CONSOLE EP'S

Question 1

EP1: SYMPTOMS

SUDDEN LOSS OF HP AIR SUPPLY TO DIVER CIRCUIT DUE TO DAMAGED TOPSIDE SUPPLY SYSTEMS OR COMPONENTS.

Answer 1

SYMPTOMS: sound of HP air escaping, low pressure
less than 350psi readings.

cause: cylinder burst disc ruptured, cylinder o ring failure, HP bleed valve not seated properly, HP1/2 block failure, HP whip failure.
note: if HP air supply is no longer available to the divers circuit, open the appropriate cross connect to provide air from circuit.

This may be the case w/ a whip failure after the HP1/2 block to the console assembly.

Question 2

EP1: SUDDEN LOSS OF HP AIR SUPPLY TO DIVER CIRCUIT DUE TO DAMAGED TOPSIDE SUPPLY SYSTEMS OR COMPONENTS.

ACTIONS FROM TOP SIDE

Answer 2

1- identify source of failure secure affected leak (if possible).
2- if cylinder burst disc rupture or o ring failure- isolate affected cylinder- shift to secondary cylinder and verify air pressure. Swap cylinder- continue w/ dive.
3- if whip leak before HP1/2 block- secure HP1/2 and shift to secondary air supply and verify air source.
4- if whip after HP1/2 then secure HP air source, ensure shift to cross connect and verify air source.
5- if unable to replace whips or cylinders then have diver check umbilical, clear and prepare to abort the dive (if needed).
6- abort dive when divers are ready to travel.

Question 3

EP1: SUDDEN LOSS OF HP AIR SUPPLY TO DIVER CIRCUIT DUE TO DAMAGED TOPSIDE SUPPLY SYSTEMS OR COMPONENTS.

ACTION FROM DIVERS

Answer 3

1- if directed by topside- open the EGS, notify topside and report bottle pressure. Clear umbilical, abort dive.
2- if topside is able to replace whip or failed cylinder, then prepare to shut EGS valve if directed by topside to verify re established normal supply and continue dive as needed.

Question 4

EP2: SYMPTOM

LOSS OF AIR, NO WARNING OR SOUND OF VENTING AIR

Answer 4

SYMPTOMS: DIVERS notices increased breathing resistance or lack of breathing air.

PROBABLE CAUSE: improper adjusted dial a breath, supply cylinder low, umbilical supply shut, served or pinched umbilical.

Question 5

EP2: LOSS OF AIR, NO WARNING OR SOUND OF VENTING AIR

ACTION FROM TOPSIDE

Answer 5

1- check ALP 1R, 2G, 3Y to ensure umbilical supply salve properly aligned (OPEN)
2- check HP supply pressure (greater than 400 psig) if necessary shift to secondary air.
3- check LP supply pressure (350-375psig)
4- instruct diver to go EGS.
5- instruct diver to check umbilical clear and prepare to leave bottom. abort as needed.

Question 6

EP2: LOSS OF AIR, NO WARNING OR SOUND OF VENTING AIR

ACTION BY DIVER

Answer 6

1- adjust dial a breath (if available)
2- shift to EGS (report psi)
3- clear umbilical and prepare to abort dive report any air leaks to topside.

Question 7

EP3: SYMPTOMS

UNCONTROLLED LOSS OF AIR AT THE CONTROL CONSOLE.

Answer 7

SYMPTOMS: Air venting from the manifold over pressure relief valve.
PROBABLE CAUSE: reduces seat failure on regulator adjustment knob or failure of over pressure relief valve
NOTE: 1- a major failure of the HP reduces seat on the regulator adjustment knob (hand loader) will result in a free flow condition out the relief valve.
2- The HP supply daily shutter manually using the appropriate HP1/2 supply valve.
3- In addition the effected divers HP air can be secured and the appropriate cross connect can be opened to supply the diver w/ another divers supply during recovery.
4- if the source of the failure is at the over pressure relief valve, then air will escape until isolated to the relief valve or it is temporarily plugged.

Question 8

EP3: UNCONTROLLED LOSS OF AIR AT THE CONTROL CONSOLE.

ACTION BY TOP SIDE

Answer 8

1- source of failure of HP reducer seat on hand loader.
2- verify failure and attempt adjust regulator adjustment knob.
3- throttle HP1/2 as appropriate to maintain a reduced pressure to the diver between 350-400psi.
4- secure HP air and open cross connect to available air source, varify pressure.
5- if the LP AIR pressure drops below 350psi, have diver shift to EGS, report pressure.

note: if sour of failure is at over pressure relief valve:
1- isolate relief valve have diver shift EGS- record pressure.
2- if able to replace relief valve, do so, line up air- verify.
CONTINUE W/ DIVE.
3- if unable to repair failures, have diver check umbilical clear, prepare leave bottom. ABORT.

Question 9

EP4: SYMPTOMS:

ENTANGLED UMBILICAL

Answer 9

SYMPTOMS:
diver reports umbilical HOPLESSLY entagled.

note: standard practice is to deploy stby diver w/ second umbilical to attach to affected diver (if available).
XLDS emergency cylinder system interfaces using a quick connect fitting. An air cylinder can be used as a gas source as long as the diver is tied into the rescue diver or attached to a retrieval line.

Question 10

EP 4: ENTANGLED UMBILICAL

ACTION BY TOP SIDE

Answer 10

1- deploy stby diver w/ a spare umbilical and tools or quick connect EGS system w/ cylinder.
2- styb diver shackles in retrieval line or buddy line to the affected diver.
3- stby diver instructs topside to put diver on diver EGS system.
4- when instructed, stby diver disconnects the umbilical and reconnects to spare umbilical or additional EGS.
5- stby diver assists affected diver to surface/ abort dive.

Question 11

EP4: ENTANGLED UMBILICAL : ACTION BY DIVER

Answer 11

1- reports to topside tangled, requires assistance of stby diver.
2- remains calms and works w/ topside and stby to fix problem.
3- once clear abort dive.

Question 12

What do you do for a DEMAND REGULATOR FAILURE?

Answer 12

1- diver complains of breathing resistance or free flow of regulator.
2- sup instructs diver to do in water checks, - check shut egs, steady flow, dial breath, purge.
3- while sup checks top side for HP, LP line up.
4- crack steady flow if demand regulator failure due to breathing resistance.
5- go on EGS for free flow.
6- abort dive.

Question 13

what do you do if you lost you’re pnuemo?

Answer 13

1- switch pneumo
2- get diver w/ other diver
3- if single diver, drop a lead line, or use electronic means to check depth.
4- check umbilical for slack, take up slack.

Question 14

what do you do if you’re dive is experiencing flooded helmet?

Answer 14

1- instruct diver to remain calm
2- tilt head up right and crack steady flow
3- note: what category of water, abort dive to clean out hat.

Question 15

what do you do for diver complaining of increase breathing resistance?

Answer 15

1- instruct diver to check dial a breath.
2- check LP/HP line up
3- have diver check umbilical if it’s fouled, pinched. have top side look for increasing bubbles.
4- if pinched, have console operator increase LP 350 to 370 to push more air into diver, get him back to descent line and abort dive. (pending depth, you may want to save egs air).
5- if over pressure relief valve burst, cross connect and secure air.

Question 16

DIVER LOOSING AIR:

Answer 16

check air line up
have diver do in water checks
relief valve failure- throttle down hp1/hp2 block if hand loader fails.
relief valve burst- cross connect, secure air, verify pressure.
have diver go on egs, verify pressure, secure air. abort.

Question 17

LOSS OF COMMS

Answer 17

1- check hydrolinks 
2- line pulls
3- drs
4- bubbles
5- launch stby
note: to instruct diver to come up, send line pulls 3 and 4. Have diver give a one pull for okay as ascending.

Question 18

FOULDED TRAPPED DIVER

Answer 18

1- okay diver
2- can free self?
3- check air pressure, max depth
4- launch stby if need help.

Question 19

CO POISONING

Answer 19

1- diagnose problem while getting checking okay w/ other diver.
2- when they felt it, symptoms, what phase of the dive
3- check stby hat
4- switch secondary (ventilate ::20)
5- switch egs, verify pressure, secure console air, abort dive.

Question 20

DCS IN THE WATER

Answer 20

1- diagnose problem, check other diver.
2- what phase of dive. 
3- check console air
4- launch stby if single diver. 
5- or have other diver stay w/ affected diver, descend 10' feet. 
6- significant change if not, descend another 10'. 
7- remain :30. 
8- ascend multiply 1.5 
9- on surface 100% o2, transport, TT6