DRAFTINTERNATIONAL STANDARD ISO/DIS 8310 ISO ISO/TC 28/SC 5 Secretariat: JISc Voting begins on Voting terminates on 2012-01-25 2012-06-25 Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels General requirements for automatic tank thermometers on board marine carriers and floating storage Hydrocarbures réfrigérés et combustibles gazeux liquéfiés a base non pétroliere-Exigences générales pour les thermometres de réservoir automatiques a bord des transporteurs de cargaison en mer et des stocks flottants [Revision of first edition (ISO 8310:1991)] ICS 75.180.30 In accordance with the provisions of Council Resolution 15/1993 this document is circulated in the English languageonly. Conformement aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué en version anglaise seulement. To expedite distribution, this document is circulated as received from the committee secretariat. Iso Central Secretariat work of editing and text composition will be undertaken at publication stage. Pour accélerer la distribution, le present document est distribue tel qu'il est parvenu du secretariat du comite. Le travail de redaction et de composition de texte sera effectué au Secretariat central de I'isO au stade de publication. REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL,TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OFTHEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY AREAWAREAND TOPROVIDESUPPORTING DOCUMENTATION. cense from IHS Not for Resal ISO/DIS 8310 Copyright notice This IsO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted under the applicable laws of the user's country, neither this iso draft nor any extract from it may be Requests for permission to reproduce should be addressed to either IsO at the address below or IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted. @ ISO 2012 -All rights reserved Copyright International Organization for Standardization oyIHSunder se from IHS Not for Resale ISO/DIS 8310 Contents Page Foreword Introduction .vi 1 Scope 2 Normative reference 3 Definition 4 Safety precautions 4.1 General 4.2 Equipment precautions. 4.2.1 4.2.2 Mechanical rigidity . 4.2.3 Gastight design . 4.2.4 4.2.5 Tolerance against low temperatures... 4.2.6 Type approval. Design requirements. 5.1 General 5.2 5.3 Indicating device .. 5.4 Installation.... 5.5 Provisionsforroutinemaintenanceandverification 5.6 Provision against sudden malfunctions ....... 5.7 Dynamic response... 5.8 Measurable range.. 5.9 Data filtering and averaging..... 5.10 Compensation for variation of cargo temperatures 5.11 Sealing, security and unsealing. 5.12 Redundancy ... 5.13 Data communication.... 6 Calibration and accuracy verification . 6.1 General. 6.2 Calibration reference.. 6.3 Factory acceptance test (FAT) 6.3.1 6.3.2 Accuracy verification of PRTs ... 6.3.4 Calibration of PRTs..... 6.3.5 Calibration and accuracy verification of indicating device............ 6.4 Site acceptahce test (SAT) .. 6.4.1 Generai. 6.4.2 Accuracy verification of indicating device .... 6.5 Periodic accuracy verification ..... 6.5.1 General. 6.5.2 Method of periodic verification. 6.5.3 Frequency of subsequent calibration and recertification. .9 6.5.4 Customary verification.... Accuracy requirement.... .9 7.1 Overail error 7.2 Resolution. 10 8 ATT calibration records 10 ili Copyrght International OrganizaionfStandardizalonghts reserv