What is the Difference between Code, Standard and Specification?

The difference between Code, Standard and Specification is very important. What is Standard?   Follow TWI: Below maybe easy understand: Standard can define as a set of technical definitions and guidelines – or simply a “how to” instructions for designers and manufacturers. It gives all the necessary requirements for the product, service, and operation. A designer will use the standard to design the product, and a manufacturer will use the standard for the manufacturing of the product. Standard serves as a common language for defining quality and establishing safety criteria for the product. ASTM, API, ISO are some examples of the standard. ASTM has more than … Continue reading What is the Difference between Code, Standard and Specification?

Standard discharge connections for Piping ( shore connection flange )

We will summary the standard discharge connection for some piping system on ship, also called by Shore connection flange. The international shore connection is a universal hose connection that is to be provided on all ships as per the IMO SOLAS requirement. The purpose of the International Shore Coupling is to keep a standby hose attachment to get a connection from shore or from other ships for shipboard firefighting, in case there is a total failure of pumps onboard. The information is taken from MARPOL 73/78 1) Sewage system: For example: 2) Fireman system: The international shore coupling SOLAS requirement under Chapter II-2, regulation … Continue reading Standard discharge connections for Piping ( shore connection flange )

Pressure gauge installation requirement!

Regarding to pressure gauge installation, it need to be follow as below: An Isolation valve for maintenance purpose ( can remove without impairing the pressure system’s integrity ) 2. The pressure gauge installed with vertical position is better than horizontal position: + Below pictures is example for wrong installation pressure gauge: 3. To be vented as vendor’s instruction: Document for refer: +  WINTERS INSTRUMENTS +  WIKA Alexander Wiegand SE & Co. KG Continue reading Pressure gauge installation requirement!

How to take the welding parameters during make WPS / monitor welding performance?

To confirm that a weld has been made to specification: For arc welding the main parameters are as follows: Welding current Arc voltage Travel speed The other parameters which may be measured and recorded are as follows: Wire feed speed (for MIG/MAG) and other processes with a filler wire Gas flow rate (shielding, backing and plasma) Temperature (pre-heat, inter-pass and post-weld heat treatment) Some of these instruments allow the length of the weld to be input so that arc energy (kJ/mm) can be calculated. When measuring voltage and current it is important to do so correctly. + Although current can be … Continue reading How to take the welding parameters during make WPS / monitor welding performance?

CSWIP 3.1: What is OCV ( Open Circuit Voltage ) in welding power source?

In this topic, we will talk about OCV in the welding power source. We need to solve some questions to clear this topic OR additional references on the below topics: Click here: What is OCV Open Circuit Voltage Maximum value Click here: Welding Power Types CC, CV, RAV What is OCV? Types of the static characteristics of power source? How to identify? How to know which welding process uses what type of it ( CC or CV )? 1) What is it? Open circuit voltage (or potential) is a voltage that is not connected to any load in a circuit. … Continue reading CSWIP 3.1: What is OCV ( Open Circuit Voltage ) in welding power source?

Thread of Bolts – Basic Knowledge

When checking Bolt material coming, do you have feeling lose in the forest of BOLT & THEARD? We will help you to identify them accordingly via this topic! It has internal thread & external thread, can call male & female also. 1)  Thread direction: The helix of a thread can twist in two possible directions.: left hand & right hand. 2) Technical terms of thread: Type of thread: Pitch / TPI ( thread per inch ): – The pitch is the distance from the top of one thread to the next in mm. – TPI (Threads per inch) is used by … Continue reading Thread of Bolts – Basic Knowledge

CSWIP 3.1: Question with Answer and Explanation – Part 20

CSWIP 3.1 QUESTION AND ANSWER SERIES CSWIP 3.1: Question with Answer and Explanation – Part 1 CSWIP 3.1: Question with Answer and Explanation – Part 2 CSWIP 3.1: Question with Answer and Explanation – Part 3 CSWIP 3.1: Question with Answer and Explanation – Part 4 CSWIP 3.1: Question with Answer and Explanation – Part 5 CSWIP 3.1: Question with Answer and Explanation – Part 6 CSWIP 3.1: Question with Answer and Explanation – Part 7 CSWIP 3.1: Question with Answer and Explanation – Part 8 CSWIP 3.1: Question with Answer and Explanation – Part 9 CSWIP 3.1: Question with … Continue reading CSWIP 3.1: Question with Answer and Explanation – Part 20

CSWIP 3.1: Question with Answer and Explanation – Part 19

CSWIP 3.1 QUESTION AND ANSWER SERIES CSWIP 3.1: Question with Answer and Explanation – Part 1 CSWIP 3.1: Question with Answer and Explanation – Part 2 CSWIP 3.1: Question with Answer and Explanation – Part 3 CSWIP 3.1: Question with Answer and Explanation – Part 4 CSWIP 3.1: Question with Answer and Explanation – Part 5 CSWIP 3.1: Question with Answer and Explanation – Part 6 CSWIP 3.1: Question with Answer and Explanation – Part 7 CSWIP 3.1: Question with Answer and Explanation – Part 8 CSWIP 3.1: Question with Answer and Explanation – Part 9 CSWIP 3.1: Question with … Continue reading CSWIP 3.1: Question with Answer and Explanation – Part 19

CSWIP 3.1: Question with Answer and Explanation – Part 18

CSWIP 3.1 QUESTION AND ANSWER SERIES CSWIP 3.1: Question with Answer and Explanation – Part 1 CSWIP 3.1: Question with Answer and Explanation – Part 2 CSWIP 3.1: Question with Answer and Explanation – Part 3 CSWIP 3.1: Question with Answer and Explanation – Part 4 CSWIP 3.1: Question with Answer and Explanation – Part 5 CSWIP 3.1: Question with Answer and Explanation – Part 6 CSWIP 3.1: Question with Answer and Explanation – Part 7 CSWIP 3.1: Question with Answer and Explanation – Part 8 CSWIP 3.1: Question with Answer and Explanation – Part 9 CSWIP 3.1: Question with … Continue reading CSWIP 3.1: Question with Answer and Explanation – Part 18