Hazardous Installations Directorate (HID)

HID semi-permanent circulars (SPCs)

Class	Definition
SPC/TECH/GEN/04	Prevention of falls from road tankers and tank containers enforcement standards
SPC/TECH/GEN/18	Corrosion under insulation of plant and pipework v3
SPC/TECH/GEN/35	Integrity of atmospheric storage tanks
SPC/TECH/GEN/40	International committee for regulatory authority research and development (ICRARD)
SPC/TECH/GEN/41	The use of floor scanning techniques for the examination of storage tanks
SPC/TECH/GEN/42	Well construction standards
SPC/TECH/GEN/43	Land use planning advice around large scale petrol storage sites
SPC/TECH/GEN/44	Environmental Impact Assessments
SPC/TECH/GEN/46	Risk based inspection (RBI) – A risk based approach to planned plant inspection
SPC/TECH/GEN/47	Integrity of pipework systems project – UK refineries
SPC/TECH/GEN/48	Proof Testing of Safety Instrumented Systems in the Onshore Chemical / Specialist Industry
SPC/TECH/GEN/49	Criteria document for Land Use Planning cases of serious public safety concern
SPC/TECH/GEN/50	Operator Response within Safety Instrumented Systems in the Chemical (Onshore), Oil & Gas (Offshore), and Specialist Industries

Class	Definition
SPC/TECH/SI1/03 previously SPC/TECH/LD5/03	Explosives use at mines
SPC/TECH/SI1/04 previously: SPC/TECH/LD5/04	Arrangements for drilling notifications & enforcement at onshore borehole sites
SPC/TECH/LD5/05	Idler roller nip hazards on heavy duty belt conveyors
SPC/TECH/SI1/11	Belt Conveyor Fatal Nip Hazards

Class	Definition
SPC/TECH/OSD/05	Acoustic leak detection
SPC/TECH/OSD/15	Safety case assessment – management of health & safety
SPC/TECH/OSD/18	Health & safety issues associated with change from dry gas to wet gas operations
SPC/TECH/OSD/20	Control of wells during intervention operations
SPC/TECH/OSD/21	Safe approach, set-up & departure of jack-up rigs to fixed installations
SPC/TECH/OSD/25	Temporary equipment offshore
SPC/TECH/OSD/30	Indicative human vulnerability to the hazardous agents present offshore for application in risk assessment of major accidents
SPC/TECH/OSD/31	Safety instrumented systems for the overpressure protection of pipeline risers
SPC/TECH/OSD/32	Tubular handling on the drill-floor
SPC/TECH/OSD/40	Emergency lighting on offshore installations
SPC/TECH/OSD/42	Guidelines for the planning and the undertaking of lifting operations in the offshore industry
SPC/TECH/OSD/43	Well examination schemes - commonly observed weaknesses
SPC/TECH/OSD/45	Understanding oil and gas wells notifications
SPC/TECH/OSD/46	Gas release hazards from gas-lifted oil wells
SPC/TECH/OSD/47	Safety case assessment – Diving
SPC/TECH/OSD/48	Offshore hydrocarbon release – investigation policy
SPC/TECH/OSD/49	Riser emergency shut down valve (ESDV) leakage assessment
SPC/TECH/OSD/50	Advice on acceptance criteria for damaged passive fire protection coatings on offshore installations
SPC/TECH/OSD/51 Previously SPC/TECH/OSD/37	Good and best practice offshore – collection of examples