER CLAUSE
INTERNAL FINISHINTERNAL FINISH
WAS 250 MICROINCH THROUGHOUT
CHANGES TO API 14.3 - APRIL 2000
•NOW SIZE AND BETA DEPENDENT
METER TUBES TO 12” SIZE
CHANGES TO API 14.3 - APRIL 2000
INTERNAL SURFACE FINISH
METER TUBES 16” & LARGER
INTERNAL SURFACE FINISH
CHANGES TO API 14.3 - APRIL 2000
THOUGH UNDESIRABLE, ARE NOW ALLOWED,
IF THEY DON’T
→EXCEED I.D. TOLERANCE
→EXCEED FINISH REQUIREMENT
PITS
CHANGES TO API 14.3 - APRIL 2000
UPSTREAM LENGTH SELECTION
UPSTREAM LENGTH SELECTION
→BARE TUBE ( no vane or conditioner)
→SHORT TUBE WITH VANE
→LONG TUBE WITH VANE
→TUBE WITH CONDITIONER
4 CATEGORIES
CATEGORY ( no vane or conditioner )
NOW IS 145D
UNIVERSAL “CATCH ALL” METER TUBE
CATEGORY Bare Meter Tubes continued,
Shorter Lengths Possible For Specific Installations
CATEGORY Bare Meter Tubes continued,
Shorter Lengths Possible For Specific Installations
→Single 90º Elbow @ .75β ---44D
→(2) 90’s Out of Plane (close coupled) @ .5β --95D
→Concentric Reducer @ .75β --13D
→Tee (used as an elbow-not header) @ .75β --44D
See
detail
CATEGORY
NO VANE OR
CONDITIONER
MAX .46 BETA
CATEGORY SHORT VERSION WITH VANE
UNIVERSAL METER TUBE WITH VANE
SHORT UPSTREAM
LENGTH WITH TUBE
BUNDLE
COMPARISON OF
OLD AND NEW
REQUIREMENTS
CATEGORY
CATEGORY
Short upstream
with tube bundle
CAREGORY LONG VERSION WITH VANE
MAX .67 BETA
UNIVERSAL METER TUBE WITH VANE
CATEGORY
LONG UPSTREAM
WITH TUBE BUNDLE
LONG UPSTREAM
LENGTH WITH TUBE
BUNDLE
COMPARISON OF OLD
AND NEW
REQUIREMENTS
CATEGORY
THE METER TUBE LENGTH INFORMATION
CONTAINED IN THIS REVISION WAS BASED ON
THE RESULTS OF ACTUAL FLOW TESTING AT
12 LABS (DOMESTIC AND INTERNATIONAL),
USING BOTH LIQUID AND GAS.
CHANGES TO API 14.3 - APRIL 2000
CHANGES TO API 14.3 - APRIL 2000
TUBE BUNDLE STRAIGHTENING VANES
19 CONCENTRIC SAME SIZE TUBES
NEW, TIGHTER TOLERANCES
TUBE BUNDLE STRAIGHTENING VANES
CHANGES TO API 14.3 - APRIL 2000
CONCENTRIC PATTERN
HEX PATTERN
NOT ALLOWED
TUBE BUNDLE STRAIGHTENING VANES
HEX PATTERN
CHANGES TO API 14.3 - APRIL 2000
END BANDS
NOT ALLOWED
TUBE BUNDLE STRAIGHTENING VANES
CHANGES TO API 14.3 - APRIL 2000
END BANDS
7 TUBE BUNDLE
NOT ALLOWED
TUBE BUNDLE STRAIGHTENING VANES
CHANGES TO API 14.3 - APRIL 2000
7 TUBE BUNDLE FOR 2” SIZE
FLOW CONDITIONINGFLOW CONDITIONING
FLOW CONDITIONERS
REMOVE SWIRL AND CREATE A NEAR
 FULLY DEVELOPED FLOW PROFILE
CHANGES TO API 14.3 - APRIL 2000
THE DANIEL PROFILERTM
CONDITIONER PLATE
Profiler™ Installation
METER TUBE WITH PROFILER
CHANGES TO API 14.3 - APRIL 2000
Meter tube upstream lengths
and beta ratio limits for use
with all flow conditioners
other than the standard tube
bundle will be established by
the manufacturer based on
required testing
(ref. Par. 2.5.5.4 AGA-3/API 14.3 April
2000)
CHANGES TO API 14.3 - APRIL 2000
THE USE OF FLOW
CONDITIONERS MAY ALLOW
SHORTER UPSTREAM PIPE
LENGTHS
BUT
A SERIES OF TESTS MUST BE RUN
BEFORE OFFERING THE DEVICE
TO THE MARKET
CHANGES TO API 14.3 - APRIL 2000
Disturbance TestsDisturbance Tests
→Good Flow Conditions
→Two 900 Elbows in Perpendicular Planes
→Gate Valve 50% Closed
→High Swirl
CHANGES TO API 14.3 - APRIL 2000
Flow Conditioner Qualification Test
CHANGES TO API 14.3 - APRIL 2000
Flow Conditioner Qualification Test
•Good Flow Conditions - test evaluating impact of flow
conditioner on fully developed velocity profile.
•Install the conditioner in the specified location preceding a
meter tube where the installation has been shown to already
have a swirl free, fully developed profile. This proves the
device has no negative effect on flow.
•Two 900 Elbows in Perpendicular Planes - testing of flow
conditioner performance in handling combination of a modest
swirl and a non-symmetrical velocity profile.
CHANGES TO API 14.3 - APRIL 2000
Flow Conditioner Qualification Test
Gate Valve 50% Closed - test evaluating flow conditioner
performance in strongly non-symmetrical velocity profile
CHANGES TO API 14.3 - APRIL 2000
Flow Conditioner Qualification Test
•High Swirl - test assessing flow conditioner performance
in flows with high swirl angle (over 250).
CHANGES TO API 14.3 - APRIL 2000
Flow Conditioner Qualification Test
Swirl must be reduced to 2º Max
Additional TestsAdditional Tests
– Orifice β ratio: Check swirl test at β=0.40 and
β=0.67
– Reynolds Number Sensitivity: Test at two
ranges 10,000 < Re <500,000 and Re > 1MM
with approximately a 7:1 ratio.
– Scaling: Test at two sizes selected from 
D < 4” and D > 8”
Flow Conditioner Qualification Test
CHANGES TO API 14.3 - APRIL 2000
ANY FLOW CONDITIONER
CHOSEN SHOULD HAVE TEST
DATA SHOWING COMPLIANCE
WITH THE TESTING PROGRAM
OUTLINED IN AGA/14.3
CHANGES TO API 14.3 - APRIL 2000
CHANGES TO API 14.3 - APRIL 2000CHANGES TO API 14.3 - APRIL 2000
WAS 12” TO 36” UPSTREAM OF VANE
NOW IS 36” MINIMUM UPSTREAM OF VANE
UPSTREAM THERMOWELL LOCATION
STAGGERED PRESSURE TAPSSTAGGERED PRESSURE TAPS
NOT ALLOWED
CHANGES TO API 14.3 - APRIL 2000
STAGGERED PRESSURE TAPS
PLATE THICKNESS CHANGE
→8” SIZE WAS 1/8” THICK
→NOW IS 1/4” THICK
CHANGES TO API 14.3 - APRIL 2000
Reason: differential was limited to 150” in an orifice fitting
→Some 1/8” and 1/4”
seal/plate assemblies may be
interchangeable in the same
fitting, allowing installation of
the wrong plate in the right
fitting
CHANGES TO API 14.3 - APRIL 2000
IMPACT OF 8” PLATE CHANGE TO 1/4” THICK
→Plate carriers and/or seal rings for
some manufacturers’ fittings may
be different for 1/8” and 1/4” thick
plates
CHANGES TO API 14.3 - APRIL 2000
IMPACT OF 8” PLATE CHANGE TO 1/4” THICK
→Existing installations using
1/8” thick plates will require
careful organization if 1/4”
units are added
IMPACT OF 8” PLATE CHANGE TO 1/4” THICK
CHANGES TO API 14.3 - APRIL 2000
PLATE THICKNESS CHANGE
→24” SIZE WAS 3/8” THICK
→NOW IS 1/2” THICK
CHANGES TO API 14.3 - APRIL 2000
Reason: differential was limited to 150”
DP TAP CONNECTION LINE LENGTHS
CHANGES TO API 14.3 - APRIL 2000
→EQUAL LENGTH LINES
→SHORT AS POSSIBLE
DP TAP CONNECTION LINE LENGTHS
CHANGES TO API 14.3 - APRIL 2000
DIFFERENTIAL TAP LINE LENGTHDIFFERENTIAL TAP LINE LENGTH
IF RESONANCE OR PULSATION IS SUSPECTED,
– CALCULATE PROPER LENGTH USING THESE 5 EQUATIONS BASED ON
PULSATION FREQUENCY (f) AND SPEED OF SOUND IN FLUID (a)
length L = factor x a / (2 B f )
 0.25 
 2.5
 5.5
 8.5
 11.5 
THE RESULTING LENGTH NEAREST THAT PREFERRED SHOULD BE USED
CHANGES TO API 14.3 - APRIL 2000
DP TAP CONNECTION LINE LENGTHS
INCREASED DIFFERENTIAL PRESSUREINCREASED DIFFERENTIAL PRESSURE
TABLES SHOWING MAXIMUM DP FOR
RECOMMENDED PLATE THICKNESSES
– 304SS AND 316SS
– TEMPERATURES TO 150ºF (65ºC)
– INSTALLED IN BOTH FITTINGS AND FLANGES
• FLANGES ALLOW MUCH HIGHER DIFFERENTIALS
CHANGES TO API 14.3 - APRIL 2000
INCREASED DIFFERENTIAL PRESSURES
INCREASED DIFFERENTIAL PRESSURE
CONTINUED
INCREASED DIFFERENTIAL PRESSURE
CONTINUED
SOME SIZES ALLOW UP TO 1000” DP
– VALUES BASED ON PLATE DEFLECTION ONLY
– ANY OPERATIONAL EFFECTS ON ORIFICE FITTINGS NOT
CONSIDERED
ADDITIONAL TABLES FOR OTHER THAN STANDARD PLATE
THICKNESSES IN APPENDIX
CHANGES TO API 14.3 - APRIL 2000
INCREASED DIFFERENTIAL PRESSURES
CHANGES TO API 14.3 - APRIL 2000CHANGES TO API 14.3 - APRIL 2000
POSSIBLE
EFFECT OF
DIFFERENTIAL
PRESSURES
EXCEEDING
VALUES
SHOWN
INCREASED DIFFERENTIAL PRESSURES
GRANDFATHER CLAUSE
From API 14.3 Part 2, Par 2.1, April 2000
CHANGES TO API 14.3 - APRIL 2000
It is strongly recommended that a copy
of the new standard be obtained and
read thoroughlyas there are many
details not covered in this presentation
It is strongly recommended that a copy
of the new standard be obtained and
read thoroughly as there are many
details not covered in this presentation
CHANGES TO API 14.3 - APRIL 2000
THE ENDTHE END
CHANGES TO API 14.3 - APRIL 2000
TAP HOLE LOCATION TOLERANCE FROM 14.3
HOW TO MEET 14.3 WITH A 1/4” THICK PLATE IN A FITTING
DRILLED FOR A 1/8” THICK PLATE
4” & LARGER
LIMIT BETA
TO .6
If distance “S” between 2 fittings is 22D or more,
only the fitting nearest the orifice is considered
2.6.3.1
CHANGES TO API 14.3 - APRIL 2000
	CHANGES TO API 14.3 - APRIL 2000
	INTERNAL FINISH
	CATEGORYBare Meter Tubes continued,Shorter Lengths Possible For Specific Installations
	FLOW CONDITIONING
	Disturbance Tests
	Additional Tests
	CHANGES TO API 14.3 - APRIL 2000
	STAGGERED PRESSURE TAPS
	DIFFERENTIAL TAP LINE LENGTH
	INCREASED DIFFERENTIAL PRESSURE
	INCREASED DIFFERENTIAL PRESSURECONTINUED
	CHANGES TO API 14.3 - APRIL 2000
	It is strongly recommended that a copy of the new standard be obtained and read thoroughly as there are many details not cover
	THE END