Stone Safety

Recent Projects

Denton Water Treatment plant

St. Paul's Cathedral

Ripon Cathedral Lightning Protection

Lightning Protection for a listed building

Lightning protection

lightning protection and conservation

Lightning protection

Case Details

Client Name:

Company Name:

Case Name:

Date:

Case Address:

Case ref:

Risks being considered

Risk of loss of human life

Risk of loss of service to the public

Risk of loss of cultural heritage

Risk of loss of economic value

Environmental Influences

Lightning activity

Flashes to ground per km2 per annum:

Thunderstorm days/year:

Soil resistivity:

Location relative to surroundings

Object surrounded by higher objects or trees:

Object surrounded by objects or trees of the same height or smaller:

Isolated object: no other objects in the viciniy:

Isolated object on a hilltop or knoll:

Service line density

Rural:

Suburban-Height of buildings less than 10m:

Urban-Height of buildings ranging between 10m and 20m:

Urban with tall buildings - Height of buildings greater than 20m:

Structure definition

Shield at structure boundary

Non conducting - timber, masonry structure and cladding:

Non conduction with LPS level IV, III or II:

Non conducting with LPS level I:

Conductive frame with non conductive cladding:

Conductive frame with conductive cladding - typical door openings:

Conductive frame with conductive cladding - 100mm max opening:

Conductive frame with conductive cladding - 10mm max opening:

Structure fully clad with metal - no openings:

User specified:

Structure length (m):

Structure width (m):

Structure height (m):

Line Definition

Line identification

Incoming line type:

Unshielded cable:

Shielded cable with no bonding:

Shielded and bonded cable 5 < Rs <= 20 Ohms/km:

Shielded and bonded cable 1 < Rs <= 5 Ohms/km:

Shielded and bonded cable Rs <= 1 Ohms/km:

Internal wiring type:

Unshielded cable - routing precautions in order to avoid large loops:

Unshielded cable - routing precautions in order to avoid loops:

Shielded cable - 5 < Rs <= 20 Ohms/km:

Shielded cable - 1 < Rs <= 5 Ohms/km:

Shielded cable Rs <= 1 Ohms/km:

Presence of HV/LV transformer:

Service only:

Service with 2 windings transformer:

Connected equipment withstand:

1.5 kV - Socket outlets (electronic equipment):

2.5 kV - Sub-distribution board (electrical equipment):

4 kV - Main distribution board:

6 kV - Electricity meter:

Type of service:

Aerial:

Buried:

Height of line (m):

Length of line (m):

Location relative to surroundings:

Object surrounded by higher objects or trees:

Object surrounded by objects or trees of the same height or smaller:

Isolated object: no other objects in the vicinity:

Isolated object on a hilltop or Knoll:

Zone Definition:

Zone Identification:

Zone Location:

Inside the structure:

Outside the structure:

Type of soil or floor:

Agricultural:

Ceramic:

Asphalt:

Concrete:

Gravel:

Linoleum:

Marble:

Carpet:

Wood:

Risk of fire or physical damage:

None:

Low:

Ordinary:

High:

Explosion:

Fire Protection System:

None or risk of explosion:

Manual extinguishers or alarms:

Automatic extinguishers or alarms:

Shield at zone boundary

Non conducting - timber, masonry structure and cladding:

Conductive frame with non conducting cladding:

Conductive frame with conducting cladding - typical door openings:

Conductive frame with conducting cladding - 100mm max opening:

Conductive frame with conducting cladding - 10mm max opening:

Zone fully clad with metal - no openings:

User specified:

Loss of human life

Due to special hazard:

No special hazard:

Low level of panic (e.g. limited to two floors, occupants<100):

Average level of panic (e.g. cultural or sports events, occupants<1000):

Difficulty of evacuation (e.g. immobilized persons, hospitals):

High level of panic (e.g. cultural or sports events, occupants>1000):

Hazard for surroundings or environment:

Contamination for surroundings or environment:

Due to touch step voltage

Uninhabited:

Inhabited internal zone:

Inhabited external zone:

User specified:

Due to fire or physical damage:

None:

Airport Building:

Base Station:

Block of flats:

Cathedral:

Church:

Civic Building:

Commercial/office block:

Community centre:

Departmental Store:

Factory:

Farm Building:

Fuel/service station:

Gas compound:

Halls of residence:

Hospital:

Hotel:

Industrial Warehouse:

Large House:

Leisure centre:

Medical centre:

Museum:

Petro chem plant:

Care home:

Emergency service:

Power station:

Prison:

Railway station:

Ruin:

School:

Shops/shopping centre:

Sports stadium:

Substation:

Telephone exchange:

Theatre:

University:

Water treatment works:

Wind farm:

User specified:

Due to overvoltage

None:

Risk of explosion:

Safety critical systems ie. Hospitals:

User specified:

Loss of service to the public

Due to fire or physical damage

No service provided:

Gas:

Water:

Power:

Communications:

Government:

Health:

Financial:

Manufacturing:

Retail:

Leisure:

User specified:

Due to overvoltage

No service provided:

Gas:

Water:

Power:

Communications:

Government:

Health:

Financial:

Manufacturing:

Retail:

Leisure:

User specified:

Loss of cultural heritage

Due to fire or physical damage

None:

Museum, Stately home etc:

User specified:

Loss of economic value

Due to special hazard

No special hazard:

Hazard for surroundings or environment:

Contamination for surroundings or environment:

Due to step & touch voltage

None:

Agricultural properties with animals inside / outside the structure:

Due to fire or physical damage

No economic loss:

Schools, Commercial, Public entertainment, Prisons and Churches:

Hospitals, Hotels, Industrial, Museum, Agricultural:

Due to over voltage

None:

Risk of explosion:

Hospitals, Industrial or commercial complex, offices, hotels:

Museums, Agricultural, Schools, Churches, Public buildings:

Others:

Costs of loss

Cost of any animals in this zone:

Cost of protection measures:

Cost of any systems in this zone:

Cost of the building:

Cost of the contents of this zone:

Interest Rate:

Amortization Rate:

Maintenance Rate:

Lightning Protection

Stone Safety Services

Stone Technical Services

Stone Safety

Recent Projects

Risks being considered

Lightning activity

Location relative to surroundings

Service line density

Shield at structure boundary

Incoming line type:

Internal wiring type:

Presence of HV/LV transformer:

Connected equipment withstand:

Type of service:

Location relative to surroundings:

Zone Location:

Type of soil or floor:

Risk of fire or physical damage:

Fire Protection System:

Shield at zone boundary

Due to special hazard:

Due to touch step voltage

Due to fire or physical damage:

Due to overvoltage

Due to fire or physical damage

Due to overvoltage

Due to fire or physical damage

Due to special hazard

Due to step & touch voltage

Due to fire or physical damage

Due to over voltage