API MPMS 17.1:2008 pdf download

API MPMS 17.1:2008 pdf download.Manual of Petroleum Measurement Standards Chapter 17–Marine Measurement Section 1- -Guidelines for Marine Cargo Inspection.
6 Satety and Health Considerations
6.1 General
Due consideration must always be given to applicable safely and health procedures. Considerations should Indude. but are not limited to, possible electrostatic hazards (see API 2003) and other fire and explosion hazards, potential dangers to personnel (e.g., exposure limits, hazard communication, training, and various protective clothing and equipment requirements and work practices), and potential explosive and toxic hazards associated with a cargo tanks environment. The physical characteristics of the cargo and existing operational conditions should be evaluated carefully, and applicable international, federal, state, and local regulations should be strictly observed. Safety procedures designated by the employer, the vessel’s operator, and other concerned parties also must be observed. The International Safety Guide for Oil Tankers and Temwnais and appropriate Oil Companies International Marine Forum (OCIMF). International Maritime Organization (IMO) and API publications should be consulted for additional safety information.
It should be noted that while many chemicals have clwacteflslics similar to other petroleum liquid cargoes and thus require no special consideration, many do pose a potential safety threat to personnel, the environment and the vessels carrying them. Accordingly, all special precautions and measurement methods required by the shipper, supplier or any other relevant regulatory authorities should be understood and observed when handling these cargoes
Petroleum vapors and associated substances—including hydrogen sulfide vapors from sour” crude—also may invotve potential toxicity. Petroleum vapors with high concentrations of hydrogen sulfide may cause unconsciousness or death. During and after the opening of the gauge hatch, all personnel should stand far enough away to minimize the inhalation of vapor.
Since toxic vapors or oxygen deficiency cannot be detected safely by smell, visual inspection, or udgment appropriate precautions should be taken to ensure protection. Provisions should be made for appropriate exposure monitoring, protective equipment for personnel, and emergency rescue procedures, When it is necessary, personnel should have suitable respiratory protection prior to entering the gauge site and during the gauging procedure.
6.2 Physical Characteristics and Fire Considerations
Personnel who handle petroleum-related substances, as well as other chemical materials, should be familiar with their physical and chemical ctiaractensbcs—including potential for fire, explosion and reactivity—and with potential toxicity and health hazards and emergency procedures Personnel should be alert to avoid potential soa’oes of ignition arid should keep containers of materials dosed when not in use.
API 2217 and API 2026 and any applicable regulations should be consulted when sampling requires entry into confined spaces.
Information regarding particular materials and conditions shoi.$d be obtained from the employer, the manufacturer, or the supplier of that material or from the material safety data sheel
— Check with the vessels repesentative for reports of any unusual events that may have occurred dunng the sea passage or at the previous port and that may require special vigilance during loading.
— The vessels representative should confirm the vessel’s ability to heat the cargo as instructed
— Check with shore personnel to agree on procedures for handling any special conditions that exist on shore that may adversely affect the loading activity or measurements,
— A Letter of Protest should be Issued to any party falling to comply with recommended procedures
— Agreement should be reached on the method to be used to determine line fullness (see API MPMS Ch. 17.6).
— Determine which vessel tanks will be loaded, the capacity of the tanks, the condition of the lines, the nature of the vessels last three cargoes, and the method of cleaning the cargo tanks (see API MPMS Ch. 178).
— If lrst-foot” samples are required, a decision on the tanks to be used for such samples and the quantity of cargo to be loaded for the sampling should be ,nade
On multi-grade vessels, it may be necessary to load the vessels tanks in a certain order to avoid contamination and to comply with vessel operational requirements. This should be discussed and the order by grade and/or product should be agreed upon before loading operations begin.
NOTE Contanlnabon may resijt In an unsale condition for the termlnM and/or the vessel.
The suggested inspection checklist (see Annex A) or a similar document should be used.
7.1.2 Blending
If blending aboard the vessel is involved, It is critical that all volumes loaded are consistent with the proportional hand- blend before loading, If the material contained in shorelines is to be loaded as part of the blend, a line sample should be taken and tested.
To aid blending. the heaviest component may be loaded first, followed by the lighter components. The volume should be gauged after each component is loaded. The contents of the shoreline, the vessel’s previous cargo and any OBQ should be taken into consideration for their effect on the blending operation. Blends may require adjustment to maintain the mutually agreed upon blend specifications.