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GB/T 21451.1-2015 (GBT 21451.1-2015)

GB/T 21451.1-2015_English: PDF (GBT21451.1-2015)
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GB/T 21451.1-2015English449 Add to Cart 4 days Petroleum and liquid petroleum products -- Measurement of level and temperature in storage tanks by automatic methods -- Part 1: Measurement of level in atmospheric tanks GB/T 21451.1-2015 Valid GB/T 21451.1-2015

BASIC DATA
Standard ID GB/T 21451.1-2015 (GB/T21451.1-2015)
Description (Translated English) Petroleum and liquid petroleum products -- Measurement of level and temperature in storage tanks by automatic methods -- Part 1: Measurement of level in atmospheric tanks
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard E98
Classification of International Standard 75.180.30
Word Count Estimation 21,231
Date of Issue 2015-10-09
Date of Implementation 2016-03-01
Quoted Standard GB/T 13236; GB/T 13894; ISO 1998-1; ISO 1998-2; ISO 1998-3; ISO 1998-4; ISO 1998-5; ISO 1998-6; ISO 1998-7; ISO 1998-99
Adopted Standard ISO 4266-1-2002, MOD
Drafting Organization Ltd. China Petrochemical Research Institute of Petroleum
Administrative Organization National Standardization Technical Committee on products and lubricant oil (SAC/TC 280)
Regulation (derived from) National Standard Announcement 2015 No.31
Proposing organization National Standardization Technical Committee on products and lubricant oil (SAC/TC 280)
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This Standard specifies the storage tank at atmospheric pressure, accuracy Reid vapor pressure of less than 100 kPa of oil and oil products level measurement with immersion and non-immersion type automatic level gauge, installation, commissioning, calibration and testing guidelines. This Standard applies to level measurement and inventory management, custody transfer tank. This Standard does not apply to the installation of automatic level measurement gauge (ALG) frozen tank.

GB/T 21451.1-2015
(Petroleum and liquid petroleum product storage tank level and temperature in automatic measurement - Part 1. pressure tank level measurement)
ICS 75.180.30
E98
National Standards of People's Republic of China
Petroleum and liquid petroleum product storage tank level and
Automatic temperature measurement
Part 1. atmospheric tank level measurement
Part 1. Measurementoflevelinatmospherictanks
(ISO 4266-1.2002, MOD)
Issued on. 2015-10-09
2016-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Measure 2
5 Accuracy 3
6 ALG installation 4
Initial setting and initial inspection site 7 10
8 ALG post-test 15
9 and 15 receives data communications
References 17
Foreword
GB/T 21451 "Petroleum and liquid petroleum product storage tank liquid level measurement and automatic temperature" is divided into six parts.
--- Part 1. pressure tank level measurement;
--- Part 2. tanker tanks level measurement;
--- Part 3. Pressure tank level measurement;
--- Part 4. atmospheric tanks temperature measurement;
--- Part 5. tanker compartment temperature measurement;
--- Part 6. Pressure tank temperature measurement.
This section GB/T 21451 Part 1.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section uses redrafted Law Amendment uses ISO 4266-1.2002 "Petroleum and liquid petroleum product storage tank level and temperature automatically
Measurement - Part 1. atmospheric tank level measurement. "
This part of ISO 4266-1.2002 technical differences and their reasons are as follows.
--- Between paragraph 2 and paragraph 1 a paragraph. "This section applies to level measurement inventory management and custody transfer tanks.",
He stressed for inventory management and custody transfer measurement, consistent with other parts of ISO 4266;
--- On normative references, this part of GB/T 21451 of the technical differences have been adjusted in order to adapt our technology
Condition, adjust the focus reflected in Chapter 2, "Normative references", the specific adjustments are as follows.
• Modify with international standards of GB/T 13236 replaced by ISO 4512.2000 (see 7.2.3);
• increase the reference GB/T 13894 (see 4.3.7,7.2.2).
--- Modify the term "3.5 dipstick" English expressions and definitions to be consistent with GB/T 13236-2011, and the portion of the original definition
NOTE contents as a sub;
--- Modify the definition of the term "3.7 measurement reference point", with the GB/T 13236-2011 consistent;
--- Modify the term "high 3.12 empty" is defined, with the GB/T 13236-2011 consistent;
--- After 6.4.1 add "thereby avoiding or reducing the displacement of the liquid level and temperature changes caused by ALG installation point.", With strong
Of the important role of stabilizing tube;
--- 6.4.4 After the first phrase add "while at the side of the shade or in direct sunlight," to avoid due to the different thermal expansion
error;
--- Modify the order of 2, written in the middle of the section in Figure 2 on the previous Legend, prepared to adapt to the requirements of the standard;
--- 6.5.7 The increase in "illiquid when the oil tank, through grooves or through holes increase the number of columns, the width or diameter, shorten the adjacent
Spaced holes or slots, the oil will be easier to stabilize the free inflow or outflow tubing, thereby ensuring uniform and stable liquid tank liquid level in tube
Sex. "Avoid or reduce the liquid stable density stratification inside and outside of the different effects caused;
--- Increase 6.5.9 "When stable tube installed in the pipe against the manual metering or measurement position of the mouth, sounding reference plate is preferably connected directly to the
The stable liquid pipe, ensure that the installation location ALG relative height measured depth reference plate remains substantially unchanged. "Strengthening sounding board and reference
S