SC/T 8166-2018 in English

VALID

Technical requirement for fabrication of steel cold brine freezing tanl liner on big fishing vessel

Issued on:2018-05-07
Implemented on:2018-09-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $80.00
$78.00

Standard No:	SC/T 8166-2018
Document status:	VALID
Title in English:	Technical requirement for fabrication of steel cold brine freezing tanl liner on big fishing vessel
Title in Chinese:	大型渔船冷盐水冻结舱钢质内胆制作技术要求
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-05-07
Implemented on:	2018-09-01
Professional Classification:	SC-Aquaculture
Related Keywords:	standard technical elements key big fishing vessel introduction analysis technical requirement 3 000-ton fishing vessel technical requirements industry innovations material selection must
Related Topics:	freeze Year-end establishment freeze most fisheries Freezing of most departments grand freeze Most of the system is frozen Large Chiller fishing boat liner Freezing sample preparation technology Freezing sample preparation technology

Introduction

Analysis of the core content of the standard

Technical elements	Key technical requirements	Industry innovations
Material selection	Must meet -40℃ low temperature performance + GB 8624 flame retardant grade	For the first time, it is clarified that the moisture content of Eucalyptus wood supports is ≤15%
Support system	Width ≥60mm+Double bolt anti-cold bridge design	Innovative three-dimensional drilling process
Corner treatment	200mm lap welding+concave and convex edges	Obtuse angle/right angle dual solution to solve stress concentration

In-depth interpretation of key technologies

1. Low temperature adaptability of materials

The standard requires that steel and welding materials must pass the National Fisheries Inspection (Law) [2015] No. 34 certification, and especially emphasizes:

The impact test temperature should be 10℃ lower than the working temperature
The diffusible hydrogen content of the welding rod is ≤5mL/100g

2. Anti-cold bridge process innovation

Through the triple isolation design:

Rubber gaskets are installed between the support and the hull
The surface of the fasteners is galvanized (thickness ≥50μm)
Intermittent welding is used to reduce heat conduction in the corner plate

Implementation Suggestions

Solutions to Typical Problems

The case of a 3,000-ton fishing vessel shows that:

A pre-bending process is required for parts with a curvature radius of less than 500mm
The shielding gas flow rate for CO2 gas shielded welding should be controlled at 15-20L/min
The airtightness test needs to maintain a pressure of 0.02MPa for ≥2 hours