OISD

REF.: Schedule IV / Schedule V of Offshore Safety Rules

SUB: Guidance note on ‘!!lication for "onsent# for $o%ile drillin& Ri&s

While applying for consent for mobile drilling rigs, the Operator is expected toinclude the information as mentioned below. Items, of Schedule IV / Schedule

V, which are not covered below are self explanatory.

In case of the information, which is provided in soft copy form in !"#, it$slocation should be clearly specified by giving the file name, section/sub%section

no. and page no. against the item no. in Schedule IV / Schedule V.

Refer: IV ' / V (

&he Safety 'anagement System S'S# should include the following criticalelements (

- )a*ard identification, control of ha*ards / establishing barriers

- !ontractor safety

- !ompetency of personnel

- 'anagement of change

- +mergency esponse -lans

- 'aintenance practices for ensuring mechanical integrity

- Operating procedures

- Incident reporting and accident investigation

- -erformance monitoring of S'S goals audits management review#

- egulatory reuirements in the form of legal register

- Organi*ational structure for )S+ management

In case of hired rig/company owned rig on O0' contract, S'S document ofboth the company and the contractor to be provided.

1ridging "ocument between the operator and the contractor, for interface

management, should also be provided.

Refer: IV )a

2eneral description of the type of structure li3e fixed leg, semi%sub, drill ship#dec3%wise arrangements broad operational features 4including as applicable#

rig movement and placement station 3eeping mooring5 broad classificationof material of construction of the structure measures for corrosion protection

policy of periodic inspection and maintenance of underwater structure.

2eneral arrangement drawings preferably in soft copy form#.

'ooring analysis report where applicable#.

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Refer: IV )% / V *a

1esides the general description and broad specifications of the rig and itssystems, with suitable layout diagrams, include details about the control

measures which are in place for identified ha*ardous situations ma6or accidentha*ards# such as uncontrolled well flow including shallow ha*ards#, fire

incidents, encountering )7S, stability where applicable#, collision etc.+Basically de$onstration of ris, control-.

)a*ardous area classification

ig 8fit%for%purpose status$ evidence in the form of valid certificate of class forintended serices.

Refer: IV ( / V

"etailed reuirements of wells# based on anticipated down%hole pressures,planned depth, well profile, well architecture, water depth etc# such as

anticipated maximum loads, well control euipment rating, etc is010iscapabilities of the rig which is proposed to be deployed.

Refer: IV a / V 23a

Information on well control euipment ( 1O- stac3, diverter assembly, ! and 9manifold and 1O- control unit etc. available on the rig.

Well control manual, including information regarding establishing and

maintaining barriers at all times 4during all phases of well drillingoverbalanced drilling and managed pressure drilling# and completion5 along

with contingency plans to restore barriers.

-olicy of periodic inspection 0 maintenance and ma6or over haul of well

control euipment.

Refer: IV 23 / V 24

"etailed emergency response manual to enable OIS" to verify that the

reuirements of all the rules under !hapter : are being met.

Refer: IV 22 / V 25

&hese include interface management between rig and platform when rig isdeployed on a production platform# % helicopter operation, crane operation,

vessel movement, diving operation etc in the vicinity of the rig.

On a rig, on stand alone basis li3e on an exploratory location / sub%sea well#,the precautions to be ta3en during operations li3e helicopter movement, vessel

movement, diving etc which fall under the ambit of simultaneous operations#are to be documented and be part of the operating procedures manual under

S'S. !opies of such procedures are to be submitted.

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