MONTH	MAINTENANCE LOCATION	DURATION TIME (h)	ACTIVITY
APRIL	no maintenance work is planned on the gas storage system
MAY
JUNE
JULY
AUGUST	Wells PSP Okoli	96	regular annual hydrodynamic measurement at the   end of the gas injection cycle
SEPTEMBER	no maintenance work is planned on the gas storage system
OCTOBER
NOVEMBER
DECEMBER
JANUARY
FEBRUARY
MARCH	Wells PSP Okoli	96	regular annual hydrodynamic measurement at the   end of the gas withdrawal cycle

  REMARK:
The annual maintenance plan of the gas storage system refers to the activities of the development, construction and maintenance of the gas storage system and the dates for the execution of the activities are indicative. The planned dates for the performance of activities and the duration of the out of operation and/or restrictions in operation will be confirmed 44 hours before the start of the planned activities on the website of the Underground Gas Storage Ltd. (https://www.psp.hr/).
 

• Hydrodynamic (HD) measurements in the underground gas storage deposit: withdrawal capacity 0 m3/h  and injection capacity 0 m3/h with a constant duration of up to 96 hours.HD measurements are planned to be carried out no later than 15 days from the end of the injection cycle or rather the withdrawal cycle of which the users will be notified at least 44 hours in advance.  
• Annual maintenance work on the motorcompressor units: in the time period from the 1st of November until 1st of April injection capacity up to Qut ≤ 80,000 m3/h gas. 
• The Storage System Operator revises as required the planned gas storage service termination deadlines and finally confirms them by delivering a notification to the Storage System Users at least 44 hours in advance. 
• Other notifications which can have an impact onthe use of Gas Storage System's capacities can be seen on the web site Operational Data.