DO14 Flashcards
Objective 1
Clients & contractors to accept provision of:
Clients & contractors to accept provision enough qualified personnel.
Safe fit for purpose equipment properly maintained.
Adequate time for routine maintenance.
Objective 2:
Adequate time for personnel to become familiar with:
Work location
Equipment
Manuals & procedures
Risk assessments
Under water work
Reporting procedures
Objective 3:
Adequate time for:
Emergency exercises.
What is the scope of the DO14
Surface supplied
Air
Nitrox
Mixed Gas
Closed bell
Saturation
What is the legal status of the DO14?
No legal status. Guidelines in lieu of / or supplementary to local law.
Jurisdiction of code:
> 12 nm limit
< 12 nm limit in support of oil & gas or renewable energy sector.
Exclusions <12nm
Civil
Inshore
Harbour
Some regions have local laws and regulations which supersede DO14
True or False?
True
What other guidance bodies other than IMCA (DO14) do contractors need to be aware of?
IMO
IOGP
DMAC
What is FMEA / FMECA
Failure Mode Effects Analysis
Failure Mode Effects Critical Analysis
What is a DMS?
Diving Management System
What does the DMS cover?
Health
Security
Safety
Environment
Quality
What is a DPP and what’s involved?
Diving Project Plan
- Proceedures
- Hazard identification
- Risk assessments
What are the roles and responsibilities of a diving contractor?
DMS
DPP
Insurance
Risk assessments
Contingent & emergency
MOC
Safe place of work
Plant & equip maintain
Sufficient personnel
Valid medicals & certs
Site inductions
Brief on DPP given
Records kept
Incident reporting
First aid & medical
Appointments in writing
Compliance regs / standards
Who are the responsible persons?
OMT
Installation manager
Vessel master
DPO
What must the agree on before a saturation campaign?
Provision of facilities and information for hyperbaric rescue.
Agree to extend all reasonable support to dive supervisor in the even of emergency.
What does this include?
Location LSP
Location HRF
Lifting / transport HRU
Emergency choppers
Medical support
What are some of the other considerations?
Subsea facilities
Intakes and discharges
Gas flares
Remote start equipment
Isolation and barriers
Diving contractor needs to be notified in writing by the client exact details of work and worksite to create risk assessments.
True of False?
True
Client has to ensure what?
Sufficient time and facilities for site specific familarisation & training.
SIMOPs won’t affect operation
Permit to work system in place.
What does client need to provide risk assessments for?
Hazardous substances
- Drill mud
- Effluent
- Chemicals
- Impressed current andoe system
- Radiation sources ie: NORM
What is the role of the offshore manager?
Overall responsibility of project:
Ensure DPP is followed
Ensure applicable laws and regulations adhered
Ensure personnel are:
- Qualified
- Competent
- Follow procedures
What is the role of a Superintendent?
Diving contractors representative if no OM.
Acts as offshore project manager
Co-ordinates dive sups
Ensures compliance with DPP and local reg / law
A Superintendent can run a dive even without a letter of appointment because he is in charge.
True or False?
False.
A letter of appointment is required.
If there is no OM or superintendent the dive supervisor is the contractors representative.
True or False
True
The dive supervisor is the only person who can start a dive.
True or False
True
The diving supervisor is the only person who can end a dive.
True or False
False.
Operational or operational reasons:
Captain
OM
Superintendent
Can end the dive
Responsibilities of a dive supervisor:
Check certs and fitness to dive of divers.
Familiar with procedures and dive plan.
Check equipment properly maintained and certified.
Ensure hazards are understood and in JSA
MOC if required
Ensure compliance to DMS
Adhere to permit to work system.
A supervisor should have direct comms to the divers at all times.
True or False
True
It is ok to hand over the comms if the supervisor is in the room to someone who’s not a letter appointed supervisor and signed onto the log.
True or False
False.
What are the responsibilities of the divers?
To inform supervisor if not fit to dive.
Inform of medication use
Ensure they understand the dive plan
Know routine emergency procedures
Report medical issues or symptoms post dive
Report all near miss accidents
Keep log books up to date
What considerations would you take during preparing a deck plan?
Establish max deck load
Suitable lighting
Ease of access
Stretcher escape route
Fire fight arrangement
All sea fastenings should be NDT inspected?
True or False
True
Certification:
What are the three minimum codes of certification?
IMCA DO18
IMO Code of safety for diving systems
IMO Guidelines & Specification for hyperbaric escape systems
A fixed diving system classified by a class society and issued with what?
Diving system safety certificate
What are the 5 IMCA documents used for auditing dive systems?
IMCA DO11
IMCA DO23
IMCA DO24
IMCA DO37
IMCA DO40
What is IMCA DO11
Guidance for auditing dive systems
What is IMCA DO23
DESIGN Air
What is IMCA DO24
DESIGN Sat
What is IMCA DO37
DESIGN Surface Gas
IMCA DO40
DESIGN mobile / portable surface supplied
DSV’s and ROV also need to be audited to IMCA guidelines.
True or False
True
What is IMCA DO39
FME(C)A Guide for diving systems
(Failure mode analysis)
What does FMEA involve?
Failure Mode Effect Analysis:
Detailed risk assessments by competent personnel to identify and mitigate singe point failures
What is FMECA?
Failure Mode Effect Critical Analysis
Critical assessment of FMEA by plotting probability Vs severity to determine where remedial effort will be most effective.
Stand by power:
What are the following things to take into consideration when positioning a generator close to a diving system.
Vibration
Noise
Exhaust
Length of cable
Fire prevention
Ventilation
The diving project plan (DPP) should specify provision of suitable fire extinguishing system.
True or False?
True
Gas storage cylinders:
Each cylinder must be tested and certified.
True or False
True
Gas cylinders in an closed space must be?
Continuously monitored for oxygen levels in enclosed space.
In a confined space relief valves mus be what?
Plumbed overboard.
The contractor should check that the marking on the cylinder corresponds with the what?
the contents.
Gas has to be tested at source before plumbed.
Then tested on panel before given to diver.
Breathing gas:
Provision should be made for correct what in divers gas (3 things)
Correct flow
Correct temperature
Correct volume
Analysers:
In line analyser for divers gas should be where on panel
Last point down stream
Analysers can be cross connected (shared) between sources.
True or False
False
Oxygen:
Any breathing mixture above what is to be treated at 100% oxygen?
25%
Where should oxygen not be stored?
In a confined space
Any pipe work intended to carry over 25% oxygen need to be what before put into service.
Oxygen cleaned
What is the relevant IMCA doc with regards to oxygen cleaning for oxygen service?
IMCA DO31
Communications:
Black box recordings need to be kept for a minimum of?
24 hours
Under what circumstances are they kept longer?
After an incident
Breathing mix supply: What prevents uncontrolled loss of pressure?
Non return valves
Bell emergency equipment:
Bell emergency locator beacon is what frequency?
37.5 Hz
Surface intervention umbilical connection panel has what characteristic?
Internationally agreed common fittings.
How many hours independent life support is required in the bell by DO24?
24 hours
What is a mandatory requirement for a bell run with regards to emergency communications?
Through water comms
What are the requirements of a bell drop weight system?
Two stage release.
Released from inside.
A bell should be fitted with what to allow diver access to the bell in a lost bell event?
A stand off frame
Winches:
Man riding hydraulic and pneumatic winches require what brakes?
Primary and secondry
What type of gear are they not allowed to be fitted with in order to lower?
Pawl and ratchet that needs to be disengaged to lower
What is the testing regiment for winches every 6 months ?
6 Months
Visual examination
SWL function test
Static load test 1.5 x SWL
How far is the annual cut back on a man riding main winch wire?
Length from the spelter socket to just beyond the first sheave when the bell is just below the waterline
What is the testing regime every 12 months?
Cut back main lift wire to just past first sheave when bell is just below the water.
Test to destruction lift wire just past spelter socket.
Static load test 1.5 x SWL
Then:
Dynamic load test 1.5 SWL.
SWL tests is on critical area (Bell in water - length from socket to past first sheave)
What happen is if the test to destruction fails first time?
Cut back again and test to destruction.
If it passes 8:1 but breaks <90 % Max Breaking Force then rope to be discarded.
What is the required safety factor for a non rotational man riding winch wire?
8:1
How often does a man riding winch wire need to be pressure lubricated?
Every 6 months
How far does it need to be pressure lubricated?
To the maximum working depth of the bell.
If a winch wire has not been pressure lubricated every 6 months how often does it need to be replaced?
Every two years.
Basket / Wet Bell:
What are the 3 main requirements for divers in a basket / wet bell?
Be able to carry at least 2 divers uncramped.
Stand by basket to be able to deploy at least 1 diver.
Have a chain or gate to restrain divers.
What is the requirement of a stand by basket?
To be able to deploy and recover at least 1 diver.
Stricken Bell:
Is a full dive spread required for surface intervention?
No
Does the surface intervention diver require a stand by diver?
No
Bell:
What is the 7 things required of a diving bell?
Diver exit and egress without difficulty.
Means to lift unconscious diver into the bell in an emergency.
Doors required both sides to act as pressure seals.
Internal and external depth gauges for divers and supervisor.
Lighting and heating.
Adequate first aid kit.
Bell handling system to lock on and off in all conditions.
What 3 things are required of a bell handling system?
To be able to TUP in all conditions.
Lower and raise the bell.
Maintain depth without excessive lateral, vertical and rotational movement.
Hyperbaric escape:
What does HRU stand for?
Hyperbaric Rescue Unit.
Thermal trials are to be undertaken to what IMCA standard?
IMCA DO02
IMCA DO06
HRU is to be fitted with a suitable flange for mating at a HRF according to what IMCA Doc?
IMCA DO51
Hyperbaric Escape System Interface Recommendations
Therapeutic Chamber:
Can a surface supplied diving operation be conducted >12nm without a twin lock therapeutic chamber?
No
What is the minimum sizes of chamber after 1 Jan 2015?
60’’ / 1.5 meters
What does a 60’’ chamber require?
1800mm bunk with mattress.
ECU temperature control.
What is the smallest chamber allowed >12nm before 1 Jan 2015?
54’’ / 1.37m
Surface supplied 1 diver.
Maintenance Of Diving Equipment.
What IMCA doc is concerned with PMS?
IMCA DO18
Code of practice for the initial and periodic examination, testing and certification of diving plant and equipment
What are the key components of a PMS?
Describe necessary maintenance
Seek to avoid unforeseen malfunction through routine maintenance
Each piece of equipment assigned and asset number and records of maintenance kept.
Equipment Certificate Register:
What 6 categories can be found in the equipment certificate register?
LARS
Winches
Electrical systems
Pressure vessels
Plumbing & pipework
Umbilicals
Cylinders underwater:
What is required every 6 months?
External and internal examination.
Underwater cylinders:
What is required every 24 months (2 years)?
Internal & External
MWP pressure test
*Opt hydro 1.5 MWP
Underwater cylinders:
What is required every 48 months (4 years)?
Internal & external
MWP pressure test
1.5 MWP pressure test
Regular Cylinders:
What needs to be done every 6 months?
External visual only
Regular Cylinders:
What needs to be done every 2.5 years?
External
Leak test to MWP
Regular cylinders:
What has to be done every 5 years?
Internal & external
Leak test to MWP
* opt 1.5 MWP hydro
Lifting Equipment:
When should lifting equipment be examined by a competent person? (3 times)
First used
When moved
When repaired
Lifting equipment:
What tests need to be carried out before a piece of lifting equipment can be put into service? (2 things)
NDT testing
Load testing
How do slings, shackles and master links equipment need to be inspected for certification purposes?
Every 6 months
Lever hoists:
What IMCA document covers lever hoists?
IMCA DO28
Cranes:
What IMCA doc concerns inspection of crane wires?
IMCA M194
Vessel of opportunity for diving:
What IMCA document provides guidance to the above?
IMCA DO35
QUALIFICATIONS:
What are the 3 responsibilities of a tender?
Understand dive technique
Emergency procedures including line pulls.
Understanding method of deployment
Qualifications:
What is a diver required to provide on request?
Original copies of dive qualifications and in date diving medical
DDC:
Who is qualified to operate a DDC?
Divers
LST
Supervisor
DDC:
Should divers be assessed as to their level of competence in operating the chamber?
Yes
What is the IMCA doc for nitrox diving?
IMCA DO48
What should supervisor ascertain about a diver before committing him to a nitrox dive?
Previous documented experience
Completion of company familiarisation if no experience.
What IMCA doc for the competence of deck crew / riggers / crane ops?
IMCA COO2
What is the IMCA doc for Sup and LST certification schemes
IMCA DO13
Stand-by Diver:
How many stand-by divers / diver are required?
1 stand by for ever 2 divers.
Dressed in on surface.
Mixed gas stand-by:
Where should a stand-by diver be <50 msw.
Dressed in on surface
Mixed gas stand-by:
Where should a stand-by be >50 msw
In water stand by that does not leave the wetbell.
2nd stand by on surface who doesn’t need to be dressed in.
Surface intervention stand-by diver:
Does he need to have his own stand-by diver?
No
Life Support:
Can a DDC be operated by divers under supervision?
Yes
Life support:
How many life support staff minimum per shift?
Two.
LSS & LST
Life support:
Can a closed bell supervisor stand in for an LSS?
Yes
Life Support:
What is an ALST tasked with?
Tasks outside of sat control.
What is the minimum team size for air diving?
5
What is the minimum team size for surface gas diving?
6
what is the minimum team size for saturation diving ?
9
Work periods:
What is the maximum work periods recommended for a bell run?
8 hours seal to seal
6 hours in the water
2 - 4 until refreshment
12 hours unbroken rest
What are the recommended saturation periods according to DMAC 21?
28 days / equal time
Min 50% time out or 10 days which ever is lesser.
3rd sat = time out not shorter than duration of longest sat.
> 200m 28 days off mandatory irrespective of duration.
What does DMAC 21 recommend to be the maximum number of days in sat per year?
182
What is DMAC15
Medical equipment to be held on a dive site.
What are the provisions made for the medical kit held on the dive site? (3 things)
Stored in a sealed container
Labelled and in date
Regularly inspected by a competent person
What is M.E.R.P?
Medical Emergency Response Plan
What should a M.E.R.P advocate?
Stabilisation and decompression on I.P
Vessel to nearest port
That a project specific response plan exist
What other things should be provided in the M.E.R.P?
Diving duty doctor available 24/7
Minimum chamber diameter 1.8m
What are some of treatment equipment to be available according to DMAC15 for sat?
Necessary gas supplies & gas powered ventilator
Suction system (not manual)
Free flow hood for therapeutic gas
Addition lighting
Telemed
Sat rated AED
Dive medicals:
When should a diver get a new dive medical within?
30 days prior to expiry.
New date will commence from expiry date.
Valid for 12 months
What is the responsibility of a diver?
Inform not fit to dive.
Inform of medication
Record DCI’s in logbook
Notify supervisor of recent DCI
What is the responsibility of a diving supervisor?
Ensure predive medicals are done within 24 hours of diving.
Ensure post dive medical carried out.
As divers in hat if they are fit to dive before diving for back box
Diving contractors responsibilities are what with regard to medical treatment.
Provide a duty doctor
Telemed and suitable means of transferring patient information
Provided necessary medical equipment
Diver not to be decompressed until stable
Have a M.E.R.P
Does a diving doctor or medic need a diving qualification to get blown into sat?
No.
Do require to be medically examined and certified fit.
It is acceptable to blow down any person by themselves?
No
DPP needs to specify supervisor needs to be able to monitor divers breathing, and receive verbal reports as to their condition.
True or False?
True
Seismic Operations:
What are the DMAC docs concerned with seismic operations?
DMAC 12 & DMAC 06
What are the symptoms of seismic disturbance to divers?
Dizzy
Blurred vision
Light headedness
Disorientation
What seismic frequency above the range of human hearing?
> 250 KHz
Safe distance 10m
Above what frequency are hard hat divers considered safe from seismic operations?
> 500 Hz
Under what frequency is seismic operations considered detrimental to divers?
<500 Hz
What is the audible threshold for divers in frequencies <500 Hz?
40 dB
Under how many kilometers are there known to be affects from seismic operations?
<27 kilometers
DMAC 12 recommends under what distance is it good practice to notify all parties of seismic activity?
45 km / 28 nm
DMAC 12 recommends under what distance should a joint risk assessment be carried out?
30 km / 18.6 nm
Seismic operations should be terminated when?
If it interferes with communications
Considered to exceed acceptable exposure limits
Induces discomfort
Places diver at risk
Proximity to chamber:
After no deco dive <10m
20 mins proximity for 1 hour
Proximity to chamber:
Air deco dive
Multiple assent
Satuation
20 mins proximity for
4 hours…
Then:
2 hours proximity for 12 hours
Flying after diving:
No DCI:
Air no stops <60m
<600m 2 hours
>600m 18 hrs short half
24 hrs long haul
Flying after diving:
No DCI:
Deco dives
<600m 12 hours
>600m 24 hours
Flying after diving:
No DCI:
Saturation
<600m 24 hours
>600m 48 hours
Flying after diving:
DCI incident:
Immediate treatment and resolution
<600m 24 hours
>600m 72 hours
*no immediate resolution Diving Doctor to advise
A divers hearing is more sensitive in heliox
True or False?
True
What can be done to reduce noise in the chamber (gas in gas out)
The fitting of silencers
According to the European regulation for pressure vessels for human occupancy (EN 14931), the average sound level should not exceed ……. dB(A) at treatment pressure with (maximum) ventilation on, and ….. dB(A) during compression and decompression
70 dB chamber at depth
90 dB during blow down.
Hygiene:
What are the two most common bacteria found in sat?
Pseudomonas
Fecal Coliform
(poo particles)
Where psuedomona bacteria come from?
Originates both from fresh and salt water
How many towels should a sat diver have to dry himself?
Two.
One for head.
The other for the body
What is the recommended temperature of washing machine for sat laundry?
> 85 degrees
How often should a diver see a dentist?
At least once a year
Oral nasal in the hat should be washed out with?
Bottled water
Hats should be sprayed with an antibacterial agent between uses.
True of False
True
How often should prophylactic ear drops be used by a diver in sat?
Twice a day
After each shower
You should clean a chamber from bottom to top.
True or False?
False
From top to bottom
How long do you leave BIB’s that have been sprayed to disinfect before drying ?
Ten minutes
Aerosol spray bottles should not be used when cleaning a chamber why?
Aerosol disinfectants are respiratory sensitisers
How often should a toilet and sink be cleaned in sat?
Once a day
How often should chamber walls and bulk head be cleaned?
Twice a week
How often should shower heads be replaced in sat?
twice a week
Should the deck plates be lifted whilst in sat?
No
Pot hot water in saturation should be at least what temperature?
> 60 degrees
Sample and testing of Pot water in sat should be on the PMS.
True or False?
True
Operational Planning:
What is a DPP?
Diving Project Plan
DPP should be in place before diving starts.
True or False
True
What kind of things make up the DPP?
Risk Management
Roles & responsibilities
State regulations
HSE guidelines
S.M.S & bridging docs
Adverse weather policy
Mob / Demob plan
Risk assessments
Work procedures
SIMOPs procedures
MOC
and more….
Dive supervisors, divers and project team are to have ready access to the DPP.
True or False
True
What are two of the risk management categories done by the project team ashore to create the DPP?
HAZID / HIRA risk ID to develop procedures.
Contingency & emergency plans.
Who attends pre job HIRA’s
Project engineers, dive personnel and client.
Before mobilisation what is held offshore personnel?
Project familiarisation
A MOC needs to be reviewed and accepted by who?
All parties:
Client
Project engineers
Dive supervisors
A MOC is needed for any deviation from from the project procedures.
True or False
True
What should a dive plan include?
Brief for divers
Tasks to be performed
Equipment required
Hazards identified
Precautions taken
Shift hand overs should be kept as records.
True or False
True
Records should be kept of crew familiarisations.
True or False
True
A risk assessment is required before a demobilisation.
True or False
True
SCUBA is allow offshore in certain circumstances.
True or False
False
No recommended under IMCA DO33
Are surface swimmers considered appropriate?
No.
Under IMCA DO04 / DO12
What is the nitrox EAD formula?
(%N2 x MSW+10) / 79 (-10)
Surface supplied:
A free board of less than how many meters requires a risk assessment?
<2m
Includes:
Potential obstructions
Which method best
How far does a dive ladder need to go beneath the surface?
2m
What is the maximum climb up a diver ladder that is acceptable?
2m
What hand holds does a dive ladder require?
Sufficient hand holds above the water for diver to easily step on deck
If a ladder is used what else needs to be provided?
A dedicated davit or crane for unconscious diver recovery
with a freeboard of over 2 meters what other means of entry & egress are to be used?
Either dive basket or wet bell
Mixed Gas Diving:
What are the guidelines for a wet bell?
- To carry two divers uncramped.
-Suitable hand holds.
Means to hold unconscious divers head above the water.
Secondary lifting point from main lift wire
Load tested to 1.25 SWL in last 12 months.
Max weight in air with two divers marked on side of wet bell.
What is the minimum OBG requirement for a wet bell?
7m3 air / diver
7m3 heilox / diver
What are the required features of a mixed gas panel?
Main and secondary supplies for all gases.
What is required in the wet bell gas distribution panel?
No return valves between divers
If an in water stand by is used an the OBG be counted as a secondary supply in an emergency?
Yes
What is the max mixed gas in water deco <50m?
<100 minutes deco
What is the max surface gas bottom time >50m?
30 minutes
What is the max recommended depth of mixed gas diving?
75 msw
What IMCA doc deals with mixed gas diving?
IMCA DO37
What needs to be in done before diving around intakes or outfalls ?
Risk Assessment
Mechanical isolation
Permit to work
What AODC doc deals with limited visibility?
AODC 34
What considerations does a diving supervisor to be kept in mind for working in restricted visibility?
Rescue of a diver or bell who surfaces in an emergency
Does the DPP need to state a cut off point for working in bad visibility?
Yes
What AODC doc deals with working in currents?
AODC 47
By AODC 47 what is the cut off for working mid water air diving?
0.8 knots
1.0 knots observation
What is the AODC47 cut off for working in current on bottom?
0.8 knots regular
1.0 knots light work
1.2 knows observation
What is the AODC 47 cut off in mid water sat?
1.0 knots
1.2 knots light
1.5 knows observation
What is the AODC 47 cut off for diving on bottom in sat?
1.2 knots
1.5 knots light
1.8 observation only
ROV Ops & Diving:
Does a risk assessment need to be done for diver / ROV SIMOPs?
Yes.
Can an ROV have no thruster guards when working around divers?
No.
Must have
Does the DPP need to state the mitigations for ROV working around divers?
Yes
What is the IMCA and DMAC doc’s for water jetting?
IMCA DO49
DMAC 03
What is the IMCA doc for lift bags?
IMCA DO16
Does the DPP need to address the risks of using abrasive discs under water?
Yes
Oxy-arc cutting:
DPP requires precise instructions regarding operation procedure for cutting and burning.
True or False
True
What IMCA docs are relevant to cutting and burning?
IMCA DO45
Electricity underwater
IMCA DO03
Oxy arc cutting
When diving from a structure a specific evacuation plan is required.
True or False
True
What IMCA Doc deals with diving from a fixed structure?
IMCA DO25
DP Diving:
DPP to take practical steps to eliminate hazard posed by thrusters.
True or False
True
If thruster hazard can not be eliminated then send the diver anyway.
True or False
False
DPP needs to ensure that DP vessel meets industry technical and operating standards.
True or False
True
What is the shortest DP trial allowed
30 minutes
What is the IMCA doc that deals with design and operation of DP vessels?
IMCA M103
What IMCA doc deals with minimum gas quantities ?
IMCA DO50
How many weeks supply of cal gas should be onboard?
3 weeks
What is the minimum gas for sat according to the DO50
Intended bell run or bell runs with a bottom turn around. Plus same again in reserve.
Enough to blow system down. Plus same in reserve.
Enough for metabolic and deco. Twice as much held in reserve in separate banks.
3 weeks cal gas.
What is the the maximum and minimum PPo2 of a bailout?
1.4 bar
400mb
What IMCA Doc deals with the colour coding of gas cylinders?
IMCA DO43
As per IMCA DO43:
Does a test certificate need to accompany the gas delivered?
Yes
What should be done with gas that has been delivered before it is put on line?
Tested before being plumbed in.
Tested at panel before being delivered to the diver
What are the 5 determining factors with regards choosing maximum umbilical length?
Distance to nearest thruster.
Depth V’s bailout
Distance to job from bell
Trunking size
Condition of worksite
In an emergency the bell man can pay out more than the predetermined maximum.
True or False
True
How much longer should a bellman’s umbilical be V’s divers?
2m
What is the IMCA doc is for diving on DP?
IMCA DO10
What is the recommended duration of a bell run
8 hour seal to seal
6 hours in the water
>2 <4 hrs refreshment break.
What is the What DMAC document recommends bell run duration?
DMAC D20
Duration of bell lock outs.
IMCA DO10:
What is the minimum horizontal distance scaffolding can take place from a diving operation?
Horizontal distance = 1.3 x depth
What IMCA doc deals with overboard scaffolding?
IMCA D007
What IMCA doc deals with diving in contaminated waters?
IMCA DO21
What IMCA doc for diving around pipelines?
IMCA D006
What is the minimum requirement when flooding a pipeline subsea with a diver?
A risk assessment.
A diffuser must be used.
What is the IMCA doc for diving on well heads?
IMCA D019
What is the IMCA doc for diving off in and around a structure?
Isolation and intervention: Diver access to subsea systems
What is the maximum safe current and voltage of an impressed current anode system?
40mA
30 Volt max
What IMCA doc deals with isolation and intervention?
DO44
When diving under flares what 4 things need to be taken into account?
Heat
Fallout of material
wind speed & direction
Safe areas
What are 3 types of gas detection systems in a dive bell?
Hypergas
Colourmetric tubes
Crocon H2S meter
Hazardous substances:
Is the client obligated to provide information to dive contractor?
Yes in writing.
What IMCA doc deals with NORM?
IMCA HSSE 024
What is NORM?
Naturally Occurring Radioactive Material
Where can NORM be found? (4 examples)
Pipelines
Subsea trees
Manifolds
Sea water pumps
Client needs to provide information in writing about NORM risks on site.
True or False
True
What IMCA doc deals with SIMOP’s?
IMCA M203
What is a SIMOP’s safety management interface document?
Shows what activities can take please concurrently - and what precautions need to be taken.
What IMCA doc provides guidance on concrete mattresses?
IMCA DO42
What are the 5 requirements of a concrete mattress lifting frame under IMCA DO42?
Tested & Certified
Lift wires swaged with steel ferrels not alloy.
High viz paint
Split pins for all shackles
Long soft slings
Permit to work:
What is the purpose of a permit to work with regard to isolations?
Ensures that plant and equipment are isolated before diving starts
Environmental conditions:
Does the DPP require an adverse working weather policy?
Yes.
With defined cut off limits
What AODC doc gives guidance to working in currents?
AODC 47
What is the IMCA doc that gives guidance on daughter craft?
IMCA DO15
What is the DO15 guidance on daughter craft gas supply and panel?
Minimum 3 x 45 liter bottles at 150 bar.
Manifolded to give diver primary and secondary supply.
Separate circuit for each diver.
Separate depth gauges.
HP & LP gauges
Black box audio
Divers equipment diving off daughter craft?
Helmet or full face mask
Two way comms
Bailout
Harness
Max depth 50m with RA.
<30m standard limit.
Means to enter and exit water safely.
What are the other requirements of a daughter craft?
Not >15 mins from ship
Line of sight at all times
First aid kit and o2
Minimum gas for daugher craft ops?
Enough for planned dive and any unplanned deco.
Enough gas to deploy stand-by diver.
What IMCA doc deals with diving from a small vessel?
IMCA M189
Common marine inspection small work boat
Requirements of a small boat when diving?
<12m Alpha flag
> 12m Alpha flag
Ball Diamond Ball (day)
Red White Red (night)
Dedicated FRC available to assist.
15 mins away from mother craft.
Dedicated look out on mother craft.
What is the IMCA doc for diving off fixed platforms?
IMCA DO25
What are some of the considerations when diving on fixed platforms?
Space & weight limits
Hydrocarbon safety
Possibility of power out
Launch & recovery height
What are some examples of fixed platforms?
Jack up barge
Drill rigs
FPSO tankers
What are some examples specialist locations under IMCA DO10
MSV
Barge
Specialist vessel
What is the IMCA doc for DP?
IMCA M103
What is FMEA?
Failure Mode Effect Analysis
IMCA M166
What are are the 6 examples of DP sensors?
DGPS
Tautwire
HPR
Artemis / Radius
Fan beam
It is the responsibility of the dive supervisor that the launch and recovery procedure exists - and that is it understood by divers and techs.
True or False
True
It is the responsibility of the supervisor to ensure launch and recovery systems used for diving operations have been tested and certified by a competent person.
True or False
False.
It is the responsibility of the company.
Hyperbaric evacuation:
What is a HRU?
Hyperbaric escape unit.
SPHL
HRC
What is an LSP?
Life support package
What is an HRF?
Hyperbaric Reception Facility
What is the the minimum endurance of an HRU?
72 hours
What IMO doc deals with HRU?
IMO A692(17)
How many phases are there to a hyperbaric escape?
4
How long max should it take to make the HRU ready to escape?
Phase A:
15 mins
Get divers and take a seal
How long to launch HRU and clear?
Phase B:
30 minutes max
>100m away from boat
What is the intended time it will take to get to the safe haven?
Phase C:
75% of HRU endurance
What is the final phase of a hyperbaric escape?
Phase D
Decompression of divers
A vessel with a single HRU should not be along side anything that would prevent its launch.
True or false
True
Evacuation planning:
Decision to use LSP & HRU or HRU & HRF should be risk assessed with client involvement.
True or False?
True
What are some of the considerations as when risk assessing hyperbaric escape?
Work / Storage depth
Prevailing weather
Distance to safe haven
HRC or HRF
Medical needs
Level of support for hyperbaric escape should be ascertained from the client in the beginning.
True or False
True
What IMCA doc deals with hyperbaric esacape systems?
IMCA DO52
What DMAC doc deals with accelerated decompression?
DMAC31
What considerations are there to warrant using accelerated deco?
Shallow storage depth
No excursions last 24hr
What is the minimum endurance of a lost bell?
24 hours
What is the minimum endurance of a habitat?
48 hours
Contingency plan for a lost bell / emergency recovery should be risk assessed and in place in the DPP.
True or False
True
What is the IMCA doc for Hyperbaric Evacuation?
IMCA DO52
What are evacuation considerations for surface supplied diving?
Omitted deco
Re-compression
Medical treatment
o2 during evac
Doctor on call
DMAC 15 equip
Emergency deco
Sat Evacuation:
What is the minimum chamber size for medical treatment in sat?
1.8m
What are the requirements of the designated medical bunk?
Have a mattress
Waist high
Tilt 30 deg both ends
Apart from the medical bunk, what else needs to be provided during medical treatment in sat?
Tray or surface for medical instruments.
Convenient med lock 300mm min diameter.
Suitable extra lighting.
Sink facilities with elbow or foot taps
Good comms close to casualty
According to IMCA DO52 how long should it take to get the divers into the HRU and be ready to launch?
15 minutes
How long should it take to launch the HRU and be >100 m away?
30 minutes
What is the maximum recommended distance away from the HRF / Safe haven?
54 hours
75% of endurance
Under DMAC 28 what is the minimum chamber diameter for medical treatment?
1.8m
Under DMAC 28 what is the requirements of a medical bunk?
Have a mattress
Be waist high
Access from on side
30 deg tilt both ends
What else needs to be provided in the chamber under DMAC28?
DMAC 15 med kit
Suitable doc on call
Medical lock min 300mm
Comms close to casualty
Direct comms to doc
Sink with elbow taps
Contractor should develop emergency training procedure scenarios, train and test regularly.
True or False
True
What is a contingency centre on board?
A room maintained with adequate facilities, relevant docs and communication facilities for the contingency team
A diving project plan needs to be in place before the commencement of any diving.
True or False?
True
What is the Safety Management System?
Reflects and defines the safety management interface between client / diving contractor and subcontractors.
What is a bridging document?
A document that brings separate client / contractor safety managements together under an umbrella document called a bridging document.
Is the SMS part of the DPP?
Yes
What are some of the key components of a SMS?
Project title and revision
Operational procedures
MOC
Risk Assessment
Permit to work
Incident reporting
HES
Environ management
Where would you find the adverse working weather policy?
In the SMS
What are the components of a risk assessment?
Initial assessment H/M/L
Mitigation to ALARP
Responsible persons
Diving contractor can self audit to IMCA standards.
True or False
True
With what do you perform a diving system review?
FMEA
FMECA
Who is a level one DESIGN auditor ?
Dive supervisor / LSS
Who is a level two DESIGN auditor?
Dive tech
Contractor Tech
Specialist 3rd party
Who is a DESIGN level 3 auditor?
Chief engineer
Certified to IMCA C002
Who is a category 4 auditor?
Manufacturer
Supplier
Tech of supplier
DPP requires that there be a management of change procedure.
True or False?
True
What is an MOC for?
Management of unplanned events
MOC requires what?
Review of change
Risk assessment
Formal review
Aproval
Is reporting near misses and incidents a requirement of the DPP?
Yes.
What is the equipment certification register?
DPP requirement for copies of all relevant test certs, design docs and specifications to be kept on site.
What is a requirement of the DPP?
Operating procedures
Site specific R.A
Diving techniques
Contingency
Chain of command
What are the minimum documents?
Operations manual
System tech manual
Dive log
PMS
Repair and maintenance
Spares inventory
Pre/post dive checklist
Local legislation takes precedence.
True or False
True
