Decommissioning and abandonment

Acronyms and Abbreviations

53

LRP LSD

Lead replacement petrol Level sensor device (survey) Limit state design Long and ultra-short base line

LUSBL

LW

Light weight Low water

LWM LWP

Low water mark

Light weight protected (cable) Lazy wave steel catenary riser

LWSCR

M

Monitors

MA

Mechanical advantage (pulley systems)

MAG MAOH MAOP MATIS

Metal active gas

Maximum allowable operating head Maximum allowable operating pressure Modular advanced tie-in system

max MBD MBF MBL MBP MBR

Maximum

Thousand barrels per day (see mmbd)

Minimum breaking force Minimum breaking load Minimum burst pressure Minimum bend radius Medium density polyethylene

MDPE MEG MFL MHR MHWN MHWS

Monoethylene glycol Magnetic flux leakage Multibore hybrid riser

Mean high water neap (tide) Mean high water spring (tide)

MIG

Metal inert gas (welding) (see GMAW) Thousandth of an inch (1 mil = 25.4 P m)

mil

mile min

1 mile ≈ 1.609 km

Minimum Minutes

MK

Mark

MLWN MLWS MMA MMBD mmboe

Mean low water neap (tide) Mean low water spring (tide) Manual metal arc (welding) Million barrels per day (see MBD) Million barrels of oil equivalent US Minerals Management Service

MMS

MMscfpd

Million standard cubic feet per day (gas flow) 1 MMscfpd ≈ 28 317 m³/day

Mn

Manganese

MODU

Mobile offshore drilling unit

MOL

Main oil line

MP

Medium pressure Marriage point

MPI

Magnetic particle inspection Military pipeline repair equipment Multifunction positioning transponder

MPRE

MPT MRS MRU MSL

Main riser section Motion reference unit

Mean sea level