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d r ai n T R A D E R


B e df o r d P u m p s t o p r o vi d e fi s h f ri e n dl y c o n c r et e c a si n g p u m p s at Hi st o ri c P u m pi n g St ati o n sit e


B


e df or d P u m ps, t h e U K’s l e a di n g m a n uf a ct ur er of hi g h c a p a cit y p u m ps f or


l a n d dr ai n a g e a n d fl o o d c o ntr ol, h as b e e n a w ar d e d a pr esti gi o us c o ntr a ct t o s u p pl y fis h fri e n dl y c o n cr et e c asi n g p u m ps ets f or a n e w p u m pi n g st ati o n at Isli n gt o n.


Isli n gt o n P u m pi n g St ati o n ( P. S.) is a hist ori c p u m pi n g st ati o n l o c at e d i n Ki n gs L y n n, N orf ol k. It is o w n e d a n d o p er at e d b y Ki n gs L y n n I nt er n al Dr ai n a g e B o ar d (I D B) t o p u m p w at er fr o m t h e I D B’s dr ai n t o t h e ti d al s alt m ars h es of T h e W as h. T h e p u m pi n g st ati o n pr o vi d es pr ot e cti o n t o al m ost 6 0 0 0 h e ct ar es, m a ki n g it t h e l ar g est si n gl e c at c h m e nt wit hi n t h e B o ar d’s distri ct. T h e c at c h m e nt is l ar g el y f e nl a n d s o c o ns e q u e ntl y w at er is dr a w n t o t h e st ati o n t hr o u g h t h e a cti o n of t h e p u m ps r at h er t h a n gr a vit y f e d.


T h e e xisti n g p u m pi n g st ati o n at Isli n gt o n w as c o nstr u ct e d i n 1 9 5 9 a n d o p er at e d wit h t hr e e di es el e n gi n e p o w er e d p u m ps r at e d at 2, 8 0 0 l/s e a c h. T h e p u m pi n g st ati o n h as n o w r e a c h e d t h e e n d of its s er vi c e lif e a n d will b e d e m olis h e d f oll o wi n g t h e c o nstr u cti o n of t h e n e w b uil d st ati o n w hi c h will b e sit u at e d at t h e e n d of t h e “ Str ai g ht Mil e”.


4 0


T h e n e w st ati o n will h a v e a t ot al p u m pi n g c a p a cit y of 1 6, 0 0 0 l/s a n d is d esi g n e d ar o u n d f o ur c o n cr et e c asi n g p u m ps o p er ati n g at a c a p a cit y of 4, 0 0 0 l/s p er p u m p; t o p ut t his i nt o p ers p e cti v e, r u n ni n g at f ull c a p a cit y t h e p u m pi n g st ati o n w o ul d b e c a p a bl e of p u m pi n g 1. 4 billi o n litr es of w at er p er d a y.


T h e p u m p c asi n g is of a c o n cr et e c ast c o nstr u cti o n a n d is d esi g n e d t o o p er at e wit h a f or m e d s u cti o n i nt a k e s p e ci fi c all y d esi g n e d b y B e df or d P u m ps Lt d. T h e v ast s u cti o n i nt a k e ( pi ct ur e d Fi g 3. t o s c al e) w as s c al e m o d el t est e d a n d o pti mis e d at H y dr ot e c C o ns ult a nts Lt d.’s l a b or at or y, o p er ati n g at a t ot al st ati o n c a p a cit y of 2 0, 0 0 0 litr es p er s e c o n d, t h us pr o vi n g t h e i nfr astr u ct ur e f ut ur e pr o of. T h e r es ults w er e o utst a n di n g, wit h u nif or m fl o w p att er ns at t h e i m p ell er i nl et a n d fr e e fr o m pr e-s wirl, e ntr ai n e d air a n d s urf a c e a n d s u b m er g e d v orti c es. T h e m o d el t est s h o w e d t h at t h e i nt a k e d esi g n all o w e d f or i n cr e di bl y l o w mi ni m u m o p er ati n g w at er l e v els. T h e B e df or d P u m ps i nt a k e d esi g n o ff ers si g ni fi c a nt a d v a nt a g es o v er a st a n d ar d A N SI ‘t y p e 1 0’ i nt a k e s u c h as a si g ni fi c a nt r e d u cti o n i n t h e o v er all f o ot pri nt a n d all o wi n g t h e w at er l e v els t o b e dr a w n d o w n t o h alf t h e mi ni m u m


d r ai n T R A D E R | M ay 2 0 2 0 | w w w. dr ai ntr a d erlt d. c o m


s u b m er g e n c e w h e n c o m p ar e d t o t h e t y p e 1 0 d esi g n. T h e u ni q u e c o m bi n e d d esi g n of t h e p u m ps a n d t h e i nt a k e pr o vi d es a v er y l o w f o ot pri nt a n d will si g ni fi c a ntl y r e d u c e t h e e x c a v ati o n c osts o n sit e b y all o wi n g t h e pi p e w or k t o b e m u c h cl os er t o t h e s urf a c e. T h e f or m e d s u cti o n i nt a k e will b e c o nstr u ct e d o n sit e usi n g v er y pr e cis e 3 D pri nt e d p ol yf or m f or m ers, all o wi n g t h e ci vils c o ntr a ct or t o a c c ur at el y cr e at e t h e c o n cr et e i nt a k e.


T h e f o ur p u m ps ets als o f ul fil t h e r e q uir e m e nt f or Isli n gt o n P. S. t o b e “ Fis h Fri e n dl y”. Alt h o u g h ill- d e fi n e d, t h e t er m ‘ Fis h Fri e n dl y’ i m pli es a m a c hi n e w hi c h a v oi ds or mi ni mis es d a m a g e t o a q u ati c f a u n a. I n or d er f or fis h ( a n d mi gr at or y e els) t o p ass t hr o u g h a n y f or m of r ot o d y n a mi c p u m p, it is r e c o g nis e d t h at c o n v e nti o n al p u m p d esi g ns r e q uir e s u bst a nti al m o di fi c ati o n a n d t h e r a n g e a n d e xt e nt t o w hi c h a p u m p c a n b e utilis e d is i n f a ct r el ati v el y n arr o w. T h e p arti c ul ar el e m e nts wit hi n t h e p u m p t o a c hi e v e t h es e ai ms is o b vi o usl y s u bj e ct t o c o m p a n y i nt ell e ct u al pr o p ert y b ut c a n b e bri e fl y s u m m aris e d as f oll o ws.


T o a c hi e v e a Fis h- Fri e n dl y st at us, t h e ess e nti al el e m e nts f or p u m ps i n cl u d e:


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