Three-core colour coding

Action So m u c h , t h e n for the r e c o m m e n d a t i o n s . How will they be put into e f f e c t ? The w o r k i n g g r o u p , which c o n s i s t e d of r e p r e s e n t a t i v e s f r o m m a n u f a c t u r e r s a n d u s e r s of p r e s s u r e v e s s e l s , f r o m t h e Welding I n s t i t u t e and f r o m the M i n i s t r y of T e c h nology, s u b m i t t e d i t s r e p o r t to the M i n i s t r y for two p u r p o s e s : 1

2

As e v i d e n c e f o r the C o m m i t t e e of E n q u i r y on P r e s s u r e V e s s e l s which i s c u r r e n t l y e x a m i n i n g the t e c h n i c a l and e c o n o m i c a s p e c t s of the UK i n d u s t r y in r e l a t i o n to competitors overseas F o r a p p r o p i a t e r e c o m m e n d a t i o n s to be i m p l e m e n t e d i m m e d i a t e l y by the M i n i s t r y of welding

I m m e d i a t e M i n i s t r y a c t i o n will be confined to the r e c o m m e n d a t i o n s d i r e c t l y c o n n e c t e d with welding; a s p e c i a l i s t t e c h n i c a l g r o u p , c h a i r e d by Dr R. Weck, D i r e c t o r of the W e l d ing I n s t i t u t e , h a s b e e n s e t up to c o n v e r t t h e s e r e c o m m e n d a tions into d e t a i l e d action.

THREE-CORE COLOURCOD~G

'Another e x a m p l e of b u r e a u c r a c y on the r a m p a g e ! ' w a s p r o bably the r e a c t i o n of m a n y to the r e c e n t d e c i s i o n that c o n t i n e n t a l c o l o u r coding s h o u l d be adopted in the UK f o r t h r e e c o r e f l e x i b l e c o r d s on d o m e s t i c a p p l i a n c e s . But s u c h a viewpoint i s m i s g u i d e d . B r i e f l y , the G o v e r n m e n t h a v e d e c i d e d to m a k e r e g u l a t i o n s u n d e r the C o n s u m e r P r o t e c t i o n Act r e q u i r i n g the c o r e

IN

BRIEF

c o l o u r s of t h r e e - c o r e flexible c o r d s fitted to d o m e s t i c e l e c t r i c a l a p p l i a n c e s , when o f f e r e d f o r s a l e in G r e a t B r i t a i n , to c o m p l y with the i n t e r n a t i o n a l coding r e c e n t l y a g r e e d by m o s t of the c o u n t r i e s of E u r o p e : G r e e n - a n d - y e l l o w s t r i p e d c o r e - e a r t h (ground) Brown core--live Light b l u e c o r e - - n e u t r a l E x p o r t e r s of B r i t i s h - m a d e e q u i p m e n t have had to contend with a v a r i e t y of s t a n d a r d s t h r o u g h o u t E u r o p e . T h e s e s t a n d a r d s a r e g e n e r a l l y s t a t u t o r y , and it i s difficult to k e e p c o s t s down when s i x or e i g h t v e r s i o n s of e a c h piece of e q u i p m e n t have to be m a d e . No mean achievement

T h i s w a s pointed out by the w r i t e r of a l e t t e r to the London E v e n i n g S t a n d a r d . He went on: ' T h e p r o p o s e d i n t e r n a t i o n a l s t a n d a r d h a s e v e n t u a l l y b e e n d e c i d e d upon a s b e i n g a c c e p t a b l e to all n a t i o n s a d h e r i n g to the I n t e r n a t i o n a l E l e c t r i c a l S t a n d a r d s C o m m i s s i o n . It h a s t a k e n m a n y y e a r s to t h r a s h out an a g r e e m e n t , and w h e n you c o n s i d e r that in s o m e c o u n t r i e s b l a c k h a s b e e n an a c c e p t e d c o l o u r for live w i r e s , while in o t h e r s r e d h a s b e e n a s t a t u t o r y colour f o r e a r t h wiring, i n t e r n a t i o n a l s t a n d a r d i z a t i o n i s no m e a n a c h i e v e m e n t , and i s the r e s u l t of c a r e f u l thought by e n g i n e e r s : not the w h i m of bureaucrats. ' It will b e p o s s i b l e to s e l l a p p l i a n c e s with c o r d s coded a s at p r e s e n t s p e c i f i e d in the ICE W i r i n g R e g u l a t i o n s up to a d a t e to be s p e c i f i e d in the new s t a t u t o r y r e g u l a t i o n s . T h e s e will be i n t e n d e d to r e l a t e only to t h r e e - c o r e f l e x i b l e c o r d s for dom e s t i c a p p l i a n c e s . T h e c o l o u r coding for all o t h e r flexible c a b l e s will be p r e s c r i b e d in a m e n d m e n t s to t h e ICE W i r i n g R e g u l a t i o n s and in B r i t i s h S t a n d a r d s .

...

X-RAY TRUCK ON UK TOUR

QUICK

T o u r i n g the UK t h i s m o n t h i s the S e i f e r t x - r a y t r u c k (Fig 22). T h i s c o n t a i n s an x - r a y d a r k r o o m (Fig 23) and c a n t r a n s p o r t a c o m p l e t e x - r a y unit to a b u i l d i n g or c o n s t r u c t i o n site. T h e t r u c k i s on t o u r f r o m N o v e m b e r l l t h to 23rd. UK enquiries

A s m a l l l e a f l e t h a s b e e n p u b l i s h e d f o r u s e a s a 'quick g u i d e ' to the new B r i t i s h S t a n d a r d c o d e s for fixed and v a r i a b l e r e s i s t o r s and c a p a c i t o r s . T h e publication, which c o n f i n e s i t s e l f to a s e l e c t i o n of r e s i s t a n c e and c a p a c i t a n c e v a l u e s , i s a v a i l a b l e f r e e on r e q u e s t f r o m Reliance Controls Lid, Drakes

to F o r s t e r l n s t n o n e n t s Lid, The M a l l h o u s e , A m e r s h a m , Bucki~hanzshire.

GUIDE

TO

BS COMPONENT

CODES

Way, Swindon, Wiltshire, England.

non-destructive testing November 1968

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