TECHNICAL SUBMISSION SPRINKLER SYSTEM SKY STUDIOS, …

TECHNICAL SUBMISSION

SPRINKLER SYSTEM – SKY STUDIOS, ELSTREE

Document Reference: E.131886 - SSTS

Date: 01.03.2021

Revision: A

Created By: Nick Strong GIFireE EngTech IRMCert

Revision Description Date Created By Approved By

-

Original Technical Submission.

01.03.21

Nick Strong

Kris Parker

A Additional Pre-Action Valves included. 30.03.21

Nick Strong

Kris Parker

Design Standards

Sprinkler Protection design to The LPC Rules incorporating BSEN12845: 2015,

Technical Bulletins, and Annexes.

The sprinkler protection will be designed to various hazard classifications (refer to

the table below). Annex F – Sprinkler System Enhancements has been applied

across all sprinkler systems where applicable.

Hazard Classifications

Building Reference Hazard Classification

Production Office Building 133 Ordinary Hazard Group 1

Sound Stage 131 Ordinary Hazard Group 4




Visitor / Administration Building 110 Ordinary Hazard Group 1













Production Support Building 121 High Hazard

Production Support Building 122 High Hazard

Multi-Storey Car Park Ordinary Hazard Group 2

Sprinkler protection in the FDR room only

Areas Not Sprinkler Protected

Building Reference

Production Office Building 133

Sound Stage 131

Water Supplies

We propose to attend site and install a new sprinkler water storage tank and sprinkler

pumphouse – details as follows: -

Sprinkler Water Storage Tank

We propose to supply and install 2 No.

280m3 effective capacity galvanised steel

circular LPCB Approved sprinkler water

storage tanks with a total effective capacity

of 560m3.

The sprinkler tanks are to be designed to

The LPC Rules incorporating BSEN12845:

2015, Technical Bulletins and Annexes and

LPS1276 – The Requirements for the LPCB

Certification and Listing of Above Ground

Suction Tanks for Sprinkler Systems.

Fire Sprinkler Tanks – 560m3 Combined Effective Capacity Effective Capacity (per tank) 280.2m3 (250mm freeboard, 255mm dead water)

Dimensions (per tank) Ø6.2m x (H)9.7m

Roof Type Trough deck (0.75kN/m2 live load)

Sealing Type PVC liner

Ground Loading (per tank) 95kN/m2

Seismic Zone N/A

Shell Fixing Angle mount

Coating Internally Galvanised to BSEN10346

Coating Externally Galvanised to BSEN10346

Concrete Base

The concrete base on which the sprinkler tanks will be located are to have a power

float finish to +/- 5mm – By Others.

Tank Design

Below is the proposed design for each of the sprinkler tanks: -

Included with each sprinkler tank is the following: -

Item Description Qty Air gaps AB air gap duct complete with insect mesh - C(7-10R) 1

Contents gauge CYL-0-10M Contents Gauge complete with a no loss

connector & boss

1

Drain CYL – 50mm gate valve complete with boss 1

Float valve chamber CYL – 1 metre x 1 metre x 400mm high hinged float

valve chamber

1

Immersion heater CYL- FW001 Immersion Heater to comply with complete

with boss

1

Inlet 100mm BSP Equilibrium ball valve suitable up to 5 Bar

complete with copper ball & drop arm - flanged

1

External ladder (fixed) Roof platform 750mm LH - C (7-10R) 1

External ladder

(removeable)

BS/FM Ladder 8 walk-off hook-on 1

Level switch CYL - S/S level switch, complete with mini-din plug &

boss

1

Manways CYL - Side access manway - 600mm Square - C (7-

10R) complete with gaskets

1

Overflow 150mm flanged (rolled to C radius) overflow & bell

mouth

(extended) - kit

1

Pump test return CYL - Ø150mm test return - complete with flashing 1

Vortex inhibitor CYL - Vortex inhibitor - 300mm complete with elbow &

PN16 flange

1

Warning pipe CYL – 25mm PVC plain end tank connector 1

Pipe brackets (100mm) CYL – heavyweight pipe bracket - 100mm 4

Pipe brackets (150mm) CYL – heavyweight pipe bracket - 150mm 3

Notes:

• Sprinkler Water Storage Tank concrete base By Others

• Tank Infill from Town’s main to base of the tank By Others

Within our quotation we have included to install the sprinkler water storage tank infill

pipework from the base of the tank to the sprinkler tank ball valve housing. The infill

main from the connection to the Town’s main to the base of the tank is By Others.

Sprinkler Pre-Packaged Pumphouse

Place–Down-and-Connect Fire

Pumphouse.

The fire sprinkler pumphouse will be

designed and manufactured to The LPC

Rules incorporating BSEN12845: 2015,

Technical Bulletins and Annexes.

Fire Pump Details

The fire pumps are to be of the flooded suction type and are as follows: -

• Duty Pump – Electric

• Standby Pump – Diesel

Both fire pumps are rated at 6500 L/min @ 8.5 bar (Inc 0.5 bar margins).

Model: NKF125-315 289mm diameter impeller horizontal

end suction centrifugal pump

Construction: Cast iron casing, all bronze or cast iron with bronze

wear ring impeller, steel shaft fitted with a single

mechanical seal

Connections: Flanged BS4504/16.

Electric set: Long coupled to a 132 kW IP55 motor arranged for

415v/50Hz/3ph AC supply. Supplied fitted with

casing circulation relief valve. Complete with

BSEN12845 Star/Delta Controller supplied fitted to

wall and pre-wired.

Diesel set: As above but with steel shaft and long coupled to a

Clarke diesel engine model JU6H-LP54 161 kW.

All mounted on a fabricated steel base plate with

non-spacer coupling & guard. LPC (with contact to

initiate operation of ventilation louvres) twin sets of

Ni-Cad batteries and 6-hour Fuel tank will be floor-

to-wall mounted, completely piped, wired, and

tested.

Our proposal includes full manufacture of

the sprinkler pumphouse and installation

of

LPCB Fire pump sets & jockey pump

inside with pipework, wiring & lighting to

provide a fully packaged unit.

The pipework termination will be external

to the enclosure with provision in the

base of one wall to accommodate power

and alarm cables.

General Notes

• Fully mechanically and electrically tested including flow test

• Unit can be tailored to suit site layout and orientation

• Standard Kingspan enclosure with C4 Painted base Frame

• 1 hour Fire rated enclosure

Remote Alarm Panel

Model: ‘Harrijess’ remote alarm panel type H400

The remote alarm panel is designed to monitor the state of the pumps / pumphouse

and reports the status via front panel indicators.

The panel incorporates the following:

• Sixteen normally closed inputs (all fully monitored)

Alarms to be repeated:

We Would usually recommend the following alarm signals are repeated per pump:

Electric Pumps

• Pump on demand

• Pump running

• Supply status

• Mains failure

Diesel Pumps

• Pump on demand

• Pump running

• AC mains failure

• Fault at controller

Additional Signals

• Fire in pumphouse

• Low temperature in pumphouse

• Low water level in tanks

• Common fault signals from monitored stop valves

• Trace heating monitoring

Sprinkler Pumphouse Commissioning

We employ Grundfos; as the manufacturer of the sprinkler pumphouse; to undertake

the full commissioning alongside our site engineers.

The scope of the works includes: -

• Installation check

• Voltage and protection check

• Winding resistance measurements for pumps

• Level, pressure switch or sensor installation check

• Setting of proper functions and parameters

• Start-up operation

• Working parameters test

• All settings documented in a service report

• Only for long-coupled pumps: pump alignment included

• Training of your operations and maintenance personnel on daily operation and

minimum maintenance to keep the equipment up and running

• Information about recommended consumables or wear parts

• Service job finalised with a report highlighting all areas covered and including

recommendations

Water supplies – Frost Protection

We propose to design, supply, and install a complete trace heating system providing

frost protection to the sprinkler system suction, delivery and tank infill pipework that

forms part of the water supplies installation.

Trace Heating

The Trace heating system will be designed in accordance with BS EN 12845 dual

trace heating and consists of self-regulating trace heating cable, we have allowed to

provide all necessary junction boxes, connection kits, fixing tapes and end seal kits to

provide a complete trace heating system in accordance with Electrical Resistance

trace heating systems for industrial and commercial applications.

We have included for a trace heating monitoring control unit type THMU2B which

includes the following: -

• Mains Input 230v AC 50/60 Hz

• Power Heating monitoring range:

o 30 Watts to 3.0K Watts (Constant Wattage)

o 30 Watts to 2.0K Watts (Self-regulating)

• Automatic Measurement for both Primary & secondary outputs on Initial Setup

• Number of Circuits:

o 2 Heating Circuits (Primary & secondary) each with 2 output terminals

• Heating monitoring

o Automatic testing of both circuits at 2-hour intervals

• Heating Circuit Protection:

o Short Circuit Protection via 16 Amp Type “B “, 6KA MCB

• Monitoring Trip Fault condition:

o Constant Wattage:

▪ Measurement setting less 25 - 30 % Self Regulating

▪ Measurement setting less 35 - 40 % (Will automatically switch from

Primary to Secondary Output)

• Heating Set Point:

o 5 or 8 O/C via DIL switch (factory set to 5 O/C)

• Sensor Temperature Indication:

o LED Bar Display External Remote Input

o N/O - closing to Power heating circuit

o Common Fault Auxiliary Output

o 1 set CHO rated at 1-amp 50V DC

o Temperature sensor type NTC Thermistor

o 10K Temperature sensor

o Cable Length 1.5 metre

• Enclosure Construction Impact resistant IP55 rated, Grey ABS to RAL 7035.

Thermal Insulation

We propose to supply and install 25mm thick

mineral wool sections outer clad in aluminium

with all valves, flanges etc. shall be fitted with

silicone coated glass cloth mattresses

manufactured with Velcro and drawstring

fasteners to allow for easy removal and

refitting for maintenance purposes.

Testing

Following the installation of the Electric Trace

Heating and prior to the installation of the

thermal Insulation the system will be tested, on

completion of the test (witnessed by client or

his representative) and subject to the results

the thermal Insulation is to be applied.

Warning Labels

We have allowed for trace heating warning labels.

Underground Sprinkler Main

We propose to install an underground sprinkler main across the Sky Studios site. We

have included for the following: -

Pipework

• Supply and install approximately 1800 metres of 225mm diameter SDR11

Black HPPE and 48 metres of 180mm diameter SDR11 HPPE pipe work,

which will commence from the pump house to each of the building entry

points. In trench welding will be using a Manual Butt Fusion Machine where

necessary

• Supply and installation of 22 No. 225mm diameter moulded PE branches, 18

No. 225mm diameter moulded 90° elbows, and 15 No. 225mm diameter 45°

bends

Isolation Valves

We propose to supply and install 29 No. UL/FM approved post indicator valves (post

indicators not included) sectional isolation valves across the site as listed below.

The valves are to be installed as per the detail on Hoare Lea drawing - 0209630-HL-

XX-XX-DR-M- 580-0003.

For each valve this will include 2 No. Viking Johnson Flexlock flange adaptors, 1 No.

Flexlock coupler, 2 No. ductile puddle flanges.

The sections between the 2 No. flange adaptors will be in EN545 ductile iron.

• 24 No. DN200mm

• 5 No. DN150mm

Notes:

• Chamber Sections, access ladders and water proofing membrane to be By

Others

• All civil works – trenching, backfilling etc… By Others

Building Entry Points

We propose to supply and install 22 No. building entry points.

Following the building entry isolation valves SDR11 PE pipe will pass under the

building where it will turn 90° elbow to the vertical . From a PE flange the pipe will

rise up with a 1000mm EN545 blue ductile double flanged spool to finish

approximately 250mm above finished floor level.

• 17 No. DN200mm

• 5 No. DN150mm

Testing

We propose to undertake 4 No. sectional water tests. We will require an abundant

water supply within 30 metres of the test point, supplied By Others.

Upon completion of the installation all pipework will be fully hydrostatically pressure

tested to 15 bar for 2 hours accordance with IGN-4-01-03 standards.

Marker Tape

We will supply only marker tape (free issue) for the fire main to be installed By

Others.

Should the pipe require additional wrapping with marker tape at 500mm centres or

specialist tape in accordance with BS1710 then additional rolls will be required and

charged for.

Connections at the boundary

1. We will provide a quotation for pipework and fittings at the point of connection as

identified by the client. All water authorities are different, and each site has its

own individual requirements based on the site / client requirements.

2. Details of the boundary including any valves, check valves, drain valves or water

meters must be provided by the client. Any additional work and fittings required

at the boundary different to what was originally quoted will be chargeable.

Backfilling of Pipework

1. Most water authorities insist that any new pipework should not be backfilled prior

to their inspection and approval of the trench and system. We will not be

responsible for any costs incurred should you backfill prior to water authority

approval.

2. All new pipework should be pressure tested in accordance with its relevant

testing specification, any backfilling that is required prior to a pressure test should

be discussed with us. We will not be held responsible for any excavation or re-

instatement costs that occur due to failure of pipe or fittings if they have been

backfilled prior to a pressure test being carried out.

3. It is a requirement that any valves, check valves or flanges that are buried must

be fully accessible by way of a manhole or chamber for the routine maintenance

and replacement of these fittings. Our operatives will require access to any

flanges, nuts, and bolts for the re-tightening of flanges, if we cannot gain access

to these area’s we will not be responsible for any costs incurred to re-excavate or

clear out the chambers.

Disinfection

1. All water authorities have different requirements for the process of disinfection of

water mains, the client will need to provide details of the process required for the

relevant water authority.

2. A readily available and abundant water supply within 30 metres of the pipe ends

must be made available for the disinfection process to be carried out. Also,

please ensure that there is sufficient drainage to allow emptying of the pipework

or flushing should disinfection be required.

Sprinkler Installation Control Valves

Wet Alarm Valves

Across the new site we propose to supply and install 23

No. new WET control valve sets complete with: -

A. Main isolation control valve

B. Stop valve

C. Bypass arrangement

D. Main alarm valve

E. Pressure switch

F. Hydraulic alarm bell

G. Valve trim (drains and test lines etc...)

H. Pressure gauges

Pre-Action Valves

Within the Multi-Storey Carpark we propose to supply and install 1 No. new PRE-

ACTION control valve set complete with: -

A. Main isolation control valve

B. Main alarm valve

C. Flow alarm pressure switch

D. Manual emergency station (normally closed and

secured)

E. Solenoid, wet pilot, or dry pilot release

F. Main drain (normally closed)

G. Alarm valve line (normally open)

H. Air compressor

I. Hydraulic alarm bell

J. Valve trim (drains and test lines etc...)

K. Pressure gauges

Installation Control Valve Table

Building Reference ICV Type Size (mm) Production Office Building 133, 142, 154 & 183 Wet 150

Production Office Building 133, 142, 154 & 183 Pre-Action 100

Sound Stage 131 & 132 Wet 200

Sound Stage 141 Wet 200

Sound Stage 151, 152 & 153 Wet 200

Sound Stage 161, 162 & 163 Wet 200



Visitor / Administration Building 110 Wet 150

Visitor / Administration Building 110 Pre-Action 100

Visitor / Administration Building 110 Deluge 100

Production Support Building 121 & 122 Wet 200

Multi-Storey Car Park – FDR Room Only Pre-Action 100

Notes:

• The installation control valve sizes are assumed based on the information

provided as part of the enquiry documentation. The actual sizes will be

confirmed following completion of the hydraulic calculations.

Drainage Requirement

Local drainage at each control valve location designed to cater for a flow of 300 litres

per minute is to be provided adjacent to the Sprinkler System valves By Others.

Zone Valve Arrangements

Within the following areas we propose to install zone valve arrangements: -

Building Reference No. of Zones Size (mm) Production Office Building 133 9 150

Production Office Building 142 9 150



Visitor / Administration Building 110 4 150

Notes:

• The zone valve sizes are assumed based on the information provided as part

of the enquiry documentation. The actual sizes will be confirmed following

completion of the hydraulic calculations.

Each of the zone valve arrangements will consist of a monitored stop valve,

Zonechecks and drain valves - totalling

43 zones across the site.

The zone valve arrangements will be

installed at each floor level within the

buildings above. The Production Office

Buildings have 3 No. zone valve

arrangements per floor; the Visitor /

Administration Building has 1 No. zone

valve arrangement per floor.

Electrical wiring of the monitored stop valves and the flow switches is by Aquamatic

Fire UK Limited – please refer to electrical section below.

Sprinkler Protection

High Hazard Sprinkler Protection

High hazard sprinkler protection is to be installed within the following buildings on the

Sky Studio’s new site: -

• Production Support Building 121

• Production Support Building 122

The sprinkler protection in these buildings is to be designed and installed to have a

design density of 18mm/min over an Assumed Maximum Area of Operation (AMAO)

of 260m2 on a property protection basis.

The specification for the sprinkler systems within these buildings noted that a design

density of 12.5mm/min is to be provided, but also stated that there would be

excessive storage clearance from the top of the storage solution to the sprinkler

protection at roof level.

Due to the excessive storage clearance, an allowance in the sprinkler systems design

density is required and must increase. In the case of these Production Support

Buildings, the new design density is calculated as follows: -

Original Design Density (A): 12.5mm/min

Excessive Storage Height: 4 metres

Initial Additional Density (B): 2.5mm/min for first excess

metre

Further Requirement per Metre of Height (C): 1mm/min multiplied by 3 (up

to a maximum of 18 metres)

New Design Density: (A)12.5 + (B)2.5 + (C)3 =

18mm/min

As part of the installation within both of these buildings we have included to install

new riser from the installation control valve set and supply mains around the building

for the future installation of racking.

Ordinary Hazard Group 4 Sprinkler Protection

Ordinary hazard group 4 sprinkler protection is to be installed within the following

buildings on the Sky Studio’s new site: -

• Sound Stages 131, 132, 141, 151, 152, 153, 161, 162, 163, 171, 172, 181 &

182



of 360m2 on an enhanced property protection basis.




• Multi-Storey Car Park – FDR Area only







• Production Office Buildings 133, 142, 154 & 183

• Visitor / Administration Building




Sprinkler Heads

All sprinkler heads are to be LPC Approved, where possible, for use within the

occupancy of this project. Data sheets of the sprinkler heads are issued as part of

this technical submission for Client sign off prior to installation.

Sprinkler Head Details

Area of Use: Roof & Mezzanine

Manufacturer: Reliable

Model No.: GL112

Sprinkler Identification No.: R3226

Approvals: FM Global

Type of Sprinkler: Spray Upright

Finish: Brass

Temperature Rating: 74°C

K-Factor: K160

Response: Quick


Area of Use: Ceilings


Model No.: G5

Sprinkler Identification No.: R3415

Approvals: FM Global, LPCB, VdS, CE

Type of Sprinkler: Spray Pendent

Finish: White (Cover Plate)


K-Factor: K80

Response: Standard


Area of Use: Ceiling Voids / Exposed


Model No.: F1FR56

Sprinkler Identification No.: RA1425

Approvals: cULus, FM Global, LPCB, VdS, CE, WM

Type of Sprinkler: Spray Upright / Conventional

Finish: Brass


K-Factor: K80

Response: Quick Sprinkler Head Details

Area of Use: Roof, Gantry, & Walkways


Model No.: F1FR56

Sprinkler Identification No.: RA1425

Approvals: cULus, FM Global, LPCB, VdS, CE, WM

Type of Sprinkler: Spray Upright

Finish: Brass


K-Factor: K80

Response: Quick

Sprinkler Tank and Pumphouse Electrics

Fire Pump Power Supply

The mains cable and connection to the mains supply and fire pumps are to be

supplied and installed By Others.

Details of the electrical requirements are to be issued following full design of

sprinkler pumphouse.

Distribution Board Power Supply

A distribution board is provided within the sprinkler pumphouse as part of the pre-

packaged solution. Power to the distribution board is to be supplied and installed By

Others.

Further details to be provided following full design of sprinkler pumphouse.

Tank Immersion Heater

We have included within our tender to provide a power supply from the sprinkler

pumphouse distribution board to the tank immersion heaters at the top of each

sprinkler water storage tanks.

The immersion heaters are supplied as part of the water storage tank build.

The cabling will be sized to suit power requirements for the immersion heaters and

will be installed within appropriate containment.

Sprinkler Pumphouse Wiring

Within our quotation we have included for the pumphouse wiring internally. This

includes the following: -

• Wiring from the electric and diesel pumps to the control panel

• Distribution Board within the Sprinkler Pumphouse

o Power to the pressure maintenance (jockey) pump

o Lighting

o Heating

o Power sockets

Fire Alarm / Signalling

Installation and Connections for Sprinkler Monitoring Panel

We propose to supply and install 1 No. new sprinkler monitoring panel within a

location to be confirmed.

The panel will be a conventionally wired LPC compliant panel with 200 zones.

Each zone will need to be wired in 2 cores from the device to the panel location and

terminated on the respective terminal By Others.

The conventional panel connections are to be in line with current LPC and BS5839

practice where a firing and end of line resistor will need to be fitted at every one of

the 200 zones.

Wiring diagrams will be provided.

Further to this we will undertake all fire and fault signal wiring from the pumphouse /

installation control valve set(s) and zone valves to local interfaces, supplied By

Others.

The signals are then to be taken back to the sprinkler monitoring panel By Others to

a junction box where we will then connect them.

The signals include: -

Sprinkler Tanks

• 2 No. Low Level Switches

Electric Pump

• Pump on Demand

• Pump Running

• Supply Status

Diesel Pump

• Pump on Demand

• Pump Running

• Supply Status

• Engine Failure

Pumphouse

• Open/Close - 2 No. Tank Infill Stop Valves

• Open/Close - 5 No. Suction Stop Valves

• Open/Close - 2 No. Delivery Stop Valves

• Low temperature in pumphouse

• Fire in pumphouse

• Trace heating monitoring

Installation Control Valve Sets

• Open/Close - 31 No. Main Stop Valves

• Open/Close - 48 No . Bypass Stop Valves

Zone Valve Arrangements

• 43 No. Flow Switches - Fire Signal

• 43 No. Stop Valves - Fault Signal

The power supply to the sprinkler indicator panel is to be provided By Others.

Zone Valve Arrangements Electrics & Signalling

We propose to install new fire and fault connections from the zone stop valve (fault)

and the Zonecheck (fire) to the fire alarm system via local interfaces. The local

interfaces are to be installed within 2 metres of the stop valve and the Zonecheck By

Others.

From the local interfaces, Aquamatic Fire UK Limited will connect the stop valve and

Zonecheck.

A fused spur power supply is to be installed within 2 metres of each of the

Zonecheck arrangements - 43 No. This is to be provided By Others.

Sprinkler Pipework

Pipework and Fittings

Steel tube will be medium quality black to

EN 10255.

Screwed fittings will be black malleable

iron to EN 10242.

Mechanical grooved joints will be Victaulic

or equivalent.

Finish with one coat of Red Oxide paint.

Sprinkler Pipework Brackets

Pipework Support

Steel pipework will be supported from the building structure with galvanized

threaded steel rod and galvanized steel pipe filbows. These will be spaced as per the

LPCB requirements. Pipe supports within this quotation will be taken directly from

the structure.

Pipework, fittings and supports will be LPC Approved and the relevant data sheets

for each will be issued as part of the technical submission.

It is assumed that the structure is capable of supporting any additional loads imposed

by the system. The dry and wet weights of the sprinkler pipework is shown in the

table below.

We have not currently included for the use of acoustic and anti-vibration brackets.

Pipework Weights Table

Pipework Weights (Medium Weight Steel)

Diameter

(mm)

Weight of Pipe

per Metre (KG)

Weight of Water Filled Pipe

per Metre (KG)

25 2.48 3.08

32 3.20 4.07

40 3.69 5.04

50 5.21 7.38

65 6.69 10.20

80 8.70 13.59

100 12.51 21.21

150 19.95 38.55

Documents

TECHNICAL SUBMISSION SPRINKLER SYSTEM SKY STUDIOS, …