Sr. No.

Description Of Work.

Characteristic

Acceptance Limits.

Method of Test.

Quantum of Check.

Format of Records.

2

Raw material Check

Chemical Composition

As given in Drawing

Chemical Analysis

Mill TC

Mill TC

3

Roundness,Mean dia,,Straightness & Verticality

Measuring

As given in Drawing

Visually & Measurements

5%

Recorded

4

Heat Treatment

Quenching tempering

As given in Drawing

Time - Temp Chart

100%

Temp chart/numbering Recorded 

5

Hardness Test.

Hardness

As given in Drawing

Brinell

100%

Recorded

6

Neck thread.

Threads

As given in Drawing

Gauges

100%

Recorded

7

Volumetric Capacity.

Water capacity

+ 5% - 0 %

Deferential Weighing

100%

Recorded

8

Volumetric expansion test

Pressure Testing

At test pressure for  30 sec.

Hydraulicaly Pressurised

100%

Recorded

9

Pneumatic Leakage Test.

Leakage Testing

At working  pressure for 60 Sec

Air Pressure

100%

Recorded

10

Visual Inspection

Defects

No Injurious defects 

Visual

100%

Recorded

11

Pressure cycling test

Fatigue Test

15000 Cycles  At 260 BAR

Pressurising & Depressurising

1 Cyl./Batch

Recorded

12

Hydraulic  pressure Burst Test.

Burst  Pressure

450 BAR

Pressuring for Rupture

Cyl of Press. Cyc. Test

Recorded

13

Bonfire  test

Behavior at temperature

Vent through pressure Relief Device

Heating of gas filled cylinder.

1 Cyl./Batch

Recorded

14

Leak before break test

Pressure Cycling

45000 Cycles at           300 Bar

Pressurising & Depressurising

3 Cyl./Batch

Recorded

15 A

Physical  Tests

Mechanical properties

As given in Drawing

Tensile,  Impact , etc.

1 Cyl./Batch

Recorded

B

Thickness 

Measuring

As given in Drawing

THICKNES GAUGE

Recorded

C

Base check

Visual

As given in Drawing

THICKNES GAUGE & VISUAL

Visual

16

Exterior Coating.

D.F.T.

Spray

2%

Recorded

17

Markings

Data verification

As given in Drawing

Visual

100%

Visual

18

Ultra Sonic Flaw Detection

Checking Internal Defects

Defect size <5 % of W T

Contact /ss Immersion

100%

Recorded