oil & gas safety api 2350
TRANSCRIPT
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Products Solutions Services
API 2350 4th
edition- how to apply on your site?
Overfill protection for storage tanks in petroleum facilities
Aboveground storage tanks
Only a safe plant is
economical
Slide 1 Ngo Consult AG Sales Support
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API2350 - how to apply on your site?
Overfilling occurs every 3300 filling operations
Ngo Consult AG Sales SupportSlide 2
According to Marsh Ltd. (2011) in the USA overfilling of atmospheric
storage tanks occurs once in every 3300 filling operations.
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API2350 - how to apply on your site?
API 2350 3rd edition (2005) independence required !!!
overfill protection for storage tanks in petroleum facilities
C.1.2 []overflow protection systems shall be independentof any tank gauging device or system. []
A.5.3 [] independent level switches must be installed for
single and two-stage level detector systems. [...]
[ ] Tanks equipped with a high-level detection device thatis independent of any tank gauging equipment. []
Slide 3 Ngo Consult AG Sales Support
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API2350 - how to apply on your site?
API 2350 4th
edition (2012) Categories
ATG
Display
ATG
Alarm
Control center
LAHH
Alarm
ATG Receipt
Category 1
Category 2
Category 3
Receipt
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Receipt
API2350 - how to apply on your site?
API 2350 4th
edition (2012) Categories
ATG
Display
ATG
Alarm
Control center
LAHH
Alarm
ATG Receipt
Category 1
Category 2
Category 3
Slide 5 Ngo Consult AG Sales Support
Fully attended
(min. 1h at the start + min. 1h after theend + periodically visual check on site)
Be aware: no manual hand dipping duringproduct receipt and until at least 30 min
after a product receipt!
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API2350 - how to apply on your site?
API 2350 4th
edition (2012) Categories
ATG
Display
ATG
Alarm
Control center
LAHH
Alarm
ATG Receipt
Category 1
Category 2
Category 3
Receipt
Slide 6 Ngo Consult AG Sales Support
Semi-attended(min. 30 min at the start + min. 30 min after the end)
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Receipt
API2350 - how to apply on your site?
API 2350 4th
edition (2012) Categories
ATG
Display
ATG
Alarm
Control center
LAHH
Alarm
ATG Receipt
Category 1
Category 2
Category 3
Unattended (ATG and independent level alarm high-highsensor)
Slide 7 Ngo Consult AG Sales Support
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Typically Category 1 tank only 1 transfer at one time
Ngo Consult AG Sales SupportSlide 8
Category 1 Category 2 Category 3
Typically 1transfer at onetime
Multiple tankscan be filledsimultaneously
Multiple tankscan be filledsimultaneously
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API 2350 4
th
edition (2012) Categories
ATG
Display
ATG
Alarm
Control center
LAHH
Alarm
ATG Receipt
Category 1
Category 2
Category 3
Receipt
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API2350 - how to apply on your site?
Definition of AOPS and MOPS
AOPS: An overfill prevention system not requiring the intervention of
operating personnel to function
MOPS: Manual overfill prevention system that depends on the
interaction of operating personnel to terminate the receipt. A person
physically turning a valve or pushing a button that remotely closes a
valve or turns off a pump are both manual operations. In MOPS, the
alerts and alarms provide the operating personnel with information
only.
AOPS can be added to all three categories
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API2350 - how to apply on your site?
If necessary, add AOPS on all categories
ATG
Display
ATGAlarm
Control center
LAHHAlarm
ATG Receipt
Category 1
Category 2
Category 3
AOPS
Receipt
Slide 11 Ngo Consult AG Sales Support
Logic Solver
Logic Solver
AOPS
Logic Solver
AOPS
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Overfill prevention is best achieved by use of AOPS
Section 4.1.1. of API2350
Prevention of tank overfills is best achieved by: A) Awareness of available tank capacity and inventory;
B) Careful monitoring and control of product movement;
C) Use of reliable instrumentation, sensors and systems; and
D) use of automatic overfill prevention systems (AOPS)where deemed
appropriate by a risk assessment and risk-based analysis.
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API 2350 (2012) independence of AOPS from the ATG
AOPS: to use automated overfill prevention system (instrument,
sensor, logic solvers and final element) you should follow Annex A
(existing site). Annex A is clearly requesting independence from the ATG.
Annex A states, that sensors with self testing diagnostic features
are preferred.
API2350 - how to apply on your site?
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API 2350 4th edition (2012): Annex A, which is normative
Annex A provides good practices for implementation of an automated
overfill prevention system (AOPS) for existing tank systems.
Annex A.3 Independence
The term independent means that theAOPS shall be separate from
any device or method used to measure, calculate or monitor tank
receipts.
The independent AOPS shall be designed and installed such that no
fault in the ATG gauging and monitoring system is capable of causing a
fault in the AOPS.
Annex A.4.2 Sensors
Sensors with self testing diagnostic features are preferred for all AOPS
tank level detection applications
API2350 - how to apply on your site?
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Competition: 2 in 1 feature?
Competitor claims to have two redundant electronic boards in one
radar/device, but they are still using the same/one antenna.
This is not allowed by API2350 for an AOPS
What happens, if moisture/water is in the electronic compartment
or having water built-up in the antenna?
What happens, if the radar beam is not reflected (e.g. liquid is
boiling, obstacles in the radar beam)?
What happens, if cables breaks?
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2 in 1 feature? Homogenous vs. diverse redundancy
Would you allow yourchild to do bungeejumping with redundant
ropes?
I prefer diverse redundancy(rope and net)I prefer diverse redundancy(rope and net) not API2350 request
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High-High tank response time
The high-high tank response time is the period of time required to
terminate the receipt of flow to a tank in response to reaching the
high-high tank level in order not to reach the critical high level.
Minimum High-High Tank (HH) Level Response Time(if not calculated)
Category Time in Minutes
1 45
2 30
3 15
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Different maximum working levels due to different
minimum level response time (if not calculated)
CH CH CH
HH
MW
Category 1 Category 2 Category 3
Best tank capacity utilization
with AOPS
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API2350 - how to apply on your site?
Best capacity utilization with AOPS system.
CH CH CH
AOPS=HH
MW
Category 1 Category 2 Category 3
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Simply reliable: Process safety from Endress+ Hauser
Layers of protection
Plant emergency response Emergency responselayer
Embankment Passive protection layer
Relief valve, rupture disk, F+Gsystem
Active protection layer
Safety instrumented system Emergency
Shutdown
Isolated protection layer
Trip level alarm
Alarm & operator intervention Wildprocess
Process control layer
Basic process control system or
DCS
Normal
process
Process control layer
Plant and process design Inherent safe plant
design
Mitiga
tion
Prevention
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API2350 - how to apply on your site?
Overfill prevention process (OPP) in API2350 4th Edition
Overfill prevention process (OPP) consists of A) management system
B) risk assessment system
C) defining operational parameters
D) requirements for procedures
E) equipment systems
Slide 22 Ngo Consult AG Sales Support
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Simulated Proof testing according API 2350
Proof testing of point-level sensor systems shall be conducted semi-
annually unless otherwise supported by technical justification (e.g.
PFDavg)
Proof testing ofAOPS components shall be conducted annually unless
otherwise supported by technical justification (e.g. PFDavg)
The testing should simulate an actual high liquid level situation as
realistically and as closely as possible; however, the test need not
require filling the tank above its maximum working level.
API2350 - how to apply on your site?
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Swivel plates for functional proof testing
API2350 - how to apply on your site?
External Swivel
plate for functionalproof testing
Swivel plate integrated in the
Endress+Hauser device forfunctional proof testing
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Free space radar SIL2 with reflector plate
Slide 25 Alain ENGELS
Floating Roof
oil
FMR51 (SIL2) DN100FMR51
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Total Olefins Antwerpen
2 different reflector types for different tanks heights
Alain ENGELSSlide 26
13m
20m
1000 mm version
700 mm version
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Simply reliable: Process safety from Endress+ Hauser
Proof testing without dismounting the device
Not necessary to interrupt or manipulate the production process for
partial proof test.
Recommendedproof testinterval
12 years 3 years 2 years
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Wireless communication is not allowed
Ngo Consult AG Sales SupportSlide 32
Annex A.3 Correct operation of the AOPS shall not require communications to or
from any location remote from the facility where the AOPS has been
installed. AOPS shall not rely on wireless communication to initiatediversion or termination of receipt.
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API2350 - how to apply on your site?
Key points of API 2350 4th Edition 2012:
Above ground storage tanks
Introduction of Tank Category 1, 2, 3
Differences between AOPS and MOPS
Independence of AOPS
AOPS for new sites follow ANSI/ISA 84.00.01-2004 (IEC 61511 modified)
Overfill Prevention Process
Proof testing
A HHLA sensor on a floating roof tank have to detect the oil, even if it
is above floating roof.
No wireless communication for AOPS
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Where can you get the complete standard API2350?
The standard itself is available for about 120 USD from the website of
API (www.api.org)
API2350 - how to apply on your site?
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Fixed roof solutions
API2350 - how to apply on your site?
Proof testing
Push button
activated test
generator High proof test
coverage
By proof test
simulation
Proof testcoverage
depends on
inspection depth
MountingFunctional Safety
TuningFork
Radar
Side Top
Topadjustable
Top
IEC 61508 design Proven in use
Suitable for SIL 2 / 3 Discrete output (relays)or 4..20 mA output
Proven in use Suitable for SIL 2/3 Internal redundancy (EOP)
Analogue output (4-20 mA) Switching in safetysystem or RMA422
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(External) floating roof failure scenarios
API2350 - how to apply on your site?
Damaged deck
May lead to lost and
deflected echo
depending on deck
position
Fails Safe
No Failure
Lost deck
May lead to someswitch pointdeviation (up to100 mm)
No failure
No failure
Snow cover
May lead to lost echo
Fails Safe
No Failure
FreespaceRadar
Tuning
Fork
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Simply reliable: Process safety from Endress+ Hauser
Buncefield report
Buncefield Report:http://www.buncefieldinvestigation.gov.uk
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Improve safety with state of art technology - Liquiphant
Simply reliable: Process safety from Endress+ Hauser
Explosion and fire at Buncefield OilStorage Depot - Five companies toface prosecution
http://www.buncefieldinvestigation.gov.uk/press/b08002.htm
Failed !!!
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Simply reliable: Process safety from Endress+ Hauser
Separation of process monitoring and safety function
Buncefield report, Volume 2, Annex 4, Recommendation 3, page 11
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Level measurement in Oil & Gas
Tuning Fork with diagnostics
Slide 40 Ngo
L l O l & G
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Level measurement in Oil & Gas
Furthermore, Safety Integrity Level
Slide 41 Ngo
L l t i Oil & G
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Level measurement in Oil & Gas
Vibronic level switches: 300.000 pieces/year
Measuring Principle
Liquiphant in practice
Liquiphipant in safety
Oil detection in pipes/sump pits Leakage detection presentation
Click the blue box
Slide 42 Ngo
Level measurement in Oil & Gas
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Operation Independent of Medium Properties
Level measurement in Oil & Gas
changingmedia
foam
air bubbles
built-up
pressure andtemperature change
plantvibration
viscosity change
turbulences
suspension
electrical properties
Slide 43 Ngo
Safety in the process industry
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New: Liquiphant Fail Safe FTL 8x
Safety in the process industry
Liquiphant FailSafe FTL80/81/85
Nivotester FTL825
4..20mA +LIVE-Signal
SIL3 MIN/MAX
4..20mA +LIVE-SignalOptional
Liquiphant FailSafeFTL80/81/85
PLC
Safety function
420 mA output with life signal (every 3
seconds self checking procedure) SIL 3 capable in single device
min/max safety function
proof test simulation with push-button proof test interval can be extended up to
12 years !
Slide 44 Jana Kurzawa / Hai-Thuy Ngo
Risk
reduction:~48.000
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Thats it relax now it was not that difficult :-D
API2350 how to apply on your site?
Slide 45 Ngo Consult AG Sales Support