FF-Chapter-04

Chapter 04: Pumps CH NG 04: B M CHAPTER 04: PUMPS Khái quát General 1.1 Mô t .3 Decription 1.2 Nhà s n xu t Manufacture 1.3 S l a ch n Selection 1.4 Tiêu chu n: Standards: .6 Thi t b Equipment 2.1 T ng quát: .6 General: 2.2 B m hút ly tâm: .6 End suction pumps: 2.3 B m tr c ng a c p: Vertically mounted pumps (jockey pumps) 2.4 Mô-T : Motors 2.5 Bu ng b m: Pump casings generally 2.6 Kh p n i m m: Flexible connections 2.7 Ph ki n: 10 Accessories 10 2.8 V n b o v : 10 Guards 10 2.9 Ph tùng thay th : 11 Spare parts 11 Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps L p t 11 Installation 11 3.1 C nh thi t b : 11 Mounting 11 3.2 H th ng x n c: 12 Drainage 12 3.3 Hoàn thi n: 12 Finishes 12 3.4 ánh d u nh n d ng: 13 Identification 13 Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps Khái quát General 1.1 Mô t Decription M c quy nh nh ng tiêu chu n k thu t cho b m b truy n ng cho h th ng khác nhau, m t ph n công tác th hi n b n v This Section specifies the pumps and drives for the various systems which shall form part of the Works as shown on the Drawings 1.2 Nhà s n xu t Manufacture T t c b m b truy n ng ph i c cung c p b i m t nhà s n xu t có nhi u kinh nghi m thi t k , ch t o thi t b t ng t ã ch t o b m có ch c n ng nh t n m All pumps and drives shall be supplied from a single manufacturer experienced in the design and construction of similar equipment and who have made pumps for similar duties for at least five years 1.3 S l a ch n Selection Nhà th u ph i l a ch n t t c b m có ch c n ng phù h p T t c b m ph i có c t áp cao h n nh t 10% so v i i u ki n làm vi c T t c mô –t d phòng cho nh ng nhu c u m i c a b m ph i có cơng su t cao h n 20% công su t yêu c u i u ki n làm vi c The Contractor shall select all pumps suitable for the scheduled duties Pumps shall be capable of at least 10% head increase at rated conditions by installing a new impeller All pump motors shall be provided with a 20% margin over the specified operating conditions Chi u cao c t áp c a b m th hi n b n v hay b ng li t kê thi t b ã c cho ch có giá tr tham kh o b th u, nhà th u có trách nhi m ki m tra yêu c u t ng th cu i c a t ng h th ng, c n c thi t b tr c "t hàng B t k# s Project: Estella Heights – Phase thay !ng i ng th c t yêu c u c a i cho h th ng c$ng nh b Page: / 14 Chapter 04: Pumps ph n c a chúng nh b m, !ng ng, môt , dây d%n i n, công t&c chuy n th a mãn ch c n ng cu i s chi phí, ng tr nh ng thay i h n ch v không gian c th c hi n theo v n b n h i, … u nhà th u ch u ng d%n c a Ki n Trúc S The pump heads given in the Schedules are given for guidance during tendering only, and the Contractor shall be responsible for checking the total final resistance of each system, based on the actual pipe runs and equipment offered, prior to ordering Any modifications to the system or any of its components, i.e pumps, pipework, motors, cables, switchgear, etc., which may be required to meet the scheduled duties and space limitations shall be carried out at the Contractor's expense, excepting where modification is brought about by the written instruction of the Architect M"c dù v y, khơng có s thay i c th c hi n n u chúng làm gi m kh n ng hay hi u su t c a h th ng Notwithstanding the provisions of the above, no modifications to any system shall be carried out where such modification may result in a reduction in system performance or efficiency Các l b m có !ng "c tính n nh t ng n i mc c i s ch n nhi u h n cho ng d ng khác nh t c n làm vi c song Khi v n hành ch c u tiên l a ch song song song, c t áp t ng cho hay t ng b m 10% n 20% Pumps that have a stable head/capacity curves which rise to shut off are preferred for all applications and are required when parallel operation is specified When parallel operation is specified, the head rise for one and two stage pumps shall be 10% to 20% of the head at rated capacity T i thi u b m ph i có "c tính s không b nghiêng v n hành t i m v n hành l u l b'ng ph(ng su t ti n trình t ng t i thi u bên sang t i i m v n hành l u l ng t i a bên ph i The minimum pump characteristics shall be non-falling and as flat as possible to the left of the least flow operating point and as steep as possible to the right of the maximum flow operating point Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps ) phun phù h p s c l&p "t t i th!i i m b m x t c công su t l u l ng "c tính A suitable orifice plate shall be provided at the discharge of the pump in order to achieve the duty flow characteristics Tr có yêu c u khác, l b m c ch n ph i có t c làm vi c khơng q 1450 vịng/phút Unless otherwise specified, pumps shall be selected for use with speed not exceeding 1450 rpm B m ph i m nh c áp l c th* n ch u c áp l c n c va p khác, ngòai ph i ch u c 1200 KPa ho"c 1,5 l n l n h n áp su t làm vi c n u cao h n The pumps shall be of adequate strength to withstand the hydraulic and other forces encountered but in any case shall be capable of withstanding a minimum hydrostatic test pressure of 1,200 kPa or 1.5 times of the working pressure, whichever is the higher T t c b m ph i làm b'ng v t li u t l ng ng thích v i "c tính v t lý hóa h c c a ch t c b m All pumps shall be constructed with materials compatible with the chemical and physical properties of the liquid to be pumped T tc b m u ph i c cân b'ng t+nh ng All pumps and motors shall be statically and dynamically balanced Nhà th u ph i tính n kh n ng l&p l%n ph tùng ph ki n d dàng l a ch n cung c p b m t m t nhà s n xu t The Contractor shall allow for the interchangeability of spare parts and accessories in the selection of each unit, and in supplying all pumps from a single manufacturer T ng c m b m hịan ch nh bao g,m mơ-t , b truy n ng khung m t nhà s n xu t cung c p v i tòan b ch ng t b o hành, ki m tra ch t l th ch ng t chúng ã ph i ng v.v…có c l&p "t hịan ch nh thành m t kh i Each complete pump unit including motor, drive and base plate shall be supplied from a single manufacturer and all guarantees, test certificates, etc., shall be deemed to apply to the entire assembly Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps Các l b m d- b h h ng n u b quay ng i chi u c cung c p v i m t b ch ng c chi u Pumps which could be damaged by reverse rotation shall be provided with a non-reverse ratchet Các b m l&p "t ph i n i khung Không c nh p kh u nguyên b hòan ch nh bao g,m b m, môt , kh p c dùng b b m c l&p ráp t i n i a All pump assemblies shall be imported as complete units comprising pump, motor coupling and base plate Local assembly of pump sets shall not be permitted B m ph i có ngu,n g c t n c thu c kh i EEC, B&c M ho"c Nh t B n ph i c ng !i có th m quy n li t kê danh m c Pumps assemblies shall be of EEC, North American or Japanese origin and listed by an approval Authority 1.4 Tiêu chu n: Standards: T t c b m ph i lo i c a LPC, PSB FM, ho"c UL All pumps shall be LPC, or UL listed PSB FM compliance Thi t b Equipment 2.1 T ng quát: General: Các b m c l&p "t theo chi u ngang hay ng theo th hi n c a b n v ho"c/và danh m c thi t b Pumps shall be mounted horizontally or vertically as shown on the Drawings and/or equipment schedule 2.2 B m hút ly tâm: End suction pumps: B m hút ly tâm ph i l mi ng hút n, xo&n n End Suction pumps shall be of the single suction, single volute, centrifugal type Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps Cánh b m làm b'ng ,ng thi c / h p kim theo tiêu chu n BS 1400 c a lo i v c cân b'ng t+nh, h p v i toàn b ng thu l c ch ng t i i u ki n v n hành Cánh b m ph i ôi, ã c thi t k xác phù c ráp c nh vào tr c b m Impellers shall be bronze/gunmetal to BS 1400 of the double entry shrouded type, statically, dynamically and hydraulically balanced of non-overloading characteristic and correctly designed for all operating conditions Impellers shall be securely keyed to the pump shaft Các vòng m ch ng mài mịn có th thay th b m ph i theo h c ph i thích h p v i ch t l ng c ng d n c a nhà s n xu t Tr c b m ph i thép không g 316, v b'ng thép không g / ,ng thau ph i ch ng xoay ch ng l i s c b&t ch"t n mòn quanh tr c The shafts shall be of 316 stainless steel with stainless steel/bronze sleeves keyed to prevent rotation and secured against axial thrust B c n ph i l úng theo s ch d n c a nhà s n xu t lên u tr c bánh cơng tác v i vịng th c ho"c b t k# tác ch ng l i nh ng tác m ch ng rò r d u ch ng l i s ng xâm ng bên ngòai Bearings shall be of a type recommended by the manufacturer to prevent end thrust on the impeller shaft and with neoprene oil sealed rings designed to prevent ingress of any foreign matter V b m ph i b'ng gang xám theo tiêu chu n BS 1452 The pump casings and covers shall be of cast iron to BS 1452 B m ph i c cung c p v i l v thích h p cho c l vịng làm kín B m ph i c l&p "t ch y th* v i vịng mc m kín, vòng l%n vòng mc s m c l&p sau tháng v n hành The pump shall be supplied with a stuffing box suitable for both mechanical seals and packed seals The pump shall be set up and commissioned using the packed gland, and the mechanical seal shall be installed after six months of operation Vòng m tr c ph i l c khí c a hãng Crane hay t ng ng V t li u b m"t ph i thép không g hay h p kim Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps Shaft seals shall be of the Crane mechanical type or equal The facing material shall be of stainless steel and stellite B m hút ph i có thi t k ph n l ng r!i v i mi ng chuy n ng mà không nh h ng n l&p "t m n i, có th tháo r!i ph n !ng ng, môt d%n ng hay c nh End suction pumps shall be of back pull out design with spacer type coupling, enabling the removal of the entire rotating assembly without disturbing the pipe installation, or driving motor or mountings 2.3 B m tr c ng a c p: Vertically mounted pumps (jockey pumps) B m ac p ng cd n ng b i mô-t tr c th(ng ng thông qua tr c th(ng c n i dài v i kh p n i a n ng Vertically mounted pumps shall be driven by elevated "in-line" motors via an extended vertical drive shaft complete with "universal type" couplings Mô-t l c l&p b i m t thi t b r!i b'ng thép tr c d n ng s c b o v b'ng m t i an tòan The motors shall be supported by a separate steel stool and the drive shaft shall be completely protected by a mesh safety screen 2.4 Mô-T : Motors Mơ t ph i có cơng su t l n h n 20% công su t làm vi c c n thi t Motors shall have a 20% margin over the specified pump operating conditions Mô t c a b m ph i lo i phù h p ch u c rò r n c v n hành v i dòng i n 415v/3 pha/50Hz Pump motors shall be of the drip proof squirrel cage type suitable for operation on a 415 Volts/3 Phase/50 Hz supply Mô-t b m, b kh i ng công t&c chuy n i ph i tuân theo tiêu chu n c c p ph n “L&p )"t h th ng i n” c a )"c )i m K Thu t Pump motors, starters and switchgear shall comply in all respects to the "Electrical Installation" Section of this Specification Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps T t c b m ph i quy c k t n i ch"t ch v i v i nh ng thi t b khác theo n i dung chi ti t nh tiêu chu n k thu t hay ã c th hi n b n v / danh m c thi t b All pumps shall be interlocked with other equipment in accordance with the details contained in this Specification and shown on the Drawings and Schedules 2.5 Bu ng b m: Pump casings generally Bu,ng b m ph i t tc c gia cơng l&p "t xác b'ng m i n i kim l v i kim l !ng i c a n c ph i nh(n bóng Casings shall be accurately machined and assembled with metal to metal joints and all waterways shall be finished smooth Các h ng hút c p n c n i v i b m ph i m"t bích theo tiêu chu n B.S 4504 Suction and delivery connections to the pumps casings shall be flanged to B.S 4504 2.6 Kh p n i m m: Flexible connections Nhà th u ph i cung c p kh p n i m m cho m m ph i có u vào c a t ng b m Kh p n i u m"t bích phù h p tiêu chu n BS 4504 ph i ch u c áp su t l n g p 1.5 l n áp su t làm vi c bình th !ng c$ng nh áp su t ki m tra h th ng b m Kh p n i m m ph i có áp su t phá v/ th p nh t 57.5 bar The Contractor shall provide flexible pipe connections at the pump suction and discharge sides for each of the pumps The flexible connections shall have flanged ends with flanges BS 4504 and must be suitable for 1.5 times the working conditions and for the test pressure of the pumped system The minimum burst pressure for all flexible connection shall be 57.5 bars H th ng ng ph i có nh ng giá / thích h p nh ng nh h ng rung c hai phía kh p n i m m tránh ng Pipework shall be adequately supported on both sides of the flexible connection to eliminate all lateral forces on the joint except those due to vibration only Các giá / v phía b m c a m i n i ph i c l&p cho khơng truy n rung ng xu ng tịa nhà Project: Estella Heights – Phase Page: / 14 Chapter 04: Pumps Any such supports on the pump side of the joint shall be mounted so as not to transmit vibration to the building 2.7 Ph ki n: Accessories M0i b m c l&p v i vòi x gió ,ng h, áp l c m0i bên b m Each pump shall be fitted with an air cock, drain plug and a pressure gauge on each side of the pump ),ng h, áp l c ph i lo i m"t +a v i áp su t !ng kính 150mm Ph m vi o ph i thích h p v i c l a ch n cho i m làm vi c bình th !ng n'm kh ang 3/4 thang o Nh ng ,ng h, l&p bên ph n hút c a b m ph i l túyp Bourdon v i ng syphon b'ng ,ng van khóa v i màu en, ph n ch th t i màu h, ph i có nv !ng ng n i vào i m o ),ng h, ph i có kim g ch áp su t làm vi c bình th !ng ),ng o KPa Pressure gauges shall be 150mm diameter dial type Scale ranges shall be suitable for the pressures and selected so that the normal operating point is in the third quarter of the range For those fitted on the suction side, they shall be of the Bourdon tube type with brass syphon and cock with piping connections to the measuring point Gauges shall have black pointers, red overrun indicators, and red mark at normal working pressure Gauges must be calibrated in kilo pascals (Kpa) ),ng h, ph i c g&n c Qu n Lý D Án ch nh vào b ng g0 c ng t !ng ho"c m t n i b t k# cho nh T t c ,ng h, ph i c dán nhãn The gauges shall be mounted on a hardwood gauge board on the wall or elsewhere as directed by the Project Manager All gauges shall be clearly labelled 2.8 V n b ov : Guards T t c ph n chuy n ng, tr c, kh p n i c a b m b l bên ngịai v thích h p b'ng nh ng khung l l&p d dàng Chú ý u ph i cb o i làm b'ng làm b'ng thép góc v ng ch&c, có th tháo khung khơng phát ti ng ,n rung All exposed shafts, couplings and moving parts of pumps shall be provided with suitable galvanized iron wire mesh guards which shall be stoutly constructed, easily removable, Project: Estella Heights – Phase Page: 10 / 14 Chapter 04: Pumps and provided with lifting handles Care shall be taken that these guards not cause "ring" and/or create vibration noise 2.9 Ph tùng thay th : Spare parts M0i c m cho ch u ph i i kèm v i m t b ph tùng thay th y ph i c bàn giao l i u t h t th!i h n b o trì Each unit shall be provided with a full set of spare parts which shall be handed over to the Employer intact at the end of the Maintenance Period Danh m c ph tùng thay th ph i tuân theo ch d n c a nhà cung c p thi t b ph i c cung c p nh ng ph tùng quan tr ng b o trì s*a ch a su t th!i gian b o trì The list of spare parts shall be as recommended by the equipment supplier and shall be provided over and above all other spares required for maintenance and repairs during the Defects Liability Period T t c ph tùng thay th bàn giao cho ch u t ph i c "t h p làm b'ng s&t tráng k m v i nh ng t ghi “Ph tùng thay th cho …” v i tên thi t b s l u tr c in n&p Bên m0i h p có catalogue th cho t ng thi t b ph i mã s y c a ph tùng thay c ch a bao nh a ch ng th m n c ính kèm "t hàng r ràng All spare parts shall be handed over to the Employer in purpose made lockable galvanized steel cabinets with the words "Spare Parts for " and the equipment name and reference number stencilled on the lid Inside each cabinet in a clear plastic waterproof folder shall be a complete spares catalogue for the respective equipment with re-order numbers clearly defined L p t Installation 3.1 C nh thi t b : Mounting Các b m tr c ngang ph i c l&p "t v i c m m t n n v i ub m ph i th(ng hàng Project: Estella Heights – Phase Page: 11 / 14 Chapter 04: Pumps Horizontally mounted pumps shall be installed with the pump and complete drive assembly located on a common cast iron bedplate which shall be machine-finished and accurately aligned Khung b m ph i c nh nh ng b bêtơng có h th ng gi m rung Nhà th u ph ph i có trách nhi m cung c p b bêtông Pump bases shall be mounted on structural concrete inertia blocks with vibration isolators The Sub-Contractor shall be responsible for furnishing the inertia blocks Nhà th u ph ph i ph i h p v i công tác bê tông "t c nh bu lơng nh ng v trí c n thi t All holding down bolts and fixings shall be provided by the Sub-Contractor for incorporation in the concrete work where required Các thành ph n c a b m ph i c m c l&p "t nh theo ch c b&t xu ng tr c b m mô-t s nh h th ng sau c ki m tra tính th(ng hàng xác n u c n thi t The pump units shall be installed as indicated on the plans and after the units are bolted down the pumps and motor shafts shall be checked for alignment and corrected if necessary 3.2 H th ng x n c: Drainage Ng tr tr !ng h p nh ng b m khơng có mi ng n m, s c rị r thơng qua h th ng ng x b'ng ,ng n i t b m c cung c p thu gom n i m x sàn g n nh t Except in the case of glandless pumps leakage, the Sub-Contractor shall install a copper drain pipe to collect gland leakage from the pump to the nearest gulley or drain point 3.3 Hoàn thi n: Finishes T t c b m ph i c s n t i nhà máy theo s ch d%n c a nhà s n xu t Màu s n ph i c th ng nh t v i Qu n lý D án All pumps shall be factory painted in accordance with the manufacturer's recommendations The colour of the pumps shall be agreed with the Project Manager Project: Estella Heights – Phase Page: 12 / 14 Chapter 04: Pumps B t k# h h ng x y cho l p hịan thi n q trình v n chuy n, l u kho, l&p "t hay nh ng nguyên nhân khác ch t o u ph i c s*a ch a theo h ng d%n c a nhà làm v a lòng Qu n lý D án Any damage to finishes which may have occurred during transit, storage, installation or otherwise shall be made good in the manner recommended by the manufacturer and to the satisfaction of the Project Manager Thêm vào ó, c m có th có yêu c u ánh d u riêng ph i s n l i theo màu qui nh c a Ki n Trúc S In addition, the units may require to be insulated and given another finishing coat (or coats) as specified elsewhere to match the Architect's colour coding for the plant room 3.4 ánh d u nh n d ng: Identification Trên t ng b m ph i có b n s hi u có mã s trùng v i mã s h th ng B ng s hi u ph i c g&n vào b m ã c ch th s , v trí d nhìn th y Each pump shall be provided with an identification plate showing the code number for each unit, corresponding with the code numbers indicated on the system schematics This plate shall be securely fixed to the pump in a prominent position Ngòai t ng c m b m c$ng ph i có b ng thông s v i b m, t c quay, c !ng i m b m, l u l dòng i n, ng cho ch c n ng y chi ti t v kích th c !ng kính cánh b m, l d u bôi tr n, "c c ch nh thông s khác theo yêu c u c a Qu n lý D án n u có B ng thơng s c$ng ph i c g&n c nh vào b m In addition, each unit shall have a specification plate which shall show full details of the pump size, rpm, amperes, impeller diameter, lubricants, pump characteristics, flows for the duty specified and any other pertinent information as may be required by the Project Manager This plate shall also be securely fixed to the pump T t c b m ph i có b ng hi u c a nhà ch t o bao g,m tên nhà s n xu t, s seri, model ngày s n xu t All pumps shall bear the manufacturer's nameplate giving manufacturer's name, pump serial number and model number and date of manufacture Project: Estella Heights – Phase Page: 13 / 14 Chapter 04: Pumps C u t o c a b ng thông s nhãn hi u ph i theo m c “ H0n h p” )"c )i m K Thu t Construction of identification plates and labels shall be as specified in the "Miscellaneous Provisions" Section of this Specification Project: 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