GB/T 26148-2010 Safety specification for the use of manually operated high pressure waterjet equipment
1 Scope
This specification specifies the definition, cleaning operation team (staff, training, protection and accident), preparation before operation, operating rules and unit maintenance for the cleaning of the high pressure waterjet.
This specification is applicable to the high pressure waterjet unit (hereinafter referred to as "unit") with the pressure not less than 10MPa.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.
AQ 3025 "Safety Code for Works at Height in Chemical Manufacturer"
JGJ 80 "Safety Technical Code for Works at Height of Building Construction"
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply.
3.1
Waterjet
The high velocity water flow bundle with different shapes formed by the nozzle, with the velocity of jet flow mainly depending on the pressure drop on the cross section at the nozzle inlet and outlet.
3.1.1
Low pressure waterjet
The waterjet with the operating pressure not greater than 10MPa, with the centrifugal pump or the low pressure reciprocating pump as its unit host.
3.1.2
High pressure waterjet
The waterjet with the operating pressure being 10MPa~100MPa, with the high pressure reciprocating pump mainly as its unit host.
3.1.3
Super-high pressure waterjet
The waterjet with the operating pressure not less than 100MPa, with the super-high pressure reciprocating pump and the supercharger mostly as its unit host.
3.2
Abrasive waterjet
The solid particles have been mixed with the jet flow bundle before the jet flow striking the article, and the abrasive material is generally injected in the mixing chamber by the waterjet and then passes through the collimating nozzle (also called "abrasive nozzle") thus to form the abrasive waterjet.
3.3
High pressure waterjet unit
The high pressure waterjet unit generally refers to the waterjet unit with various pressures. It is a fluid energy releasing system containing the nozzle which is used to change the pressure energy of the fluid into velocity energy to form the free jet bundle. Solid particles or additional chemical agents may be added in the jet flow which may also be heated. The high pressure waterjet unit consists of:
a) High-pressure water generating unit: high pressure pump unit and intensifier unit;
b) Control system: relief valve, pressure regulating valve (overflow unloading valve), control valve, electrical control cabinet and control console etc.;
c) Actuating mechanism: spray gun, spray lance, spray head, abrasive waterjet fitting, 2-D spray-head and 3-D tank cleaner etc.;
d) Auxiliary system: pressure gauge, trailer and feed mechanism etc..
3.4
Intensifier
The unit multiplying the pressure of the driving liquid by virtue of the variation of the piston/plunger area, with features like super pressure and small power.
3.5
High pressure pump and super-high pressure pump
The pressure source unit increasing water pressure and conveying the high pressure water to the nozzle. Such pumps may be mobile or fixed, and the plunger pump with positive displacement is usually adopted to ensure the constant flow under given pump speed. The high pressure pump and the super-high pressure pump are possessed of the operating pressure respectively being 10MPa~100MPa and not less than 100MPa.
3.6
Spray gun
The spray gun is the tool to make the high pressure water form the waterjet by passing through the nozzle. It consists of control valve, spray lance and nozzle fitting (including one ore more nozzles) and is equipped with lock mechanism, as shown in Figure 1. Generally, the spray gun is directly connected with the pressure regulating valve at the outlet end of the high pressure pump by way of the high pressure hose fitting.
Standard
GB/T 26148-2010 Safety specification for the use of manually operated high pressure waterjet equipment (English Version)
Standard No.
GB/T 26148-2010
Status
superseded
Language
English
File Format
PDF
Word Count
10500 words
Price(USD)
170.0
Implemented on
2011-7-1
Delivery
via email in 1 business day
Detail of GB/T 26148-2010
Standard No.
GB/T 26148-2010
English Name
Safety specification for the use of manually operated high pressure waterjet equipment
GB/T 26148-2010 Safety specification for the use of manually operated high pressure waterjet equipment
1 Scope
This specification specifies the definition, cleaning operation team (staff, training, protection and accident), preparation before operation, operating rules and unit maintenance for the cleaning of the high pressure waterjet.
This specification is applicable to the high pressure waterjet unit (hereinafter referred to as "unit") with the pressure not less than 10MPa.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.
AQ 3025 "Safety Code for Works at Height in Chemical Manufacturer"
JGJ 80 "Safety Technical Code for Works at Height of Building Construction"
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply.
3.1
Waterjet
The high velocity water flow bundle with different shapes formed by the nozzle, with the velocity of jet flow mainly depending on the pressure drop on the cross section at the nozzle inlet and outlet.
3.1.1
Low pressure waterjet
The waterjet with the operating pressure not greater than 10MPa, with the centrifugal pump or the low pressure reciprocating pump as its unit host.
3.1.2
High pressure waterjet
The waterjet with the operating pressure being 10MPa~100MPa, with the high pressure reciprocating pump mainly as its unit host.
3.1.3
Super-high pressure waterjet
The waterjet with the operating pressure not less than 100MPa, with the super-high pressure reciprocating pump and the supercharger mostly as its unit host.
3.2
Abrasive waterjet
The solid particles have been mixed with the jet flow bundle before the jet flow striking the article, and the abrasive material is generally injected in the mixing chamber by the waterjet and then passes through the collimating nozzle (also called "abrasive nozzle") thus to form the abrasive waterjet.
3.3
High pressure waterjet unit
The high pressure waterjet unit generally refers to the waterjet unit with various pressures. It is a fluid energy releasing system containing the nozzle which is used to change the pressure energy of the fluid into velocity energy to form the free jet bundle. Solid particles or additional chemical agents may be added in the jet flow which may also be heated. The high pressure waterjet unit consists of:
a) High-pressure water generating unit: high pressure pump unit and intensifier unit;
b) Control system: relief valve, pressure regulating valve (overflow unloading valve), control valve, electrical control cabinet and control console etc.;
c) Actuating mechanism: spray gun, spray lance, spray head, abrasive waterjet fitting, 2-D spray-head and 3-D tank cleaner etc.;
d) Auxiliary system: pressure gauge, trailer and feed mechanism etc..
3.4
Intensifier
The unit multiplying the pressure of the driving liquid by virtue of the variation of the piston/plunger area, with features like super pressure and small power.
3.5
High pressure pump and super-high pressure pump
The pressure source unit increasing water pressure and conveying the high pressure water to the nozzle. Such pumps may be mobile or fixed, and the plunger pump with positive displacement is usually adopted to ensure the constant flow under given pump speed. The high pressure pump and the super-high pressure pump are possessed of the operating pressure respectively being 10MPa~100MPa and not less than 100MPa.
3.6
Spray gun
The spray gun is the tool to make the high pressure water form the waterjet by passing through the nozzle. It consists of control valve, spray lance and nozzle fitting (including one ore more nozzles) and is equipped with lock mechanism, as shown in Figure 1. Generally, the spray gun is directly connected with the pressure regulating valve at the outlet end of the high pressure pump by way of the high pressure hose fitting.
