MAINTENANCE OF VENTILATION SYSTEMS (SUPPLY & EXHAUST)

November 21, 2016January 16, 2024 Pharma Editor

OBJECTIVE
To lay down a procedure for Maintenance of Ventilation System
SCOPE
This SOP is applicable to Ventilation System (Supply & Exhaust).
RESPONSIBILITY
Technical Supervisor / Engineer
ACCOUNTABILITY
Sr.Executive / Manager
PROCEDURE
Weekly Maintenance
Check condition of the belt for wear, tear and damage and replace if damaged and clean the area with cora cloth
Ensure no air leakages form the rexine cloth connection.

Ensure no vibration from the system.
Ensure belt guard is proper position.
Clean the system with Cora cloth (Free from dust, grease, oil and Foreign material)

Ensure all the indication lamps are glowing.

Check and ensure the snap operation of all push button.

Put a Tick mark (Ö) in Weekly Check Sheet after completion of each activity. If it is not O.K put a cross (X) in Weekly Check Sheet indicating the reason in remarks column.

Immediately inform to the concern superior if it is not O.K (X) and take necessary corrective action as per the advice.

Any such deviations should be maintained in the Machine History Cord along with necessary corrective action and its complaints there of.
Monthly Maintenance
Re greases the motor and blower bearings. .

Tighten all terminations in the panel and clean the control panel with air blower

Put a Tick mark (Ö ) in Monthly Check Sheet and repeat the steps as per 5.1.8, 5.1.9 & 5.1.10.

Quarterly Maintenance

Clean the 20 micron filter, 10 micron filters and 5 micron filters as per SOP No:32MT060C and replace the filters if pressure drop across the filters is more than the 14 mm of WC (or) any damages and ensure no gaps between the filters and frame.

Check the cushy foot mountings of rubber pads, replace it if found any damage

Put a Tick mark (Ö ) in Quarterly Check Sheet and repeat the steps as per 5.1.8, 5.1.9 & 5.1.10.

Half Yearly Maintenance

Replace the 20 micron filters with new filters if Pressure drop across the filters is more than 14 mm WC or any damages and ensure no gap between the filters and frame.

Check the dynamic balance of the blower by empty rotation of the blower with dial gauge, make it balance if found any un balance any unbalance.

Clean the motor surface externally and re greases the motor bearings.

Put a Tick mark (Ö) in Half Yearly Check Sheet and repeat the steps as per 5.1.8, 5.1.9 & 5.1.10.
Yearly Maintenance
Replace the 10 micron filters with new filters if Pressure drop across the filters is more than 14 mm WC or any damages and ensure no gap between the filters and frame.

Replace the 05 micron filters with new filters if Pressure drop across the filters is more than 14 mm WC or any damages and ensure no gap between the filters and frame.

Check the blower bearings clearance with feeler gauge, replace the bearings if clearance more than 0.1mm

Check and ensure the CFM of blower with anemometer with respect to design parameters

Put a Tick mark (Ö) in Yearly Check Sheet and repeat the steps as per 5.1.8, 5.1.9 & 5.1.10.
Forms and Records (Annexures)
Annexury – I
Distribution
Master copy – Quality Assurance
Controlled copies- Quality Assurance, Production, Quality Control
History

Date Revision Number Reason for Revision

– 00 New SOP

Annexury – I

SL.NO	VENTILATION SYSTEM	DESCRIPTION
1	RMSV1	Raw Material Stores Supply Air Ventilation System – 1.
2	RMSV2	Raw Material Stores Supply Air Ventilation System – 2.
3	RMSV3	Raw Material Stores Supply Air Ventilation System – 3.
4	RMEX1	Raw Material Stores Exhaust Ventilation System – 1.
5	RMEX2	Raw Material Stores Exhaust Ventilation System – 2.
6	RMEX3	Raw Material Stores Exhaust Ventilation System – 3.
7	FGSV1	Finished Goods Stores Supply Air Ventilation System – 1.
8	FGSV2	Finished Goods Stores Supply Air Ventilation System – 2.
9	FGSV3	Finished Goods Stores Supply Air Ventilation System – 3.
10	FGEX1	Finished Goods Stores Exhaust Ventilation System – 1.
11	FGEX2	Finished Goods Stores Exhaust Ventilation System – 2.
12	FGEX3	Finished Goods Stores Exhaust Ventilation System – 3.

Engineering Aberdeen, Aberdeenshire, Abu Dhabi, Abu Dhalouf, Abu Hamour, Abu Samra, ABUJA, ACCRA, Acre, Ad Dawhah al Jadidah, ADDIS ABABA, Adelaide, AFGHANISTAN, Agra, Agrigento, Ahmedabad, Aïn Beïda, Ain Khaled, Ain Sinan, Ajman, Ajman and Ra’s al-Khaimah, Ajmer, Al Ain, Al Aziziya, Al Bidda, Al Daayen, Al Dafna, Al Ebb, Al Egla, Al Gharrafa, Al Ghuwariyah, Al Hilal, Al Jasrah, Al Jeryan, Al Karaana, Al Kharaitiyat, Al Kharayej, Al Kharrara, Al Kheesa, Al Khor, Al Khulaifat, Al Luqta, Al Mamoura, Al Mansoura, Al Markhiyah, Al Mashaf, Al Masrouhiya, Al Mearad, Al Messila, Al Mirqab, Al Najada, Al Nasraniya, Al Qassar, Al Rufaa, Al Sadd, Al Sailiya, Al Sakhama, Al Seej, Al Shagub, Al Souq, Al Tarfa, Al Thakhira, Al Themaid, Al Thumama (Al Wakrah), Al Thumama (Doha), Al Utouriya, Al Waab, Al Wajba, Al Wakrah, Al Wukair, Al Zubarah, Al-Shahaniya, Alagoas, ALBANIA, Alberta, Alessandria, ALGERIA, Algiers, Aligarh, Allahabad, Allerdale, Amapa, Amazonas, Amber Valley, Amersham, AMMAN, Ampthill, Amravati, Amritsar, Amsterdam, Amur, Ancona, and Craigavon, and Down, ANDORRA, ANDORRA LA VELLA, ANGOLA, Angus, ANKARA, Annaba, ANTANANARIVO, ANTIGUA & BARBUDA, Antrim and Newtownabbey, Antwerp, Aosta, APIA, Ar Ru'ays, Ards and North Down, ARGENTINA, Argyll and Bute, Arkhangelsk, Arlington, Armagh, ARMENIA, As Salatah, Ascoli Piceno, Ashbourne, ASHGABAT, ashington, Ashland, Ashmore and Cartier Islands, ASMARA, Asti, Astrakhan, ASUNCIÓN, Athens, Auckland, Aurangabad, australia, Australian Antarctic Territory, Australian Capital Territory, Austria, Avellino, Aylesbury, Aylesbury Vale, AZERBAIJAN, Baaya, BAGHDAD, BAHAMAS, Bahia, BAHRAIN, BAKU, BAMAKO, Banbridge, BANDAR SERI BEGAWAN, Bangalore, BANGKOK, Bangladesh, Bangor, BANGUI, Bani Hajer, BANJUL, Barahat Al Jufairi, BARBADOS, Barcelona, Bareilly, Bari, Barletta-Andria-Trani, Barrow-in-Furness, BASSETERRE, Bath, Batna, Bavaria, Beaconsfield, Béchar, Bedford, BEIJING, BEIRUT, Béjaïa, Belarus, Belfast, Belgium, Belgorod, Belgrade, BELIZE, Belluno, BELMOPAN, Belper, Benevento, BENIN, Bergamo, Berlin, BERN, Bhavnagar, Bhilai Nagar, Bhiwandi, Bhopal, Bhubaneswar Salem, BHUTAN, Biella, Bikaner, Birmingham, Birmingham (West Midlands), BISHKEK, Biskra, BISSAU, Blackburn with Darwen, Blackpool, Blaenau Gwent, Blida, BLOEMFONTEIN, Bloomsbury, Bodmin, BOGOTÁ, BOLIVIA, Bologna, Bolsover, Bordj Bou Arreridj, BOSNIA & HERZEGOVINA, BOTSWANA, Bou Saâda, Bournemouth, Bracknell Forest, Bradford, BRASILIA, BRATISLAVA, brazil, BRAZZAVILLE, Bremen, Brescia, Bridgend, BRIDGETOWN, Brighton, Brighton and Hove, Brindisi, Brisbane, Bristol, British Columbia, BRUNEI, BRUSSELS, Brussels-Capital Region, Bryansk, Bu Fasseela, Bu Samra, Bu Sidra, Bucharest, Buckinghamshire, Budapest, BUENOS AIRES, BUJUMBURA, Bulgaria, BURKINA FASO, Burlington, BURUNDI, Buxton, CABO VERDE, Caerphilly, Cagliari, CAIRO, Caltanissetta, CAMBODIA, Cambridge, Cambridgeshire, Camden, CAMEROON, Campobasso, canada, Canberra, Canterbury, CAPE TOWN, Cardiff, Carlisle, Carmarthenshire, Caserta, CASTRIES, Catania, Catanzaro, Causeway Coast and Glens, Ceara, Centerville, CENTRAL AFRICAN REPUBLIC, Central Bedfordshire, Ceredigion, CHAD, Chalfont St. Giles, Chandigarh, Charlottetown, Chelmsford, Chelyabinsk, Chennai, Cheshire East, Cheshire West and Chester, Chester, Chesterfield, Chichester, Chieti, CHILE, Chiltern, China, Chlef, Christmas Island, City of London, Clackmannanshire, Clayton, Cleveland, Clinton, Clydebank, Coatbridge, Cockermouth, Cocos (Keeling) Islands, Coimbatore, Coldstream, colombia, COLOMBO, Como, COMOROS, CONAKRY, Congleton, CONGO, Constantine, Conwy, Copeland, Copenhagen, Coral Sea Islands, Cornwall, Cosenza, COSTA RICA, CÔTE D'IVOIRE(Ivory Coast), Coventry, Cremona, Crewe, CROATIA, Cromarty, Crotone, CUBA, Cumbernauld, Cumbria, Cuneo, Cuttack, CYPRUS, Czech Republic, CZECH REPUBLIC (Czechia), Dahl Al Hamam, DAKAR, Dalkeith, DAMASCUS, Darlington, Darwin, Dayton, Dehradun Garhwali, Delhi, Denbighshire, denmark, Derby, Derbyshire, Derbyshire Dales, Derry, Derry and Strabane, Devon, DHAKA, Djelfa, DJIBOUTI, DJIBOUTI (CITY), DODOMA, Doha, Dombivali, DOMINICA, DOMINICAN REPUBLIC, Donetsk, Dorset, Dover, dubai, Dublin, Duhail, Dukhan, Dumfries and Galloway, Dunbar, Dundee, Dunkeld, Duns, Dunstable, Durgapur Asansol, Durham, DUSHANBE, East Ayrshire, East Devon, East Dunbartonshire, EAST JERUSALEM, East Lothian, East Midlands, East of England, East Renfrewshire, East Riding of Yorkshire, East Sussex, ECUADOR, Eden, Edinburgh, Edmonton, Egypt, El Eulma, El Oued, EL SALVADOR, Elgin, Ely, England, Enna, EQUATORIAL GUINEA, Erewash, ERITREA, Espirito Santo, Essex, estado, estados, ESTONIA, ESWATINI (formerly Swaziland), ETHIOPIA, european countries, Exeter, Fairview, Falkirk, Falmouth, Faridabad, Fenland, Fereej Abdel Aziz, Fereej Al Amir, Fereej Al Asiri, Fereej Al Asmakh, Fereej Al Manaseer, Fereej Al Murra, Fereej Al Nasr, Fereej Al Soudan, Fereej Al Zaeem, Fereej Bin Durham, Fereej Bin Mahmoud, Fereej Bin Omran, Fereej Kulaib, Fereej Mohammed Bin Jassim, Fermanagh and Omagh, Fermo, Ferrara, Fife, FIJI, Finland, Firozabad, Flintshire, Florence, Foggia, Forlì-Cesena, Forres, Fort William, Fowey, france, Frankfurt Rhine-Main Region, Franklin, Fredericton, FREETOWN SINGAPORE, Frosinone, Fujairah, FUNAFUTI, Fuwayrit, GABON, GABORONE, Galashiels, GAMBIA, Genoa, Georgetown, Georgia, Germany, GHANA, Gharrafat Al Rayyan, Ghaziabad, Glasgow, Gloucester, Gloucestershire, Goias, Gorakhpur, Gorizia, Grasmere, Greater Glasgow, Greater London, Greater Manchester, greece, Greenock, Greenville, GRENADA, Grosseto, GUATEMALA, GUATEMALA CITY, Guelma, GUINEA, GUINEA-BISSAU, Gujarati, Gulbarga, Guntur, Gurgaon, Guwahati, GUYANA, Gwalior, Gwynedd, Haddington, HAITI, Halifax, Halton, Hamad Medical City, Hamburg, Hampshire, Haora, HARARE, Hartlepool, HAVANA, Hawick, Hawke's Bay, Hazm Al Markhiya, Heard Island and McDonald Islands, Helsinki, Helston, Hereford, Herefordshire, Hertfordshire, Hesse, High Peak, High Wycombe, Highland, Hobart, HONDURAS, HONIARA, Hove, Hubli and Dharwad, Hudson, Hungary, Huntingdon, Huntingdonshire, hyderabad, ICELAND, Imperia, Indonesia, Indore, Inverclyde, Invergordon, Inverness, Iqaluit, Iran, Iraq, ireland, Irkutsk, Irvine, Isernia, ISLAMABAD, Isle of Anglesey, Isle of Wight, Isles of Scilly, ISRAEL, Istanbul, Italy, Ivanovo, Izghawa (Al Rayyan), Izghawa (Umm Salal), Jabal Thuaileb, Jabalpur, Jackson, Jaipur, JAKARTA, Jalandhar, jamaica, Jammu, Jamnagar, Jamshedpur, japan, Jelaiah, JERUSALEM, Jervis Bay Territory, Jeryan Jenaihat, Jeryan Nejaima, Jhansi, Jijel, Jodhpur, jordan, JUBA, KABUL, Kaliningrad, Kaluga, Kalyan, KAMPALA, Kanpur, KATHMANDU, Katowice urban area, KAZAKHSTAN, Kazan, Kemerovo, Kendal, Kent, KENYA, Keswick, Kharkiv, KHARTOUM, Khawr al Udayd, Kiev, KIGALI, Kingston, Kingston upon Hull, KINGSTOWN, Kinross, KINSHASA, KIRIBATI, Kirkintilloch, Kirkwall, Kirov, Knutsford, Kochi, Kolkata, KOSOVO, Kostroma, Kota, Kraków, KUALA LUMPUR, Kurgan, Kursk, kuwait, KUWAIT CITY, KYRGYZSTAN, L'Aquila, La Spezia, Laghouat, Lancashire, Lancaster, LAOS, Latina, LATVIA, Launceston, Leabaib, Lebanon, Lebday, Lecce, Lecco, Leeds, Leicester, Leicestershire, Lejbailat, Lekhwair, Leningrad, Leqtaifiya (West Bay Lagoon), LESOTHO, Lexington, LIBERIA, LIBREVILLE, LIBYA, Lichfield, LIECHTENSTEIN, Lijmiliya, Lille–Kortrijk–Tournai France/ Belgium, LILONGWE, LIMA, Lincoln, Lincolnshire, Lipetsk, Lisbon, Lisburn, Lisburn and Castlereagh, LITHUANIA, Liverpool, Livorno, LJUBLJANA, LOMÉ, london, Loni, Looe, Lossiemouth, Lostwithiel, Luaib, LUANDA, Lucca, Lucknow, Ludhian, Lusail, LUSAKA, Luton, LUXEMBOURG, M'Sila, Macclesfield, Macerata, MADAGASCAR, Madinat Al Kaaban, Madinat ash Shamal, Madinat Khalifa North, Madinat Khalifa South, Madison, Madrid, Madurai, Magadan Moscow, Maghnia, MAJURO, MALABO, malawi, Malaysia, MALDIVES MALE, MALI, MALTA, MANAGUA, MANAMA, Manchester, MANILA, Manitoba, Mantua, Maranhao, Marlborough, Marlow, Marseille, Mascara, MASERU, Massa and Carrara, Matera, Matlock, Mato Grosso, Mato Grosso do Sul, MAURITANIA, mauritius, MBABANE, Mebaireek, Médéa, Medway, Meerut, Mehairja, Melbourne, Merseyside, Merthyr Tydfil, Mesaieed, Mesaimeer, Messina, Mexico, MEXICO CITY, Mid and East Antrim, Mid Ulster, Middlesbrough, Midlothian, Milan, Milford, Milngavie, Milton, Milton Keynes, Minas Gerais, Minsk, Modena, MOGADISHU, Monmouthshire, MONROVIA, MONTEVIDEO, Monza and Brianza, Moradabad, Moray, MORONI, Moscow, Mostaganem, Motherwell and Wishaw, Mount Vernon, Mourne, Muaither, Mumbai, Muraikh, Murmansk, MUSCAT, Mushayrib, Myaanmar (Burma), Mysore, N'DJAMENA, Nagpur, NAIROBI, Najma, NAMIBIA WINDHOEK, Nanded Kolapur, Nantwich, Naples, Nashik, NASSAU, NAURU, Navi Mumbai, Neath Port Talbot, Nellore, Nelson, Nepal, Netherlands, New Al Hitmi, New Al Mirqab, New Al Rayyan, New Brunswick, New Fereej Al Ghanim, New Fereej Al Khulaifat, New Plymouth, New Salata, New South Wales, new Zealand, Newfoundland and Labrador, Newport, NewportAuburn, Newquay, Newry, NGERULMUD, NIAMEY, NICARAGUA, NICOSIA, NIGER, Nigeria, Nizhniy Novgorod, Nizhny, Noida, Norfolk, Norfolk Island, North, North Ayrshire, North East Derbyshire, North East Lincolnshire, NORTH KOREA, North Lanarkshire, North Lincolnshire, NORTH MACEDONIA, North Somerset, North West, North Yorkshire, Northamptonshire, Northern, Northern Ireland, Northern Territory, Northumberland, Northwest Territories, Northwich, Norway, Norwich, Nottingham, Nottinghamshire, NOUAKCHOTT, Nova Scotia, Novara, Novgorod, Novosibirsk, Nu`ayjah, Nunavut, Nuoro, NUR-SULTAN, Nuremberg, Oakland, Old Al Ghanim, Old Al Hitmi, Old Al Rayyan, oman, Omsk, Onaiza, ontario canada, OntarioToronto, Oran, Orenburg, Oristano, Orkney Islands, Oryol, OSLO, Otago, Ottawa, OUAGADOUGOU, Ouargla, Oxford, Oxfordshire, Padua, Paisley, Pakistan, PALAU, Palermo, PALESTINE, PANAMA, PANAMA CITY, PAPUA NEW GUINEA, Para, PARAGUAY, Paraiba, PARAMARIBO, Parana, Paris, Parma, Patna, Pavia, Pembrokeshire, Penrith, Penryn, Penza, Penzance, Pernambuco, Perth, Perth and Kinross, peru, Perugia, Pesaro and Urbino, Pescara, Peterborough, Philippines, PHNOM PENH, Piacenza, Piaui, Pimpri, Pisa, Pistoia, Plymouth, Poland, Poole, Pordenone, PORT LOUIS, PORT MORESBY, PORT OF SPAIN, PORT VILA, PORT-AU-PRINCE, Porto Portugal, PORTO-NOVO, Portsmouth, portugal, Potenza, Powys, Prague, PRAIA, Prato, Preston, PRETORIA, Prince Edward Island, PRISTINA, Pskov, Pune, PYONGYANG, Qatar, Quebec City, Queensland, QUITO, Ragusa, Raipur, Rajkot, Ramsey, Ranchi, Ras Abu Aboud, Ras Al Khaimah, Ras Lafan, Ravenna, Rawdat Al Hamama, Rawdat Al Khail, Rawdat Egdaim, Rawdat Rashed, Reading, Redcar and Cleveland, Reggio Calabria, Reggio Emilia, Regina, Relizane, Renfrew, Renfrewshire, Repton, REYKJAVIK, Rhondda Cynon Taf, Rieti, RIGA, Rimini, Rio de Janeiro, Rio Grande, Ripon, Riverside, RIYADH, Romania, Rome, ROSEAU, Rostov, Rotterdam, Rovigo, Rumeilah, Russia, Rutland, RWANDA, Ryazan, Saharanpur, Saïda, SAINT GEORGE'S, SAINT JOHN'S, SAINT KITTS & NEVIS, SAINT LUCIA, Saint Petersburg, SAINT VINCENT & THE GRENADINES, Sakhalin, Salem, Salerno, Salford, Salisbury, Saltash, Samara, SAMOA, SAN JOSE, SAN MARINO, SAN SALVADOR, Sandhurst, SANTIAGO, SANTO DOMINGO, SÃO TOMÉ & PRÍNCIPE, SÃO TOMÉ SAUDI ARABIA, SARAJEVO, Saratov, Saskatchewan, Sassari, Savona, Sawda Natheel, Saxony, Scotland, Scottish Borders, SENEGAL, SEOUL, Serbia, Sétif, Seville, SEYCHELLES, Shagra, Sharjah, Sheffield, Shetland Islands, Shropshire, Sidi bel Abbès, Siena, SIERRA LEONE, Siliguri, Simaisma, singular, Skikda, SKOPJE, Slough, SLOVAKIA, SLOVENIA, Smolensk, Sofia, Solapur, SOLOMON ISLANDS, SOMALIA, Somerset, Sondrio, Souk Ahras, SOUTH AFRICA, South Australia, South Ayrshire, South Bucks, South Cambridgeshire, South Derbyshire, South East, South Gloucestershire, SOUTH KOREA, South Lakeland, South Lanarkshire, South Sardinia, SOUTH SUDAN, SOUTH TARAWA, South Tyrol, South West, South Yorkshire, Southampton, Southend-on-Sea, Southland, spain, Springfield, SRI JAYAWARDENEPURA KOTTE, Sri Lanka, Srinagar, St Albans, St Asaph, St Davids, St. Austell, St. Ives, St. John's, Staffordshire, Stirling, STOCKHOLM, Stockton-on-Tees, Stoke Poges, Stoke-on-Trent, Stuttgart, SUCRE, sudan, Suffolk, Sunderland, Surat, SURINAME, Surrey, SUVA, Sverdlovsk, Swansea, Sweden, Swindon, switzerland, Sydney, Syracuse, SYRIA, TAJIKISTAN, TALLINN, Tambov, TANZANIA, Taranto, TASHKENT, Tasmania, TBILISI, Tébessa, TEGUCIGALPA, TEHRAN, Telford, Telford and Wrekin, Teramo, Terni, Thailand, Thane, The Hague, The Pearl, THIMPHU, Thiruvananthapuram, Thuringia, Thurrock, Thurso, Tiaret, TIMOR-LESTE DILI, Tintagel, TIRANA, Tiruchirappalli, Tizi Ouzou, Tlemcen, TOGO, TOKYO, Tomsk, TONGA NUKUʻALOFA, Torbay, Trapani, Trento, Treviso, Trieste, TRINIDAD & TOBAGO, TRIPOLI, Truro, Tula, TUNIS, TUNISIA, Turin, turkey, TURKMENISTAN, TUVALU, Tver, Tyne and Wear, Tyumen, Udine, UGANDA, Ujjain, Ukraine, Ukraine. Dnipropetrovsk, Ulhasnagar, Ulyanovsk, Umm al-Qaiwain, Umm al-Quwain, Umm Bab, Umm Birka, Umm Ghuwailina, Umm Lekhba, Umm Qarn, Umm Salal Ali, Umm Salal Mohammed, United arab emirates, UNITED ARAB EMIRATES (UAE), united Kingdom, UNITED KINGDOM* (UK), united state, United States, UNITED STATES OF AMERICA (USA), URUGUAY, UZBEKISTAN, Vadodara, VADUZ, Vale of Glamorgan, Valencia, VALLETTA MARSHALL ISLANDS, VANUATU, Varanasi, Varese, Vasai Virar, VATICAN CITY, VATICAN CITY (Holy See), VENEZUELA CARACAS, Venice, Verbano-Cusio-Ossola, Vercelli, Verona, Vibo Valentia, Vicenza, Victoria, Vienna, VIENTIANE, VIETNAM HANOI, Vijayawada, VILNIUS, Visakhapatnam, Viterbo, Vladimir, Volgograd, Vologda, Voronezh, Wadi Al Banat, Wadi Al Sail, Wadi Al Wasaah, Wadi Lusail, Wakefield, Wales, Warrington, Warsaw, Warwickshire, Washington, Wellington, Wells, West Berkshire, West Dunbartonshire, West Lothian, West Midlands, West Sussex, West Yorkshire, West Yorkshire (Bradford–Leeds), Western Australia, Western Isles, Westland, Whitehaven, Whitehorse, Wick, Wiltshire, Winchester, Windsor and Maidenhead, Winnipeg, Wisbech, Wokingham, Wolverhampton, Worcester, Worcestershire, Workington, Wrexham, Wrexham Qatar, Wycombe, YAMOUSSOUKRO, YAOUNDE, YAREN DISTRICT, Yaroslavl, Yellowknife, YEMEN SANA'A ZAMBIA, YEREVAN, York, Yorkshire and the Humber, Yukon, ZAGREB, ZIMBABWE, Zürich