Enhancing Safety Barriers for the Next Generation of GOM Drilling ...

nebraskaboomΠετρελαϊκά και Εξόρυξη

8 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

60 εμφανίσεις

Enhancing

Safety Barriers for the Next Generation


of GOM Drilling MODUs


Presented by

Yaneira Saud, CSP
, Principal Consultant I, ERM, Houston, TX


Kumar (Chris) Israni, Principal Consultant I, ERM, Houston, TX


A
major

process safety
accident

took place in
a drill rig in
offshore Gulf of Mexico (GOM) in
2010.
T
hree years after the event, there is debate

on how to incorporate lessons learned
from the incident
.

A key issue is

how to enhance
barriers

for fire, explosion and emergency
evacuation, per the United States Coast Guard (US
CG) investigation of the event
, even
before regulations evolve to more strict requirements
. The mobile offshore drilling units
(MODU) design is dictated by the Internationa
l Maritime Organization (IMO) and marine
Class requirements (e.g.
American Bureau of Shipping

[ABS]

and
D
et Norske Veritas [DNV]
.
However, a
ccording to the
USCG
investigation, the current
IMO
regulations
have

gaps and
any
new build MODU would have insuffic
ient barriers for
events following a loss of well
control resulting in loss of containment.

This paper
describes

a case study of how a major Oil and Gas Operator and
D
rilling
Contractor
teamed up to
positive
ly

influence the new generation of
GOM MODUs,
giv
en
contractual and schedule constraints.

Actions
had to be

taken from early contracting
specifications, as it is a fact that th
e cost of adequate barriers is relatively low when
specified upfront (early in the contracting process), instead of late remedial

retrofitting

to
meet regulatory requirements currently under consideration by regulatory bodies.

An
optimal number and depth of safety studies were requested, and technically supported to
assist decisions on:



Design and arrangement of gas detection and al
arm systems to identify
manual/automatic
emergency shutdown (
ESD
)

actions



Hydrocarbon f
ire and explosion rating of living quarters and other occupied spaces



Additional fire
(deluge system, electrical pump)
and escape

(protection of muster
areas, lifeboat specifications, fast rescue boat onboard)

criteria and equipment

This effort

also addressees
compliance with
the
Bureau of Safety and Environmental
Enforcement (BSEE) hazard analysis regulatory requirements in the
Saf
ety and
Environmental Management Systems (SEMS) Rule
,

as well as
demonstration of risk to as low
as reasonably practicable (ALARP) of the new build MODU design.