EN
English
Hrvatski
Contact
Press
News
About Us
General Information
Company Profile
Plinacro Group
Plinacro Ltd.
Podzemno skladište plina d.o.o. (Underground gas storage Ltd.)
Mission, Vision and Goals
Managerial structure
Assembly, Supervisory Board and Revisory Board
Board and Management
Organization
Transmission System Management
Transmission System Maintenance and Development Division
Finance and Accounting Division
Information Security, General and Protection Affairs Division
Legal and Personnel Department
Procurement Department
History
History of Gas Transmission Activity in Croatia
History of Plinacro
Quality Managment System
Human Resources
Important Contacts
Business Activities
Financial Indicators
Total Income
Total Charges
Gross Profit
Net Profit
Annual Reports
Business Report for Plinacro Ltd
Business Report for Plinacro Group
Independent Auditor's Report for Plinacro Ltd
Independent Auditor's Report for Plinacro Group
The Ten-Year Development Plan of the Gas Transmission System in the Republic of Croatia
International Activities
Projects of Mutual Interest (PMI)
NPOO.C7.1.I3.01.0001 Strengthening the gas infrastructure
Zlobin – Bosiljevo
Bosiljevo – Sisak
Kozarac – Sisak
Zabok – Lučko
For Users
Transmission system
Description of the transmission system
Interactive Map of the Transmission System
Natural gas
Safety measures
Connection to the transmission system
Information for users
Forecasting daily gas off-take
Market Demand Survey
Network Data Access
Transmission System Access and Use
Virtual Trading Point
Natural Gas Quality
Transparency - Regulation 715/2009
Interruptions and restrictions due to works on the transmission system
Services and prices of services
Services provided by the transmission system operator
Publications according to Chapter VIII. of Regulation (EU) 2017/460 - Article 29 and Article 30
Price of the gas transmission service
Tariff items and calculator
Legal documentation
Consultation with the Interested Public
Information for balacing
Estimate of total imbalance at the end of gas day
Consumption of distribution systems
Procurement
Notices
Covenant of Integrity
Register of Contracts on Public Procurement
Information on Procedures of “Procurement of Lesser Value to Which the PPA is not Applied“
Information on Public Procurement Procedures
Review of Concluded Contracts of "Procurement of Lesser Value to Which the PPA is not Applied"
Review of Concluded Contracts on Public Procurement and their Execution
Social Responsibility
Plinacro's Corporate Responsibility
Environmental Protection in Plinacro
Personal data protection
Employee Care
Health and Safety
Investing in Knowledge
Anti-Corruption Programme
Committee on Ethics
Committee on Irregularities
Information Officer
Donations and Sponsorships
List of Donations and Sponsorships
About Us
General Information
Company Profile
Plinacro Group
Plinacro Ltd.
Podzemno skladište plina d.o.o. (Underground gas storage Ltd.)
Mission, Vision and Goals
Managerial structure
Assembly, Supervisory Board and Revisory Board
Board and Management
Organization
Transmission System Management
Transmission System Maintenance and Development Division
Finance and Accounting Division
Information Security, General and Protection Affairs Division
Legal and Personnel Department
Procurement Department
History
History of Gas Transmission Activity in Croatia
History of Plinacro
Quality Managment System
Human Resources
Important Contacts
Business Activities
Financial Indicators
Total Income
Total Charges
Gross Profit
Net Profit
Annual Reports
Business Report for Plinacro Ltd
Business Report for Plinacro Group
Independent Auditor's Report for Plinacro Ltd
Independent Auditor's Report for Plinacro Group
The Ten-Year Development Plan of the Gas Transmission System in the Republic of Croatia
International Activities
Projects of Mutual Interest (PMI)
NPOO.C7.1.I3.01.0001 Strengthening the gas infrastructure
Zlobin – Bosiljevo
Bosiljevo – Sisak
Kozarac – Sisak
Zabok – Lučko
For Users
Transmission system
Description of the transmission system
Interactive Map of the Transmission System
Natural gas
Safety measures
Connection to the transmission system
Information for users
Forecasting daily gas off-take
Market Demand Survey
Network Data Access
Transmission System Access and Use
Virtual Trading Point
Natural Gas Quality
Transparency - Regulation 715/2009
Interruptions and restrictions due to works on the transmission system
Services and prices of services
Services provided by the transmission system operator
Publications according to Chapter VIII. of Regulation (EU) 2017/460 - Article 29 and Article 30
Price of the gas transmission service
Tariff items and calculator
Legal documentation
Consultation with the Interested Public
Information for balacing
Estimate of total imbalance at the end of gas day
Consumption of distribution systems
Procurement
Notices
Covenant of Integrity
Register of Contracts on Public Procurement
Information on Procedures of “Procurement of Lesser Value to Which the PPA is not Applied“
Information on Public Procurement Procedures
Review of Concluded Contracts of "Procurement of Lesser Value to Which the PPA is not Applied"
Review of Concluded Contracts on Public Procurement and their Execution
Social Responsibility
Plinacro's Corporate Responsibility
Environmental Protection in Plinacro
Personal data protection
Employee Care
Health and Safety
Investing in Knowledge
Anti-Corruption Programme
Committee on Ethics
Committee on Irregularities
Information Officer
Donations and Sponsorships
List of Donations and Sponsorships
Enter Term
Search
Natural gas quality_old
Natural gas quality is determined by the analysis of chemical composition and physical features of natural gas. There are two main reasons for regular gas quality control and determining natural gas calorific value in the transmission system:
Safety
of the transmission system: defects of gas pipelines and equipment by corrosion, functioning of technical equipment of the transmission system depending on the gas composition and impurity content.
of final customers: technical compliance with devices of final customers (industrial facilities, home appliances).
Energy calculation
Valid by-laws prescribe the use of metering energy units [kWh] in all business transactions on the natural gas market.
The basic metering unit is volume of gas that has flown through an accounting point in a time unit [m3/h]. For the calculation of gas energy [kWh/h], gas volume that has flown through the accounting point in an hour [m3/h] is multiplied by the amount of the net calorific value [kWh/m3, at 15°C/15°C] determined for a particular gas day. Daily gas quantity is expressed in the metering unit kWh/d, and it is calculated as a sum of hourly quantities [kWh/h].
Determining natural gas quality
In compliance with the General conditions of gas supply the Transmission System Operator is obliged to provide gas quality monitoring.
Standard gas quality defines minimum and maximum values of gas quality parameters, prescribed in General conditions of gas supply, Enclosure 2, Table 3.
For the purpose of calculation of gas transported in metering unit of energy, transmission system is divided into specific areas consisting of physically connected parts of the transmission within which gas of similar quality and calorific value is transported. Specific points are locations at the transmission system within a specific area at which gas quality is determined, while the measured values represent reference value for all exits from the transmission system associated to this specific area. The Transmission System Operator announces the valid list of specific points and associated connections:
Specific points and associated connections
The Transmission System Operator determines specific areas and specific points based on its knowledge of technical-operative features of gas flow, structure of the gas transmission system and the information received by gas composition analysis.
The determining of the quality and calorific value of delivered gas is carried out by periodic sampling, twice a month at specific points.
At the authorised and licensed laboratory a chromatographic gas analysis is carried out. It determines:
gas composition (accredited in accord. with HRN ISO 6974-5:2014),
gross calorific value, net calorific value, Wobbe feature, molar mass, density, relative density, specific gas constant (accredited in accord. with HRN ISO 6976:2016)
The information received in an authorised laboratory by a chromatographic gas samples analysis, sampled in specific points, is used to calculate the delivered gas quantities expressed in the metering unit of energy. The Transmission system operator publishes reports on the gas quality pursuant to Network Code for the transmission system:
Laboratory reports on the gas quality for particular specific points
Annual report on the gas quality
-table
The Transmission system operator publishes also average annual values of gas quality parameters for all specific points:
Report on the gas quality
, 2018
More details can be found
here.
Selected topics
For Users >
Tariff Items and Tariff Calculators
Business Activities >
Annual Reports
For Users >
Transmission System Access and Use
Bussiness activities >
NPOO.C7.1.I3.01.0001 Strengthening the gas infrastructure