Form10/00
UK ABWR
Document ID
Document Number
Revision Number
:
:
:
GA91-9101-0101-16003
HPE-GD-H018
A
UK ABWR Generic Design Assessment
Generic PCSR Sub-chapter 16.3 : Heating Ventilating and
Air Conditioning System
Hitachi-GE Nuclear Energy, Ltd.
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UK ABWR
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DISCLAIMERS
Proprietary Information
This document contains proprietary information of Hitachi-GE Nuclear Energy, Ltd. (Hitachi-GE), its
suppliers and subcontractors. This document and the information it contains shall not, in whole or in part,
be used for any purpose other than for the Generic Design Assessment (GDA) of Hitachi-GE’s UK ABWR.
This notice shall be included on any complete or partial reproduction of this document or the information it
contains.
Copyright
No part of this document may be reproduced in any form, without the prior written permission of
Hitachi-GE Nuclear Energy, Ltd.
Copyright (C) 2014 Hitachi-GE Nuclear Energy, Ltd.
All Rights Reserved.
GA91-9101-0101-16003 Rev. A
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Table of Contents
16.3.1
16.3.2
16.3.3
16.3.4
System Summary Description .......................................16.3-1
System Roles ....................................................................16.3-1
Function Delivered ..........................................................16.3-1
Basic Configuration ........................................................16.3-2
16.3.5
Mode of Operation ..........................................................16.3-5
16.3.4.1 Reactor Area (R/A) HVAC ............................................................ 16.3-2
16.3.4.2 Emergency D/G Electrical Equipment Zone HVAC (DGEE/Z
HVAC) ............................................................................................. 16.3-3
16.3.4.3 Turbine Building (T/B) HVAC ...................................................... 16.3-3
16.3.4.4 Heat Exchanger Building Normal and Emergency (Hx/B-N
and Hx/B-E) HVAC ........................................................................ 16.3-3
16.3.4.5 Control Building Emergency Electrical Equipment Zone
(CBEEE/Z) HVAC .......................................................................... 16.3-4
16.3.4.6 Main Control Room (MCR) HVAC .............................................. 16.3-4
16.3.4.7 Radwaste Building (Rw/B) HVAC ................................................ 16.3-4
16.3.4.8 Service Building (S/B) HVAC ........................................................ 16.3-4
16.3.4.9 Backup Building (B/B) HVAC ....................................................... 16.3-5
16.3.5.1
16.3.5.2
16.3.5.3
16.3.5.4
16.3.5.5
16.3.5.6
16.3.5.7
16.3.6
16.3.7
R/A HVAC ....................................................................................... 16.3-5
DGEE/Z HVAC ............................................................................... 16.3-5
Hx/B (Hx/B-N and Hx/B-E) HVAC ............................................... 16.3-6
CBEEE/Z HVAC ............................................................................ 16.3-6
MCR HVAC .................................................................................... 16.3-6
B/B HVAC ....................................................................................... 16.3-7
Other HVACs .................................................................................. 16.3-7
Design Basis .....................................................................16.3-7
System Design Description .............................................16.3-9
16.3.7.1 Overall Design and Operation ....................................................... 16.3-9
16.3.7.2 Equipment Design and Operation ............................................... 16.3-11
16.3.8
16.3.8.1
16.3.8.2
16.3.8.3
16.3.8.4
16.3.8.5
Main Support Systems..................................................16.3-28
Control and Instrumentation (C&I) Systems............................. 16.3-28
Power Supply Systems .................................................................. 16.3-28
HVAC Normal Cooling Water System (HNCW) ....................... 16.3-28
HVAC Emergency Cooling Water System (HECW) ................. 16.3-28
Heating Steam/Heating Steam Condensate Return System
(HS/HSCR) .................................................................................... 16.3-29
16.3.8.6 Reactor Building Cooling Water System (RCW) ...................... 16.3-29
16. Auxiliary Systems
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System Summary Description
This section is a general introduction to the HVAC where the system roles, system functions, system
configuration and modes of operation are briefly described.
16.3.2
System Roles
The HVAC is designed to achieve the following purposes.
(1) The HVAC has a function of keeping the negative pressure within the area so the contaminants
are not spread and providing the function of dilution of the contaminants when they are
generated by ensuring sufficient ventilation rate. In addition, exhaust air is treated with the filter
before discharging from the area.
(2) The HVAC has a function of removing heat from radiant equipment such as electric panels,
mechanical facilities and piping with high temperature.
(3) The HVAC has a function of providing outdoor fresh air for operator and occupants.
(4) The HVAC has a function of discharging smoke in the case of fire and supplying fresh air in
exchange. It also has the function of preventing smoke from moving into clean areas thus
ensuring egress routes for operators.
16.3.3
Function Delivered
The HVAC is designed to provide the following functions.
(1) Isolation and independency of the system
The HVAC is independently for each radiation controlled/ non-controlled area and building, in
order that they are provided with sufficient physical barrier to separate from each other. The
HVAC division of equipment for emergency is corresponded with emergency power division.
(2) Exhaust
Exhaust air from the potential contaminated area is discharged from the main exhaust stack.
Filters are installed in the Exhaust Air Treatment Facilities of the systems that discharge exhaust
air through main exhaust stack. On the other hand, air is directly discharged to the atmosphere
through the local place without any treatment of filters only if the area is assured to noncontaminated.
(3) Ventilation
Ventilation method is decided in consideration of the system required functions and economical
efficiency from following Type-1, Type-2 or Type-3.
(a) Type-1 ventilation method
This is a ventilation method of using Supply Fan for supplying air and Exhaust Fan for
discharging air. There are two methods for this ventilation type. One is “Once-through
ventilation method” which discharges whole air volume that is supplied, and another
method is “Mixing outdoor air and recirculated air ventilation method.”
(i) Once-through ventilation
This is a method that Supply Fans supply air from outdoor and the same amount of air
is discharged by Exhaust Fans.
Mainly, this method is used for the HVAC within radiation controlled area.
(ii) Mixing outdoor air and recirculated air ventilation
This is a method of recirculating part of exhaust air back to the place where the air
supplied wherein these air are mixed the same amount of incoming air is discharged to
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outdoor by means of the Exhaust Fan. This method is mainly used for HVAC within
radiation non-controlled area.
(b) Type-2 ventilation method
This is a method to supply air by means of the Supply Fan and exhaust air through
openings. Since the pressure within the building is positive, this method is used for the
ventilation of radiation non-controlled area.
(c) Type-3 ventilation method
This is a method to use opening to supply outdoor air and discharge the air by means of the
Exhaust Fan. This method is used for the local ventilation.
(4) Cooling and heating
Outdoor air cooling is done by the chilled water from the Refrigerators supplied to the HVAC
Cooling coil. In principle, the HVAC Normal Cooling Water System (HNCW) is used for the
normal system whereas the HVAC Emergency Cooling Water System (HECW) is used for the
emergency system. Local Cooling Unit used for local cooling can be divided into either the
Normal Local Cooling Unit or Emergency Local Cooling Unit. Chilled or cooling water is used
for following.
- Local Cooling Unit for normal use; HNCW
- Local Cooling Unit for emergency use; the Reactor Building Cooling Water System (RCW)
Heating is carried out by the Heating Steam (HS) through the HVAC heating coil. It should be
noted that there is a case when cooling/heating is carried out by Fan Coil Unit (FCU) or MultiSplit Air Conditioning unit when there is a necessity to control room temperature individually
for each room such as the general habitable area located within radiation non-controlled area.
(5) Dust removal from the outdoor air
Middle efficiency air filter is used when supplying outdoor air to minimize the amount of dust
etc. that could infiltrate into the building.
(6) Air flow control and ensuring negative pressure
Air flow direction within the building is directed from less contaminated area to more
contaminated area and the contamination is prevented from spreading to other areas. As for the
HVAC located within the radiation controlled area, differential pressure of the inside/outside of
the building is adjustable so the pressure of the whole areas are ensured to negative.
(7) Functionality of the smoke purging
Smoke purging is necessary for the human access by means of the HVAC Exhaust Fan, or
smoke Purge Fan specifically made for discharging smoke while supplying outdoor fresh air by
means of the Supply Fan. The smoke generated within each fire zone designated as safety zone,
is not allowed to infiltrate into adjacent clean area.
16.3.4
Basic Configuration
The HVAC consists of sub-systems as following.
16.3.4.1 Reactor Area (R/A) HVAC
The summary of the main components are as following.
(1) Supply Fan 3 units - 50 % each
(Used both for exchanging outdoor air and discharging smoke)
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(3)
(4)
(5)
(6)
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Exhaust Fan 3 units - 50 % each (Combined use with the Smoke Purge Fan)
Supply Air Treatment Facility single unit - 100 % (Cooling coils and filters are mounted)
Exhaust Air Treatment Facility 3 units - 50 % each (Filters are mounted)
R/A Supply Air Isolation Damper and Accumulator Tank 2 units each
(Mounted on the Supply Duct of the R/A HVAC)
R/A Exhaust Air Isolation Damper and Accumulator Tank 2 units each
(Mounted on the Exhaust Duct of the R/A HVAC)
Normal Local Cooling Unit 4 units
Emergency Local Cooling Units 12 units
Duct, damper and accessory 1 set
16.3.4.2 Emergency D/G Electrical Equipment Zone HVAC (DGEE/Z HVAC)
This system consists of the divisions A, B and C.
The summary of the main components are as following.
(1) DGEE/Z Supply Fan 2 units [per division] - 100 % each [per division]
(Used both for exchanging outdoor air and discharging smoke)
(2) DGEE/Z Exhaust Fan 2 units [per division] - 100 % each [per division]
(3) DGEE/Z Smoke Purge Fan single unit [per division] - 100 % [per division]
(4) DGEE/Z Supply Air Treatment Facility single unit [per division] - 100 % [per division]
(Cooling coils and filters are mounted)
(5) Duct, damper and accessory 1 set
(6) ED/G Room Emergency Supply Fan 2units [per division] - 50 % each [per division]
16.3.4.3 Turbine Building (T/B) HVAC
The summary of the main components are as following.
(1) Supply Fan 3 units - 50 % each
(Used both for exchanging outdoor air and discharging smoke)
(2) Exhaust Fan 3 units - 50 % each (Combined use with the Smoke Purge Fan)
(3) Supply Air Treatment Facility single unit – 100 % (Cooling coils and filters are mounted)
(4) Exhaust Air Treatment Facility 3 units - 50 % each (Filters are mounted)
(5) Local Cooling Unit 8 units
(6) Duct, damper and accessory 1 set
16.3.4.4 Heat Exchanger Building Normal and Emergency (Hx/B-N and Hx/B-E)
HVAC
The summary of the main components are as following.
(1) Hx/B-N HVAC
(a) Supply Fan single unit - 100 %
(Used both for exchanging outdoor air and discharging smoke)
(b) Supply Air Treatment Facility single unit – 100 % (Cooling coils, heating coils and filters
are mounted)
(c) Duct, damper and accessory 1 set
(2) Hx/B-E HVAC
This system consists of the divisions A, B and C.
(a) Supply Fan single unit [per division] - 100 % [per division]
(Used both for exchanging outdoor air and discharging smoke)
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(b) Supply Air Treatment Facility single unit [per division] - 100 % [per division] (Filters are
mounted)
(c) Duct, damper and accessory 1 set
16.3.4.5 Control Building Emergency Electrical Equipment Zone (CBEEE/Z)
HVAC
This system consists of the divisions A, B and C.
The summary of the main components are as following.
(1) Supply Fan 2 units [per division] - 100 % [per division]
(Used both for exchanging outdoor air and discharging smoke)
(2) Exhaust Fan 2 units [per division] - 100 % [per division]
(3) Smoke Purge Fan single unit [per division] - 100 % [per division]
(4) Supply Air Treatment Facility single unit [per division] - 100 % [per division]
(Cooling coils and filters are mounted)
(5) Local Cooling Unit 2 units
(6) Duct, damper and accessory 1 set
16.3.4.6 Main Control Room (MCR) HVAC
This system consists of the divisions A and B one of which is provided as a redundancy.
The summary of the main components are as following.
(1) Supply Fan single unit [per division] - 100 % [per division]
(2) Exhaust Fan single unit [per division] - 100 % [per division]
(3) Recirculation Supply Fan single unit [per division] - 100 % [per division]
(4) Smoke Purge Supply Fan single unit [per division] - 100 % [per division]
(5) Supply Air Treatment Facility single unit [per division] - 100 % [per division]
(Cooling coil and filters are mounted)
(6) Emergency Filter Train single unit [per division] - 100 % [per division]
(Iodine removal charcoal filters are mounted)
(7) Duct, damper (Including the motor operated MCR Isolation Dampers) and accessory 1set
16.3.4.7 Radwaste Building (Rw/B) HVAC
The summary of the main components are as following.
(1) Supply Fan 2 units - 100 % each
(Used both for exchanging outdoor air and discharging smoke)
(2) Exhaust Fan 2 units - 100 % each (Combined use with the Smoke Purge Fan)
(3) Supply Air Treatment Facility single unit - 100 % (Cooling coils and filters are mounted)
(4) Exhaust Air Treatment Facility 2 units - 100 % each (Filters are mounted)
(5) Duct, Damper and accessory 1 set
16.3.4.8 Service Building (S/B) HVAC
The summary of the main components are as following.
(1) Supply Fan 3 units - 50 % each
(Used both for exchanging outdoor air and discharging smoke)
(2) Exhaust Fan 3 units - 50 % each (Combined use with the Smoke Purge Fan)
(3) Supply Air Treatment Facility single unit - 100 % (Cooling coils and filters are mounted)
(4) Exhaust Air Treatment Facility 3 units - 50 % each (Filters are mounted)
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(5) Fan Coil Unit or Multi-Split Air Conditioning Unit TBD
(6) Duct, Damper and accessory 1 set
16.3.4.9 Backup Building (B/B) HVAC
The summary of the main structural components are as following.
(1) Supply Fan 2 units - 100 % each
(Used both for exchanging outdoor air and discharging smoke)
(2) Exhaust Fan 2 units - 100 % each (Combined use with the Smoke Purge Fan)
(3) Supply Air Treatment Facility single unit - 100 %
(Electric heating coil and filters are mounted)
(4) Duct, Damper and accessory 1 set
(5) ED/G Room Emergency Supply Fan 2 units - 50 % each
System outline of each HVAC sub-system are shown in the Figure 16.3-1 to 16.3-15.
16.3.5
Mode of Operation
16.3.5.1 R/A HVAC
This system is subjected to be in operation during the plant normal/emergency operation, or when
smoke purging is required.
Operation modes of the system are as following.
(1) Normal operation mode
Except for the Emergency Local Cooling Units, all of equipment is in operation during the
output operation of the reactor and when conducting inspections.
(2) Emergency operation mode
Upon receiving emergency signal (“drywell pressure high”, “reactor water level low”, “R/A
exhaust radioactivity high” or “refuelling area radioactivity high”), the R/A Isolation Dampers
mounted on the Supply/Exhaust duct are automatically closed to isolate R/A while preventing
exfiltration of the radioactive gas to outdoor by switching into the Standby Gas Treatment
System (SGTS).
In the event of Loss of Off-site Power (LOOP), the R/A HVAC shut down, but cooling is still
possible with the power supply provided by the ED/G within the room wherein Engineered
Safety Features (ESFs) [such as Emergency Core Cooling System (ECCS) pumps] are installed.
(3) Smoke purge operation mode
“Once-through ventilation method” is employed for supplying air and discharging smoke by
means of the Supply Fan and the Exhaust Fan.
16.3.5.2 DGEE/Z HVAC
This system is subjected to be in operation during the plant normal/emergency operation, or when
smoke purging is required.
Operation modes of the system are as following.
(1) Normal operation mode
Except for the ED/G Room Emergency Supply Fan and the Smoke Purge Fan, all of equipment
is in operation during the plant normal operation and the plant normal shutdown.
(2) Emergency operation mode
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Operation is continuously carried out by receiving the power supply provided by the ED/G in
the event of LOOP. In addition, the ED/G Room Emergency Supply Fan is operated after the
ED/G is activated.
(3) Smoke purge operation mode
“Once-through ventilation method” is used for supplying air by the Supply Fan, and the Exhaust
Fan is shutdown. The Smoke Purge Fan is operated for discharging smoke.
16.3.5.3 Hx/B (Hx/B-N and Hx/B-E) HVAC
This system is operated during the plant normal operation and when smoke purging is required.
However, the Emergency Supply Fan within the Hx/B-E is subjected to be in operation only for the
event of emergency in addition to the necessity of operation when discharging smoke as required.
Operation modes of the system are as following.
(1) Normal operation mode
Except for the Supply Fan within Hx/B-E, all of equipment is in operation during the plant
normal operation and when plant normal shut down.
(2) Emergency operation mode
In the event of the LOOP, the HVAC within Hx/B-N is shutdown, and the Hx/B-E Supply Fan
is in operation by means of the power supply provided by the ED/G.
(3) Smoke purge operation mode
During the plant normal operation, the Hx/B-N Supply Fan is used for supplying outdoor air
and discharging smoke whereas the Hx/B-E Supply Fan is used during the plant emergency
operation both of which belong to “Type-2 ventilation method.”
16.3.5.4 CBEEE/Z HVAC
This system is subjected to be in operation during the plant normal/emergency operation, or when
smoke purging is required.
Operation modes of the system are as following.
(1) Normal operation mode
Except the Smoke Purge Fan, all of equipment is operated during the plant normal operation
and the plant normal shut down.
(2) Emergency operation mode
Operation is continuously carried out by receiving the power supply provided by the ED/G in
the LOOP.
(3) Smoke purge operation mode
“Once-through ventilation method” is used for supplying air by means of the Supply Fan, and
the Exhaust Fan is shutdown. The Smoke Purge Fan is operated for discharging smoke.
16.3.5.5 MCR HVAC
This system is subjected to be in operation during the plant normal/emergency operation, or when
smoke purging is required.
Operation modes of the system are as following.
(1) Normal operation mode
Except for the MCR Recirculation Supply Fan, the MCR Emergency Filter Train and the
Smoke Purge Supply Fan, all of equipment is in operation during the plant normal operation and
when plant normal shut down.
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(2) Emergency operation mode
When isolating the MCR in the event of emergency, this system is isolated by the MCR
Isolation Dampers, and the part of recirculation air is directed to the MCR Emergency Filter
Train. In addition, the MCR Isolation Dampers for supplying outdoor air is opened and the air is
continuously supplied as needed. After mixing the part of indoor recirculation air, it will be
filtered by the MCR Emergency Filter Train for supplying the air. As for the air purging, the
MCR Exhaust Fan is operated after opening the MCR Isolation Dampers before discharging the
exhaust air to the atmosphere. Operation is continuously carried out by receiving the power
supply provided by the ED/G in the event of LOOP.
(3) Smoke purge operation mode
“Once-through ventilation method” is used for supplying outdoor air and discharging smoke by
means of the Smoke Purge Supply Fan and the Exhaust Fan.
16.3.5.6 B/B HVAC
This system is subjected to be in operation during the plant normal/emergency operation, or when
smoke purging is required.
Operation modes of the system are as following.
(1) Normal operation mode
Except for the ED/G Room Emergency Supply Fan, all of equipment is operated during the
plant normal operation the plant normal shutdown.
(2) Emergency operation mode
Operation is continuously carried out by receiving provided by the ED/G in the LOOP. In
addition, ED/G Room Emergency Supply Fan is operated after the ED/G is activated.
(3) Smoke purge operation mode
“Once-through ventilation method” is used for supplying outdoor air and discharging smoke by
means of the Supply Fan and the Exhaust Fan.
16.3.5.7 Other HVACs
Following systems are operated during the plant normal operation and/or when smoke purging is
required but these systems are shutdown in the event of LOOP.
T/B HVAC
Rw/B HVAC
S/B HVAC
16.3.6
Design Basis
This section describes the design basis for HVAC.
The HVACs are designed to meet the following safety functions.
(1) Normal/Emergency and Emergency HVAC
The Normal/Emergency and Emergency HVACs are directly related to the nuclear safety
function such as the emergency shutdown of the reactor, cooling for the reactor core, and
removal of the heat after shutting down the reactor. They have the important roles as for
cooling, or removing heat load to ensure the functions related to Structures, Systems and
Components (SSCs) (or its related systems). Any failures of the HVAC could consequently
inhibit to the objectives from ensuring its intended functions so as to keep the required
functions subjected for the SSCs. Thus, safety class is equivalent to that of the SSCs safety
category as Table 16.3-1 shows.
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Table 16.3-1: Objects of SSCs and that of HVAC (Provisional)
Related HVAC
HVAC safety
division
Category
Class
RHR, RCIC,
HPCF
ECCS Local
Cooling Units
among R/A HVAC
Emergency
A
1
FPC
(Emergency
makeup water
system)
FPC Pump Room
Local Cooling Unit
among R/A HVAC
Emergency
A
1
Emergency onsite power system
DGEE/Z HVAC
Normal/Emergency
A
1
ED/G Emergency
Supply Fan
Emergency
A
1
Normal/Emergency
A
2
B/B
ED/G Emergency
Supply Fan
Emergency
A
2
CBEEE/Z HVAC
Normal/Emergency
A
1
Emergency
A
1
Normal/Emergency
A
1
Emergency
B
2
Emergency
B
2
Emergency
B
2
Objects (SSCs)
B/B HVAC
Direct current
power supply
system
Emergency
component
cooling water
system
MCR emergency
ventilation system
Reactor Building
(R/B)
SGTS
FCS
Hx/B-E HVAC
MCR HVAC
(Relevant system)
Isolation Damper
and Accumulator
tank among R/A
HVAC
Local Cooling Unit
for the SGTS room
among R/A HVAC
Local Cooling Unit
for the FCS room
among R/A HVAC
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(2) Normal HVAC
The Normal HVACs are operated during the plant normal operation/shutdown process in order
to contain radioactive contaminants, and remove heat load from the normal electric panels,
equipment and facilities while keeping the environmental habitability and conformity that are to
be ensured for operators and occupants. Any failures of the HVAC could consequently inhibit
to the objectives from ensuring its intended functions as mentioned above. Thus, SSCs used for
the normal plant operation are subjected to be cooled, and the design is be categorized as
“Safety Category C” and classified as “Safety Class 3” in terms of “ALARP”.
Related HVACs are as following.
(a) R/A HVAC (Except for the R/A Isolation Damper and Accumulator)
(b) T/B HVAC
(c) Hx/B-N HVAC
(d) Rw/B HVAC
(e) S/B HVAC
16.3.7
System Design Description
This section described the design of the HVAC.
16.3.7.1 Overall Design and Operation
16.3.7.1.1
R/A HVAC
The R/A HVAC is categorized for establishing two functions.
(1) Normal function
This system provides ventilation and air conditioning function for the R/A during the plant
normal operation. In case smoke is generated within fire area it is discharged to outdoor and
fresh air is supplied in exchange. In addition, heat has to be removed by means of the Local
Cooling Unit for cooling the heat source if the heat load is significantly high at the local area
during the plant normal operation.
During the plant normal shutdown, the nitrogen gas is exchanged with air within the Primary
Containment Vessel (PCV) to provide access route for operators and workers. To do so, HVAC
supply air for the R/A is partially directed to the Atmospheric Control system (AC) via the
purging filter. Consequently, air is returned to the R/A HVAC exhaust system by means of the
PCV Purge Exhaust Fan.
(2) Emergency function
Upon receiving emergency signal (“drywell pressure high”, “reactor water level low”, “R/A
radioactivity high” or “refuelling area radioactivity high”), the R/A Isolation Damper mounted
on the supply/exhaust duct of the R/A HVAC are automatically closed to isolate R/A while
preventing exfiltration of the radioactive gas to outdoor by switching into SGTS. In addition,
rooms wherein equipment that are related to ESFs (such as ECCS pumps) are installed intended
for the operation in the event of emergency, heat is removed by the Emergency Local Cooling
Unit. The power is supplied by the ED/G.
System outline of the R/A HVAC is shown in the Figure 16.3-1.
16.3.7.1.2
DGEE/Z HVAC
The DGEE/Z HVAC provides ventilation and air conditioning function for DGEE/Z during the plant
normal/emergency operation. In case smoke is generated within fire area it is discharged to outdoor
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and fresh air is supplied in exchange. DGEE/Z has their own HVAC according to the adequate
conformity for each electrical power division classified as divisions A, B and C. In addition, the
ED/G Room Emergency Supply Fans specifically designed for emergency use are provided
according to the needs of each division of system A, B and C located within ED/G room.
System outline of the DGEE/Z HVACs are shown in the Figure 16.3-2 to 16.3-4.
16.3.7.1.3
T/B HVAC
The T/B HVAC provides ventilation and air conditioning function within the T/B during the plant
normal operation while having a function of discharging smoke generated within fire zone to
outdoor and supplying outdoor fresh air into the building in exchange. In addition, heat has to be
removed by means of the Local Cooling Unit for cooling the heat source if the heat load is
significantly high at the local area during the plant normal operation.
System outline of the T/B HVAC is shown in the Figure 16.3-5.
16.3.7.1.4
Hx/B (Hx/B-N and Hx/B-E) HVAC
The Hx/B-N HVAC provides ventilation and air conditioning function for the Hx/B during the plant
normal operation. In case smoke is generated within fire area it is discharged to outdoor and fresh air
is supplied in exchange.
System outline of the Hx/B-N HVAC is shown in the Figure 16.3-6.
The Hx/B-E HVAC provides ventilation function for the Hx/B during the plant emergency operation.
In case smoke is generated within fire area it is discharged to outdoor and fresh air is supplied in
exchange. This system is individually provided for this system according to the needs of division A,
B and C for each RCW division.
System outline of the Hx/B-E HVAC is shown in the Figure 16.3-7.
16.3.7.1.5
CBEEE/Z HVAC
During the plant normal/emergency operation, the CBEEE/Z HVAC is provides ventilation and air
conditioning function within CBEEE/Z. In case smoke is generated within fire area it is discharged
to outdoor and fresh air is supplied in exchange. The CBEEE/Z HVAC consists of 3 divisions and
each role of CBEEE/Z assigned for divisions 1 through 4.
The objective for making these configurations as described below is to ensure to provide the HVAC
with sufficient redundancies by incorporating various system combinations.
The HVAC division A (Ventilation area: CBEEE/Z division 1 and division 4), the HVAC division B
(CBEEE/Z division 2 and division 4), and the HVAC division C (CBEEE/Z division 3).
Thus, divisions 1 through 4 for CBEEE/Z are provided with their own HVAC individually.
In addition, the Local Cooling Unit is used for removing heat where the local heat load is
significantly high. The exhaust air from battery room for each division is discharged to outdoor
directly through exhaust duct and openings by the exhaust fans.
System outline of the CBEEE/Z HVACs are shown in the Figure 16.3-8 to 16.3-10.
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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UK ABWR
16.3.7.1.6
Revision A
MCR HVAC
During the plant normal/emergency operation, the MCR HVAC is provided with sufficient functions
required for the ventilation and air conditioning intended for the MCR. In case smoke is generated
within fire area it is discharged to outdoor and fresh air is supplied in exchange. This system consists
of division A and B one of which is provided as a redundancy.
During the plant normal operation, “Mixing outdoor air and recirculated air ventilation method” is
adopted and the exhaust air is directly discharged to outdoor. In case of emergency, there is not to be
any interference with the outdoor environment and in this case, “Inner Recirculating method” is
adopted through which the air is filtered by means of iodine removal charcoal filter integrated within
the MCR Emergency Filter Train. However, have the structure a capability of supplying outdoor air
through iodine removal charcoal filter as needed.
System outline of the MCR HVACs are shown in the Figure 16.3-11 and 16.3-12.
16.3.7.1.7
Rw/B HVAC
The Rw/B HVAC provides ventilation and air conditioning function within the Rw/B during the
plant normal operation. In case smoke is generated within fire area it is discharged to outdoor and
fresh air is supplied in exchange.
System outline of the Rw/B HVAC is shown in the Figure 16.3-13.
16.3.7.1.8
S/B HVAC
The S/B HVAC provides ventilation and air conditioning function within the S/B during the plant
normal operation. In case smoke is generated within fire area it is discharged to outdoor and fresh air
is supplied in exchange.
As for the general habitable area, the Fan Coil Unit or Multi-Split Air Conditioning Unit is used
individually for cooling and heating, considering the habitability of the occupants if needed.
System outline of the S/B HVAC is shown in the Figure 16.3-14.
16.3.7.1.9
B/B HVAC
The B/B HVAC has a function of the ventilation and air conditioning within the B/B during the plant
normal/emergency operation. In case smoke is generated within fire area it is discharged to outdoor
and fresh air is supplied in exchange. In addition, the ED/G Room Emergency Supply Fans
specifically designed for emergency use are provided for the ED/G room. The exhaust air from
battery room is discharged to outdoor directly through exhaust duct and opening.
System outline of the B/B HVAC is shown in the Figure 16.3-15.
16.3.7.2 Equipment Design and Operation
16.3.7.2.1
HVAC System Air Flow Rate
Table 16.3-2 shows about the system air flow rate (provisional) provided for each HVAC subsystem in order to ventilate and remove heat from each building and area.
16. Auxiliary Systems
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Ver. 0
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Generic Pre-Construction Safety Report
UK ABWR
Revision A
Table 16.3-2: HVAC System Air Flow Rate (1/2) (Provisional)
Bldg.
R/B
T/B
System
System Air Flow Rate
Remarks
3
R/A HVAC
170000 m /h
DGEE (A)/Z HVAC
35000 m3/h
DGEE (B)/Z HVAC
36000 m3/h
DGEE (C)/Z HVAC
28000 m3/h
ED/G (A) Room
HVAC
202000 m3/h*
* Including ED/G
combustion air.
ED/G (B) Room
HVAC
202000 m3/h*
* Including ED/G
combustion air.
ED/G (C) Room
HVAC
202000 m3/h*
* Including ED/G
combustion air.
T/B HVAC
379000 m3/h
Hx/B Hx/B-N HVAC
110000 m3/h
Hx/B-E (A) HVAC
91000 m3/h
Hx/B-E (B) HVAC
84000 m3/h
Hx/B-E (C) HVAC
83000 m3/h
(Continued)
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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Form05/01
Generic Pre-Construction Safety Report
UK ABWR
Revision A
Table 16.3-2: HVAC System Air Flow Rate (2/2) (Provisional)
Bldg.
C/B
System
System Air Flow Rate
CBEEE (A)/Z HVAC
17000 m /h
CBEEE (B)/Z HVAC
23000 m3/h
CBEEE (C)/Z HVAC
29000 m3/h
MCR (A) HVAC
100000 m3/h
MCR (B) HVAC
100000 m3/h
Rw/B Rw/B HVAC
80000 m3/h
S/B
S/B HVAC
82000 m3/h
B/B
B/B HVAC
135000 m3/h
ED/G Room HVAC
202000 m3/h*
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
Remarks
3
*Including ED/G
combustion air.
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UK ABWR
16.3.7.2.2
Revision A
Supply, Exhaust Fan and Smoke Purge Fan
The Supply/Exhaust Fan and Smoke Purge Fan of HVAC are designed to perform as following
Table 16.3-3. (Provisional)
16. Auxiliary Systems
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Ver. 0
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Generic Pre-Construction Safety Report
UK ABWR
Revision A
Table 16.3-3: HVAC Fan and Smoke Purge Fan Design Specifications (1/3)
(Provisional)
Bldg. Equipment name
Quantity
R/B R/A Supply Fan
3
(1 stand-by)
3
(1 stand-by)
1
R/A Exhaust Fan
PCV Purge
Exhaust Fan
DGEE (A)/Z
Supply Fan
DGEE (B)/Z
Supply Fan
DGEE (C)/Z
Supply Fan
DGEE (A)/Z
Exhaust Fan
DGEE (B)/Z
Exhaust Fan
DGEE (C)/Z
Exhaust Fan
DGEE (A)/Z
Smoke Purge Fan
DGEE (B)/Z
Smoke Purge Fan
DGEE (C)/Z
Smoke Purge Fan
ED/G (A) Room
Emergency Supply
Fan
ED/G (B) Room
Emergency Supply
Fan
ED/G (C) Room
Emergency Supply
Fan
T/B T/B Supply Fan
Rated Air Flow Rate
(per unit)
85000 m3/h
84200 m3/h
22000 m3/h
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
1
35000 m3/h
1
TBD
1
TBD
2
81500 m3/h
2
81500 m3/h
2
81500 m3/h
3
(1 stand-by)
T/B Exhaust Fan
3
(1 stand-by)
Hx/B Hx/B-N Supply
2
Fan
(1 stand-by)
Hx/B-E (A) Supply
1
Fan
Hx/B-E (B) Supply
1
Fan
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
36000 m3/h
28000 m3/h
3000 m3/h
3000 m3/h
3000 m3/h
TBD
189500 m3/h
188700 m3/h
110000 m3/h
91000 m3/h
84000 m3/h
NOT PROTECTIVELY MARKED
(Continued)
16.3-15
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Form05/01
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UK ABWR
Revision A
Table 16.3-3: HVAC Fan and Smoke Purge Fan Design Specifications (2/3)
(Provisional)
Bldg. Equipment name
Quantity
Hx/B Hx/B-E (C) Supply
Fan
C/B CBEEE (A)/Z
Supply Fan
CBEEE (B)/Z
Supply Fan
CBEEE (C)/Z
Supply Fan
CBEEE (A)/Z
Exhaust Fan
CBEEE (B)/Z
Exhaust Fan
CBEEE (C)/Z
Exhaust Fan
CBEEE (A)/Z
Smoke Purge Fan
CBEEE (B)/Z
Smoke Purge Fan
CBEEE (C)/Z
Smoke Purge Fan
MCR (A) Supply
Fan
MCR (A) Exhaust
Fan
MCR (A)
Recirculation
Supply Fan
MCR (A) Smoke
Purge Supply Fan
MCR (B) Supply
Fan
MCR (B) Exhaust
Fan
MCR (B)
Recirculation
Supply Fan
MCR (B) Smoke
Purge Supply Fan
Rw/B Rw/B Supply Fan
1
Rated Air Flow Rate
(per unit)
83000 m3/h
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
1
17000 m3/h
1
TBD
1
TBD
1*
100000 m3/h
1*
5000 m3/h
1*
8000 m3/h
1*
TBD
1*
100000 m3/h
1*
5000 m3/h
1*
8000 m3/h
1*
TBD
2
(1 standby)
2
(1 standby)
80000 m3/h
Rw/B Exhaust Fan
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
23000 m3/h
29000 m3/h
4000 m3/h
1600 m3/h
2400 m3/h
TBD
80000 m3/h
NOT PROTECTIVELY MARKED
(Continued)
16.3-16
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Form05/01
Generic Pre-Construction Safety Report
UK ABWR
Revision A
Table 16.3-3: HVAC Fan and Smoke Purge Fan Design Specifications (3/3)
(Provisional)
Bldg. Equipment name
S/B S/B Supply Fan
S/B Exhaust Fan
B/B B/B Supply Fan
B/B Exhaust Fan
Quantity
3
(1 stand-by)
3
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
Rated Air Flow Rate
(per unit)
41000 m3/h
41000 m3/h
135000 m3/h
115000 m3/h
ED/G Room
81500 m3/h
Emergency Supply
Fan
Notes: * MCR HVAC has a redundancy and operates either division (A) or (B).
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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UK ABWR
16.3.7.2.3
Revision A
Supply Air Treatment Facility and Exhaust Air Treatment Facility
The Supply Air Treatment Facility and Exhaust Air Treatment Facility Exhaust Fan are designed to
perform as following Table 16.3-4. (Provisional)
16. Auxiliary Systems
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Ver. 0
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UK ABWR
Revision A
Table 16.3-4: Supply Air Treatment Facility and Exhaust Air Treatment Facility
Design Specifications (1/3) (Provisional)
Bldg
.
Equipment
Name
Quantity
R/B R/A Supply Air
Treatment
Facility
1
R/A Exhaust
Air Treatment
Facility
PCV Purge
Supply Filter
Unit
DGEE (A)/Z
Supply Air
Treatment
Facility
DGEE (B)/Z
Supply Air
Treatment
Facility
DGEE (C)/Z
Supply Air
Treatment
Facility
ED/G (A)
Room Supply
Air Treatment
Facility
3
(1 stand-by)
ED/G (B)
Room Supply
Air Treatment
Facility
ED/G (C)
Room Supply
Air Treatment
Facility
Air Flow Rate
(per unit)
Coils
170000 m3/h Cooling coil
Cooling medium HNCW
Heating coil
Heating medium HS
84200 m3/h -
1
22000 m3/h -
1
35000 m3/h Cooling coil
Cooling medium HECW
1
36000 m3/h Cooling coil
Cooling medium HECW
1
28000 m3/h Cooling coil
Cooling medium HECW
1
202000 m3/h -
1
202000 m3/h
1
202000 m3/h -
(Continued)
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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16.3-19
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Form05/01
Generic Pre-Construction Safety Report
UK ABWR
Revision A
Table 16.3-4: Supply Air Treatment Facility and Exhaust Air Treatment Facility
Design Specifications (2/3) (Provisional)
Bldg. Equipment name
Quantity
T/B T/B Supply Air
Treatment Facility
1
T/B Exhaust Air
3
Treatment Facility (1 stand-by)
Air Flow Rate
(per unit)
Coils
379000 m3/h Cooling coil
Cooling medium
Heating coil
Heating medium
3
188700 m /h -
HNCW
HS
Hx/B Hx/B-N Supply
Air Treatment
Facility
1
Hx/B-E (A) Supply
Air Treatment
Facility
Hx/B-E (B) Supply
Air Treatment
Facility
Hx/B-E (C) Supply
Air Treatment
Facility
Rw/B Rw/B Supply Air
Treatment Facility
1
110000 m3/h Cooling coil
Cooling medium HNCW
Heating Coil
Heating medium HS
91000 m3/h -
1
84000 m3/h -
1
83000 m3/h -
1
80000 m3/h Cooling coil
Cooling medium
Heating coil
Heating medium
3
80000 m /h -
Rw/B Exhaust Air
2
Treatment Facility (1 stand-by)
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
NOT PROTECTIVELY MARKED
HNCW
HS
(Continued)
16.3-20
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UK ABWR
Revision A
Table 16.3-4: Supply Air Treatment Facility and Exhaust Air Treatment Facility
Design Specifications (3/3) (Provisional)
Bldg. Equipment name
Quantity
C/B CBEEE (A)/Z
Supply Air
Treatment Facility
CBEEE (B)/Z
Supply Air
Treatment Facility
CBEEE (C)/Z
Supply Air
Treatment Facility
MCR (A) Supply
Air Treatment
Facility
MCR (B) Supply
Air Treatment
Facility
S/B S/B Supply Air
Treatment Facility
1
1
1
1*
1*
1
S/B Exhaust Air
3
Treatment Facility (1 stand-by)
B/B
B/B Supply Air
Treatment Facility
1
Air Flow Rate
(per unit)
Coils
17000 m3/h Cooling coil
Cooling medium
HECW
23000 m3/h Cooling coil
Cooling medium
HECW
29000 m3/h Cooling coil
Cooling medium
HECW
100000 m3/h Cooling coil
Cooling medium
HECW
100000 m3/h Cooling coil
Cooling medium
HECW
82000 m3/h Cooling coil
Cooling medium
Heating coil
Heating medium
3
41000 m /h -
135000 m3/h Heating coil
Heating medium
3
202000 m /h -
HNCW
HS
Electricity
ED/G Room
1
Supply Air
Treatment Facility
Notes: * MCR HVAC has a redundancy and operates either division (A) or (B).
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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UK ABWR
16.3.7.2.4
Revision A
Local Cooling Unit
Table 16.3-5 shows the design specifications of the Local Cooling Unit. (Provisional)
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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Revision A
Table 16.3-5: Local Cooling Unit Design Specifications (1/3) (Provisional)
Unit
Quantity
1
Fan
Quantity
1
Air Flow Rate
(per unit)
10000 m3/h
1
1
10000 m3/h
RCW
1
1
10000 m3/h
RCW
1
1
15100 m3/h
RCW
1
1
15100 m3/h
RCW
1
1
2300 m3/h
RCW
FPC Pump (A) Room Local
Cooling Unit
1
1
1300 m3/h
RCW
FPC Pump (B) Room Local
Cooling Unit
1
1
1300 m3/h
RCW
FCS (A) Room Local
Cooling Unit
1
1
2400 m3/h
RCW
FCS (B) Room Local
Cooling Unit
1
1
2400 m3/h
RCW
SGTS (A) Room Local
Cooling Unit
1
1
600 m3/h
RCW
Bldg.
Equipment Name
R/B
RHR Pump (A) Room Local
Cooling Unit
RHR Pump (B) Room Local
Cooling Unit
RHR Pump (C) Room Local
Cooling Unit
HPCF Pump (B) Room
Local Cooling Unit
HPCF Pump (C) Room
Local Cooling Unit
RCIC Pump Room Local
Cooling Unit
Cooling Medium
RCW
(Continued)
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
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Form05/01
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UK ABWR
Revision A
Table 16.3-5: Local Cooling Unit Design Specifications (2/3) (Provisional)
Bldg.
Equipment Name
R/B
SGTS (B) Room Local
Cooling Unit
R/B MS Tunnel Room Local
Cooling Unit
Refuelling Machine Control
Room Local Cooling Unit
ISI Room Local Cooling
Unit
RIP FMCRD Handling Tool
Control Room Local Cooling
Unit
MSR (A) Room Local
Cooling Unit
MSR (B) Room Local
Cooling Unit
T/D-RFP Room Local
Cooling Unit
IPB/Z Local Cooling Unit
T/B
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
Unit
Quantity
1
Fan
Quantity
1
Air Flow Rate
(per unit)
600 m3/h
1
7500 m3/h
HNCW
1
2
(1 stand-by)
1
5400 m3/h
HNCW
1
1
3700 m3/h
HNCW
1
1
2220 m3/h
HNCW
1
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
18200 m3/h
HNCW
18200 m3/h
HNCW
14400 m3/h
HNCW
37300 m3/h
HNCW
1
1
1
NOT PROTECTIVELY MARKED
Cooling Medium
RCW
(Continued)
16.3-24
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Form05/01
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UK ABWR
Revision A
Table 16.3-5: Local Cooling Unit Design Specifications (3/3) (Provisional)
Bldg.
Equipment Name
T/B
T/B Supply Fan Room Local
Cooling Unit
T/B Exhaust Fan Room
Local Cooling Unit
R/A Supply Fan Room Local
Cooling Unit
R/A Exhaust Fan Room
Local Cooling Unit
IA/SA Compressor Area
Local Cooling Unit
MG Set I Room Local
Cooling Unit
MG Set II Room Local
Cooling Unit
TBD
C/B
S/B
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
Unit
Quantity
1
1
1
1
1
1
1
TBD
Fan
Quantity
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
2
(1 stand-by)
TBD
Air Flow Rate
(per unit)
13500 m3/h
Cooling Medium
HNCW
18300 m3/h
HNCW
13500 m3/h
HNCW
18300 m3/h
HNCW
9500 m3/h
HNCW
9200 m3/h
HNCW
9200 m3/h
HNCW
TBD
HNCW
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UK ABWR
16.3.7.2.5
Revision A
MCR Emergency Filter Train
Table 16.3-6 shows the design specifications of the MCR Emergency Filter Train. (Provisional)
16. Auxiliary Systems
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Ver. 0
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Form05/01
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UK ABWR
Revision A
Table 16.3-6: MCR Emergency Filter Train Design Specifications (Provisional)
Bldg.
C/B
Equipment Name
MCR (A)
Emergency Filter
Train
Quantity
Charcoal Filter
Iodine removal charcoal filter
(Bed depth of 50 mm)
Efficiency 91 % (Simple substance test)
*Relative humidity at less than or equal 70 %
90 % (In-place test)
*Relative humidity at less than or equal 70 %
MCR (B)
1*
8000 m3/h Type
Iodine removal charcoal filter
Emergency Filter
(Bed depth of 50 mm)
Train
Efficiency 91 % (Simple substance test)
*Relative humidity at less than or equal 70 %
90 % (In-place test)
*Relative humidity at less than or equal 70 %
Notes: * MCR HVAC has a redundancy and operates either division (A) or (B).
16. Auxiliary Systems
16.3 Heating Ventilating and Air Conditioning System
Ver. 0
1*
Air Flow Rate
(per unit)
8000 m3/h Type
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UK ABWR
16.3.8
Revision A
Main Support Systems
The main support systems supporting mechanical SSCs for the delivery of the HVAC
Normal/Emergency, Emergency and Normal functions are described as follows.
16.3.8.1 Control and Instrumentation (C&I) Systems
Principal objective in adapting the method of control and instrumentation is to performance and
reliability of the HVAC sub-system.
For further details refer to Generic PCSR Chapter 14 “C&I”.
16.3.8.2 Power Supply Systems
The summary of the main power supply systems are shown below. For further details on the design
refer to Generic PCSR Chapter 15 “Electrical Power Supplies”.
(1) Power supply for the Supply/Exhaust Fan of the Normal HVAC is given by the normal bus.
(2) Power supply for each Supply/Exhaust Fan that belongs to the Normal/Emergency HVAC, is
given by the emergency bus from each emergency system (divisions A, B and C). In the event
of LOOP, the power supply will be given by ED/G (divisions A, B and C).
(3) Power supply for the Normal HVAC Local Cooling Unit, the Supply Fans used for Fan Coil
Unit and the Multi-Split Air Conditioning Unit is given by the normal bus.
(4) Power supply for the Supply Fan used for the Emergency HVAC Local Cooling Unit is given
by the emergency bus based on the power supply division wherein emergency equipment that
are subjected to be cooled, are installed. In the event of LOOP, the power supply will be given
by the ED/G.
16.3.8.3 HVAC Normal Cooling Water System (HNCW)
The HNCW is a system which provides chilled water to the cooling coils within the normal Supply
Air Treatment Facilities and Normal Local Cooling Units as following.
(1) R/A HVAC
(2) T/B HVAC
(3) Hx/B-N HVAC
(4) Rw/B HVAC
(5) S/B HVAC
For further details refer to Generic PCSR Chapter 16 “Auxiliary Systems” Water Systems.
16.3.8.4 HVAC Emergency Cooling Water System (HECW)
The HECW is a system which provides chilled water to the cooling coils within the
Normal/Emergency Supply Air Treatment Facilities and consists of 3 divisions (divisions A, B and
C). Chilled water is supplied according to the needs from each HVAC division.
(1) Chilled water for HVAC supplied by HECW(A), (B) and (C)
- DGEE/Z (A), (B), (C) HVAC and CBEEE/Z (A), (B), (C) HVAC
(2) Chilled water for HVAC supplied by HECW(A) and (B)
- MCR (A), (B) HVAC
For further details refer to Generic PCSR Chapter 16 “Auxiliary Systems” Water Systems.
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16.3.8.5 Heating Steam/Heating Steam Condensate Return System (HS/HSCR)
The HS/HSCR is a system which provides steam to the steam coils within the normal Supply Air
Treatment Facilities as following.
(1) R/A HVAC
(2) T/B HVAC
(3) Hx/B-N HVAC
(4) Rw/B HVAC
(5) S/B HVAC
For further details refer to Generic PCSR Chapter 16 “Auxiliary Systems” Steam Supply System.
16.3.8.6 Reactor Building Cooling Water System (RCW)
The RCW is a system which provides cooling water for the R/A Emergency Local Cooling Units.
For further details refer to Generic PCSR Chapter 16 “Auxiliary Systems” Water Systems.
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Figure 16.3-1: Outline of the R/A HVAC
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Figure 16.3-2: Outline of the DGEE (A)/Z HVAC
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Figure 16.3-3: Outline of the DGEE (B)/Z HVAC
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Figure 16.3-4: Outline of the DGEE (C)/Z HVAC
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Figure 16.3-5: Outline of the T/B HVAC
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Figure 16.3-6: Outline of the Hx/B-N HVAC
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Figure 16.3-7: Outline of the Hx/B-E HVAC
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Figure 16.3-8: Outline of the CBEEE (A)/Z HVAC
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Figure 16.3-9: Outline of the CBEEE (B)/Z HVAC
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Figure 16.3-10: Outline of the CBEEE (C)/Z HVAC
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Figure 16.3-11: Outline of the MCR (A) HVAC
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Figure 16.3-12: Outline of the MCR (B) HVAC
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Figure 16.3-13: Outline of the Rw/B HVAC
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Figure 16.3-14: Outline of the S/B HVAC
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Figure 16.3-15: Outline of the B/B HVAC
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