ELECTRO MAGNETIC INSPECTION SYSTEM (SCANSYTEM CORPORATION- PITCO USA)

ELECTRO MAGNETIC INSPECTION SYSTEM (SCANSYTEM CORPORATION- PITCO USA)
TECHNICAL SPECIFICATION (Model Number -DT-3100M)

Inspection System	:	Longitudinal (16 Channels) , and Grade Comparison. Transverse (8 to 12 Channels) , Wall Monitor (4 to 6 Channels)
Wall Thickness Range	:	0.150” ~ 0.545” (3.8mm ~13.8mm) , 5% OD and ID (Artificial reference indication) 0.545”~0.625” (13.8mm ~15.8mm). 5% OD and 10% ID ARI.
Type of Inspection System	:	Longitudinal , Transverse , Wall Monitoring and Grade comparison.
Repeatable variance (25 production runs) tested against calibration ARI Notches	:	Longitudinal System , <15% variance in Amplitude (about 1.5dB) Transverse System , <15% (1.5dB) <15% variance in Amplitude (about 1.5dB)
Repeatability	:	Within ± 2dB.

Model Number DT-3100M
Inspection System	:	Longitudinal (16 Channels)	PC Coils
		Transverse (8 to 12 Channels)	Hall Element.
		Wall Monitor (4 to 6 Channels)	Hall Element.
Diameter Range	:	41/2” (114.3mm) ~ 13 3/8”	Plain end-Pipes.
Wall Thickness Range	:	0.150” ~ 0.625” (3.8mm ~15mm)	OD & ID Inspection<0.625 (15.8mm)
		0.150” ~ 0.545” (3.8mm ~13.8mm)	5% OD and ID (Artificial reference indication)
		0.545”~0.625” (13.8mm ~15.8mm)	5% OD and 10% ID ARI.
Type of Inspection System	:	Longitudinal	Rotating Magnetic Circuit(2 shoes)
		Transverse	Encircling Magnetizing coil (8,12 shoes)
		Wall Monitoring	Encircling Magnetizing coil (8,12 shoes)
Coverage	:	Longitudinal	Variable Coverage 100%
		Transverse	>120% fixed
		Wall	=minimum 100%
Rate of Missing Alarms	:	0	( 25 Production runs)
Rate of false Alarms	:	<1%	( 25 production runs)
Flow Marking Resolution	:	Longitudinal Indications	±3.0”(75mm)
		Transverse Indications	±2.0”(50mm)
		Wall Indications	±2.0”(50mm)
Untested End Area(Plain end)	:	Inspected ( Repeatable Amplitude)	<18”@ 150fpm (450mm @ 0.75mps)
		Detectable (varying amplitude)	<12”@ 150fpm (200mm @ 0.75mps)
		With Upset ends	<12” from transition vanishing point.
Repeatable variance (25 production runs) tested against calibration ARI Notches.	:	Longitudinal System	<15% variance in Amplitude (about 1.5dB)
		Transverse System	<15% (1.5dB)
			<15% variance in Amplitude (about 1.5dB)
Circumference Repeatability Rate of variance (25 production runs) tested against calibration ARI	:	All Systems 4 clock positions compared at ( 3:00 – 6:00 – 9:00 – 12:00)	<20%variance in Amplitudes (about 2 dB) when compared with averages of other clock position runs at production speeds.
Signal – Noise – Ratio	:	All figures refer to test ARI Notches	OD ARI>3:1 ID ARI >3:1
Notch (ARI) Depths	:	0.150” ~ 0.545” (3.8mm ~13.8mm)	5% ID & OD
		0.545”~0.625” (13.8mm ~15.8mm)	5% OD 10% ID
		ARI Sizes	See 4.3 Table 1

TABLE- Acceptance ( Inspection ) Levels
Grade		External Imperfection		Internal Imperfection
Grade		Longitudinal	Transverse	Longitudinal	Transverse
1		2	3	4	5
Pipe
N80Q, M85, L80,C95		L4	--	L4	--
P110 to A.10 (SR16)		L4	L4	L4	L4
P110		L2	L2	L2	L2
P110 to A.10 (SR16) AND a.3 (SR2)		L2	L2	L2	L2
C90, T95, Q125	UT	L2	L2	L2	L2
C90, T95, Q125	2nd Method	L2	L2	--	--
Weld seam
P110,Q125		L2	N	L2	N
All other grades		L3	N	L3	N
Coupling Stock		L2	L2	N	N
N- Not required, Lx- Acceptance( Inspection ) Level

Table -2 Artificial reference Indicators
Acceptance (Inspection) Level	Notch depthª Max %	Notch length Max at full depth	Width Max in	Radially drilled hole diameterᵇ in
1	2	3	4	5
L2	5	2.0	0.040	1/16
L3	10	2.0	0.040	1/8
L4	12.6	2.0	0.040	1/8
NOTE : See fig 0.17
a. Depth as a percent of specified wall thickness. The depth tolerance shall be ±16% of the calculated notch depth, with a minimum notch depth of 0.012 in ± 0.002 in. b. Drilled hole diameter ( through pipe wall) shall be based on the drill bit size.